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Note: This page contains sample records for the topic "daily solar roof" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


1

Solar Roof Cooling by Evaporation  

E-Print Network [OSTI]

It is generally recognized that as much as 60% of the air conditioning load in a building is generated by solar heat from the roof. This paper on SOLAR ROOF COOLING BY EVAPORATION is presented in slide form, tracing the history of 'nature's way...

Patterson, G. V.

1981-01-01T23:59:59.000Z

2

One Panel One Roof, DOE Powering Solar Workforce | Department...  

Broader source: Energy.gov (indexed) [DOE]

One Panel One Roof, DOE Powering Solar Workforce One Panel One Roof, DOE Powering Solar Workforce...

3

Solar Roof Cooling by Evaporation  

E-Print Network [OSTI]

SOLAR ROOF COOLING BY EVAPORATION Fanjet Evaporative Roof Cooling Windsor Lake Landing #1 Windsor Point Road Columbia, S.C. 29206 G. V. Patterson National Sales Manager Evaporation is nature's way of cooling. By the The American Society... penetration through will include current engineering techniques, sys out the course of the day. tem designs and documented cases of 20% to 30% reduction in air-conditioning run time. Dr. John Yellott of the Yellott Solar Energy Labo ratories in Phoenix...

Patterson, G. V.

1982-01-01T23:59:59.000Z

4

SOLAR ROOF POWERS THE NJIT CAMPUS CENTER  

E-Print Network [OSTI]

SOLAR ROOF POWERS THE NJIT CAMPUS CENTER THE SKY'S THE LIMIT: BERNADETTE MOKE SITS ON THE ROOF, ARE 160 SOLAR PANELS, SOME OF WHICH AUTOMATICALLY FOLLOW THE PATH OF THE SUN. 10 NJITMAGAZINE COVER STORY'S THE LIMIT: SOLAR ROOF POWERS THE NJIT CAMPUS CENTER "The solar panels even move a little at night," says

Bieber, Michael

5

Effects of solar photovoltaic panels on roof heat transfer  

E-Print Network [OSTI]

the energy performance of  photovoltaic roofs, ASHRAE Trans A thermal model for photovoltaic systems, Solar Energy, Effects of Solar Photovoltaic Panels on Roof Heat Transfer 

Dominguez, Anthony; Kleissl, Jan; Luvall, Jeffrey C

2011-01-01T23:59:59.000Z

6

Solar Roof Cooling by Evaporation  

E-Print Network [OSTI]

. Roof air conditioning load is reduced by 85% to 90%. The cooler roof also protects and extends roof life. My presentation today will cover an old, square foot, and generally speaking, it will old technique -- one that has been gaining in show a...

Patterson, G. V.

1980-01-01T23:59:59.000Z

7

Maui County- Solar Roofs Initiative Loan Program  

Broader source: Energy.gov [DOE]

In September 2002, Maui Electric Company (MECO) and the County of Maui teamed up to launch the Maui Solar Roofs Initiative to increase the use of renewable energy in Maui County. MECO administers...

8

Effects of solar photovoltaic panels on roof heat transfer  

E-Print Network [OSTI]

the underside of the tilted solar panels and the surface of the roof under the solar panel (Fig.  2).  An air temperature of the  solar panel is similar to the roof 

Dominguez, Anthony; Kleissl, Jan; Luvall, Jeffrey C

2011-01-01T23:59:59.000Z

9

Update on the Million Solar Roofs Initiative  

SciTech Connect (OSTI)

The Million Solar Roofs Initiative, announced by the President in June of 1997, spans a period of twelve years and intends to increase domestic deployment of solar technologies. This paper presents an overview of the development of the initiative and significant activities to date.

Herig, C.

1999-05-09T23:59:59.000Z

10

High Efficiency Solar Integrated Roof Membrane Product  

SciTech Connect (OSTI)

This project was designed to address the Solar Energy Technology Program objective, to develop new methods to integrate photovoltaic (PV) cells or modules within a building-integrated photovoltaic (BIPV) application that will result in lower installed cost as well as higher efficiencies of the encapsulated/embedded PV module. The technology assessment and development focused on the evaluation and identification of manufacturing technologies and equipment capable of producing such low-cost, high-efficiency, flexible BIPV solar cells on single-ply roofing membranes.

Partyka, Eric; Shenoy, Anil

2013-05-15T23:59:59.000Z

11

Solare Cell Roof Tile And Method Of Forming Same  

DOE Patents [OSTI]

A solar cell roof tile includes a front support layer, a transparent encapsulant layer, a plurality of interconnected solar cells and a backskin layer. The front support layer is formed of light transmitting material and has first and second surfaces. The transparent encapsulant layer is disposed adjacent the second surface of the front support layer. The interconnected solar cells has a first surface disposed adjacent the transparent encapsulant layer. The backskin layer has a first surface disposed adjacent a second surface of the interconnected solar cells, wherein a portion of the backskin layer wraps around and contacts the first surface of the front support layer to form the border region. A portion of the border region has an extended width. The solar cell roof tile may have stand-offs disposed on the extended width border region for providing vertical spacing with respect to an adjacent solar cell roof tile.

Hanoka, Jack I. (Brookline, MA); Real, Markus (Oberberg, CH)

1999-11-16T23:59:59.000Z

12

Laying the Foundation for a Solar America: The Million Solar Roofs Initiative  

SciTech Connect (OSTI)

As the U.S. Department of Energy's Solar Energy Technology Program embarks on the next phase of its technology acceptance efforts under the Solar America Initiative, there is merit to examining the program's previous market transformation effort, the Million Solar Roofs Initiative. Its goal was to transform markets for distributed solar technologies by facilitating the installation of solar systems.

Strahs, G.; Tombari, C.

2006-10-01T23:59:59.000Z

13

Empirically Derived Strength of Residential Roof Structures for Solar Installations.  

SciTech Connect (OSTI)

Engineering certification for the installation of solar photovoltaic (PV) modules on wood roofs is often denied because existing wood roofs do not meet structural design codes. This work is intended to show that many roofs are actually sufficiently strong given the conservatism in codes, documented allowable strengths, roof structure system effects, and beam composite action produced by joist-sheathing interaction. This report provides results from a testing program to provide actual load carrying capacity of residential rooftops. The results reveal that the actual load carrying capacity of structural members and systems tested are significantly stronger than allowable loads provided by the International Residential Code (IRC 2009) and the national structural code found in Minimum Design Loads for Buildings and Other Structures (ASCE 7-10). Engineering analysis of residential rooftops typically ignores the system affects and beam composite action in determining rooftop stresses given a potential PV installation. This extreme conservatism combined with conservatism in codes and published allowable stress values for roof building materials (NDS 2012) lead to the perception that well built homes may not have adequate load bearing capacity to enable a rooftop PV installation. However, based on the test results presented in this report of residential rooftop structural systems, the actual load bearing capacity is several times higher than published values (NDS 2012).

Dwyer, Stephen F.; Sanchez, Alfred; Campos, Ivan A.; Gerstle, Walter H.

2014-12-01T23:59:59.000Z

14

EPIC-RoofNet: An Experimental Testbed for Solar-powered Wireless Sensor Networks  

E-Print Network [OSTI]

EPIC-RoofNet: An Experimental Testbed for Solar-powered Wireless Sensor Networks Amitangshu Pal through a shared folder. Keywords: Wireless sensor networks, solar harvesting, adaptive protocols experiments on solar-powered sensor nodes. Due to constraints in cost and size, the solar panels

Nasipuri, Asis

15

Income Tax Deduction for Solar-Powered Roof Vents or Fans  

Broader source: Energy.gov [DOE]

Indiana allows taxpayers to take a deduction on solar-powered roof fans (or vent, also sometimes called an attic fan) installed in a home that the taxpayer owns or leases. The deduction is for 50%...

16

Daylighter Daily Solar Roof Light | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 NoPublic Utilities Address:011-DNA Jump to:52c8ff988c1 No38e4011f618b No revision hasDawesCounty isDay,

17

Effects of solar photovoltaic panels on roof heat transfer  

E-Print Network [OSTI]

Itron Inc. , CPUC California Solar Initiative 2009 Impact hot  days found by the California Solar Initiative impact solar photovoltaic (PV) panels were conducted in  San Diego, California.  

Dominguez, Anthony; Kleissl, Jan; Luvall, Jeffrey C

2011-01-01T23:59:59.000Z

18

City of Grand Rapids Building Solar Roof Demonstration  

SciTech Connect (OSTI)

Grand Rapids, Michigan is striving to reduce it environmental footprint. The municipal government organization has established environmental sustainability policies with the goal of securing 100% of its energy from renewable sources by 2020. This report describes the process by which the City of Grand Rapids evaluated, selected and installed solar panels on the Water/Environmental Services Building. The solar panels are the first to be placed on a municipal building. Its new power monitoring system provides output data to assess energy efficiency and utilization. It is expected to generate enough clean solar energy to power 25 percent of the building. The benefit to the public includes the economic savings from reduced operational costs for the building; an improved environmentally sustainable area in which to live and work; and increased knowledge about the use of solar energy. It will serve as a model for future energy saving applications.

DeClercq, Mark; Martinez, Imelda

2012-08-31T23:59:59.000Z

19

Photovoltaic roof heat flux  

E-Print Network [OSTI]

designs (relatively) Photovoltaic Solar P a n e l AtmosphereCALIFORNIA, SAN DIEGO Photovoltaic Roof Heat Flux A ThesisABSTRACT OF T H E THESIS Photovoltaic Roof Heat Flux by

Samady, Mezhgan Frishta

2011-01-01T23:59:59.000Z

20

The analysis of water use and water status of plants in a fluid-roof solar greenhouse  

E-Print Network [OSTI]

of MASTER OF SCIENCE May 1981 Major Subject: Soil Science THE ANALYSIS OF WATER USE AND WATER STATUS OF PLANTS IN A FLL'ID-ROOF SOLAR GREENHOUSE A Thesis by GARY CLAUDE HEATHMAN Approved as to style and content by: arrman o ommrttee ea o epart nt... em er Mem r May, 1981 ABSTRACT The Analysis of Water Use And Water Status of Plants in a Fluid-roof Solar Greenhouse. (May 1981) Gary Claude Heathman, B. S. , Texas A8;M University Chairman of Advisory Committee: Dr. C. H. M. van Bavel...

Heathman, Gary Claude

1981-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "daily solar roof" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


21

Photovoltaic roof heat flux  

E-Print Network [OSTI]

under the offset unit's solar panel, the hf formula (16) wasdrop below the angle unit's solar panel at night time. D u rfor both the units, the solar panel covered roof was a heat

Samady, Mezhgan Frishta

2011-01-01T23:59:59.000Z

22

Roof-top solar energy potential under performance-based building energy codes: The case of Spain  

SciTech Connect (OSTI)

The quantification at regional level of the amount of energy (for thermal uses and for electricity) that can be generated by using solar systems in buildings is hindered by the availability of data for roof area estimation. In this note, we build on an existing geo-referenced method for determining available roof area for solar facilities in Spain to produce a quantitative picture of the likely limits of roof-top solar energy. The installation of solar hot water systems (SHWS) and photovoltaic systems (PV) is considered. After satisfying up to 70% (if possible) of the service hot water demand in every municipality, PV systems are installed in the remaining roof area. Results show that, applying this performance-based criterion, SHWS would contribute up to 1662 ktoe/y of primary energy (or 68.5% of the total thermal-energy demand for service hot water), while PV systems would provide 10 T W h/y of electricity (or 4.0% of the total electricity demand). (author)

Izquierdo, Salvador; Montanes, Carlos; Dopazo, Cesar; Fueyo, Norberto [Fluid Mechanics Group, University of Zaragoza and LITEC (CSIC), Maria de Luna 3, 50018 Zaragoza (Spain)

2011-01-15T23:59:59.000Z

23

Become One In A Million: Partnership Updates. Million Solar Roofs and Interstate Renewable Energy Council Annual Meeting, Washington, D.C., October 2005  

SciTech Connect (OSTI)

The U.S. Department of Energy's Million Solar Roofs Initiative (MSR) is a unique public-private partnership aimed at overcoming market barriers for photovoltaics (PV), solar water heating, transpired solar collectors, solar space heating and cooling, and pool heating. This report contains annual progress reports from 866 partners across the United States.

Tombari, C.

2005-09-01T23:59:59.000Z

24

Roof Renovations  

Broader source: Energy.gov [DOE]

The roof of a Federal building is a common placement for a number of renewable energy technologies, so they should be addressed anytime a roof renovation is undertaken, including roof-mounted...

25

White Roofs  

ScienceCinema (OSTI)

Secretary Steven Chu discusses the benefits of switching to white roofs and light colored pavements.

Chu, Steven

2013-05-29T23:59:59.000Z

26

Soiling of building envelope surfaces and its effect on solar reflectance - Part II: Development of an accelerate aging method for roofing materials  

SciTech Connect (OSTI)

Highly reflective roofs can decrease the energy required for building air conditioning, help mitigate the urban heat island effect, and slow global warming. However, these benefits are diminished by soiling and weathering processes that reduce the solar reflectance of most roofing materials. Soiling results from the deposition of atmospheric particulate matter and the growth of microorganisms, each of which absorb sunlight. Weathering of materials occurs with exposure to water, sunlight, and high temperatures. This study developed an accelerated aging method that incorporates features of soiling and weathering. The method sprays a calibrated aqueous soiling mixture of dust minerals, black carbon, humic acid, and salts onto preconditioned coupons of roofing materials, then subjects the soiled coupons to cycles of ultraviolet radiation, heat and water in a commercial weatherometer. Three soiling mixtures were optimized to reproduce the site-specific solar spectral reflectance features of roofing products exposed for 3 years in a hot and humid climate (Miami, Florida); a hot and dry climate (Phoenix, Arizona); and a polluted atmosphere in a temperate climate (Cleveland, Ohio). A fourth mixture was designed to reproduce the three-site average values of solar reflectance and thermal emittance attained after 3 years of natural exposure, which the Cool Roof Rating Council (CRRC) uses to rate roofing products sold in the US. This accelerated aging method was applied to 25 products?single ply membranes, factory and field applied coatings, tiles, modified bitumen cap sheets, and asphalt shingles?and reproduced in 3 days the CRRC's 3-year aged values of solar reflectance. This accelerated aging method can be used to speed the evaluation and rating of new cool roofing materials.

Sleiman, Mohamad; Kirchstetter, Thomas W.; Berdahl, Paul; Gilbert, Haley; Quelen, Sarah; Marlot, Lea; Preble, Chelsea; Chen, Sharon; Montalbano, Amadine; Rosseler, Olivier; Akbari, Hashem; Levinson, Ronnen; Destaillats, Hugo

2013-11-18T23:59:59.000Z

27

Forecasting of preprocessed daily solar radiation time series using neural networks  

E-Print Network [OSTI]

Forecasting of preprocessed daily solar radiation time series using neural networks Christophe prediction of global solar radiation on a horizontal surface. First results are promising with nRMSE ~ 21 t or at day d and year y d H0 Extraterrestrial solar radiation coefficient for day d [MJ/m²] xt, xd,y Time

Boyer, Edmond

28

Evolution of cool-roof standards in the United States  

E-Print Network [OSTI]

2006. Inclusion of solar reflectance and thermal emittanceuse photovoltaic, solar- thermal, or roof-garden systems2006. Inclusion of solar reflectance and thermal emittance

Akbari, Hashem

2008-01-01T23:59:59.000Z

29

what is a cool roof? what is the  

E-Print Network [OSTI]

the value, the `cooler' the roof. Solar Re ectance: the ability of a roof to re ect solar energy Thermal) as an alternative to solar reflectance and thermal emittance values · Energy and cost savings can be 20% depending Commission recogniz- es for certifying the solar reflectance and thermal emittance values of roofing products

30

Energy Performance Aspects of a Florida Green Roof  

E-Print Network [OSTI]

ENERGY PERFORMANCE ASPECTS OF A FLORIDA GREEN ROOF Jeffrey K. Sonne Senior Research Engineer Florida Solar Energy Center Cocoa, FL ABSTRACT Previous green roof studies have found that planted roofs significantly reduce roof temperatures... and roof heat flux, and simulations indicate cooling load reductions of up to 25%. This monitored study evaluates summer and winter energy performance aspects of a green roof on a central Florida university building addition that was completed in 2005...

Sonne, J.

2006-01-01T23:59:59.000Z

31

Solar Roofing Shingles: Office of Power Technologies (OPT) Success Stories Series Fact Sheet  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administrationcontroller systemsBiSite CulturalDepartment ofatRenewable EnergySolar Thermal

32

Green roofs: potential at LANL  

SciTech Connect (OSTI)

Green roofs, roof systems that support vegetation, are rapidly becoming one of the most popular sustainable methods to combat urban environmental problems in North America. An extensive list of literature has been published in the past three decades recording the ecological benefits of green roofs; and now those benefits have been measured in enumerated data as a means to analyze the costs and returns of green roof technology. Most recently several studies have made substantial progress quantifying the monetary savings associated with storm water mitigation, the lessoning of the Urban Heat Island, and reduction of building cooling demands due to the implementation of green roof systems. Like any natural vegetation, a green roof is capable of absorbing the precipitation that falls on it. This capability has shown to significantly decrease the amount of storm water runoff produced by buildings as well as slow the rate at which runoff is dispensed. As a result of this reduction in volume and velocity, storm drains and sewage systems are relieved of any excess stress they might experience in a storm. For many municipalities and private building owners, any increase in storm water mitigation can result in major tax incentives and revenue that does not have to be spent on extra water treatments. Along with absorption of water, vegetation on green roofs is also capable of transpiration, the process by which moisture is evaporated into the air to cool ambient temperatures. This natural process aims to minimize the Urban Heat Island Effect, a phenomenon brought on by the dark and paved surfaces that increases air temperatures in urban cores. As the sun distributes solar radiation over a city's area, dark surfaces such as bitumen rooftops absorb solar rays and their heat. That heat is later released during the evening hours and the ambient temperatures do not cool as they normally would, creating an island of constant heat. Such excessively high temperatures induce heat strokes, heat exhaustion, and pollution that can agitate the respiratory system. The most significant savings associated with green roofs is in the reduction of cooling demands due to the green roof's thermal mass and their insulating properties. Unlike a conventional roof system, a green roof does not absorb solar radiation and transfer that heat into the interior of a building. Instead the vegetation acts as a shade barrier and stabilizes the roof temperature so that interior temperatures remain comfortable for the occupants. Consequently there is less of a demand for air conditioning, and thus less money spent on energy. At LANL the potential of green roof systems has already been realized with the construction of the accessible green roof on the Otowi building. To further explore the possibilities and prospective benefits of green roofs though, the initial capital costs must be invested. Three buildings, TA-03-1698, TA-03-0502, and TA-53-0031 have all been identified as sound candidates for a green roof retrofit project. It is recommended that LANL proceed with further analysis of these projects and implementation of the green roofs. Furthermore, it is recommended that an urban forestry program be initiated to provide supplemental support to the environmental goals of green roofs. The obstacles barring green roof construction are most often budgetary and structural concerns. Given proper resources, however, the engineers and design professionals at LANL would surely succeed in the proper implementation of green roof systems so as to optimize their ecological and monetary benefits for the entire organization.

Pacheco, Elena M [Los Alamos National Laboratory

2009-01-01T23:59:59.000Z

33

Indirect Benefits (Increased Roof Life and HVAC Savings) from...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Indirect Benefits (Increased Roof Life and HVAC Savings) from a Solar PV System at the San Jos Convention Center Indirect Benefits (Increased Roof Life and HVAC Savings) from a...

34

A preliminary study of the linear relationship between monthly averaged daily solar radiation and daily thermal amplitude in the north of Buenos Aires provence  

E-Print Network [OSTI]

Using irradiance and temperature measurements obtained at the Facultad Regional San Nicol\\'as of UTN, we performed a preliminary study of the linear relationship between monthly averaged daily solar radiation and daily thermal amplitude. The results show a very satisfactory adjustment (R = 0.848, RMS = 0.066, RMS% = 9.690 %), even taking into account the limited number of months (36). Thus, we have a formula of predictive nature, capable of estimating mean monthly solar radiation for various applications. We expect to have new data sets to expand and improve the statistical significance of these results.

Cionco, R; Rodriguez, R

2012-01-01T23:59:59.000Z

35

Using remotely sensed solar radiation data for reference1 evapotranspiration estimation at a daily time step2  

E-Print Network [OSTI]

1 Using remotely sensed solar radiation data for reference1 evapotranspiration estimation: +33 5 57 35 07 59. Email: k-van-leeuwen@enitab.fr13 14 15 Abstract16 Solar radiation is an important database, which displays spatialized19 solar radiation data at a daily time step for Europe and Africa

Paris-Sud XI, Université de

36

Statistical correlation between hourly and daily values of solar radiation on horizontal surface at sea level in the Italian climate  

E-Print Network [OSTI]

219- Statistical correlation between hourly and daily values of solar radiation on horizontal- nalières du rayonnement solaire. Abstract. 2014 The knowledge of hourly data of solar radiation is required data measured in Italian stations and propose a method to estimate hourly solar radiation

Boyer, Edmond

37

Cool Roofs Webinar  

Broader source: Energy.gov [DOE]

A webinar presented by Blaise Stoltenberg and Kosol Kiatreungwattana of the National Renewable Energy Laboratory about roofs designed to maintain a lower roof temperature than traditional roofs in order to reduce energy bills.

38

Advanced Energy Efficient Roof System  

SciTech Connect (OSTI)

Energy consumption in buildings represents 40 percent of primary U.S. energy consumption, split almost equally between residential (22%) and commercial (18%) buildings.1 Space heating (31%) and cooling (12%) account for approximately 9 quadrillion Btu. Improvements in the building envelope can have a significant impact on reducing energy consumption. Thermal losses (or gains) from the roof make up 14 percent of the building component energy load. Infiltration through the building envelope, including the roof, accounts for an additional 28 percent of the heating loads and 16 percent of the cooling loads. These figures provide a strong incentive to develop and implement more energy efficient roof systems. The roof is perhaps the most challenging component of the building envelope to change for many reasons. The engineered roof truss, which has been around since 1956, is relatively low cost and is the industry standard. The roof has multiple functions. A typical wood frame home lasts a long time. Building codes vary across the country. Customer and trade acceptance of new building products and materials may impede market penetration. The energy savings of a new roof system must be balanced with other requirements such as first and life-cycle costs, durability, appearance, and ease of construction. Conventional residential roof construction utilizes closely spaced roof trusses supporting a layer of sheathing and roofing materials. Gypsum board is typically attached to the lower chord of the trusses forming the finished ceiling for the occupied space. Often in warmer climates, the HVAC system and ducts are placed in the unconditioned and otherwise unusable attic. High temperature differentials and leaky ducts result in thermal losses. Penetrations through the ceilings are notoriously difficult to seal and lead to moisture and air infiltration. These issues all contribute to greater energy use and have led builders to consider construction of a conditioned attic. The options considered to date are not ideal. One approach is to insulate between the trusses at the roof plane. The construction process is time consuming and costs more than conventional attic construction. Moreover, the problems of air infiltration and thermal bridges across the insulation remain. Another approach is to use structurally insulated panels (SIPs), but conventional SIPs are unlikely to be the ultimate solution because an additional underlying support structure is required except for short spans. In addition, wood spline and metal locking joints can result in thermal bridges and gaps in the foam. This study undertook a more innovative approach to roof construction. The goal was to design and evaluate a modular energy efficient panelized roof system with the following attributes: (1) a conditioned and clear attic space for HVAC equipment and additional finished area in the attic; (2) manufactured panels that provide structure, insulation, and accommodate a variety of roofing materials; (3) panels that require support only at the ends; (4) optimal energy performance by minimizing thermal bridging and air infiltration; (5) minimal risk of moisture problems; (6) minimum 50-year life; (7) applicable to a range of house styles, climates and conditions; (8) easy erection in the field; (9) the option to incorporate factory-installed solar systems into the panel; and (10) lowest possible cost. A nationwide market study shows there is a defined market opportunity for such a panelized roof system with production and semi-custom builders in the United States. Senior personnel at top builders expressed interest in the performance attributes and indicate long-term opportunity exists if the system can deliver a clear value proposition. Specifically, builders are interested in (1) reducing construction cycle time (cost) and (2) offering increased energy efficiency to the homebuyer. Additional living space under the roof panels is another low-cost asset identified as part of the study. The market potential is enhanced through construction activity levels in target marke

Jane Davidson

2008-09-30T23:59:59.000Z

39

Daily Processing of Solar System Object Observations by Gaia UMR 6202 Cassiope, University of Nice-Sophia Antipolis, CNRS,  

E-Print Network [OSTI]

complex operations, devoted to obtain the best accuracies in the output. It will operate on data obtainedDaily Processing of Solar System Object Observations by Gaia Tanga, P. UMR 6202 Cassiopée to a selected event. For this reason, a pipeline performing fast processing of Gaia observations of Solar System

Paris-Sud XI, Université de

40

Evolution of cool-roof standards in the United States  

SciTech Connect (OSTI)

Roofs that have high solar reflectance and high thermal emittance stay cool in the sun. A roof with lower thermal emittance but exceptionally high solar reflectance can also stay cool in the sun. Substituting a cool roof for a noncool roof decreases cooling-electricity use, cooling-power demand, and cooling-equipment capacity requirements, while slightly increasing heating-energy consumption. Cool roofs can also lower citywide ambient air temperature in summer, slowing ozone formation and increasing human comfort. Provisions for cool roofs in energy-efficiency standards can promote the building- and climate-appropriate use of cool roofing technologies. Cool-roof requirements are designed to reduce building energy use, while energy-neutral cool-roof credits permit the use of less energy-efficient components (e.g., larger windows) in a building that has energy-saving cool roofs. Both types of measures can reduce the life-cycle cost of a building (initial cost plus lifetime energy cost). Since 1999, several widely used building energy-efficiency standards, including ASHRAE 90.1, ASHRAE 90.2, the International Energy Conservation Code, and California's Title 24 have adopted cool-roof credits or requirements. This paper reviews the technical development of cool-roof provisions in the ASHRAE 90.1, ASHRAE 90.2, and California Title 24 standards, and discusses the treatment of cool roofs in other standards and energy-efficiency programs. The techniques used to develop the ASHRAE and Title 24 cool-roof provisions can be used as models to address cool roofs in building energy-efficiency standards worldwide.

Akbari, Hashem; Akbari, Hashem; Levinson, Ronnen

2008-07-11T23:59:59.000Z

Note: This page contains sample records for the topic "daily solar roof" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


41

Forecasting of preprocessed daily solar radiation time series using neural networks  

SciTech Connect (OSTI)

In this paper, we present an application of Artificial Neural Networks (ANNs) in the renewable energy domain. We particularly look at the Multi-Layer Perceptron (MLP) network which has been the most used of ANNs architectures both in the renewable energy domain and in the time series forecasting. We have used a MLP and an ad hoc time series pre-processing to develop a methodology for the daily prediction of global solar radiation on a horizontal surface. First results are promising with nRMSE {proportional_to} 21% and RMSE {proportional_to} 3.59 MJ/m{sup 2}. The optimized MLP presents predictions similar to or even better than conventional and reference methods such as ARIMA techniques, Bayesian inference, Markov chains and k-Nearest-Neighbors. Moreover we found that the data pre-processing approach proposed can reduce significantly forecasting errors of about 6% compared to conventional prediction methods such as Markov chains or Bayesian inference. The simulator proposed has been obtained using 19 years of available data from the meteorological station of Ajaccio (Corsica Island, France, 41 55'N, 8 44'E, 4 m above mean sea level). The predicted whole methodology has been validated on a 1.175 kWc mono-Si PV power grid. Six prediction methods (ANN, clear sky model, combination..) allow to predict the best daily DC PV power production at horizon d + 1. The cumulated DC PV energy on a 6-months period shows a great agreement between simulated and measured data (R{sup 2} > 0.99 and nRMSE < 2%). (author)

Paoli, Christophe; Muselli, Marc; Nivet, Marie-Laure [University of Corsica, CNRS UMR SPE, Corte (France); Voyant, Cyril [University of Corsica, CNRS UMR SPE, Corte (France); Hospital of Castelluccio, Radiotherapy Unit, Ajaccio (France)

2010-12-15T23:59:59.000Z

42

Roof aperture system for selective collection and control of solar energy for building heating, cooling and daylighting  

DOE Patents [OSTI]

The amount of building heating, cooling and daylighting is controlled by at least one pair of solar energy passing panels, with each panel of the pair of panels being exposed to a separate direction of sun incidence. A shutter-shade combination is associated with each pair of panels and the shutter is connected to the shade so that rectilinear movement of the shutter causes pivotal movement of the shade.

Sanders, William J. (Kansas City, KS); Snyder, Marvin K. (Overland Park, KS); Harter, James W. (Independence, MO)

1983-01-01T23:59:59.000Z

43

Effectiveness of Cool Roof Coatings with Ceramic Particles  

SciTech Connect (OSTI)

Liquid applied coatings promoted as cool roof coatings, including several with ceramic particles, were tested at Oak Ridge National Laboratory (ORNL), Oak Ridge, Tenn., for the purpose of quantifying their thermal performances. Solar reflectance measurements were made for new samples and aged samples using a portable reflectometer (ASTM C1549, Standard Test Method for Determination of Solar Reflectance Near Ambient Temperature Using a Portable Solar Reflectometer) and for new samples using the integrating spheres method (ASTM E903, Standard Test Method for Solar Absorptance, Reflectance, and Transmittance of Materials Using Integrating Spheres). Thermal emittance was measured for the new samples using a portable emissometer (ASTM C1371, Standard Test Method for Determination of Emittance of Materials Near Room 1 Proceedings of the 2011 International Roofing Symposium Temperature Using Portable Emissometers). Thermal conductivity of the coatings was measured using a FOX 304 heat flow meter (ASTM C518, Standard Test Method for Steady-State Thermal Transmission Properties by Means of the Heat Flow Meter Apparatus). The surface properties of the cool roof coatings had higher solar reflectance than the reference black and white material, but there were no significant differences among coatings with and without ceramics. The coatings were applied to EPDM (ethylene propylene diene monomer) membranes and installed on the Roof Thermal Research Apparatus (RTRA), an instrumented facility at ORNL for testing roofs. Roof temperatures and heat flux through the roof were obtained for a year of exposure in east Tennessee. The field tests showed significant reduction in cooling required compared with the black reference roof (~80 percent) and a modest reduction in cooling compared with the white reference roof (~33 percent). The coating material with the highest solar reflectivity (no ceramic particles) demonstrated the best overall thermal performance (combination of reducing the cooling load cost and not incurring a large heating penalty cost) and suggests solar reflectivity is the significant characteristic for selecting cool roof coatings.

Brehob, Ellen G [ORNL] [ORNL; Desjarlais, Andre Omer [ORNL] [ORNL; Atchley, Jerald Allen [ORNL] [ORNL

2011-01-01T23:59:59.000Z

44

IMPROVED ROOF STABILIZATION TECHNOLOGIES  

SciTech Connect (OSTI)

Many U.S. Department of Energy (DOE) remediation sites have performed roof repair and roof replacement to stabilize facilities prior to performing deactivation and decommissioning (D&D) activities. This project will review the decision criteria used by these DOE sites, along with the type of repair system used for each different roof type. Based on this information, along with that compiled from roofing experts, a decision-making tool will be generated to aid in selecting the proper roof repair systems. Where appropriate, innovative technologies will be reviewed and applied to the decision-making tool to determine their applicability. Based on the results, applied research and development will be conducted to develop a method to repair these existing roofing systems, while providing protection for the D and D worker in a cost-efficient manner.

M.A. Ebadian, Ph.D.

1999-01-01T23:59:59.000Z

45

Energy 101: Cool Roofs  

ScienceCinema (OSTI)

This edition of Energy 101 takes a look at how switching to a cool roof can save you money and benefit the environment.

None

2013-05-29T23:59:59.000Z

46

Cool roof Q+A 011.doc 29 July 2009 Cool Roof Q & A (draft)  

E-Print Network [OSTI]

thermal radiation. Thus, a cool roof should have both high "solar reflectance" (ability to reflect, also measured on a scale of 0 to 1). The solar reflectance and thermal emittance of a surface sunlight, measured on a scale of 0 to 1) and high "thermal emittance" (ability to emit thermal radiation

47

Weathering of Roofing Materials-An Overview  

SciTech Connect (OSTI)

An overview of several aspects of the weathering of roofing materials is presented. Degradation of materials initiated by ultraviolet radiation is discussed for plastics used in roofing, as well as wood and asphalt. Elevated temperatures accelerate many deleterious chemical reactions and hasten diffusion of material components. Effects of moisture include decay of wood, acceleration of corrosion of metals, staining of clay, and freeze-thaw damage. Soiling of roofing materials causes objectionable stains and reduces the solar reflectance of reflective materials. (Soiling of non-reflective materials can also increase solar reflectance.) Soiling can be attributed to biological growth (e.g., cyanobacteria, fungi, algae), deposits of organic and mineral particles, and to the accumulation of flyash, hydrocarbons and soot from combustion.

Berdahl, Paul; Akbari, Hashem; Levinson, Ronnen; Miller, William A.

2006-03-30T23:59:59.000Z

48

Why Cool Roofs?  

ScienceCinema (OSTI)

By installing a cool roof at DOE, the federal government and Secretary Chu are helping to educate families and businesses about the important energy and cost savings that can come with this simple, low-cost technology. Cool roofs have the potential to quickly and dramatically reduce global carbon emissions while saving money every month on consumers' electrical bills.

Chu, Steven

2013-05-29T23:59:59.000Z

49

IEEE JOURNAL OF SELECTED TOPICS IN APPLIED EARTH OBSERVATIONS AND REMOTE SENSING, VOL. 7, NO. 5, MAY 2014 1745 The HelioClim-1 Database of Daily Solar Radiation  

E-Print Network [OSTI]

, MAY 2014 1745 The HelioClim-1 Database of Daily Solar Radiation at Earth Surface: An Example Abstract--The HelioClim-1 database contains daily values of the solar radiation reaching the ground and accurate knowledge of the solar radiation and its daily, seasonal and annual variations over recent years

Boyer, Edmond

50

Hygrothermal Performance of West Coast Wood Deck Roofing System  

SciTech Connect (OSTI)

Simulations of roofing assemblies are necessary in order to understand and adequately predict actual the hygrothermal performance. At the request of GAF, simulations have been setup to verify the difference in performance between white and black roofing membrane colors in relation to critical moisture accumulation for traditional low slope wood deck roofing systems typically deployed in various western U.S. Climate Zones. The performance of these roof assemblies has been simulated in the hygrothermal calculation tool of WUFI, from which the result was evaluated based on a defined criterion for moisture safety. The criterion was defined as the maximum accepted water content for wood materials and the highest acceptable moisture accumulation rate in relation to the risk of rot. Based on the criterion, the roof assemblies were certified as being either safe, risky or assumed to fail. The roof assemblies were simulated in different western climates, with varying insulation thicknesses, two different types of wooden decking, applied with varying interior moisture load and with either a high or low solar absorptivity at the roof surface (black or white surface color). The results show that the performance of the studied roof assemblies differs with regard to all of the varying parameters, especially the climate and the indoor moisture load.

Pallin, Simon B [ORNL; Kehrer, Manfred [ORNL; Desjarlais, Andre Omer [ORNL

2014-02-01T23:59:59.000Z

51

Fourier analysis of conductive heat transfer for glazed roofing materials  

SciTech Connect (OSTI)

For low-rise buildings, roof is the most exposed surface to solar radiation. The main mode of heat transfer from outdoor via the roof is conduction. The rate of heat transfer and the thermal impact is dependent on the thermophysical properties of roofing materials. Thus, it is important to analyze the heat distribution for the various types of roofing materials. The objectives of this paper are to obtain the Fourier series for the conductive heat transfer for two types of glazed roofing materials, namely polycarbonate and polyfilled, and also to determine the relationship between the ambient temperature and the conductive heat transfer for these materials. Ambient and surface temperature data were collected from an empirical field investigation in the campus of Universiti Teknologi MARA Shah Alam. The roofing materials were installed on free-standing structures in natural ventilation. Since the temperature data are generally periodic, Fourier series and numerical harmonic analysis are applied. Based on the 24-point harmonic analysis, the eleventh order harmonics is found to generate an adequate Fourier series expansion for both glazed roofing materials. In addition, there exists a linear relationship between the ambient temperature and the conductive heat transfer for both glazed roofing materials. Based on the gradient of the graphs, lower heat transfer is indicated through polyfilled. Thus polyfilled would have a lower thermal impact compared to polycarbonate.

Roslan, Nurhana Lyana; Bahaman, Nurfaradila; Almanan, Raja Noorliyana Raja; Ismail, Razidah [Faculty of Computer and Mathematical Sciences, Universiti Teknologi MARA, 40450 Shah Alam, Selangor (Malaysia); Zakaria, Nor Zaini [Faculty of Applied Sciences, Universiti Teknologi MARA, 40450 Shah Alam, Selangor (Malaysia)

2014-07-10T23:59:59.000Z

52

Photovoltaic roof heat flux  

E-Print Network [OSTI]

t y (2009). 11. Pacific Gas &Electric, Go Solar California:California Solar Initiative (2008). A consumer's guide toprograms such as the California Solar Initiative (CSI) to

Samady, Mezhgan Frishta

2011-01-01T23:59:59.000Z

53

Daily results of the initial operation of the Los Alamos salt-gradient solar pond  

SciTech Connect (OSTI)

The results of analysis of the initial data obtained on the Los Alamos National Laboratory salt-gradient solar pond, a 232 m/sup 2/ pond constructed for the primary purpose of studying pond hydrodynamics, are presented. The pond and the data-acquisition system were complete and in full operation by August 14, 1982. By September 21, 1982, the lower convecting zone had reached a temperature of 56/sup 0/C. An energy balance was performed over this period and is presented. Soil conductivity determinations have been made from the data, and the method is discussed. As a result of a leak discovered in the pond in September, a method of determining the leak rate was developed, and the results are included.

Hedstrom, J.C.; Jones, G.F.; Meyer, K.A.

1983-01-01T23:59:59.000Z

54

List of Roofs Incentives | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision hasInformation Earth's Heat JumpInc Place:KeystoneSolarList ofPassive SolarRoofs Incentives Jump to:

55

Aging and weathering of cool roofing membranes  

SciTech Connect (OSTI)

Aging and weathering can reduce the solar reflectance of cool roofing materials. This paper summarizes laboratory measurements of the solar spectral reflectance of unweathered, weathered, and cleaned samples collected from single-ply roofing membranes at various sites across the United States. Fifteen samples were examined in each of the following six conditions: unweathered; weathered; weathered and brushed; weathered, brushed and then rinsed with water; weathered, brushed, rinsed with water, and then washed with soap and water; and weathered, brushed, rinsed with water, washed with soap and water, and then washed with an algaecide. Another 25 samples from 25 roofs across the United States and Canada were measured in their unweathered state, weathered, and weathered and wiped. We document reduction in reflectivity resulted from various soiling mechanisms and provide data on the effectiveness of various cleaning approaches. Results indicate that although the majority of samples after being washed with detergent could be brought to within 90% of their unweathered reflectivity, in some instances an algaecide was required to restore this level of reflectivity.

Akbari, Hashem; Berhe, Asmeret A.; Levinson, Ronnen; Graveline,Stanley; Foley, Kevin; Delgado, Ana H.; Paroli, Ralph M.

2005-08-23T23:59:59.000Z

56

Inside the White House: Solar Panels  

Broader source: Energy.gov [DOE]

Go inside the White House and learn about the installation of solar panels on the roof of the residence.

57

Roofs | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to: navigation, searchVirginia BlueRiverwoods,RockRipple,Rollingwood, Texas: Energy|RomeRoofs

58

Energy saving potential of various roof technologies  

E-Print Network [OSTI]

Unconventional roof technologies such as cool roofs and green roofs have been shown to reduce building heating and cooling load. Although previous studies suggest potential for energy savings through such technologies, ...

Ray, Stephen D. (Stephen Douglas)

2010-01-01T23:59:59.000Z

59

Photovoltaic roof heat flux  

E-Print Network [OSTI]

d b y t h e a n g l e d solar panel F i g u r e 62: C a l cK l e i s s l , C h a i r Solar panels were mounted w i t hthe optimal angles for solar panels [9], i n this study both

Samady, Mezhgan Frishta

2011-01-01T23:59:59.000Z

60

Monitoring the Energy-Use Effects of Cool Roofs on California Commercial Buildings  

SciTech Connect (OSTI)

Solar-reflective roofs stay cooler in the sun than solar-absorptive roofs. Such ''cool'' roofs achieve lower surface temperatures that reduce heat conduction into the building and the building's cooling load. The California Energy Commission has funded research in which Lawrence Berkeley National Laboratory (LBNL) has measured the electricity use and peak demand in commercial buildings to document savings from implementing the Commission's Cool Roofs program. The study seeks to determine the savings achieved by cool roofs by monitoring the energy use of a carefully selected assortment of buildings participating in the Cool Roofs program. Measurements were needed because the peak savings resulting from the application of cool roofs on different types of buildings in the diverse California climate zones have not been well characterized to date. Only a few occupancy categories (e.g., office and retail buildings) have been monitored before this, and those were done under a limited number of climatic conditions. To help rectify this situation, LBNL was tasked to select the buildings to be monitored, measure roof performance before and after replacing a hot roof by a cool roof, and document both energy and peak demand savings resulting from installation of cool roofs. We monitored the effects of cool roofs on energy use and environmental parameters in six California buildings at three different sites: a retail store in Sacramento; an elementary school in San Marcos (near San Diego); and a 4-building cold storage facility in Reedley (near Fresno). The latter included a cold storage building, a conditioning and fruit-palletizing area, a conditioned packing area, and two unconditioned packing areas (counted as one building).

Akbari, Hashem; Levinson, Ronnen; Konopaki, Steve; Rainer, Leo

2004-07-01T23:59:59.000Z

Note: This page contains sample records for the topic "daily solar roof" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


61

Rain on the Roof-Evaporative Spray Roof Cooling  

E-Print Network [OSTI]

This paper describes evaporative spray roof cooling systems, their components, performance and applications in various climates and building types. The evolution of this indirect evaporative cooling technique is discussed. Psychrometric and sol...

Bachman, L. R.

1985-01-01T23:59:59.000Z

62

Sustainable roofs with real energy savings  

SciTech Connect (OSTI)

This paper addresses the general concept of sustainability and relates it to the building owner`s selection of a low-slope roof. It offers a list of performance features of sustainable roofs. Experiences and data relevant to these features for four unique roofs are then presented which include: self-drying systems, low total equivalent warming foam insulation, roof coatings and green roofs. The paper concludes with a list of sustainable roofing features worth considering for a low-slope roof investment. Building owners and community developers are showing more interest in investing in sustainability. The potential exists to design, construct, and maintain roofs that last twice as long and reduce the building space heating and cooling energy loads resulting from the roof by 50% (based on the current predominant design of a 10-year life and a single layer of 1 to 2 in. (2.5 to 5.1 cm) of insulation). The opportunity to provide better low-slope roofs and sell more roof maintenance service is escalating. The general trend of outsourcing services could lead to roofing companies` owning the roofs they install while the traditional building owner owns the rest of the building. Such a situation would have a very desirable potential to internalize the costs of poor roof maintenance practices and high roof waste disposal costs, and to offer a profit for installing roofs that are more sustainable. 14 refs., 12 figs.

Christian, J.E.; Petrie, T.W.

1996-12-31T23:59:59.000Z

63

Inclusion of cool roofs in nonresidential Title 24 prescriptive requirements  

SciTech Connect (OSTI)

Roofs that have high solar reflectance (high ability to reflect sunlight) and high thermal emittance (high ability to radiate heat) tend to stay cool in the sun. The same is true of low-emittance roofs with exceptionally high solar reflectance. Substituting a cool roof for a noncool roof tends to decrease cooling electricity use, cooling power demand, and cooling-equipment capacity requirements, while slightly increasing heating energy consumption. Cool roofs can also lower the ambient air temperature in summer, slowing ozone formation and increasing human comfort. DOE-2.1E building energy simulations indicate that use of a cool roofing material on a prototypical California nonresidential building with a low-sloped roof yields average annual cooling energy savings of approximately 300 kWh/1000 ft2 [3.2 kWh/m2], average annual natural gas deficits of 4.9 therm/1000 ft2 [5.6 MJ/m2], average source energy savings of 2.6 MBTU/1000 ft2 [30 MJ/m2], and average peak power demand savings of 0. 19 kW/1000 ft2 [2.1 W/m2]. The 15-year net present value (NPV) of energy savings averages $450/1000 ft2 [$4.90/m2] with time dependent valuation (TDV), and $370/1000 ft2 [$4.00/m2] without TDV. When cost savings from downsizing cooling equipment are included, the average total savings (15-year NPV + equipment savings) rises to $550/1000 ft2 [$5.90/m2] with TDV, and to $470/1000 ft2 [$5.00/m2] without TDV. Total savings range from 0.18 to 0.77 $/ft2 [1.90 to 8.30 $/m2] with TDV, and from 0.16 to 0.66 $/ft2 [1.70 to 7.10 $/m2] without TDV, across California's 16 climate zones. The typical cost premium for a cool roof is 0.00 to 0.20 $/ft2 [0.00 to 2.20 $/m2]. Cool roofs with premiums up to $0.20/ft2 [$2.20/m2] are expected to be cost effective in climate zones 2 through 16; those with premiums not exceeding $0.18/ft2 [$1.90/m2] are expected to be also cost effective in climate zone 1. Hence, this study recommends that the year-2005 California building energy efficiency code (Title 24, Pa rt 6 of the California Code of Regulations) for nonresidential buildings with low-sloped roofs include a cool-roof prescriptive requirement in all California climate zones. Buildings with roofs that do not meet prescriptive requirements may comply with the code via an ''overall-envelope'' approach (non-metal roofs only), or via a performance approach (all roof types).

Levinson, Ronnen; Akbari, Hashem; Konopacki, Steve; Bretz, Sarah

2002-12-15T23:59:59.000Z

64

Assessment of technologies for constructing self-drying low-slope roofs  

SciTech Connect (OSTI)

Issues associated with removing excessive moisture from low-slope roofs have been assessed. The economic costs associated with moisture trapped in existing roofs have been estimated. The evidence suggests that existing moisture levels cause approximately a 40% overall reduction in the R-value of installed roofing insulation in the United States. Excess operating costs are further increased by a summertime heat transfer mode unique to wet insulation, caused by the daily migration of water within the roof. By itself, this effect can increase peak electrical demand for air conditioning by roughly 15 W/m{sup 2} of roofing, depending on the type of insulation. This effect will increase peak demand capacity required of utilities in any geographic region (e.g., 900 MW in the South). A simple formula has been derived for predicting the effect that self-drying roofs can have upon time-averaged construction costs. It is presumed that time-averaged costs depend predominantly upon (1) actual service life and (2) the likelihood that the less expensive recover membranes can be installed safely over old roofs. For example, an increase in service life from 15 to 20 years should reduce the current cost of roofing ($12 billion/year) by 21%. Another simple formula for predicting the reroofing waste volume indicates that an increase in service life from 15 to 20 years might reduce the current estimated 0.4 billion ft{sup 3}/year of waste by 25%. A finite-difference computer program has been used to study the flow of heat and moisture within typical existing roofs for a variety of US climates. Nearly all publicly available experimental drying data have been consulted. The drying times for most existing low-slope roofs in the United States are controlled largely climate and the permeability of the structural deck to water vapor.

Kyle, D.M.; Desjarlais, A.O.

1994-05-01T23:59:59.000Z

65

STATE OF CALIFORNIA ENVELOPE INSULATION; ROOFING; FENESTRATION  

E-Print Network [OSTI]

STATE OF CALIFORNIA ENVELOPE ­ INSULATION; ROOFING; FENESTRATION CEC-CF-6R-ENV-01 (Revised 08/09) CALIFORNIA ENERGY COMMISSION INSTALLATION CERTIFICATE CF-6R-ENV-01 Envelope ­ Insulation; Roofing:__________________________________ Brand Name:_______________________________ Thickness (inches):_________________________ Thermal

66

Using Green Roofs to Minimize Roof Runoff Pollution  

E-Print Network [OSTI]

Design (LEED) programprogram Increased insulation and energy efficiencyIncreased insulation and energy efficiency #12;10/31/2008 2 Wildlife Habitat Photo Courtesy Penn State Center for Green Roof Research GreenTested membranes highly recommended ­­ Plastic root barrier above membrane?Plastic root barrier above membrane

Clark, Shirley E.

67

Analysis of the California Solar Resource--Volume 3: Appendices  

E-Print Network [OSTI]

FOR DAILY SOLAR RADIATION DATA ABSTRACT Daily totala corrected solar radiation data base for 19 locations infor Daily Solar Radiation Data Appendix A SUMMARIES OF

erdahl, P.

2011-01-01T23:59:59.000Z

68

Evaluation of Roof Bolting Requirements Based on In-Mine Roof Bolter Drilling  

SciTech Connect (OSTI)

Roof bolting is the most popular method for underground openings in the mining industry, especially in the bedded deposits such as coal. In fact, all U.S. underground coal mine entries are roof-bolted as required by law. However, roof falls still occur frequently in the roof bolted entries. The two possible reasons are: the lack of knowledge of and technology to detect the roof geological conditions in advance of mining, and lack of roof bolting design criteria for modern roof bolting systems. This research is to develop a method for predicting the roof geology and stability condition in real time during roof bolting operation. Based on this information, roof bolting design criteria for modern roof bolting systems will be developed for implementation in real time. For the prediction of roof geology and stability condition in real time, a micro processor was used and a program developed to monitor and record the drilling parameters of roof bolter. These parameters include feed pressure, feed flow (penetration rate), rotation pressure, rotation rate, vacuum pressure, oil temperature of hydraulic circuit, and signals for controlling machine. From the results of a series of laboratory and underground tests so far, feed pressure is found to be a good indicator for identifying the voids/fractures and estimating the roof rock strength. The method for determining quantitatively the location and the size of void/fracture and estimating the roof rock strength from the drilling parameters of roof bolter was developed. Also, a set of computational rules has been developed for in-mine roof using measured roof drilling parameters and implemented in MRGIS (Mine Roof Geology Information System), a software package developed to allow mine engineers to make use of the large amount of roof drilling parameters for predicting roof geology properties automatically. For the development of roof bolting criteria, finite element models were developed for tensioned and fully grouted bolting designs. Numerical simulations were performed to investigate the mechanisms of modern roof bolting systems including both the tension and fully grouted bolts. Parameters to be studied are: bolt length, bolt spacing, bolt size/strength, grout annulus, in-situ stress condition, overburden depth, and roof geology (massive strata, fractured, and laminated or thinly-bedded). Based on the analysis of the mechanisms of both bolting systems and failure modes of the bolted strata, roof bolting design criteria and programs for modern roof bolting systems were developed. These criterion and/or programs were combined with the MRGIS for use in conjunction with roof bolt installation.

Syd S. Peng

2005-10-01T23:59:59.000Z

69

SolarRoofs com | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to:Seadov Pty Ltd Jump to:Information Silver

70

Solar Reflectance Index (SRI) Calculation Worksheet SRI-WS Computer Generated Form  

E-Print Network [OSTI]

Zone: Building Type: Residential Nonresidential Project Name: Project Address: Roofing Products (Cool Roof) Roofing products with high solar reflectance and thermal emittance are referred to as "Cool Roof required to provide air conditioning. The benefit of a high reflectance surface is obvious: while dark

71

Self drying roofs: What! No dripping!  

SciTech Connect (OSTI)

Many roofs are replaced because water accumulates in portions of the roofing system.These accumulations can cause dripping, accelerated membrane failure, poor thermal performance, the threat of structural decay, and the depreciation of building assets. Traditionally, the roofing industry has been concerned with controlling the inflow of water into the roof. An example of this strategy would be the development of a more reliable membrane. However, roof membranes inevitably leak. For this reason, the roof design strategy of the future must be concerned with controlling water outflow. The requirements of this type of roof system are described. Under normal operating conditions (no leaks), the total moisture content of a self-drying roof system shall not increase with time and condensation shall not occur under the membrane during winter uptake. Moisture vapor movement by convection must be eliminated and the flow of water by gravity through imperfections in the roof system must be controlled. After a leak has occurred, no condensation on the upper surface of the deck shall be tolerated and the water introduced by the leak must be dissipated to the building interior in a minimum amount of time. Finite difference computer modeling is used to demonstrate the effectiveness of the design. The impact of deck and insulation permeance, climate, leaks, and wintertime water uptake are simulated. A database of simulations is qualitatively described; this database will be used in future work to produce a simplified means of assessing the design parameters of a self-drying roof system.

Desjarlais, A.

1995-12-31T23:59:59.000Z

72

Global Cooling: Policies to Cool the World and Offset Global Warming from CO2 Using Reflective Roofs and Pavements  

SciTech Connect (OSTI)

Increasing the solar reflectance of the urban surface reduce its solar heat gain, lowers its temperatures, and decreases its outflow of thermal infrared radiation into the atmosphere. This process of 'negative radiative forcing' can help counter the effects of global warming. In addition, cool roofs reduce cooling-energy use in air conditioned buildings and increase comfort in unconditioned buildings; and cool roofs and cool pavements mitigate summer urban heat islands, improving outdoor air quality and comfort. Installing cool roofs and cool pavements in cities worldwide is a compelling win-win-win activity that can be undertaken immediately, outside of international negotiations to cap CO{sub 2} emissions. We propose an international campaign to use solar reflective materials when roofs and pavements are built or resurfaced in temperate and tropical regions.

Akbari, Hashem; Levinson, Ronnen; Rosenfeld, Arthur; Elliot, Matthew

2009-08-28T23:59:59.000Z

73

Relative Accuracy of 1-Minute and Daily Total Solar Radiation Data for 12 Global and 4 Direct Beam Solar Radiometers: Preprint  

SciTech Connect (OSTI)

This report evaluates the relative performance of 12 global and four direct beam solar radiometers deployed at a single site over a 12-month period. Test radiometer irradiances were compared with a reference irradiance consisting of either an absolute cavity radiometer (during calibrations) or a low uncertainty thermopile pyrheliometer (during the evaluation period) for pyrheliometers; and for pyranometers a reference global irradiance computed from the reference pyrheliometer and diffuse irradiance from a shaded pyranometer.

Myers, D. R.; Wilcox, S. M.

2009-03-01T23:59:59.000Z

74

Why Cool Roofs? | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

technology. Cool roofs have the potential to quickly and dramatically reduce global carbon emissions while saving money every month on consumers' electrical bills. Speakers...

75

CALIFORNIA SOLAR DATA MANUAL  

E-Print Network [OSTI]

for Daily Solar Radiation Data. Proceedings of the 1977from total horizontal radiation data, they both suffer froma. SOLAR RADIATION Solar radiation data provide a measure of

Berdahl, P.

2010-01-01T23:59:59.000Z

76

Thermal Performance of Vegetative Roofing Systems  

SciTech Connect (OSTI)

Vegetative roofing, otherwise known as green or garden roofing, has seen tremendous growth in the last decade in the United States. The numerous benefits that green roofs provide have helped to fuel their resurgence in industrial and urban settings. There are many environmental and economical benefits that can be realized by incorporating a vegetative roof into the design of a building. These include storm-water retention, energy conservation, reduction in the urban heat island effect, increased longevity of the roofing membrane, the ability of plants to create biodiversity and filter air contaminants, and beautification of the surroundings by incorporating green space. The vegetative roof research project at Oak Ridge National Laboratory (ORNL) was initiated to quantify the thermal performance of various vegetative roofing systems relative to black and white roofs. Single Ply Roofing Institute (SPRI) continued its long-term commitment to cooperative research with ORNL in this project. Low-slope roof systems for this study were constructed and instrumented for continuous monitoring in the mixed climate of East Tennessee. This report summarizes the results of the annual cooling and heating loads per unit area of three vegetative roofing systems with side-by-side comparison to black and white roofing systems as well as a test section with just the growing media without plants. Results showed vegetative roofs reduced heat gain (reduced cooling loads) compared to the white control system due to the thermal mass, extra insulation, and evapo-transpiration associated with the vegetative roofing systems. The 4-inch and tray systems reduced the heat gain by approximately 61%, while the reduction with the 8-inch vegetative roof was found to be approximately 67%. The vegetative roofing systems were more effective in reducing heat gain than in reducing heat losses (heating loads). The reduction in heat losses for the 4-inch and tray systems were found to be approximately 40% in the mixed climate of East Tennessee. It should be noted that these values are climate dependent. Vegetative roofs also reduced the temperature (heat exposure) and temperature fluctuations (thermal stress) experienced by the membrane. In the cooling season of East Tennessee, the average peak temperature of the 4-inch and tray systems was found to be approximately 94 F cooler than the control black roofing system. The average temperature fluctuations at the membrane for the 4-inch and tray systems were found to be approximately 10 F compared to 125 F for black and 64 F for white systems. As expected, the 8-inch vegetative roof had the lowest fluctuations at approximately 2 F. Future work will include modeling of the energy performance of vegetative roof panels in the test climate of East Tennessee. The validated model then will be used to predict energy use in roofs with different insulation levels and in climates different from the test climate.

Desjarlais, Andre Omer [ORNL; Zaltash, Abdolreza [ORNL; Atchley, Jerald Allen [ORNL; Ennis, Mike J [ORNL

2010-01-01T23:59:59.000Z

77

Lightweight, self-ballasting photovoltaic roofing assembly  

DOE Patents [OSTI]

A photovoltaic roofing assembly comprises a roofing membrane (102), a plurality of photovoltaic modules (104, 106, 108) disposed as a layer on top of the roofing membrane (102), and a plurality of pre-formed spacers, pedestals or supports (112, 114, 116, 118, 120, 122) which are respectively disposed below the plurality of photovoltaic modules (104, 106, 108) and integral therewith, or fixed thereto. Spacers (112, 114, 116, 118, 120, 122) are disposed on top of roofing membrane (102). Membrane (102) is supported on conventional roof framing, and attached thereto by conventional methods. In an alternative embodiment, the roofing assembly may have insulation block (322) below the spacers (314, 314', 315, 315'). The geometry of the preformed spacers (112, 114, 116, 118, 120, 122, 314, 314', 315, 315') is such that wind tunnel testing has shown its maximum effectiveness in reducing net forces of wind uplift on the overall assembly. Such construction results in a simple, lightweight, self-ballasting, readily assembled roofing assembly which resists the forces of wind uplift using no roofing penetrations.

Dinwoodie, Thomas L. (Berkeley, CA)

1998-01-01T23:59:59.000Z

78

Lightweight, self-ballasting photovoltaic roofing assembly  

DOE Patents [OSTI]

A photovoltaic roofing assembly comprises a roofing membrane (102), a plurality of photovoltaic modules (104, 106, 108) disposed as a layer on top of the roofing membrane (102), and a plurality of pre-formed spacers, pedestals or supports (112, 114, 116, 118, 120, 122) which are respectively disposed below the plurality of photovoltaic modules (104, 106, 108) and integral therewith, or fixed thereto. Spacers (112, 114, 116, 118, 120, 122) are disposed on top of roofing membrane (102). Membrane (102) is supported on conventional roof framing, and attached thereto by conventional methods. In an alternative embodiment, the roofing assembly may have insulation block (322) below the spacers (314, 314', 315, 315'). The geometry of the preformed spacers (112, 114, 116, 118, 120, 122, 314, 314', 315, 315') is such that wind tunnel testing has shown its maximum effectiveness in reducing net forces of wind uplift on the overall assembly. Such construction results in a simple, lightweight, self-ballasting, readily assembled roofing assembly which resists the forces of wind uplift using no roofing penetrations.

Dinwoodie, T.L.

1998-05-05T23:59:59.000Z

79

Lightweight, self-ballasting photovoltaic roofing assembly  

DOE Patents [OSTI]

A photovoltaic roofing assembly comprises a roofing membrane (102), a plurality of photovoltaic modules (104, 106, 108) disposed as a layer on top of the roofing membrane (102), and a plurality of pre-formed spacers, pedestals or supports (112, 114, 116, 118, 120, 122) which are respectively disposed below the plurality of photovoltaic modules (104, 106, 108) and integral therewith, or fixed thereto. Spacers (112, 114, 116, 118, 120, 122) are disposed on top of roofing membrane (102). Membrane (102) is supported on conventional roof framing, and attached thereto by conventional methods. In an alternative embodiment, the roofing assembly may have insulation block (322) below the spacers (314, 314', 315, 315'). The geometry of the pre-formed spacers (112, 114, 116, 118, 120, 122, 314, 314', 315, 315') is such that wind tunnel testing has shown its maximum effectiveness in reducing net forces of wind uplift on the overall assembly. Such construction results in a simple, lightweight, self-ballasting, readily assembled roofing assembly which resists the forces of wind uplift using no roofing penetrations.

Dinwoodie, Thomas L.

2006-02-28T23:59:59.000Z

80

Countries Commit to White Roofs, Potentially Offsetting the Emissions...  

Broader source: Energy.gov (indexed) [DOE]

Countries Commit to White Roofs, Potentially Offsetting the Emissions of Over 300 Power Plants Countries Commit to White Roofs, Potentially Offsetting the Emissions of Over 300...

Note: This page contains sample records for the topic "daily solar roof" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


81

Accelerated Aging of Roofing Surfaces | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Accelerated Aging of Roofing Surfaces Accelerated Aging of Roofing Surfaces Emerging Technologies Project for the 2013 Building Technologies Office's Program Peer Review...

82

Thermal Performance of Exposed Composed Roofs in Very Hot Dry Desert Region in Egypt (Toshky)  

E-Print Network [OSTI]

is considered the major part of the building envelop which exposed to high thermal load due to the high solar intensity and high outdoor air temperature through summer season which reach to 6 months. In Egypt the thermal effect of roof is increased as one go...

Khalil, M. H.; Sheble, S.; Morsey, M. S.; Fakhry, S.

2010-01-01T23:59:59.000Z

83

PERFORMANCE EVALUATION OF A SUSTAINABLE AND ENERGY EFFICIENT RE-ROOFING TECHNOLOGY USING FIELD-TEST DATA  

SciTech Connect (OSTI)

Three test attics were constructed to evaluate a new sustainable method of re-roofing utilizing photo-voltaic (PV) laminates, metal roofing panels, and PCM heat sink in the Envelope Systems Research Apparatus (ESRA) facility in the ORNL campus. Figure 1 is a picture of the three attic roofs located adjacent to each other. The leftmost roof is the conventional shingle roof, followed by the metal panel roof incorporating the cool-roof coating, and third from left is the roof with the PCM. On the PCM roof, the PV panels are seen as well; they're labelled from left-to-right as panels 5, 6 and 7. The metal panel roof consists of three metal panels with the cool-roof coating; in further discussion this is referred to as the infrared reflective (IRR) metal roof. The IRR metal panels reflect the incoming solar radiation and then quickly re-emit the remaining absorbed portion, thereby reducing the solar heat gain of the attic. Surface reflectance of the panels were measured using a Solar Spectrum Reflectometer. In the 0.35-2.0 {mu}m wavelength interval, which accounts for more than 94% of the solar energy, the IRR panels have an average reflectance of 0.303. In the infrared portion of the spectrum, the IRR panel reflectance is 0.633. The PCM roof consists of a layer of macro-encapsulated bio-based PCM at the bottom, followed by a 2-cm thick layer of dense fiberglass insulation with a reflective surface on top, and metal panels with pre-installed PV laminates on top. The PCM has a melting point of 29 C (84.2 F) and total enthalpy between 180 and 190 J/g. The PCM was macro-packaged in between two layers of heavy-duty plastic foil forming arrays of PCM cells. Two air cavities, between PCM cells and above the fiberglass insulation, helped the over-the-deck natural air ventilation. It is anticipated that during summer, this extra ventilation will help in reducing the attic-generated cooling loads. The extra ventilation, in conjunction with the PCM heat sink, are used to minimize thermal stresses due to the PV laminates on sunny days. In PV laminates sunlight is converted into electricity and heat simultaneous. In case of building integrated applications, a relatively high solar absorption of amorphous silicon laminates can be utilized during the winter for solar heating purposes with PCM providing necessary heat storage capacity. However, PV laminates may also generate increased building cooling loads during the summer months. Therefore, in this project, the PCM heat sink was to minimize summer heat gains as well. The PCM-fibreglass-PV assembly and the IRR metal panels are capable of being installed directly on top of existing shingle roofs during re-roofing, precluding the need for recycling or disposal of waste materials. The PV laminates installed on the PCM attic are PVL-144 models from Uni-Solar. Each laminate contains 22 triple junction amorphous silicon solar cells connected in series. The silicon cells are of dimensions 356 mm x 239 mm (14-in. x 9.4-in.). The PVL-144 laminate is encapsulated in durable ETFE (poly-ethylene-co-tetrafluoroethylene) high light-transmissive polymer. Table 1 lists the power, voltage and current ratings of the PVL-144 panel.

Biswas, Kaushik [ORNL; Miller, William A [ORNL; Childs, Phillip W [ORNL; Kosny, Jan [ORNL; Kriner, Scott [Metal Construction Association, Glenview, IL

2011-01-01T23:59:59.000Z

84

EECBG Success Story: Knox County Detention Facility Goes Solar...  

Broader source: Energy.gov (indexed) [DOE]

Hillsborough County Courthouse Goes Solar The roof of the justice center where a solar panel array will be installed to power a solar thermal water-heating system | Photo courtesy...

85

Plug and Play: Purchase, Install, and Connect Residential Solar...  

Energy Savers [EERE]

roof mounting system, eliminating the need for racking systems. Once the lightweight solar panels are in place, the system then self-tests for proper installation and...

86

EECBG Success Story: Alabama Justice Center Expands its Solar...  

Broader source: Energy.gov (indexed) [DOE]

costs and help the environment by installing renewable energy projects, including solar panels on the center's roof and on poles around the property, thanks to funding from...

87

Energy 101: Cool Roofs | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

slows the transfer of heat inside but doesn't eliminate it. Researchers have measured energy savings up to 10 to 15 percent for homes with cool roof coatings. And if a standard...

88

Design considerations for retractable-roof stadia  

E-Print Network [OSTI]

As existing open-air or fully enclosed stadia are reaching their life expectancies, cities are choosing to replace them with structures with moving roofs. This kind of facility provides protection from weather for spectators, ...

Frazer, Andrew H., 1981-

2005-01-01T23:59:59.000Z

89

Roof Coating Procedures and Their Productivity Gains  

E-Print Network [OSTI]

benefit of the installation of different roof coating technologies and comparable application procedures of these technologies are ambiguous. The focal point of this research is to determine the effective correlation between various commercially... available roof coatings, and productivity gains associated with these energy saving strategies. This type of situation is evidenced in the justification of energy rebates distributed by Florida Power & Light in exchange for the application of Energy Star...

Bonaby, J.; Schaub, D.

2006-01-01T23:59:59.000Z

90

In-situ aging of roof systems containing polyisocyanurate roof insulation foamed with alternative blowing agents  

SciTech Connect (OSTI)

Experimental polyisocyanurate (PIR) foam roof insulations with permeable facers were installed in roofing systems and continuously monitored for thermal performance for four years. The foams were produced using a specific formulation that represented current technology in 1989 and were blown with CFC-11, HCFC-123, and HCFC-141b. These foams were installed in roof systems comprised of loosely-laid insulation boards covered by either a loosely-laid single ply white or black membrane. The in-situ testing was carried out on an outdoor test facility, the Roof Thermal Research Apparatus (RTRA). Additional specimens of these foams were aged in the laboratory and periodically evaluated using laboratory measurement equipment. This paper summarizes the in-situ data compiled to date, compares these data with the laboratory results, and examines whether the proposed laboratory procedure for accelerating the aging of foams by the slicing and scaling method accurately predicts the aging characteristics of these materials installed in roof systems. These experiments are part of a joint industry/government project established to evaluate the technical viability of alternative HCFC blowing agents for rigid closed-cell polyisocyanurate foam roof insulations. Members of the project are the US Department of Energy (DOE)/Oak Ridge National Laboratory (ORNL), the US Environmental Protection Agency (EPA), the Society of the Plastics Industry-Polyurethane Division (SPI), the Polyisocyanurate Insulation Manufacturers Association (PIMA), and the National Roofing Contractors Association (NRCA).

Desjarlais, A.O.; Christian, J.E.; Graves, R.S.

1993-10-01T23:59:59.000Z

91

Comparative Summer Thermal Performance of Finished and Unfinished Metal Roofing Products with Composition Shingles  

E-Print Network [OSTI]

of five roofing systems against a control roof using dark shingles. The intent of the testing is to evaluate how roofing systems impact residential cooling energy use. Recent testing emphasizes evaluation of how increasingly popular metal roofing systems...

Parker, D. S.; Sherwin, J.; Sonne, J.

2004-01-01T23:59:59.000Z

92

Solar Ready: An Overview of Implementation Practices  

SciTech Connect (OSTI)

This report explores three mechanisms for encouraging solar ready building design and construction: solar ready legislation, certification programs for solar ready design and construction, and stakeholder education. These methods are not mutually exclusive, and all, if implemented well, could contribute to more solar ready construction. Solar ready itself does not reduce energy use or create clean energy. Nevertheless, solar ready building practices are needed to reach the full potential of solar deployment. Without forethought on incorporating solar into design, buildings may be incompatible with solar due to roof structure or excessive shading. In these cases, retrofitting the roof or removing shading elements is cost prohibitive. Furthermore, higher up-front costs due to structural adaptations and production losses caused by less than optimal roof orientation, roof equipment, or shading will lengthen payback periods, making solar more expensive. With millions of new buildings constructed each year in the United States, solar ready can remove installation barriers and increase the potential for widespread solar adoption. There are many approaches to promoting solar ready, including solar ready legislation, certification programs, and education of stakeholders. Federal, state, and local governments have the potential to implement programs that encourage solar ready and in turn reduce barriers to solar deployment. With the guidance in this document and the examples of jurisdictions and organizations already working to promote solar ready building practices, federal, state, and local governments can guide the market toward solar ready implementation.

Watson, A.; Guidice, L.; Lisell, L.; Doris, L.; Busche, S.

2012-01-01T23:59:59.000Z

93

Energy Performance Aspects of a Florida Green Roof Part 2  

E-Print Network [OSTI]

Green roof installation in the United States is growing at a significant rate. There are a number of reasons for this growth including rainwater runoff reduction and aesthetic benefits. Energy performance evaluations of green roofs, the subject...

Sonne, J.; Parker, D.

94

Cool Roofs: Your Questions Answered | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Answer: The West Building cool roof is estimated to save about 2,000 per year in reduced energy costs. In the spring, we will also be installing a cool roof on the Headquarters'...

95

Seismic Evidence For A Hydrothermal Layer Above The Solid Roof...  

Open Energy Info (EERE)

roof is overlain by a 150-200-m-thick low-velocity zone that may correspond to a fracture zone that hosts the hydrothermal circulation, and the roof itself may be the...

96

Energy Saving "Cool Roofs" Installed at Y-12 | National Nuclear...  

National Nuclear Security Administration (NNSA)

Home Field Offices Welcome to the NNSA Production Office NPO News Releases Energy Saving "Cool Roofs" Installed at Y-12 Energy Saving "Cool Roofs" Installed at Y-12 The...

97

Energy Saving 'Cool Roofs' Installed at Y-12 | National Nuclear...  

National Nuclear Security Administration (NNSA)

Photo Gallery Jobs Apply for Our Jobs Our Jobs Working at NNSA Blog Home NNSA Blog Energy Saving 'Cool Roofs' Installed at Y-12 Energy Saving 'Cool Roofs' Installed at Y-12...

98

Use of Renewable Energy in Buildings: Experiences With Solar Thermal Utilization  

E-Print Network [OSTI]

collectors on the south tilted roofs, south walls, balconies or awnings. Experiences on solar thermal utilization are mainly introduced in this paper, which include solar hot water systems with different design methods in residential buildings and solar-powered...

Wang, R.; Zhai, X.

2006-01-01T23:59:59.000Z

99

Cool Roof Resource Guide for Federal Agencies (Fact Sheet)  

SciTech Connect (OSTI)

Resource guide containing information and links for the evaluation and installation of cool roofs within the Federal Government

Not Available

2009-07-01T23:59:59.000Z

100

Evolution of cool-roof standards in the United States  

E-Print Network [OSTI]

Design (LEED) Green Building Rating System assigns one rating point for the use of a cool roof in its Sustainable

Akbari, Hashem

2008-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "daily solar roof" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


101

Former Construction Worker Finds New Career in Solar | Department...  

Broader source: Energy.gov (indexed) [DOE]

services. "This project is very unique in the solar field because we are working with light solar panels that fully adhere to the roof instead of having to be mounted," says...

102

Impact of Reflective Roofing on Cooling Electrical Use and Peak Demand in a Florida Retail Mall  

E-Print Network [OSTI]

on Energy Efficiency in Buildings, American Council for an Energy Efficient Economy, Washington D.C., Vol. 9, p. 1, August, 1992. Akbari, H., Bretz, S., Kurn, D.M. and Hanford, J., ?Peak Power and Cooling Energy Savings of High Albedo Roofs,? Energy... positive pressure dehumidified air ventilation in hot humid climates, quiet exhaust fan ventilation in cool climates, solar water heaters, heat pump water heaters, high efficiency right sized heating/cooling equipment, and gas fired combo space...

Parker, D. S.; Sonne, J. K.; Sherwin, J. R.

2002-01-01T23:59:59.000Z

103

Caprock Roofing | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 NoPublic Utilities Address: 160Benin: EnergyBostonFacility | Open EnergySolar33.6850215°,HatterasCapitaline

104

Covered Product Category: Cool Roof Products  

Broader source: Energy.gov [DOE]

FEMP provides acquisition guidance across a variety of product categories, including cool roof products, which are an ENERGY STAR®-qualified product category. Federal laws and requirements mandate that agencies meet these efficiency requirements in all procurement and acquisition actions that are not specifically exempted by law.

105

Permeable Pavements, Green Roofs, and Cisterns  

E-Print Network [OSTI]

, and water harvesting through them, such as asphalt and con- systems or cisterns. This new fact sheet crete and improve the water quality of runoff from new residential and commercial developments by using stormwater including the use of permeable pave- (sufaces that do not allow water to filter ments, green roofs

Hunt, William F.

106

Status of cool roof standards in the United States  

SciTech Connect (OSTI)

Since 1999, several widely used building energy efficiency standards, including ASHRAE 90.1, ASHRAE 90.2, the International Energy Conservation Code, and California's Title 24 have adopted cool roof credits or requirements. We review the technical development of cool roof provisions in the ASHRAE 90.1, ASHRAE 90.2, and California Title 24 standards, and discuss the treatment of cool roofs in other standards and energy-efficiency programs. The techniques used to develop the ASHRAE and Title 24 cool roof provisions can be used as models to address cool roofs in building energy standards worldwide.

Akbari, Hashem; Levinson, Ronnen

2007-06-01T23:59:59.000Z

107

Asymmetry of Daily Temperature Records YOSEF ASHKENAZY  

E-Print Network [OSTI]

Asymmetry of Daily Temperature Records YOSEF ASHKENAZY Solar Energy and Environmental Physics, BIDR author address: Yosef Ashkenazy, Department of Solar Energy and Environmental Physics, The J. Blaustein cold fronts are significantly faster and steeper than warm fronts, and to intrusions of cold air

Tziperman, Eli

108

An investigation of the efficiency of the receiver of a solar thermal cooker with thermal energy storage.  

E-Print Network [OSTI]

??A small scale solar concentrator cooker with a thermal energy storage system was designed, constructed and tested on the roof of the Physics building at… (more)

Heilgendorff, Heiko Martin.

2015-01-01T23:59:59.000Z

109

Evolution of cool-roof standards in the United States  

E-Print Network [OSTI]

2000 Summer Study on Energy Efficiency in Buildings 1:1-11 (to energy efficiency standards for buildings. Online ataddress cool roofs in building energy-efficiency standards

Akbari, Hashem

2008-01-01T23:59:59.000Z

110

Energy Department Completes Cool Roof Installation on DC Headquarters...  

Office of Environmental Management (EM)

50 degrees cooler. A study by researchers at Lawrence Berkeley National Laboratory (LBNL) found that using cool roofs and cool pavements in cities around the world can help...

111

Secretary Chu Announces Steps to Implement Cool Roofs at DOE...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

emissions. A recent study by researchers at Lawrence Berkeley National Laboratory (LBNL) found that using cool roofs and cool pavements in cities around the world can help...

112

Evolution of cool-roof standards in the United States  

E-Print Network [OSTI]

reduce building energy use, while energy-neutral cool-roofbuilding when the roof is cooler than the inside air. One can develop an energy-neutral

Akbari, Hashem

2008-01-01T23:59:59.000Z

113

Flourescent Pigments for High-Performance Cool Roofing and Facades...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

class of dark-colored pigments for cool metal roof and faade coatings that incorporate near-infrared fluorescence and reflectance to improve energy performance. Image: PPG...

114

Cool roofs as an energy conservation measure for federal buildings  

SciTech Connect (OSTI)

We have developed initial estimates of the potential benefits of cool roofs on federal buildings and facilities (building scale) as well as extrapolated the results to all national facilities under the administration of the Federal Energy Management Program (FEMP). In addition, a spreadsheet ''calculator'' is devised to help FEMP estimate potential energy and cost savings of cool roof projects. Based on calculations for an average insulation level of R-11 for roofs, it is estimated that nationwide annual savings in energy costs will amount to $16M and $32M for two scenarios of increased roof albedo (moderate and high increases), respectively. These savings, corresponding to about 3.8 percent and 7.5 percent of the base energy costs for FEMP facilities, include the increased heating energy use (penalties) in winter. To keep the cost of conserved energy (CCE) under $0.08 kWh-1 as a nationwide average, the calculations suggest that the incremental cost for cool roofs should not exceed $0.06 ft-2, assuming that cool roofs have the same life span as their non-cool counterparts. However, cool roofs usually have extended life spans, e.g., 15-30 years versus 10 years for conventional roofs, and if the costs of re-roofing are also factored in, the cutoff incremental cost to keep CCE under $0.08 kWh-1 can be much higher. In between these two ends, there is of course a range of various combinations and options.

Taha, Haider; Akbari, Hashem

2003-04-07T23:59:59.000Z

115

Pv-Thermal Solar Power Assembly  

DOE Patents [OSTI]

A flexible solar power assembly includes a flexible photovoltaic device attached to a flexible thermal solar collector. The solar power assembly can be rolled up for transport and then unrolled for installation on a surface, such as the roof or side wall of a building or other structure, by use of adhesive and/or other types of fasteners.

Ansley, Jeffrey H. (El Cerrito, CA); Botkin, Jonathan D. (El Cerrito, CA); Dinwoodie, Thomas L. (Piedmont, CA)

2001-10-02T23:59:59.000Z

116

Cool Roof Calculator | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 NoPublic Utilities Address: 160Benin:EnergyWisconsin:2003) | OpenMinor PermitControllingCook, Minnesota: Energy3Roof

117

Energy 101: Cool Roofs | Department of Energy  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation ProposedUsing Zirconia Nanoparticles asSecond stage ofDefects on . GradeCool Roofs Energy 101:

118

Next Generation Attics and Roof Systems  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion | Department ofT ib l L d F S iPartnership Program |MillionNext Generation Attics and Roof

119

Effects of white roofs on urban temperature in a global climate model  

E-Print Network [OSTI]

over all urban areas, the annual mean heat island decreased by 33%. Urban daily maximum temperature decreased by 0.6°C and daily minimum temperature by 0.3°C. Spatial variability in the heat island response is caused by changes in absorbed solar...

Oleson, Keith W.; Bonan, Gordon B.; Feddema, Johannes J.

2010-02-01T23:59:59.000Z

120

Rooftop Membrane Temperature Reductions with Green Roof Technology in South-Central Texas  

E-Print Network [OSTI]

Early green roof cooling and energy reduction research in North America took place in Canada and the northern latitudes of the United States, where green roofs reduced rooftop temperatures by 70% to 90%. Less is known about green roof technology...

Dvorak, B.

Note: This page contains sample records for the topic "daily solar roof" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


121

Estimating Heat and Mass Transfer Processes in Green Roof Systems: Current Modeling Capabilities and Limitations (Presentation)  

SciTech Connect (OSTI)

This presentation discusses estimating heat and mass transfer processes in green roof systems: current modeling capabilities and limitations. Green roofs are 'specialized roofing systems that support vegetation growth on rooftops.'

Tabares Velasco, P. C.

2011-04-01T23:59:59.000Z

122

Roofing in the Urban Environment: Pollution Source of Opportunity for  

E-Print Network [OSTI]

demand ­ surrogate for organics · Heavy metals and major cations (copper, h i d i l d i ichromium1 Roofing in the Urban Environment: Pollution Source of Opportunity for Source Control? Shirley E Facility Metal Range (mg/L) Average % COV (%) Direct roof runoff from 7 storms Metal Range (mg/L) Average

Clark, Shirley E.

123

Roofing in the Urban Environment: Pollution Source of Opportunity for  

E-Print Network [OSTI]

· Heavy metals and major cations (copper, h i d i l d i ichromium, cadmium, lead, zinc, arsenic, calcium1 Roofing in the Urban Environment: Pollution Source of Opportunity for Source Control? Shirley E Dissolved: 35 12,200 Dissolved: 11,900 From Good 1993 Galvanized uncoated Roofing ­ Airport Facility Metal

Clark, Shirley E.

124

PRESSURIZATION OF FIXED ROOF STORAGE TANKS DUE TO EXTERNAL FIRES  

E-Print Network [OSTI]

PRESSURIZATION OF FIXED ROOF STORAGE TANKS DUE TO EXTERNAL FIRES Fabien FouiHen, INERIS, Parc. Reflections led on this accident have pushed to consider the phenomenon of tank pressurization as a potential initiating event of the fire ball observed. In concrete terms, when a fixed roof storage tank is surrounded

Paris-Sud XI, Université de

125

E-Print Network 3.0 - antisolar insulated roof Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

made of? Green roof benefits: Insulates building,lowering heating costs Absorption of rainwater... including a green roof. A green ... Source: Kane, Andrew S. - Aquatic...

126

Solar air heating system for combined DHW and space heating  

E-Print Network [OSTI]

Solar air heating system for combined DHW and space heating solar air collector PV-panel fannon-return valve DHW tank mantle cold waterhot water roof Solar Energy Centre Denmark Danish Technological Institute SEC-R-29 #12;Solar air heating system for combined DHW and space heating Søren �stergaard Jensen

127

November 21, 2000 PV Lesson Plan 1 Solar Cells  

E-Print Network [OSTI]

November 21, 2000 PV Lesson Plan 1 ­ Solar Cells Prepared for the Oregon Million Solar Roofs Coalition By Frank Vignola ­ University of Oregon Solar Radiation Monitoring Lab John Hocken ­ South Eugene High School Gary Grace ­ South Eugene High School In Schools #12;1 Solar Cells Lesson Plan Content

Oregon, University of

128

Solar Powered Classroom  

SciTech Connect (OSTI)

A group of fourth graders in Durham, North Carolina, are showing America the way to a clean energy future. They are installing solar panels on their classroom roof for a project that goes above and beyond a normal day in school. From researching solar panel installation, to generating funds for the project via Kickstarter, these are students who put their plans into action. Their accomplishments go beyond the classroom and stress the importance of getting people of all ages involved in renewable energy.

none

2013-06-13T23:59:59.000Z

129

Solar Powered Classroom  

ScienceCinema (OSTI)

A group of fourth graders in Durham, North Carolina, are showing America the way to a clean energy future. They are installing solar panels on their classroom roof for a project that goes above and beyond a normal day in school. From researching solar panel installation, to generating funds for the project via Kickstarter, these are students who put their plans into action. Their accomplishments go beyond the classroom and stress the importance of getting people of all ages involved in renewable energy.

none

2013-06-27T23:59:59.000Z

130

Effects of solar photovoltaic panels on roof heat transfer  

E-Print Network [OSTI]

savings of shade  trees, Energy and Buildings 25  (1997b) trees planted near residential buildings resulted in a seasonal cooling energy 

Dominguez, Anthony; Kleissl, Jan; Luvall, Jeffrey C

2011-01-01T23:59:59.000Z

131

Project Profile: Innovative Ballasted Flat Roof Solar Photovoltaic...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

alone cost about 0.95 per watt for rooftop installations. Cascade is developing a plastic-based photovoltaic (PV) racking system that reduces mechanical and electrical labor,...

132

June 2009 UWMREPORT 15 solar cells turn Bolton roof  

E-Print Network [OSTI]

the hours of highest demand ­ in the late afternoon. And stor- ing energy is expensive. Nasiri's lab peak times. "We want to convert that PV power from off-load [low demand] to peak load," says Nasiri and associate professor of health sciences at UWM. "She serves on multiple committees and advances the profile

Saldin, Dilano

133

Hawaii Marine Base Installs Solar Roofs | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergyENERGYWomentheATLANTA,Fermi National Accelerator LaboratoryHot andguide|SeasonsLorelei Laird

134

Oklahoma Tribe to Install Solar Roof | Department of Energy  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion | Department ofT ib l L d F SSales LLC OrderEfficiencyOceanOctober0High School OilOklahoma

135

Project Profile: Innovative Ballasted Flat Roof Solar Photovoltaic Racking  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion | Department ofT ib l L d FNEPA/309DepartmentDepartment ofCycles |PerovskitesSystem |

136

SCE Roof Project Solar Power Plant | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia:FAQ < RAPID Jump to: navigation, searchVirginiaRoosevelt GardensUK-basedRutherford

137

ASU Solarization Program June/July 2011 Report 1 CAMPUS SOLARIZATION  

E-Print Network [OSTI]

cost of developing solar photovoltaic systems by making a significant and long-term commitment electricity using solar photovoltaic systems. · To utilize roof and other ASU-owned spaces to effectively. · To facilitate the investment in solar photovoltaic systems by industries and businesses within the state

Rhoads, James

138

Solar energt focusing means  

SciTech Connect (OSTI)

A highly efficient solar focusing means being hollow and in semi-cylindrical or arcuate shape, the surface has such fine menisci as to act like convex lenses to focus solar rays towards the center of the focusing body, irrespective of the position of the sun, where a solar energy conversion device is located and further acts to disperse light reflected thereonto from the solar energy conversion device. The focusing body can assume several shapes and thus can be used for roofing of a building, such as a house, or the like, and still be aesthetically pleasing.

Tsubota, J.

1981-11-10T23:59:59.000Z

139

Soiling losses for solar photovoltaic systems in California  

E-Print Network [OSTI]

additional solar energy could be harvested through panelsolar energy modeled from SAW ( ), the daily (relative) DC solar conversion efficiency ( ) for the solar panels

Mejia, Felipe A; Kleissl, Jan

2013-01-01T23:59:59.000Z

140

Flexible shaft and roof drilling system  

DOE Patents [OSTI]

A system for drilling holes in the roof of a mine has a flexible shaft with a pair of oppositely wound, coaxial flat bands. One of the flat bands defines an inner spring that is wound right handed into a helical configuration, adjacent convolutions being in nesting relationship to one another. The other flat band defines an outer spring that is wound left handed into a helical configuration about the inner band, adjacent convolutions being nesting relationship with one another. A transition member that is configured to hold a rock bit is mounted to one end of the flexible shaft. When torque and thrust are applied to the flexible shaft by a driver, the inner spring expands outwardly and the outer spring contracts inwardly to form a relatively rigid shaft.

Blanz, John H. (Carlisle, MA)

1981-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "daily solar roof" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


141

Pierre's Prototype for Wind and Solar - Capitol Lake Plaza |...  

Broader source: Energy.gov (indexed) [DOE]

major components of the renovation are about to appear at the building's highest point: solar panels and wind turbines are being installed on the roof. The 80 photovoltaic (PV)...

142

DAILY PROGRAMME Day Time Daily Plan  

E-Print Network [OSTI]

to draw a bird 16:45h - 17:10h Hanneline Smit - Birds and Solar Energy in South Africa 17:10h - 17:35h

de Villiers, Marienne

143

Solar powered desalination system  

E-Print Network [OSTI]

of the electrical power output to the solar power input), aSolar Energy Calculator using Google Maps 23 Table 1.24: PV System Power Production Average Daily Irradiance (kWh/m2) Instillation Efficiency Labeled Efficiency Output

Mateo, Tiffany Alisa

2011-01-01T23:59:59.000Z

144

Evaporative Roof Cooling- A Simple Solution to Cut Cooling Costs  

E-Print Network [OSTI]

Since the “Energy Crisis” Evaporative Roof Cooling Systems have gained increased acceptance as a cost effective method to reduce the high cost of air conditioning. Documented case histories in retro-fit installations show direct energy savings...

Abernethy, D.

145

Plain Talk About Condensation and Radiation Below Metal Roof Assemblies  

E-Print Network [OSTI]

During recent decades an increasing number of users have chosen metal roofing for various commercial, industrial and institutional buildings. Because of several advantages, construction of new pre-engineered and "hybrid" buildings has outpaced low...

Ward, L.

146

Evaporative Roof Cooling - A Simple Solution to Cut Cooling Costs  

E-Print Network [OSTI]

Since the "Energy Crisis" Evaporative Roof Cooling Systems have gained increased acceptance as a cost effective method to reduce the high cost of air conditioning. Documented case histories in retrofit installations show direct energy savings...

Abernethy, D.

1985-01-01T23:59:59.000Z

147

NREL showcase solar systems and energy efficient design  

SciTech Connect (OSTI)

THe Thermal Test Facility at NREL, which should be completed in the summer of 1996, will incorporate natural lighting from clerestories and may other solar and energy-efficiency features; roof-mounted solar collectors, which will be monitored as part of NREL`s work on active solar systems, will help to heat water and interior spaces in the building.

NONE

1995-12-31T23:59:59.000Z

148

November 21, 2000 PV Lesson Plan 2 Solar Electric Arrays  

E-Print Network [OSTI]

rating of a photovoltaic module is typically quoted as the power output of the module when the incidentNovember 21, 2000 PV Lesson Plan 2 ­ Solar Electric Arrays Prepared for the Oregon Million Solar Roofs Coalition By Frank Vignola ­ University of Oregon Solar Radiation Monitoring Lab John Hocken

Oregon, University of

149

Measuring solar reflectance Part I: Defining a metric that accurately predicts solar heat gain  

SciTech Connect (OSTI)

Solar reflectance can vary with the spectral and angular distributions of incident sunlight, which in turn depend on surface orientation, solar position and atmospheric conditions. A widely used solar reflectance metric based on the ASTM Standard E891 beam-normal solar spectral irradiance underestimates the solar heat gain of a spectrally selective 'cool colored' surface because this irradiance contains a greater fraction of near-infrared light than typically found in ordinary (unconcentrated) global sunlight. At mainland U.S. latitudes, this metric RE891BN can underestimate the annual peak solar heat gain of a typical roof or pavement (slope {le} 5:12 [23{sup o}]) by as much as 89 W m{sup -2}, and underestimate its peak surface temperature by up to 5 K. Using R{sub E891BN} to characterize roofs in a building energy simulation can exaggerate the economic value N of annual cool-roof net energy savings by as much as 23%. We define clear-sky air mass one global horizontal ('AM1GH') solar reflectance R{sub g,0}, a simple and easily measured property that more accurately predicts solar heat gain. R{sub g,0} predicts the annual peak solar heat gain of a roof or pavement to within 2 W m{sup -2}, and overestimates N by no more than 3%. R{sub g,0} is well suited to rating the solar reflectances of roofs, pavements and walls. We show in Part II that R{sub g,0} can be easily and accurately measured with a pyranometer, a solar spectrophotometer or version 6 of the Solar Spectrum Reflectometer.

Levinson, Ronnen; Akbari, Hashem; Berdahl, Paul

2010-05-14T23:59:59.000Z

150

Comparison of Software Models for Energy Savings from Cool Roofs  

SciTech Connect (OSTI)

A web-based Roof Savings Calculator (RSC) has been deployed for the United States Department of Energy as an industry-consensus tool to help building owners, manufacturers, distributors, contractors and researchers easily run complex roof and attic simulations. This tool employs modern web technologies, usability design, and national average defaults as an interface to annual simulations of hour-by-hour, whole-building performance using the world-class simulation tools DOE-2.1E and AtticSim in order to provide estimated annual energy and cost savings. In addition to cool reflective roofs, RSC simulates multiple roof and attic configurations including different roof slopes, above sheathing ventilation, radiant barriers, low-emittance roof surfaces, duct location, duct leakage rates, multiple substrate types, and insulation levels. A base case and energy-efficient alternative can be compared side-by-side to estimate monthly energy. RSC was benchmarked against field data from demonstration homes in Ft. Irwin, California; while cooling savings were similar, heating penalty varied significantly across different simulation engines. RSC results reduce cool roofing cost-effectiveness thus mitigating expected economic incentives for this countermeasure to the urban heat island effect. This paper consolidates comparison of RSC s projected energy savings to other simulation engines including DOE-2.1E, AtticSim, Micropas, and EnergyPlus, and presents preliminary analyses. RSC s algorithms for capturing radiant heat transfer and duct interaction in the attic assembly are considered major contributing factors to increased cooling savings and heating penalties. Comparison to previous simulation-based studies, analysis on the force multiplier of RSC cooling savings and heating penalties, the role of radiative heat exchange in an attic assembly, and changes made for increased accuracy of the duct model are included.

New, Joshua Ryan [ORNL; Miller, William A [ORNL; Huang, Yu (Joe) [White Box Technologies; Levinson, Ronnen [Lawrence Berkeley National Laboratory (LBNL)

2014-01-01T23:59:59.000Z

151

SOLAR POWERING OF HIGH EFFICIENCY ABSORPTION CHILLER  

SciTech Connect (OSTI)

This is the Final Report for two solar cooling projects under this Cooperative Agreement. The first solar cooling project is a roof-integrated solar cooling and heating system, called the Power Roof{trademark}, which began operation in Raleigh, North Carolina in late July 2002. This system provides 176 kW (50 ton) of solar-driven space cooling using a unique nonimaging concentrating solar collector. The measured performance of the system during its first months of operation is reported here, along with a description of the design and operation of this system. The second solar cooling system, with a 20-ton capacity, is being retrofit to a commercial office building in Charleston, South Carolina but has not yet been completed.

Randy C. Gee

2004-11-15T23:59:59.000Z

152

Implementation of solar-reflective surfaces: Materials and utility programs  

SciTech Connect (OSTI)

This report focuses on implementation issues for using solar-reflective surfaces to cool urban heat islands, with specific examples for Sacramento, California. Advantages of solar-reflective surfaces for reducing energy use are: (1) they are cost-effective if albedo is increased during routine maintenance; (2) the energy savings coincide with peak demand for power; (3) there are positive effects on environmental quality; and (4) the white materials have a long service life. Important considerations when choosing materials for mitigating heat islands are identified as albedo, emissivity, durability, cost, pollution and appearance. There is a potential for increasing urban albedo in Sacramento by an additional 18%. Of residential roofs, we estimate that asphalt shingle and modified bitumen cover the largest area, and that built-up roofing and modified bitumen cover the largest area of commercial buildings. For all of these roof types, albedo may be increased at the time of re-roofing without any additional cost. When a roof is repaired, a solar-reflective roof coating may be applied to significantly increase albedo and extend the life of the root Although a coating may be cost-effective if applied to a new roof following installation or to an older roof following repair, it is not cost-effective if the coating is applied only to save energy. Solar-reflective pavement may be cost-effective if the albedo change is included in the routine resurfacing schedule. Cost-effective options for producing light-colored pavement may include: (1) asphalt concrete, if white aggregate is locally available; (2) concrete overlays; and (3) newly developed white binders and aggregate. Another option may be hot-rolled asphalt, with white chippings. Utilities could promote solar-reflective surfaces through advertisement, educational programs and cost-sharing of road resurfacing.

Bretz, S.; Akbari, H.; Rosenfeld, A.; Taha, H.

1992-06-01T23:59:59.000Z

153

Asphalt roofing industry Fourier transform infrared spectroscopy modified bitumen  

SciTech Connect (OSTI)

A Request for Emissions Testing at Four Asphalt Roofing and Processing Facilities was submitted by the US EPA Emission Standards Division (ESD), Minerals and Inorganic Chemicals Group (MICG) to the Emission Measurement Center (EMC). The Emission Measurement Center directed Midwest Research Institute (MRI) to conduct emissions testing at asphalt roofing plants. This report presents results of MRI`s FTIR and Method 25A testing conducted at US Intec in Port Arthur, Texas. The field measurements were performed in September 1997 under several test conditions for both controlled and uncontrolled emissions.

NONE

1999-07-01T23:59:59.000Z

154

PV/thermal solar power assembly  

DOE Patents [OSTI]

A flexible solar power assembly (2) includes a flexible photovoltaic device (16) attached to a flexible thermal solar collector (4). The solar power assembly can be rolled up for transport and then unrolled for installation on a surface, such as the roof (20, 25) or side wall of a building or other structure, by use of adhesive and/or other types of fasteners (23).

Ansley, Jeffrey H.; Botkin, Jonathan D.; Dinwoodie, Thomas L.

2004-01-13T23:59:59.000Z

155

Boots on the Roof | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Office of InspectorConcentrating SolarElectricEnergyCTBarre BiomassTHIS PAGE ISJumpSphereBonitaBooleanElectric

156

Status of cool roof standards in the United States  

E-Print Network [OSTI]

2006. Inclusion of solar reflectance and thermal emittance2006. Inclusion of solar reflectance and thermal emittanceproposed values of solar absorptance and thermal emittance (

Akbari, Hashem; Levinson, Ronnen

2008-01-01T23:59:59.000Z

157

Vegetated Roof Water-Balance Model: Experimental and Model Results  

E-Print Network [OSTI]

urbanization effects on the water cycle. Although there are many stormwater best management practices (BMPs (ET) and soil media water storage between storm events. Lazzarin et al. (2005) estimated that ET ratesVegetated Roof Water-Balance Model: Experimental and Model Results James A. Sherrard Jr.1

158

Preliminary Analysis of Energy Consumption For Cool Roofing Measures  

E-Print Network [OSTI]

decisions by offering design requirements and establishing building codes. Over the last decade, muchPreliminary Analysis of Energy Consumption For Cool Roofing Measures By Joe Mellott, Joshua New to reduce energy demand by reflecting sunlight away from structures and back into the atmosphere. By use

Wang, Xiaorui "Ray"

159

Forecasting of Solar Radiation Detlev Heinemann, Elke Lorenz, Marco Girodo  

E-Print Network [OSTI]

Forecasting of Solar Radiation Detlev Heinemann, Elke Lorenz, Marco Girodo Oldenburg University have been presented more than twenty years ago (Jensenius, 1981), when daily solar radiation forecasts

Heinemann, Detlev

160

Green Roof Media Selection forGreen Roof Media Selection for the Minimization of Pollutantthe Minimization of Pollutant  

E-Print Network [OSTI]

Decreased roofing costs Increased insulation and energy efficiencyIncreased insulation and energy efficiency ­­ U for retrofits Tested membranes highly recommendedTested membranes highly recommended ­­ Plastic root barrier above membrane?Plastic root barrier above membrane? ­­ Flood testing and leak detection units

Clark, Shirley E.

Note: This page contains sample records for the topic "daily solar roof" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


161

ARM - Daily Report Archive  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary)morphinanInformationbudapest Comments? We would love toContact Information Related LinksDaily Report Archive

162

Load test of the 277W Building high bay roof deck and support structure  

SciTech Connect (OSTI)

The 277W Building high bay roof area was load tested according to the approved load-test procedure, WHC-SD-GN-TP-30015, Revision 1. The 277W Building is located in the 200 West Area of the Hanford Site and has the following characteristics: roof deck -- wood decking supported by 4 x 14 timber purlins; roof membrane -- tar and gravel; roof slope -- flat (<10 deg); and roof elevation -- maximum height of about 63 ft. The 227W Building was visited in March 1994 for a visual inspection. During this inspection, cracked areas were visible in the decking, but it was not possible to determine whether these cracks extended completely through the decking, which is 2-in. thick. The building was revisited in March 1994 for the purpose of writing this test report. Because the roof requires personnel access, a test was determined to be the best way to qualify the roof. The conclusions are that the roof has been qualified for 500-lb total roof load and that the ``No Roof Access`` signs can be changed to ``Roof Access Restricted`` signs.

McCoy, R.M.

1994-12-02T23:59:59.000Z

163

01.07.2013, 2013_EnviroInfo_wald_hc1_short.doc HelioClim-1: 21-years of daily values in solar radiation in one-click  

E-Print Network [OSTI]

manuscript, published in "27th International Conference on Informatics for Environmental Protection, Hambourg as the main use of these data relates to investment decision in solar plants and selection of appropriate

Paris-Sud XI, Université de

164

Considerations Related to Connecting Solar Generating Facilities to the Electrical Grid  

E-Print Network [OSTI]

Considerations Related to Connecting Solar Generating Facilities to the Electrical Grid March 2011 voltages are nominally 4.5kv and 13 2kv The solar system must maintain voltageand 13.2kv. The solar system) or multiple sites (multiple leases, interconnect points, construction forces) Ground based, roof top (weight

Homes, Christopher C.

165

Effect of Surface Mass on Roof Thermal Performance  

E-Print Network [OSTI]

EFFECT OF SURFACE MASS ON ROOF THERMAL PERFORMANCE KENNETH E. WILKES, PAUL H. SHIPP, AND JOHN P. SANDERS Staff Members Oak Ridge National Laboratory Oak Ridge, Tennessee ABSTRACT The roof of a building is exposed to the most severe... 10 a0 so 4a 30 0 I1 Y J4 49 I0 12 M 88 101 110 IS1 144 158 Ilpra I. Cq.ria*n of I(ururm4 ad ?rdIoud mrm. T-raru... .I!A Y.&t Pluu. for am lara luf krh Wan hmr ?*rid T-rmauma 01- tor rr.41otlnu HEAVY PAVER, MAY 1 - MAY 7, 1986 -MI CHLn J I I...

Wilkes, K. E.; Shipp, P. H.; Sanders, J. P.

1988-01-01T23:59:59.000Z

166

No Roof, No Problem: Shared Solar Programs Make Solar Possible For You |  

Office of Environmental Management (EM)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "of EnergyEnergyENERGY TAXBalanced Scorecard Federal2EnergyDepartment ofNews NewsNick Sinai97-01

167

Thermal Performance Evaluation of Innovative Metal Building Roof Assemblies  

SciTech Connect (OSTI)

In order to meet the coming energy codes, multiple layers of various insulation types will be required. The demand for greater efficiency has pushed insulation levels beyond the cavity depth. These experiments show the potential for improving metal building roof thermal performance. Additional work is currently being done by several stakeholders, so the data is expanding. These experiments are for research and development purposes, and may not be viable for immediate use.

Walker, Daniel James [ORNL; Zaltash, Abdolreza [ORNL; Atchley, Jerald Allen [ORNL

2011-01-01T23:59:59.000Z

168

Roofing as a Contributor to Urban Runoff Pollution  

E-Print Network [OSTI]

at: http://www.eng.ua.edu/~rpitt Map courtesy of U.S. Geological Website on Acid Rain #12;2 Roof · Summer 2002: Laboratory TCLP (acid rain simulation) · Fall/Winter 2002 and Spring 2003: Laboratory Testing Set-Up at Penn State Harrisburg During Rain Event, August 2005 pH Rainfall pH Range: 3.9 ­ 6

Clark, Shirley E.

169

A Study of the Energy-Saving Potential of Metal Roofs Incorporating Dynamic Insulation Systems  

SciTech Connect (OSTI)

This article presents various metal roof configurations that were tested at Oak Ridge National Laboratory in Tennessee, U.S. between 2009 and 2013, and describes their potential for reducing the attic-generated space-conditioning loads. These roofs contained different combinations of phase-change material, rigid insulation, low emittance surface, and above-sheathing ventilation with standing-seam metal panels on top. These roofs were designed to be installed on existing roofs decks, or on top of asphalt shingles for retrofit construction. All the tested roofs showed the potential for substantial energy savings compared to an asphalt shingle roof, which was used as a control for comparison. The roofs were constructed on a series of adjacent attics separated at the gables using thick foam insulation. The attics were built on top of a conditioned room. All attics were vented at the soffit and ridge. The test roofs and attics were instrumented with an array of thermocouples. Heat flux transducers were installed in the roof deck and attic floor (ceiling) to measure the heat flows through the roof and between the attic and conditioned space below. Temperature and heat flux data were collected during the heating, cooling and swing seasons over a three-year period. Data from previous years of testing have been published. Here, data from the latest roof configurations being tested in year three of the project are presented. All test roofs were highly effective in reducing the heat flows through the roof and ceiling, and in reducing the diurnal attic-temperature fluctuations.

Biswas, Kaushik [ORNL; Miller, William A [ORNL; Kriner, Scott [Metal Construction Association, Glenview, IL; Manlove, Gary [Metanna, Monument, CO

2013-01-01T23:59:59.000Z

170

Thermal resistance of prototypical cellular plastic roof insulations  

SciTech Connect (OSTI)

A cooperative industry/government project was initiated in 1989 to evaluate the viability of alternative hydrochlorofluorocarbons (HCFCs) as blowing agents in polyisocyanurate (PIR) boardstock for roofing applications. Five sets of PIR boardstock were produced to industry specifications for current roof insulation technology. The boardstock allowed the performance of four alternative blowing agents (HCFC-123, HCFC-14lb, and two blends of HCFC-123 and HCFC-14lb) to compared to CFC-11. Laboratory and field tests show the relative thermal performance of the individual PIR boards. One set of laboratory tests show the thermal conductivity (k) from 0 to 50{degree}C (30 to 120{degree}F) of boards prior to installation and as a function of time after exposure to field conditions in the Roof Thermal Research Apparatus (0, 9, and 15 months). Another set of laboratory tests show k as a function of aging time 24{degree}C (75{degree}F) and 65{degree}C (150{degree}F) for full-thickness, half-thickness, and quarter-thickness specimens. These test results and modeling calculations show the value of thin specimen testing as an accelerated aging procedure. 24 refs., 5 figs., 7 tabs.

McElroy, D.L.; Graves, R.S.; Weaver, F.J.

1991-01-01T23:59:59.000Z

171

Sensitivity of Low Sloped Roofs Designs to Initial Water and Air Leakage  

E-Print Network [OSTI]

.Sc. Research Scientist VTT, Espoo, Finland Andre Desjarlais. B.Sc.E Program Manager, Oak Ridge National Laboratory 1 Bethel Valley Rd, Oak Ridge TN, 37831-6070 ABSTRACT Liquid water in low sloped roofs almost always causes problems... roofs in Finland (area varying from 200 m2 up to 5 000 m2). A laboratory hot box apparatus (Kouhia and Nieminen, 1999) was also used to further quantify the performance of the grooved roof ventilation system and to show the thermal consequences...

Karagiozis, A.; Desjarlais, A.; Salonvaara, M.

2002-01-01T23:59:59.000Z

172

Comparison of the Perception of Facility Managers on Green Roofs Attributes and Barriers to their Implementation  

E-Print Network [OSTI]

on Green Roofs Wong et, al (2005) conducted a study on perception of building professionals on the issues of green roofs. The objective of the study was to determine the current perception of building professionals on the issues of green roof... development and any conflicting opinions among them. Wong et, al (2005) used two components for the field study, a self-administered postal survey questionnaire and interviews. The survey was conducted among three target populations, architectural firms...

Ferrer Garcia, Eduardo R

2014-07-24T23:59:59.000Z

173

Modeling and Analysis of Solar Radiation Potentials on Building Rooftops  

SciTech Connect (OSTI)

The active application of photovoltaic for electricity generation could effectively transform neighborhoods and commercial districts into small, localized power plants. This application, however, relies heavily on an accurate estimation of the amount of solar radiation that is available on individual building rooftops. While many solar energy maps exist at higher spatial resolution for concentrated solar energy applications, the data from these maps are not suitable for roof-mounted photovoltaic for several reasons, including lack of data at the appropriate spatial resolution and lack of integration of building-specific characteristics into the models used to generate the maps. To address this problem, we have developed a modeling framework for estimating solar radiation potentials on individual building rooftops that is suitable for utility-scale applications as well as building-specific applications. The framework uses light detection and ranging (LIDAR) data at approximately 1-meter horizontal resolution and 0.3-meter vertical resolution as input for modeling a large number of buildings quickly. One of the strengths of this framework is the ability to parallelize its implementation. Furthermore, the framework accounts for building specific characteristics, such as roof slope, roof aspect, and shadowing effects, that are critical to roof-mounted photovoltaic systems. The resulting data has helped us to identify the so-called solar panel sweet spots on individual building rooftops and obtain accurate statistics of the variation in solar radiation as a function of time of year and geographical location.

Omitaomu, Olufemi A [ORNL; Kodysh, Jeffrey B [ORNL; Bhaduri, Budhendra L [ORNL

2012-01-01T23:59:59.000Z

174

Backstage at the Daily Show  

Broader source: Energy.gov [DOE]

Backstage footage from Secretary Chu's appearance on the Daily Show where he discuses the green room candy dish and possible lighting considerations.

175

Cooling energy savings potential of light-colored roofs for residential and commercial buildings in 11 US metropolitan areas  

SciTech Connect (OSTI)

Light-colored roofs reflect more sunlight than dark roofs, thus they keep buildings cooler and reduce air-conditioning demand. Typical roofs in the United States are dark, which creates a potential for savings energy and money by changing to reflective roofs. In this report, the authors make quantitative estimates of the impact of roof color by simulating prototypical buildings with light- and dark-colored roofs and calculating savings by taking the differences in annual cooling and heating energy use, and peak electricity demand. Monetary savings are calculated using local utility rates. Savings are estimated for 11 U.S. Metropolitan Statistical Areas (MSAs) in a variety of climates.

Konopacki, S.; Akbari, H.; Pomerantz, M.; Gabersek, S.; Gartland, L.

1997-05-01T23:59:59.000Z

176

Asphalt Roofing Shingles Into Energy Project Summary Report  

SciTech Connect (OSTI)

Based on a widely cited September, 1999 report by the Vermont Agency of Natural Resources, nearly 11 million tons of asphalt roofing shingle wastes are produced in the United States each year. Recent data suggests that the total is made up of about 9.4 million tons from roofing tear-offs and about 1.6 million tons from manufacturing scrap. Developing beneficial uses for these materials would conserve natural resources, promote protection of the environment and strengthen the economy. This project explored the feasibility of using chipped asphalt shingle materials in cement manufacturing kilns and circulating fluidized bed (CFB) boilers. A method of enhancing the value of chipped shingle materials for use as fuel by removing certain fractions for use as substitute raw materials for the manufacture of new shingles was also explored. Procedures were developed to prevent asbestos containing materials from being processed at the chipping facilities, and the frequency of the occurrence of asbestos in residential roofing tear-off materials was evaluated. The economic feasibility of each potential use was evaluated based on experience gained during the project and on a review of the well established use of shingle materials in hot mix asphalt. This project demonstrated that chipped asphalt shingle materials can be suitable for use as fuel in circulating fluidized boilers and cement kilns. More experience would be necessary to determine the full benefits that could be derived and to discover long term effects, but no technical barriers to full scale commercial use of chipped asphalt shingle materials in these applications were discovered. While the technical feasibility of various options was demonstrated, only the use of asphalt shingle materials in hot mix asphalt applications is currently viable economically.

Jameson, Rex, PE

2008-04-28T23:59:59.000Z

177

Attic or Roof? An Evaluation of Two Advanced Weatherization Packages  

SciTech Connect (OSTI)

This project examines implementation of advanced retrofit measures in the context of a large-scale weatherization program and the archetypal Chicago brick bungalow. One strategy applies best practice air sealing methods and a standard insulation method to the attic floor. The other strategy creates an unvented roof assembly using materials and methods typically available to weatherization contractors. Through implementations of the retrofit strategies in a total of eight (8) test homes, the research found that the two different strategies achieve similar reductions in air leakage measurement (55%) and predicted energy performance (18%) relative to the pre-retrofit conditions.

Neuhauser, K.

2012-06-01T23:59:59.000Z

178

Evaluation of a Direct Evaporative Roof-Spray Cooling System  

E-Print Network [OSTI]

involved several steps. PVC tubing, with special spray orifices, was mounted on wooden blodts. Solenoid valves were connected to the PVC tubing and then to the controller which activated them. The controller was also connected to a 95 degree F thermo.... The remainder of the thermocouples were used with thermal flux meters to measure the heat flux through the roof. Four thermal flux meters were built by placing a piece of plexiglass (k = 0.1125 Btulh ft F) with a thermo-. couple on each side between two...

Carrasco, A.; Pittard, R.; Kondepudi, S. N.; Somasundaram, S.

1987-01-01T23:59:59.000Z

179

Urban Heat Islands: Cool Roof Infrastructure | Department of Energy  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-Up from theDepartment of Dept. ofUSA RSDepartment of Energy Updated31,Cool Roof

180

Structural Code Considerations for Solar Rooftop Installations.  

SciTech Connect (OSTI)

Residential rooftop solar panel installations are limited in part by the high cost of structural related code requirements for field installation. Permitting solar installations is difficult because there is a belief among residential permitting authorities that typical residential rooftops may be structurally inadequate to support the additional load associated with a photovoltaic (PV) solar installation. Typical engineering methods utilized to calculate stresses on a roof structure involve simplifying assumptions that render a complex non-linear structure to a basic determinate beam. This method of analysis neglects the composite action of the entire roof structure, yielding a conservative analysis based on a rafter or top chord of a truss. Consequently, the analysis can result in an overly conservative structural analysis. A literature review was conducted to gain a better understanding of the conservative nature of the regulations and codes governing residential construction and the associated structural system calculations.

Dwyer, Stephen F.; Dwyer, Brian P.; Sanchez, Alfred

2014-12-01T23:59:59.000Z

Note: This page contains sample records for the topic "daily solar roof" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


181

CAVERN ROOF STABILITY FOR NATURAL GAS STORAGE IN BEDDED SALT  

SciTech Connect (OSTI)

This report documents research performed to develop a new stress-based criterion for predicting the onset of damage in salt formations surrounding natural gas storage caverns. Laboratory tests were conducted to investigate the effects of shear stress, mean stress, pore pressure, temperature, and Lode angle on the strength and creep characteristics of salt. The laboratory test data were used in the development of the new criterion. The laboratory results indicate that the strength of salt strongly depends on the mean stress and Lode angle. The strength of the salt does not appear to be sensitive to temperature. Pore pressure effects were not readily apparent until a significant level of damage was induced and the permeability was increased to allow penetration of the liquid permeant. Utilizing the new criterion, numerical simulations were used to estimate the minimum allowable gas pressure for hypothetical storage caverns located in a bedded salt formation. The simulations performed illustrate the influence that cavern roof span, depth, roof salt thickness, shale thickness, and shale stiffness have on the allowable operating pressure range. Interestingly, comparison of predictions using the new criterion with that of a commonly used criterion indicate that lower minimum gas pressures may be allowed for caverns at shallow depths. However, as cavern depth is increased, less conservative estimates for minimum gas pressure were determined by the new criterion.

Kerry L. DeVries; Kirby D. Mellegard; Gary D. Callahan; William M. Goodman

2005-06-01T23:59:59.000Z

182

Digging the New York City Skyline: Soil Fungal Communities in Green Roofs and City Parks  

E-Print Network [OSTI]

microbes across the greater New York City area is locally variable. Green roof fungal communities wereDigging the New York City Skyline: Soil Fungal Communities in Green Roofs and City Parks Krista L a number of benefits, including decreased urban heat island effects and reduced energy costs for buildings

Fierer, Noah

183

Studies of Photovoltaic Roofing Systems at Wind Engineering and Fluids Laboratory at Colorado State University  

E-Print Network [OSTI]

Studies of Photovoltaic Roofing Systems at Wind Engineering and Fluids Laboratory at Colorado State for Testing of Models of Photovoltaic Roofing Systems, at Wind Engineering and Fluids Laboratory, Colorado issues considered in this process. Over several decades, researchers affiliated with Wind Engineering

184

GREEN ROOFS -A BMP FOR URBAN STORMWATER QUALITY? Brett V. Long1  

E-Print Network [OSTI]

GREEN ROOFS - A BMP FOR URBAN STORMWATER QUALITY? Brett V. Long1 , A.M.ASCE, Shirley E. Clark2 , M: khb4@psu.edu ABSTRACT The focus of this research is the impact of green roofs on urban stormwater a mix that produced the "best" overall reduction in pollutants from simulated rainwater. Because

Clark, Shirley E.

185

A guidebook for insulated low-slope roof systems. IEA Annex 19, Low-slope roof systems: International Energy Agency Energy Conservation in Buildings and Community Systems Programme  

SciTech Connect (OSTI)

Low-slope roof systems are common on commercial and industrial buildings and, to a lesser extent, on residential buildings. Although insulating materials have nearly always been a component of low-slope roofs, the amount of insulation used has increased in the past two decades because of escalation of heating and cooling costs and increased awareness of the need for energy conservation. As the amount of insulation has increased, the demand has intensified for design, installation, and maintenance information specifically for well-insulated roofs. Existing practices for design, installation, and maintenance of insulated roofs have evolved from experience. Typically, these practices feature compromises due to the different properties of materials making up a given roof system. Therefore, they should be examined from time to time to ensure that they are appropriate as new materials continue to enter the market and as the data base on existing systems expands. A primary purpose of this International Energy Agency (IEA) study is to assess current roofing insulation practices in the context of an accumulating data base on performance.

Not Available

1994-02-01T23:59:59.000Z

186

Evolution of cool-roof standards in the United States  

E-Print Network [OSTI]

Solar Energy Center; Howard Wiig, State of Hawaii; and Charles Eley, Architectural Energy Corporation for clarifying building codes.

Akbari, Hashem

2008-01-01T23:59:59.000Z

187

Unravelling daily human mobility motifs  

E-Print Network [OSTI]

Human mobility is differentiated by time scales. While the mechanism for long time scales has been studied, the underlying mechanism on the daily scale is still unrevealed. Here, we uncover the mechanism responsible for ...

Schneider, Christian M.

188

Quantifying air pollution removal by green roofs in Chicago Jun Yang a,c,*, Qian Yu b  

E-Print Network [OSTI]

Quantifying air pollution removal by green roofs in Chicago Jun Yang a,c,*, Qian Yu b , Peng Gong c t The level of air pollution removal by green roofs in Chicago was quantified using a dry deposition model. The result showed that a total of 1675 kg of air pollutants was removed by 19.8 ha of green roofs in one year

Yu, Qian

189

Passive solar construction handbook  

SciTech Connect (OSTI)

Many of the basic elements of passive solar design are reviewed. The unique design constraints presented in passive homes are introduced and many of the salient issues influencing design decisions are described briefly. Passive solar construction is described for each passive system type: direct gain, thermal storage wall, attached sunspace, thermal storage roof, and convective loop. For each system type, important design and construction issues are discussed and case studies illustrating designed and built examples of the system type are presented. Construction details are given and construction and thermal performance information is given for the materials used in collector components, storage components, and control components. Included are glazing materials, framing systems, caulking and sealants, concrete masonry, concrete, brick, shading, reflectors, and insulators. The Load Collector Ratio method for estimating passive system performance is appended, and other analysis methods are briefly summarized. (LEW)

Levy, E.; Evans, D.; Gardstein, C.

1981-08-01T23:59:59.000Z

190

Application of Spray Foam Insulation Under Plywood and Oriented Strand Board Roof Sheathing  

SciTech Connect (OSTI)

Unvented roof strategies with open cell and closed cell spray polyurethane foam insulation sprayed to the underside of roof sheathing have been used since the mid-1990's to provide durable and efficient building enclosures. However, there have been isolated moisture related incidents reported anecdotally that raise potential concerns about the overall hygrothermal performance of these systems. The incidents related to rainwater leakage and condensation concerns. Condensation concerns have been extensively studied by others and are not further discussed in this report. This project involved hygrothermal modeling of a range of rainwater leakage and field evaluations of in-service residential roofs using spray foam insulation. All of the roof assemblies modeled exhibited drying capacity to handle minor rainwater leakage. All field evaluation locations of in-service residential roofs had moisture contents well within the safe range for wood-based sheathing. Explorations of eleven in-service roof systems were completed. The exploration involved taking a sample of spray foam from the underside of the roof sheathing, exposing the sheathing, then taking a moisture content reading. All locations had moisture contents well within the safe range for wood-based sheathing. One full-roof failure was reviewed, as an industry partner was involved with replacing structurally failed roof sheathing. In this case the manufacturer's investigation report concluded that the spray foam was installed on wet OSB based on the observation that the spray foam did not adhere well to the substrate and the pore structure of the closed cell spray foam at the ccSPF/OSB interface was indicative of a wet substrate.

Grin, A.; Smegal, J.; Lstiburek, J.

2013-10-01T23:59:59.000Z

191

Uncertainty analysis and validation of the estimation of effective hydraulic properties: application to green roof  

E-Print Network [OSTI]

of the hydraulic properties of each component of the GRS, namely bark compost and pozzolan, were ob- tained comparisons with conventional roofs. For that purpose13 they developped an energy balance model adapated to GR

Paris-Sud XI, Université de

192

INSTALLATION CERTIFICATE CF-6R-ENV-01 Envelope Insulation; Roofing; Fenestration (Page 1 of 3)  

E-Print Network [OSTI]

INSTALLATION CERTIFICATE CF-6R-ENV-01 Envelope ­ Insulation; Roofing; Fenestration (Page 1 of 3:__________________________________ Brand Name:_______________________________ Thickness (inches):_________________________ Thermal:_______________________________ Thickness (inches):_________________________ Thermal Resistance (R-Value):_________________ Perimeter

193

Reduced Energy and Maintenance Costs Using Polyurethane as a Replacement Roof System  

E-Print Network [OSTI]

&M System Facilities Planning Department modified the specifications developed by the Physical Plant for use in new construction. In the retrofit system, the urethane foam was applied to the existing roof system, which added to any pre...

Scott, G. D.

194

Improving the System Life of Basic Oxygen and Electric Arc Furnace Hoods, Roofs, and Side Vents  

Broader source: Energy.gov [DOE]

This factsheet describes the benefits of a high-performance aluminum bronze alloy to basic oxygen furnace and electric arc furnace components such as hoods, roofs, and side vents.

195

Sustainable Roofscapes: Developing a green roof implementation model for Tucson, AZ  

E-Print Network [OSTI]

Sustainable Roofscapes: Developing a green roof implementation model for Tucson, AZ BRENT JACOBSEN Advisor: Dr. Margaret Livingston School of Landscape Architecture and Planning College of Architecture and Landscape Architecture Special Acknowledgements: The University of Arizona, Technology and Research

Fay, Noah

196

Boston solar retrofits: studies of solar access and economics  

SciTech Connect (OSTI)

Studies of solar access and solar retrofit economics are described for residential applications in the City of Boston. The study of solar access was based upon a random sample of 94 buildings; the sample was stratified to ensure a broad geographic representation from the city's various sections. Using available data on the heights and orientations of the sampled structures and surrounding buildings, each building's hourly access to sunlight was computed separately for the roof and south facing walls. These data were then aggregated by broad structural classifications in order to provide general measures of solar access. The second study was a comparative analysis of the economics of several solar heating and hot water systems. An active hot water system, installed using pre-assembled, commercially purchased equipment, was selected as a reference technology. A variety of measures of economic performance were computed for this system, with and without existing tax credits and under various financing arrangements. Next, a number of alternative approaches for solar space and water heating were identified from interviews with individuals and groups involved in solar retrofit projects in the Boston area. The objective was to identify approaches that many of those interviewed believe to be low-cost means of applying solar energy in residential settings. The approaches selected include thermal window covers, wall collectors, bread box water heaters, and sun spaces. Preliminary estimates of the performance of several representative designs were developed and the economics of these designs evaluated.

Shapiro, M.

1980-11-01T23:59:59.000Z

197

Green Roof Water Harvesting and Recycling Effects on Soil and Water Chemistry and Plant Physiology  

E-Print Network [OSTI]

lost must eventually be replaced, leading to increased maintenance costs. A growing medium that holds its structure and does not lose much organic matter through time is desirable. Media loss should be minimized to keep runoff pollution from the roof... to a minimum (Aitkenhead-Peterson et al. 2011a; Gregoire and Clausen 2011). Sediments that leave a green roof can contain pollutants and nutrients along with it thereby adding to the nutrient and pollutant load (U.S.EPA 2011). Plant species...

Laminack, Kirk Dickison

2014-04-17T23:59:59.000Z

198

The case for cool roofs Ronnen Levinson, Lawrence Berkeley National Laboratory, RMLevinson@LBL.gov  

E-Print Network [OSTI]

typical of roofing, a national cool roof campaign could save 5.7 quad of net primary energy with a present value of $33B. Net energy conservation could reduce CO2 emissions by 0.25 Gt, and global cooling would years save 3.0 quad of net primary energy with a present value of $15.5B, at little to no extra cost

199

Soiling losses for solar photovoltaic systems in California  

E-Print Network [OSTI]

n efficiency and daily rainfall for a 554 kW dc PV plant inPV sites demonstrated how soiling decreases the efficiency of solar PV plants.

Mejia, Felipe A; Kleissl, Jan

2013-01-01T23:59:59.000Z

200

Metal roofing Shingle roofing  

E-Print Network [OSTI]

. Old attics act almost like a pressure cookers. They absorb thermal energy all day long and get hotter

Hutcheon, James M.

Note: This page contains sample records for the topic "daily solar roof" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


201

Condition Assessment Survey (CAS) Program. Deficiency standards and inspections methods manual: Volume 5, 0.05 Roofing  

SciTech Connect (OSTI)

General information is presented for asset determinant factor/CAS repair codes/CAS cost factors; guide sheet tool & material listing; testing methods; inspection frequency; standard system design life tables; and system work breakdown structure. Deficiency standards and inspection methods are presented for built-up membrane; single- ply membrane; metal roofing systems; coated foam membrane; shingles; tiles; parapets; roof drainage system; roof specialties; and skylights.

Not Available

1993-05-01T23:59:59.000Z

202

Stand Persistence of `prestige' Buffalograss (Bouteloua Dactyloides) [Synonym Buchloe Dactyloides] Grown Under Simulated Green Roof Conditions During Summer in Oklahoma.  

E-Print Network [OSTI]

??The purpose of this research was to test the stand persistence of Prestige Buffalograss green roofs under simulated greenhouse conditions using average temperature conditions for… (more)

Beitz, Mary Kathryn

2011-01-01T23:59:59.000Z

203

Building America Webinar: High-Performance Enclosure Strategies, Part I: Unvented Roof Systems and Innovative Advanced Framing Strategies  

Broader source: Energy.gov [DOE]

This presentation was delivered at the February 12, 2015, Building America webinar, High-Performance Enclosure Strategies, Part I: Unvented Roof Systems and Innovative Advanced Framing Strategies.

204

Design Principles and Case Study Analysis for Low Impact Development Practices - Green Roofs, Rainwater Harvesting and Vegetated Swales.  

E-Print Network [OSTI]

??This thesis on Low Impact Development (LID) Practices provides design guidelines and principles for three important LID practices: green roofs, rainwater harvesting and bioswales. The… (more)

Ramesh, Shalini

2011-01-01T23:59:59.000Z

205

Building American Webinar: High-Performance Enclosure Strategies, Part I: Unvented Roof Systems and Innovative Advanced Framing Strategies  

Broader source: Energy.gov [DOE]

This webinar, held on February 12, 2015, focused on methods to design and build roof and wall systems for high performance homes that optimize energy and moisture performance.

206

Developing hourly weather data for locations having only daily weather data  

SciTech Connect (OSTI)

A methodology was developed to modify an hourly TMY weather tape to be representative of a location for which only average daily weather parameters were avilable. Typical hourly and daily variations in solar flux, and other parameters, were needed to properly exercise a computer model to predict the transient performance of a solar controlled greenhouse being designed for Riyadh, Saudi Arabia. The starting point was a TMY tape for Yuma, Arizona, since the design temperatures for summer and winter are nearly identical for Yuma and Riyadh. After comparing six of the most important weather variables, the hourly values on the Yuma tape were individually adjusted to give the same overall daily average conditions as existed in the long-term Riyadh data. Finally, a statistical analysis was used to confirm quantitatively that the daily variations between the long term average values for Riyadh and the modified TMY weather tape for Yuma matched satisfactorily.

Talbert, S.G.; Herold, K.E.; Jakob, F.E.; Lundstrom, D.K.

1983-06-01T23:59:59.000Z

207

Radical Thinkers Needed to Help Get a Solar Panel on Every Roof  

Broader source: Energy.gov [DOE]

We have approximately $7 million waiting to fund the next big, innovative idea through the SunShot Incubator Program for Soft Cost Reduction. But you have to hurry. The deadline for concept papers is January 16, 2012.

208

Impact of Solar PV Laminate Membrane Systems on Roofs | Department of  

Broader source: Energy.gov (indexed) [DOE]

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr May Jun Jul(Summary) "ofEarly Career Scientists'Montana.ProgramJulietipDepartment of Energy MediaRequirements ofPaulThe An

209

Indirect Benefits (Increased Roof Life and HVAC Savings) from a Solar PV  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE:YearRound-UpHeatMulti-Dimensionalthe U.S.Indiana College Provides Training for GreenSystem at the

210

Application of Spray Foam Insulation Under Plywood and OSB Roof Sheathing (Fact Sheet)  

SciTech Connect (OSTI)

Spray polyurethane foams (SPFs) have advantages over alternative insulation methods because they provide air sealing in complex assemblies, particularly roofs. Spray foam can provide the thermal, air, and vapor control layers in both new and retrofit construction. Unvented roof strategies with open cell and closed cell SPF insulation sprayed to the underside of roof sheathing have been used since the mid-1990s to provide durable and efficient building enclosures. However, there have been isolated incidents of failures (either sheathing rot or SPF delamination) that raise some general concerns about the hygrothermal performance and durability of these systems. The primary risks for roof systems are rainwater leaks, condensation from diffusion and air leakage, and built-in construction moisture. This project directly investigated rain and indirectly investigated built-in construction moisture and vapor drives. Research involved both hygrothermal modeling of a range of rain water leakage scenarios and field evaluations of in-service residential roofs. Other variables considered were climate zone, orientation, interior relative humidity, and the vapor permeance of the coating applied to the interior face of open cell SPF.

Not Available

2013-11-01T23:59:59.000Z

211

Quantitative Analysis of Solar Technologies For Net-Zero Design Affordable Homes Research Group, School of Architecture, McGill University  

E-Print Network [OSTI]

Cost per Watt (U.S.) Mono-crystalline - thick modular panels on roof, walls or separate structure 17Quantitative Analysis of Solar Technologies For Net-Zero Design Affordable Homes Research Group PRINCIPLES & RESULTS CONCLUSIONS Photovoltaic (PV) Energy Production Water-Based Solar Thermal Collectors Air

Barthelat, Francois

212

Port of Galveston Solar Energy Project  

SciTech Connect (OSTI)

This study on the performance characteristics of existing solar technologies in a maritime environment was funded by an award given to The Port of Galveston (POG) from the U.S. Department of Energy (DOE). The study includes research performed by The Center for Advanced Materials at the University of Houston (UH). The UH researchers examined how solar cell efficiencies and life spans can be improved by examining the performance of a variety of antireflective (AR) coatings mounted on the top of one of the POG’s Cruise Terminals. Supplemental supporting research was performed at the UH laboratories. An educational Kiosk was constructed with a 55” display screen providing information about solar energy, the research work UH performed at POG and real time data from the solar panels located on the roof of the Cruise Terminal. The Houston Advanced Research Center (HARC) managed the project.

Falcioni, Diane [Project Director, Port of Galveston; Cuclis, Alex [Project Manager, Houston Advanced Research Center; Freundlich, Alex [Principal Investigator, University of Houston

2014-03-31T23:59:59.000Z

213

Solar photovoltaic residence in Carlisle, Massachusetts  

SciTech Connect (OSTI)

The first solar photovoltaic house designed and constructed under the US Department of Energy's Solar Photovoltaic Residential Project has been completed. The house, which is powered by a 7-kWp PV system, will be used to assess the occupants' acceptance of and reactions to residential photovoltaic systems and to familiarize utilities, builders, developers, town building officials and others with issues concerning photovoltaic installations. The house is located on a two-acre lot in Carlisle, approximately twenty miles northwest of Boston. Built by a local architect/developer team, the house includes energy conservation and passive solar features. It utilizes a roof-mounted, flat-plate PV array which operates in a two-way energy exchange mode with the electric utility. The energy conservation and passive solar features of this house are described and a detailed description of the utility-interactive photovoltaic system is presented, along with initial performance data.

Strong, S. J.; Nichols, B. E.

1981-01-01T23:59:59.000Z

214

In situ thermal performance of APP modified bitumen roof membranes coated with reflective coatings  

SciTech Connect (OSTI)

A multi-faceted field research program regarding seven atactic polypropylene (APP) modified bitumen membrane roof systems and four reflective coatings began in 1991. This long-term project is evaluating the performance of various APP modified bitumen membranes (both coated and uncoated), the comparative performance of coating application soon after membrane installation versus preweathering, coating performance, and aspects of recoating. This paper is a progress report on the in situ thermal performance of the various types of coatings compared to the thermal performance of the exposed membrane. The thermal performance of an adjacent ballasted ethylene propylene diene terpolymer (EPDM) roofing system is also described.

Carlson, J.D.; Smith, T.L. (National Roofing Contractors Association, Rosemont, IL (United States)); Christian, J.E. (Oak Ridge National Lab., TN (United States))

1992-01-01T23:59:59.000Z

215

In situ thermal performance of APP modified bitumen roof membranes coated with reflective coatings  

SciTech Connect (OSTI)

A multi-faceted field research program regarding seven atactic polypropylene (APP) modified bitumen membrane roof systems and four reflective coatings began in 1991. This long-term project is evaluating the performance of various APP modified bitumen membranes (both coated and uncoated), the comparative performance of coating application soon after membrane installation versus preweathering, coating performance, and aspects of recoating. This paper is a progress report on the in situ thermal performance of the various types of coatings compared to the thermal performance of the exposed membrane. The thermal performance of an adjacent ballasted ethylene propylene diene terpolymer (EPDM) roofing system is also described.

Carlson, J.D.; Smith, T.L. [National Roofing Contractors Association, Rosemont, IL (United States); Christian, J.E. [Oak Ridge National Lab., TN (United States)

1992-10-01T23:59:59.000Z

216

A new method for modelling roofing materials emissions on the city scale: Application for zinc in the city of Crteil  

E-Print Network [OSTI]

as an important source of environmental pollution. Roofing materials, in particular the metallic ones, are considered as a major source of urban runoff metal contaminations. In the context of the European Water Directive (2000/60 CE), an accurate evaluation of contaminant flows from roofs is thus required on the city

Boyer, Edmond

217

Instability leading to coal bumps and nonlinear evolutionary mechanisms for a coal-pillar-and-roof system  

E-Print Network [OSTI]

Instability leading to coal bumps and nonlinear evolutionary mechanisms for a coal mechanisms of the mechanical system that is composed of the stiff hosts (roof and floor) and the coal pillar using catastrophe theory. It is assumed that the roof is an elastic beam and the coal pillar is a strain

Jiao, Jiu Jimmy

218

For more information about North Carolina Solar Center programs, go to www.ncsc.ncsu.edu  

E-Print Network [OSTI]

Thermal Solar thermal technologies use the sun's power to heat air or water. We use hot water in our homes, no mechanisms are used except for the sun's rays. This is useful to heat air for our homes or cooking. For our absorbing surface with a pump to move liquids or air through it. These collectors are placed on roofs where

219

Countries Commit to White Roofs, Potentially Offsetting the Emissions of Over 300 Power Plants  

Broader source: Energy.gov [DOE]

India, Mexico, and the United States have signed up to join the Cool Roofs Working Group, which was announced yesterday in Abu Dhabi at the second Clean Energy Ministerial -- a high-level global forum to promote policies and programs that advance clean energy technology, to share lessons learned and best practices and to encourage the transition to a global clean energy economy.

220

Rainwater harvesting system with roof catchment, gutter, downspout, storage and drip irrigation system.  

E-Print Network [OSTI]

and without access to municipal water may collect and store rainwater after obtaining a permit from the state) Basics of rainwater collection, calculation of: needs, collection and storage 2) Outdoor use 3) IndoorRainwater harvesting system with roof catchment, gutter, downspout, storage and drip irrigation

Stephens, Graeme L.

Note: This page contains sample records for the topic "daily solar roof" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


221

HEAT TRANSFERS IN A DOUBLE SKIN ROOF VENTILATED BY NATURAL CONVECTION IN SUMMER TIME  

E-Print Network [OSTI]

1 HEAT TRANSFERS IN A DOUBLE SKIN ROOF VENTILATED BY NATURAL CONVECTION IN SUMMER TIME P. H or in tropical and arid countries. In this work, radiation, convection and conduction heat transfers-dimensional numerical simulation of the heat transfers through the double skin reveals the most important parameters

Boyer, Edmond

222

Effect of roof slope and thickness on the performance of a saltstone vault  

SciTech Connect (OSTI)

At the Savannah River Site, low-level radioactive decontaminated salt solution is mixed with slag, flyash, and cement to form a grout-like material called ``Saltstone.`` The Saltstone is poured into concrete vaults constructed at the Saltstone Disposal Facility (SDF). The SDF is designed for the release of contaminants in a slow, controlled manner over thousands of years. The impact of SDF on groundwater has been studied in a radiological performance assessment (PA). Groundwater models were used to predict the fluid flow and contaminant transport at SDF. The models predicted a spatial contaminant concentration distribution in groundwater as a function of time. This study focuses on the roof configuration of Saltstone vault, with special interests in cost-effectiveness. We conducted a study to evaluate the effect of roof slope and thickness on the performance of a Saltstone vault. Four roof configurations were simulated. The tool used for the simulation was ECLIPSE, a finite-difference petroleum reservoir engineering code with an environmental tracer option. Nitrate was used as the ``tracer`` contaminant. In this study, ECLIPSE solves the two-phase two-dimensional flow and transport problem up to 10,000 years. This paper describes a modeling study used to evaluate roof design options for the Saltstone vault.

Yu, A.D.; Lam, Poh-Sang; Hsu, R.H.

1995-09-01T23:59:59.000Z

223

Ten Years at the Calif. Energy Commission White Roofs to Cool your Building, your City and  

E-Print Network [OSTI]

Ten Years at the Calif. Energy Commission & White Roofs to Cool your Building, your City and (this" 32" 37" 42" 50" CEC Max Screen Area (1400 in2 or ~57.4 diagonal inches) Energy Star 3.0 TVs (10 is new !) Cool the World Arthur H. Rosenfeld, Former Commissioner California Energy Commission

Kammen, Daniel M.

224

Energy Assurance Daily (EAD): July 2012  

Broader source: Energy.gov [DOE]

Energy Assurance Daily provides a summary of public information concerning current energy issues. Published Monday through Friday to inform stakeholders of developments affecting energy systems,...

225

Energy Assurance Daily (EAD): April 2012  

Broader source: Energy.gov [DOE]

Energy Assurance Daily provides a summary of public information concerning current energy issues. Published Monday through Friday to inform stakeholders of developments affecting energy systems,...

226

Energy Assurance Daily (EAD): June 2012  

Broader source: Energy.gov [DOE]

Energy Assurance Daily provides a summary of public information concerning current energy issues. Published Monday through Friday to inform stakeholders of developments affecting energy systems,...

227

Solar Rights  

Broader source: Energy.gov [DOE]

In June 2010, Louisiana enacted solar rights legislation (HB 751) that prohibits certain entities from unreasonably restricting a property owner from installing a solar collector. Solar collectors...

228

Estimating solar access of typical residential rooftops: A case study in San Jose, CA  

SciTech Connect (OSTI)

Shadows cast by trees and buildings can limit the solar access of rooftop solar-energy systems, including photovoltaic panels and thermal collectors. This study characterizes rooftop shading in a residential neighborhood of San Jose, CA, one of four regions analyzed in a wider study of the solar access of California homes.High-resolution orthophotos and LiDAR (Light Detection And Ranging) measurements of surface height were used to create a digital elevation model of all trees and buildings in a 4 km2 residential neighborhood. Hourly shading of roofing planes (the flat elements of roofs) was computed geometrically from the digital elevation model. Parcel boundaries were used to determine the extent to which roofing planes were shaded by trees and buildings in neighboring parcels.In the year in which surface heights were measured (2005), shadows from all sources ("total shading") reduced the insolation received by S-, SW-, and W-facing residential roofing planes in the study area by 13 - 16percent. Shadows cast by trees and buildings in neighboring parcels reduced insolation by no more than 2percent. After 30 years of simulated maximal tree growth, annual total shading increased to 19 - 22percent, and annual extraparcel shading increased to 3 - 4percent.

Levinson, Ronnen M.; Gupta, Smita; Akbari, Hashem; Pomerantz, Melvin

2008-03-03T23:59:59.000Z

229

Cool Colored Roofs to Save Energy and Improve Air Quality  

SciTech Connect (OSTI)

Urban areas tend to have higher air temperatures than their rural surroundings as a result of gradual surface modifications that include replacing the natural vegetation with buildings and roads. The term ''Urban Heat Island'' describes this phenomenon. The surfaces of buildings and pavements absorb solar radiation and become extremely hot, which in turn warm the surrounding air. Cities that have been ''paved over'' do not receive the benefit of the natural cooling effect of vegetation. As the air temperature rises, so does the demand for air-conditioning (a/c). This leads to higher emissions from power plants, as well as increased smog formation as a result of warmer temperatures. In the United States, we have found that this increase in air temperature is responsible for 5-10% of urban peak electric demand for a/c use, and as much as 20% of population-weighted smog concentrations in urban areas. Simple ways to cool the cities are the use of reflective surfaces (rooftops and pavements) and planting of urban vegetation. On a large scale, the evapotranspiration from vegetation and increased reflection of incoming solar radiation by reflective surfaces will cool a community a few degrees in the summer. As an example, computer simulations for Los Angeles, CA show that resurfacing about two-third of the pavements and rooftops with reflective surfaces and planting three trees per house can cool down LA by an average of 2-3K. This reduction in air temperature will reduce urban smog exposure in the LA basin by roughly the same amount as removing the basin entire onroad vehicle exhaust. Heat island mitigation is an effective air pollution control strategy, more than paying for itself in cooling energy cost savings. We estimate that the cooling energy savings in U.S. from cool surfaces and shade trees, when fully implemented, is about $5 billion per year (about $100 per air-conditioned house).

Akbari, Hashem; Levinson, Ronnen; Miller, William; Berdahl, Paul

2005-08-23T23:59:59.000Z

230

Bonded Bracket Assmebly for Frameless Solar Panels  

SciTech Connect (OSTI)

In February 2011 the US Department of Energy announced their new Sunshot Initiative. The Sunshot goal is to reduce the total cost of solar energy systems by about 75 percent before the end of the decade. The DOE estimated that a total installed cost of $1 per watt for photovoltaic systems would be equivalent to 6���¢/kilowatt hour (kWh) for energy available from the grid. The DOE also estimated that to meet the $1 per watt goal, PV module costs would need to be reduced to $.50 per watt, balance of systems costs would need to be reduced to $.40 per watt, and power electronic costs would need to reach $.10 per watt. To address the BOS balance of systems cost component of the $1 per watt goal, the DOE announced a funding opportunity called (BOS-X) Extreme Balance of System Hardware Cost Reductions. The DOE identified eight areas within the total BOS costs: 1) installation labor, 2) installation materials, 3) installation overhead and profit, 4) tracker, 5) permitting and commissioning, 6) site preparation, 7) land acquisition, 8) sales tax. The BOS-X funding announcement requested applications in four specific topics: Topic 1: Transformational Building Integrated Photovoltaic (BIPV) Modules Topic 2: Roof and Ground Mount Innovations Topic 3: Transformational Photovoltaic System Designs Topic 4: Development of New Wind Load Codes for PV Systems The application submitted by ARaymond Tinnerman reflected the requirements listed in Topic #2, Roof and Ground Mount Innovations. The goal of topic #2 was to develop technologies that would result in the extreme reduction of material and labor costs associated with applications that require physical connections and attachments to roof and ground mount structures. The topics researched in this project included component cost reduction, labor reduction, weight reduction, wiring innovations, and alternative material utilization. The project objectives included: 1) The development of an innovative quick snap bracket assembly that would be bonded to frameless PV modules for commercial rooftop installations. 2) The development of a composite pultruded rail to replace traditional racking materials. 3) In partnership with a roofing company, pilot the certification of a commercial roof to be solar panel compliant, eliminating the need for structural analysis and government oversight resulting in significantly decreased permitting costs. 4) Reduce the sum of all cost impacts in topic #2 from a baseline total of $2.05/watt to $.34/watt.

Murray, Todd

2013-01-30T23:59:59.000Z

231

Solar and Photovoltaic Data from the University of Oregon Solar Radiation Monitoring Laboratory (UO SRML)  

DOE Data Explorer [Office of Scientific and Technical Information (OSTI)]

The UO SRML is a regional solar radiation data center whose goal is to provide sound solar resource data for planning, design, deployment, and operation of solar electric facilities in the Pacific Northwest. The laboratory has been in operation since 1975. Solar data includes solar resource maps, cumulative summary data, daily totals, monthly averages, single element profile data, parsed TMY2 data, and select multifilter radiometer data. A data plotting program and other software tools are also provided. Shade analysis information and contour plots showing the effect of tilt and orientation on annual solar electric system perfomance make up a large part of the photovoltaics data.(Specialized Interface)

232

An Overview of Solar Cell Technology Mike McGehee  

E-Print Network [OSTI]

An Overview of Solar Cell Technology Mike McGehee Materials Science and Engineering Global ClimateWatt and Evergreen Solar went bankrupt Jon Stewart, The Daily Show Solyndra, SpectraWatt and Evergreen Solar went provide 20 % of that. It takes a panel rated at 5 W, to average 1 W of power through the day and year, sog

McGehee, Michael

233

Innovative gas energy systems for use with passive solar residences  

SciTech Connect (OSTI)

The GRI asked Booz, Allen, and Hamilton to analyze the integration of passive solar with gas-fired energy systems for heating and cooling homes. Direct gain, trombe wall, thermosiphon and thermal roof storage heating systems were studied. Solar load control, evaporative cooling, earth coupling, and night radiation cooling systems were investigated. The drawbacks of conventional gas backup systems are discussed. Innovative passive/gas combinations are recommended. These include multizone gas furnace, decentralized gas space heater, gas desiccant dehumidifier, and gas dehumidifier for basement drying. The multizone furnace saves $1500, and is recommended for Pilot Version development.

Hartman, D.; Kosar, D.

1983-06-01T23:59:59.000Z

234

List of Solar Energy Incentives | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision hasInformation Earth's Heat JumpInc Place:KeystoneSolarList ofPassive SolarRoofs IncentivesList of

235

List of Solar Pool Heating Incentives | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision hasInformation Earth's Heat JumpInc Place:KeystoneSolarList ofPassive SolarRoofs IncentivesList

236

List of Solar Space Heat Incentives | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision hasInformation Earth's Heat JumpInc Place:KeystoneSolarList ofPassive SolarRoofs IncentivesListHeat

237

List of Solar Thermal Electric Incentives | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision hasInformation Earth's Heat JumpInc Place:KeystoneSolarList ofPassive SolarRoofs

238

List of Solar Thermal Process Heat Incentives | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision hasInformation Earth's Heat JumpInc Place:KeystoneSolarList ofPassive SolarRoofsIncentives Jump to:

239

List of Solar Water Heat Incentives | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home5b9fcbce19 No revision hasInformation Earth's Heat JumpInc Place:KeystoneSolarList ofPassive SolarRoofsIncentives Jump

240

Research on the Effect of a Planting Roof on the Thermal Load of a Business Building  

E-Print Network [OSTI]

ICEBO2006, Shenzhen, China Enve lope Technologies for Building Energy Efficiency Vol.II-4-2 Research on the Effect of a Planting Roof on the Thermal Load of a Business Building Weijie Zhang Jinshun Wu Yiran Wei Xudong Gao... ICEBO2006, Shenzhen, China Enve lope Technologies for Building Energy Efficiency Vol.II-4-2 room has been made and some theoretical relations between outdoor air temperature and indoor thermal load within certain region have been...

Zhang, W.; Wu, J.; Wei, Y.; Gao, X.

2006-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "daily solar roof" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


241

Roof and Attic Design Guidelines for new and retrofit Construction of Homes in Hot and Coild Climates  

SciTech Connect (OSTI)

Some guidelines for improving the energy efficiency of roofs and attics are presented and are based on the research of the DOE Building Technology. The results of combined analytical and experimental studies were used to benchmark computer tools, which in turn, were used to simulate homes in hot and cold climates. Adding floor and roof insulation, above deck ventilation, radiant barriers, cool color shingle, metal or tile roofs, sealing the attic floor, sealing the duct system and sealing the attic were simulated to compute the cost of energy savings. Results are prioritized to help building owners make an informed economic decision when contemplating roof and attic retrofits. Sealing the attic floor is a top retrofit option. The sealed attic approach and a new prototype roof assembly an insulated and ventilated roof are good options for retrofit work but have paybacks ranging from 15 to 25 years. A new sealed attic concept was simulated and computations show its simple payback is about 10 to 12 years in hot and cold climates; its first cost is significantly reduced from that of a spray foam approach. For new construction the best option is to keep the ducts out of the attic, make sure the attic floor is sealed and add at least code level of insulation to the ceiling.

Desjarlais, Andre Omer [ORNL] [ORNL; LaFrance, Marc [International Energy Agency] [International Energy Agency

2013-01-01T23:59:59.000Z

242

Internal absorber solar collector  

DOE Patents [OSTI]

Thin solar collecting panels are described made from arrays of small rod collectors consisting of a refracting dielectric rod lens with an absorber imbedded within it and a reflecting mirror coated on the back side of the dielectric rod. Non-tracking collector panels on vertical walls or roof tops receive approximately 90% of solar radiation within an acceptance zone 60.degree. in elevation angle by 120.degree. or more in the azimuth sectors with a collector concentration ratio of approximately 3.0. Miniaturized construction of the circular dielectric rods with internal absorbers reduces the weight per area of glass, plastic and metal used in the collector panels. No external parts or insulation are needed as heat losses are low due to partial vacuum or low conductivity gas surrounding heated portions of the collector. The miniature internal absorbers are generally made of solid copper with black selective surface and the collected solar heat is extracted at the collector ends by thermal conductivity along the absorber rods. Heat is removed from end fittings by use of liquid circulants. Several alternate constructions are provided for simplifying collector panel fabrication and for preventing the thermal expansion and contraction of the heated absorber or circulant tubes from damaging vacuum seals. In a modified version of the internal absorber collector, oil with temperature dependent viscosity is pumped through a segmented absorber which is now composed of closely spaced insulated metal tubes. In this way the circulant is automatically diverted through heated portions of the absorber giving higher collector concentration ratios than theoretically possible for an unsegmented absorber.

Sletten, Carlyle J. (106 Nagog Hill Rd., Acton, MA 01720); Herskovitz, Sheldon B. (88 Hammond St., Acton, MA 01720); Holt, F. S. (46 Emerson Rd., Winchester, MA 01890); Sletten, E. J. (Chestnut Hill Rd. R.F.D. Rte. #4, Amherst, NH 03031)

1981-01-01T23:59:59.000Z

243

Roof system effects on in-situ thermal performance of HCFC polyisocyanurate insulation. [Hydrochlorofluorocarbon (HCFC)  

SciTech Connect (OSTI)

Industry-produced, permeably-faced, experimental polyisocyanurate (PIR) laminated boardstock foamed with several different hydrochlorofluorcarbons (HCFCS) is undergoing in-situ testing at the Building Envelopes Research User Center at Oak Ridge National Laboratory (ORNL). The overall objective of this research is to determine the long term thermal performance differences between PIR foamed with CFC-11 and PIR foamed with HCFC-123, HCFC-14lb and blends of HCFCs. Boards from the same batch were installed in outdoor test facilities and instrumented in part to determine if the insulation thermal performance aging characteristics are dependent on how they are handled and installed in the field. One of the major contributions of this research is the field validation of an accelerated thermal aging procedure. The laboratory measurements of the apparent thermal conductivity (k) of 10-mm-thick slices conducted over a period of less than a year are used to predict the k of 38-50-mm-thick PIR laminated board stock for 12--20 years after production. In situ thermal performance measurements of these well characterized three-year-old boards under white and under black ethylene propylene diene monomer (EPDM) membranes are compared with the accelerated aging procedure and with boards from the same batch in different roofing systems: mechanically attached EPDM, fully adhered EPDM, and built-up roof (BUR). The comparison indicates that this accelerated aging procedure should be seriously considered for providing in-service thermal performance information to building owners and roofing contractors.

Christian, J.E.; Desjarlais, A.O.; Courville, G.; Graves, R.

1992-01-01T23:59:59.000Z

244

Roof system effects on in-situ thermal performance of HCFC polyisocyanurate insulation  

SciTech Connect (OSTI)

Industry-produced, permeably-faced, experimental polyisocyanurate (PIR) laminated boardstock foamed with several different hydrochlorofluorcarbons (HCFCS) is undergoing in-situ testing at the Building Envelopes Research User Center at Oak Ridge National Laboratory (ORNL). The overall objective of this research is to determine the long term thermal performance differences between PIR foamed with CFC-11 and PIR foamed with HCFC-123, HCFC-14lb and blends of HCFCs. Boards from the same batch were installed in outdoor test facilities and instrumented in part to determine if the insulation thermal performance aging characteristics are dependent on how they are handled and installed in the field. One of the major contributions of this research is the field validation of an accelerated thermal aging procedure. The laboratory measurements of the apparent thermal conductivity (k) of 10-mm-thick slices conducted over a period of less than a year are used to predict the k of 38-50-mm-thick PIR laminated board stock for 12--20 years after production. In situ thermal performance measurements of these well characterized three-year-old boards under white and under black ethylene propylene diene monomer (EPDM) membranes are compared with the accelerated aging procedure and with boards from the same batch in different roofing systems: mechanically attached EPDM, fully adhered EPDM, and built-up roof (BUR). The comparison indicates that this accelerated aging procedure should be seriously considered for providing in-service thermal performance information to building owners and roofing contractors.

Christian, J.E.; Desjarlais, A.O.; Courville, G.; Graves, R.

1992-10-01T23:59:59.000Z

245

Solar access of residential rooftops in four California cities  

SciTech Connect (OSTI)

Shadows cast by trees and buildings can limit the solar access of rooftop solar-energy systems, including photovoltaic panels and thermal collectors. This study characterizes residential rooftop shading in Sacramento, San Jose, Los Angeles and San Diego, CA. Our analysis can be used to better estimate power production and/or thermal collection by rooftop solar-energy equipment. It can also be considered when designing programs to plant shade trees. High-resolution orthophotos and LiDAR (Light Detection And Ranging) measurements of surface height were used to create a digital elevation model of all trees and buildings in a well-treed 2.5-4 km{sup 2} residential neighborhood. On-hour shading of roofing planes (the flat elements of roofs) was computed geometrically from the digital elevation model. Values in future years were determined by repeating these calculations after simulating tree growth. Parcel boundaries were used to determine the extent to which roofing planes were shaded by trees and buildings in neighboring parcels. For the subset of S+SW+W-facing planes on which solar equipment is commonly installed for maximum solar access, absolute light loss in spring, summer and fall peaked about two to four hours after sunrise and about two to four hours before sunset. The fraction of annual insolation lost to shading increased from 0.07-0.08 in the year of surface-height measurement to 0.11-0.14 after 30 years of tree growth. Only about 10% of this loss results from shading by trees and buildings in neighboring parcels.

Levinson, Ronnen; Akbari, Hashem; Pomerantz, Melvin

2010-05-14T23:59:59.000Z

246

Insignificant solar-terrestrial triggering of earthquakes Jeffrey J. Love1  

E-Print Network [OSTI]

Insignificant solar-terrestrial triggering of earthquakes Jeffrey J. Love1 and Jeremy N. Thomas2 that solar-terrestrial interaction, as measured by sunspots, solar wind velocity, and geomagnetic activity by the corresponding rank of annual, monthly, and daily averages of the solar-terrestrial variables. We measure

Thomas, Jeremy N.

247

Solar Easements  

Broader source: Energy.gov [DOE]

New Hampshire's "solar skyspace easement" provisions allow property owners to create solar easements in order to create and preserve a right to unobstructed access to solar energy. Easements remain...

248

Solar Easements  

Broader source: Energy.gov [DOE]

Virginia's solar easement law is similar to those in effect in other states. The Virginia Solar Easements Act of 1978 allows property owners to create binding solar easements for the purpose of...

249

Get Daily Energy Analysis Delivered to Your Website | Department...  

Broader source: Energy.gov (indexed) [DOE]

Get Daily Energy Analysis Delivered to Your Website Get Daily Energy Analysis Delivered to Your Website August 8, 2011 - 3:39pm Addthis Get Daily Energy Analysis Delivered to Your...

250

Using Cool Roofs to Reduce Energy Use, Greenhouse Gas Emissions, and Urban Heat-island Effects: Findings from an India Experiment  

E-Print Network [OSTI]

the demand for cooling energy, urban trees indirectly reducesurfaces and shade trees to reduce energy use and improvethe energy savings and GHG benefits of cool roofs and tree

Akbari, Hashem

2011-01-01T23:59:59.000Z

251

Text-Alternative Version of Building America Webinar: High-Performance Enclosure Strategies, Part 1: Unvented Roof Systems and Innovative Advanced Framing Strategies  

Broader source: Energy.gov [DOE]

This webinar, held on February 12, 2015, focused on methods to design and build roof and wall systems for high performance homes that optimize energy and moisture performance.

252

The Daily Duration of Transportation: An Econometric and Sociological Approach  

E-Print Network [OSTI]

The Daily Duration of Transportation: An Econometric and Sociological Approach Karl Littlejohn. 2007Monte Veritŕ / Ascona, September #12;#12;3 The Daily Duration of Transportation: An Econometric

Paris-Sud XI, Université de

253

CALIFORNIA SOLAR DATA MANUAL  

E-Print Network [OSTI]

Estimating Unmeasured Solar Radiation Quantities . . . . . .Appendix C - Appendix 0 - Solar Radiation Glossary. ConversSolar Data a. Solar Radiation. , , . , . . , , , , . , . . .

Berdahl, P.

2010-01-01T23:59:59.000Z

254

Community Shared Solar with Solarize  

Broader source: Energy.gov [DOE]

An overview of the concept behind The Solarize Guidebook, which offers neighborhoods a plan for getting volume discounts when making group purchases of rooftop solar energy systems.

255

2011 Daily Log Report #: 2011-00261  

E-Print Network [OSTI]

2011 Daily Log May 2011 Report #: 2011-00261 Reported: 05/31/2011 1300 Occurred: Same Incident: Medical Emergency Location: University Center Disposition: Report--Closed Comments: Male transported to hospital by ambulance for evaluation and treatment. No Reportable Activity on 05/30/2011 No Reportable

Boyce, Richard L.

256

2009 Daily Log Report #: 2009-00327  

E-Print Network [OSTI]

2009 Daily Log June 2009 Report #: 2009-00327 Reported: 06/30/09 1118 Occurred: Same Incident: Fire/Smoke Alarm Location: Dorm--Kentucky Hall Disposition: Report--Closed Comments: Alarm activation caused by drywall dust from contractors; fire department responded and cleared the scene. No Reportable Activity

Boyce, Richard L.

257

2010 Daily Log Report #: 2010-00221  

E-Print Network [OSTI]

2010 Daily Log April 2010 Report #: 2010-00221 Reported: 04/30/10 1034 Occurred: Same Incident: Found/Recovered Property Location: Founders Hall Disposition: Report--Closed Comments: Small purse was found in classroom. Report #: 2010-00220 Reported: 04/30/10 1347 Occurred: 04/30/10 0820 to 0900

Boyce, Richard L.

258

2011 Daily Log Report #: 2011-00295  

E-Print Network [OSTI]

2011 Daily Log June 2011 Report #: 2011-00295 Reported: 6/30/2011 0813 Occurred: 6/29/2011 1430 Incident: Traffic Crash Location: Sidewalk on Plaza Level Disposition: Report--Closed Comments: Single vehicle accident; no injuries. Report #: 2011-00294 Reported: 06/29/2011 1909 Occurred: Same Incident

Boyce, Richard L.

259

2011 Daily Log Report #: 2011-00317  

E-Print Network [OSTI]

2011 Daily Log July 2011 Report #: 2011-00317 Reported: 07/30/2011 1446 Occurred: 07/30/2011 1435 Incident: Odor Related Complaint Location: Power Plant Disposition: Report--Closed Comments: Subject reported a strange odor emanating from somewhere in the vicinity; fire department responded and cleared

Boyce, Richard L.

260

2010 Daily Log Report #: 2010-00262  

E-Print Network [OSTI]

2010 Daily Log June 2010 Report #: 2010-00262 Reported: 06/30/10 0957 Occurred: 06/24/10 1630 to 0957 Incident: Theft Location: Founders Hall Disposition: Report--Open Comments: Several textbooks stolen from office. No Reportable Activity on 06/29/10 Report #: 2010-00261 Reported: 06/28/10 1720

Boyce, Richard L.

Note: This page contains sample records for the topic "daily solar roof" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


261

2010 Daily Log Report #: 2010-00165  

E-Print Network [OSTI]

2010 Daily Log March 2010 Report #: 2010-00165 Reported: 03/31/10 1525 Occurred: 03/31/10 1520 Incident: Traffic Crash Location: Nunn Drive Disposition: Report--Closed Comments: Two vehicle accident; vehicle towed; no injuries. Report #: 2010-00164 Reported: 03/31/10 1121 Occurred: 03/31/10 0800 to 1100

Boyce, Richard L.

262

2011 Daily Log Report #: 2011-00168  

E-Print Network [OSTI]

2011 Daily Log March 2011 Report #: 2011-00168 Reported: 03/31/2011 1237 Occurred: 03/31/2011 1235 Incident: Medical Emergency Location: Outside of Student Union Disposition: Report--Closed Comments: Female transported to hospital by ambulance for medical treatment. Report #: 2011-00167 Reported: 03/31/2011 1116

Boyce, Richard L.

263

2009 Daily Log Report #: 2009-00202  

E-Print Network [OSTI]

2009 Daily Log March 2009 Report #: 2009-00202 Reported: 03/31/09 2045 Occurred: 03/29/09 1400 to 03/30/09 2000 Incident: Theft Location: Lot Q Disposition: Report--Open Comments: GPS System stolen from unlocked vehicle. Report #: 2009-00201 Reported: 03/31/09 1833 Occurred: Same Incident: Fire

Boyce, Richard L.

264

2009 Daily Log Report #: 2009-00269  

E-Print Network [OSTI]

2009 Daily Log April 2009 Report #: 2009-00269 Reported: 04/30/09 1508 Occurred: Same Incident: Traffic Crash Location: Johns Hill Road and Kenton Drive Disposition: Report--Closed Comments: Two vehicle accident; no injuries. Report #: 2009-00268 Reported: 04/30/09 1049 Occurred: Same Incident: Traffic Crash

Boyce, Richard L.

265

2011 Daily Log Report #: 2011-00229  

E-Print Network [OSTI]

2011 Daily Log April 2011 Report #: 2011-00229 Reported: 04/29/2011 2327 Occurred: 04/29/2011 2325 Incident: Medical Emergency Location: University Center Disposition: Report--Closed Comments: Female transported by ambulance to hospital for medical treatment. Report #: 2011-00228 Reported: 04/29/2011 1702

Boyce, Richard L.

266

Fall 2013 BOSTONIA Last year, the Daily  

E-Print Network [OSTI]

metropolitan area. The website was referring to the people of Boston, of course, not the city itself. But what if the city itself were smart? What if technology, designed by the smart people who work in Boston, could help us save time and energy and spare us from daily frustrations? We talked to some BU researchers who

Spence, Harlan Ernest

267

INVEST IN YOUR BONES Daily Activities  

E-Print Network [OSTI]

INVEST IN YOUR BONES Daily Activities Leaflet 3 Another osteoporosis prevention step to decrease lifestyle. Let's see how you can do that. If you have osteoporosis, follow carefully the activity program. Remember the following about osteoporosis: is largely preventable and treatable is a serious

268

Philadelphia, Pennsylvania: Solar in Action (Brochure), Solar...  

Broader source: Energy.gov (indexed) [DOE]

Philadelphia, Pennsylvania: Solar in Action (Brochure), Solar America Cities, Energy Efficiency & Renewable Energy (EERE) Philadelphia, Pennsylvania: Solar in Action (Brochure),...

269

Daily rhythms in mobile telephone communication  

E-Print Network [OSTI]

Circadian rhythms are known to be important drivers of human activity and the recent availability of electronic records of human behaviour has provided fine-grained data of temporal patterns of activity on a large scale. Further, questionnaire studies have identified important individual differences in circadian rhythms, with people broadly categorised into morning-like or evening-like individuals. However, little is known about the social aspects of these circadian rhythms, or how they vary across individuals. In this study we use a unique 18-month dataset that combines mobile phone calls and questionnaire data to examine individual differences in the daily rhythms of mobile phone activity. We demonstrate clear individual differences in daily patterns of phone calls, and show that these individual differences are persistent despite a high degree of turnover in the individuals' social networks. Further, women's calls were longer than men's calls, especially during the evening and at night, and these calls wer...

Aledavood, Talayeh; Roberts, Sam G B; Reed-Tsochas, Felix; Moro, Esteban; Dunbar, Robin I M; Saramäki, Jari

2015-01-01T23:59:59.000Z

270

Applications are invited for an Environment Canada Science Horizons Youth Internship to be held in the Department of Physics at the University of Toronto. The Intern will be employed as a research assistant to  

E-Print Network [OSTI]

, in downtown Toronto, with a sun-tracker mounted on the roof above. Measurements of infrared solar absorption will involve daily operations and maintenance of the TAO FTS, its sun- tracker, and associated hardware

Strong, Kimberly

271

SOLAR-POWERED AUTONOMOUS UNDERWATER VEHICLE DEVELOPMENT James Jalbert, John Baker, John Duchesney, Paul Pietryka, William Dalton  

E-Print Network [OSTI]

batteries daily using solar panels to convert solar energy to electrical energy. #12;· Operate at depthsSOLAR-POWERED AUTONOMOUS UNDERWATER VEHICLE DEVELOPMENT James Jalbert, John Baker, John Duchesney in such applications. The concept of a vehicle that would allow on-station recharging of batteries, using solar cells

272

Solar Easements  

Broader source: Energy.gov [DOE]

Rhode Island allows property owners to establish solar easements in the same manner and with the same effect as a conveyance of an interest in real property. Solar easements must be created in...

273

Solar Forecasting  

Broader source: Energy.gov [DOE]

On December 7, 2012, DOE announced $8 million to fund two solar projects that are helping utilities and grid operators better forecast when, where, and how much solar power will be produced at U.S....

274

Solar Easements  

Broader source: Energy.gov [DOE]

Kansas' solar easement provisions do not create an automatic right to sunlight. Rather, they allow parties to voluntarily enter into solar easement contracts for the purpose of ensuring adequate...

275

Solar Rights  

Broader source: Energy.gov [DOE]

Cities and counties in North Carolina generally may not adopt ordinances prohibiting the installation of "a solar collector that gathers solar radiation as a substitute for traditional energy for...

276

Airtightness Results of Roof-Only Air Sealing Strategies on 1-1/2 Story Homes in Cold Climates  

SciTech Connect (OSTI)

In this second study on solutions to ice dams in 1-1/2 story homes, five test homes located in both cold and very cold climates were analyzed for air leakage reduction rates following modifications by independent contractors on owner-occupied homes. The reason for choosing this house type was they are very common in our area and very difficult to air seal and insulate effectively. Two projects followed a roof-only Exterior Thermal Moisture Management System (ETMMS) process. One project used an interior-only approach to roof air sealing and insulation. The remaining two projects used a deep energy retrofit approach for whole house (foundation wall, above grade wall, roof) air leakage and heat loss reduction. All were asked to provide information regarding project goals, process, and pre and post-blower door test results. Additional air leakage reduction data was provided by several NorthernSTAR Building America industry partners for interior-applied, roof-only modifications on 1-1/2 story homes. The data represents homes in the general market as well as homes that were part of the state of Minnesota weatherization program. A goal was to compare exterior air sealing methods with interior approaches. This pool of data enabled us to compare air tightness data from over 220 homes using similar air seal methods.

Ojczyk, C.; Murry, T.; Mosiman, G.

2014-07-01T23:59:59.000Z

277

Comparison of Software Models for Energy Savings from Cool Roofs Joshua New, Oak Ridge National Laboratory (United States)  

E-Print Network [OSTI]

Comparison of Software Models for Energy Savings from Cool Roofs Joshua New, Oak Ridge National consolidates comparison of RSC's projected energy savings to other simulation engines including DOE-2.1E, Attic of the Department of Energy's (DOE) Building Technologies Office (BTO). The simulation engine used in the RSC

Tennessee, University of

278

he skies open and water gushes off roofs, down gutters and into drains. Heavy rain quickly overwhelms the drainage  

E-Print Network [OSTI]

T he skies open and water gushes off roofs, down gutters and into drains. Heavy rain quickly risk heavy rain will cause flooding. Even if this isn't possible, water can be held in underground overwhelms the drainage network; before long, water backs up and starts creeping towards buildings. In cities

Brierley, Andrew

279

Project Overcoat - An Exploration of Exterior Insulation Strategies for 1-1/2-Story Roof Applications in Cold Climates  

SciTech Connect (OSTI)

The development of an alternative method to interior-applied insulation strategies or exterior applied 'band-aids' such as heat tapes and ice belts may help reduce energy needs of millions of 1-1/2 story homes while reducing the risk of ice dam formation. A potential strategy for energy improvement of the roof is borrowed from new construction best practices: Here an 'overcoat' of a continuous air, moisture, and thermal barrier is applied on the outside of the roof structure for improved overall performance. The continuous insulation of this approach facilitates a reduction in thermal bridging which could further reduce energy consumption and bring existing homes closer to meeting the Building America goals for energy reduction. Research favors an exterior approach to deep energy retrofits and ice dam prevention in existing homes. The greatest amount of research focuses on whole house deep energy retrofits leaving a void in roof-only applications. The research is also void of data supporting the hygrothermal performance, durability, constructability, and cost of roof-only exterior overcoat strategies. Yet, contractors interviewed for this report indicate an understanding that exterior approaches are most promising for mitigating ice dams and energy loss and are able to sell these strategies to homeowners.

Ojczyk, C.; Mosiman, G.; Huelman, P.; Schirber, T.; Yost, P.; Murry, T.

2013-04-01T23:59:59.000Z

280

Solar hot water system installed at Mobile, Alabama. Final report  

SciTech Connect (OSTI)

This final report describes the solar energy hot water system installed at LaQuinta Motor Inn Inc., at Mobile, Alabama. The building is a 122 unit motel. The system consists of six rows of ten collectors and three rows of eleven collectors (1990 square feet) mounted on the roof. Griswald flow control valves were installed to regulate the flow to each row. Two Heliotrope electronic thermometers with a combined capability of measuring the temperatures of 22 different locations were installed for monitoring purposes. Engineering drawings, component specifications, and operator instructions are included.

None

1980-10-01T23:59:59.000Z

Note: This page contains sample records for the topic "daily solar roof" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


281

Solar thermal powered desalination: membrane versus distillation technologies  

E-Print Network [OSTI]

, in terms of the volume of water produced for the energy consumed. The two most commonly encountered. The daily desalinated water output per square metre of solar collector area is estimated for a number in remediation of dryland salinity, a critical review of the literature on medium to large scale solar driven (or

282

TWP-ICE Daily Synoptic Overview  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security AdministrationcontrollerNanocrystallineForeign ObjectOUR TECHNOLOGIES TECHNOLOGIESCC2JanuaryDaily

283

Comparative laboratory evaluation of resin-grouted roof bolt elements. Report of Investigations/1985  

SciTech Connect (OSTI)

In laboratory testing, the Bureau of Mines established criteria by which common resin-grouted roof-bolting systems can be evaluated and compared. Ultimate strength and stiffness were determined for nontensioned full-column, point-anchor, tensioned full-column, and debondable resin-grouted bolts, and for variations on full-column bolts. Bolt performances were compared using the performance of the 3/4-in full-column resin-grouted bolt as the standard. New and innovative systems can also be qualitatively compared against this standard. Various host mediums were used in the testing: sandstone, concrete, simulated coal, simulated shale, and plaster. Bolt performances expected in other mediums can be inferred from the response patterns obtained in these mediums.

Bartels, J.R.; Pappas, D.M.

1985-01-01T23:59:59.000Z

284

Entanglement monogamy of multipartite higher-dimensional quantum systems using convex-roof extended negativity  

E-Print Network [OSTI]

We propose replacing concurrence by convex-roof extended negativity (CREN) for studying monogamy of entanglement (MoE). We show that all proven MoE relations using concurrence can be rephrased in terms of CREN. Furthermore we show that higher-dimensional (qudit) extensions of MoE in terms of CREN are not disproven by any of the counterexamples used to disprove qudit extensions of MoE in terms of concurrence. We further test the CREN version of MoE for qudits by considering fully or partially coherent mixtures of a qudit W-class state with the vacuum and show that the CREN version of MoE for qudits is satisfied in this case as well. The CREN version of MoE for qudits is thus a strong conjecture with no obvious counterexamples.

Jeong San Kim; Anirban Das; Barry C. Sanders

2008-11-13T23:59:59.000Z

285

Moisture effects in low-slope roofs: Drying rates after water addition with various vapor retarders  

SciTech Connect (OSTI)

Tests have been conducted in the Large Scale Climate Simulator (LSCS) of the US. Building Envelope Research Center at the Oak Ridge National Laboratory (ORNL) to investigate downward drying rates of various unvented, low-slope roof systems. A secondary objective was to study heat flow patterns so as to understand how to control latent heat effects on impermeable heat flux transducers. Nine test sections were tested simultaneously. The sections had a p deck above fibrous-glass insulation and were examples of cold-deck systems. These five sections had various vapor retarder systems on a gypsum board ceiling below the insulation. The other four sections had a lightweight insulating concrete deck below expanded polystyrene insulation and the same vapor retarder systems, and were examples of warm-deck systems. The cold-deck systems had materials that were relatively permeable to water vapor, while the materials in the warm-deck systems were less permeable. All test sections were topped by an impermeable roofing membrane. The test sections were instrumented with thermocouples between all layers and with small heat flux transducers at the bottom and top of the fibrous-glass insulation and in the middle of the expanded polystyrene insulation. Two different kinds of moisture probes were used to qualitatively monitor the movement of the moisture. The heat flux measurements showed that heat conduction dominates the system using impermeable insulation materials, with only a slight increase due to increased thermal conductivity of wet expanded polystyrene. There was significant transfer of latent heat in the test sections with permeable insulation, causing the peak heat fluxes to increase by as much as a factor of two. With temperatures imposed that are typical of summer days, latent heat transfer associated with condensation and evaporation of moisture in the test sections was measured to be as important as the heat transfer by conduction.

Pedersen, C.R. [Technical Univ. of Denmark, Lyngby (Denmark); Petrie, T.W. [Marquette Univ., Milwaukee, WI (United States). Dept. of Mechanical Engineering; Courville, G.E.; Desjarlais, A.O.; Childs, P.W.; Wilkes, K.E. [Oak Ridge National Lab., TN (United States)

1992-10-01T23:59:59.000Z

286

Sunspot Unit Areas: A New Parameter to Describe the Long-term Solar Variability  

E-Print Network [OSTI]

650011, China Big Bear Solar Observatory, New Jersey Institute of Technology, Big Bear City, CA 92314Sunspot Unit Areas: A New Parameter to Describe the Long-term Solar Variability K.J. Li1,2 , J. Qiu). It describes the daily average size of sunspots produced by the dynamo in a solar cycle. The monthly average

287

SOLERAS - Solar Controlled Environment Agriculture Project. Final report, Volume 1. Project summary  

SciTech Connect (OSTI)

A summary of the Solar Controlled Environment Agriculture Project is presented. The design of the greenhouses include transparent double pane glass roof with channels for fluid between the panes, inner pane tinted and double pane extruded acrylic aluminized mylar shade and diffuser. Solar energy technologies provide power for water desalination, for pumping irrigation water, and for cooling and heating the controlled environment space so that crops can grow in arid lands. The project is a joint effort between the United States and Saudi Arabia. (BCS)

Not Available

1985-12-30T23:59:59.000Z

288

Physical Building Information Modeling for Solar Building Design and Simulation- Annual Report 2012  

E-Print Network [OSTI]

. 6 Figure 6. Radiance rendering of the wall. c) BIM to BiPV We developed a Building Integrated Photovoltaic (BiPV) prototype in a BIM platform (Autodesk Revit) to calculate solar position and determine the amount of solar insolation from given... as the weather file. ? The room is lifted up from the earth, so the floor slab is not attached to the ground. ? This one room model consists of a roof, a floor, and four walls. ? No windows and doors are installed. ? All building components are made up of a...

Yan, W.; Haberl, J.; Clayton, M.; Jeong, W.; Kim, J.; Kota, S.; Alcocer, J.; Dixit, M.

2012-01-01T23:59:59.000Z

289

Inclusion of Building Envelope Thermal Lag Effects in Linear Regression Models of Daily Basis Building Energy Use Data  

E-Print Network [OSTI]

Inclusion?of?Building?Envelope?Thermal?Lag? Effects?in?Linear?Regression?Models?of?Daily? Basis?Building?Energy?Use?Data The?12th International?Conference?for?Enhanced?Building?Operations October?22nd?26th,?2012 Manchester,?UK Hiroko...?for?simple?energy?performance?analysis ? 24?hour?cycle?variations?are?averaged?out?in?daily?data. ? The?dominant?driving?terms?of?most?buildings?follow?a?24?h?cycle.?(Rabl,?1992)? solar?irradiance,?OA?temperature,?ventilation,?occupancy?level,?lights?and?equipment?loads,? delayed?loads?due?to?thermal...

Masuda, H.; Claridge, D. E.

2012-01-01T23:59:59.000Z

290

CALIFORNIA SOLAR DATA MANUAL  

E-Print Network [OSTI]

Estimating Unmeasured Solar Radiation Quantities . . . . . .Weather Data . . . . . , . , . . . . . . . . . .Solar DataB. l'he Solar Constant. . . . . . C. Solar Time and Standard

Berdahl, P.

2010-01-01T23:59:59.000Z

291

Solar forecasting review  

E-Print Network [OSTI]

and forecasting of solar radiation data: a review,”forecasting of solar- radiation data,” Solar Energy, vol.sequences of global solar radiation data for isolated sites:

Inman, Richard Headen

2012-01-01T23:59:59.000Z

292

Solar Mapper  

Broader source: Energy.gov [DOE]

Interactive, online mapping tool providing access to spatial data related to siting utility-scale solar facilities in the southwestern United States.

293

Solar Rights  

Broader source: Energy.gov [DOE]

Maine law requires that any municipal ordinance, bylaw, or regulation adopted after September 30, 2009 regulating solar energy devices on residential property follow certain requirements. The rules...

294

Solar Energy.  

E-Print Network [OSTI]

??This thesis is about Photovoltaic (PV) cells and its stresses in various directions by calculating the power generated using solar cells under different conditions to… (more)

Bafana, Ramzi

2014-01-01T23:59:59.000Z

295

Solar Car  

SciTech Connect (OSTI)

Des Moines Central Academy Middle School students compete in the Solar Car Challenge at the National Science Bowl, May 2 in Washington D.C.

None

2010-01-01T23:59:59.000Z

296

ASTM standards for measuring solar reflectance and infrared emittance of construction materials and comparing their steady-state surface temperatures  

SciTech Connect (OSTI)

Numerous experiments on individual buildings in California and Florida show that painting roofs white reduces air conditioning load up to 50%, depending on the thermal resistance or amount of insulation under the roof. The savings, of course, are strong functions of the thermal integrity of a building and climate. In earlier work, the authors have estimated the national energy savings potential from reflective roofs and paved surfaces. Achieving this potential, however, is conditional on receiving the necessary Federal, states, and electric utilities support to develop materials with high solar reflectance and design effective implementation programs. An important step in initiating an effective program in this area is to work with the american Society for Testing and Materials (ASTM) and the industry to create test procedures, rating, and labeling for building and paving materials. A subcommittee of ASTM E06, E06.42, on Cool Construction Materials, was formed as the vehicle to develop standard practices for measuring, rating, and labeling cool construction materials. The subcommittee has also undertaken the development of a standard practice for calculating a solar reflectance index (SRI) of horizontal and low-sloped surfaces. SRI is a measure of the relative steady-state temperature of a surface with respect to a standard white surface (SRI = 100) and a standard black surface (SRI = 0) under standard solar and ambient conditions. This paper discusses the technical issues relating to development of these two ASTM standards.

Akbari, H.; Levinson, R.; Berdahl, P. [Lawrence Berkeley National Lab., CA (United States). Energy and Environment Div.

1996-08-01T23:59:59.000Z

297

Design, development and validation of a training system for roof bolt equipment operators. Open file report, 21 September 1978-10 April 1982  

SciTech Connect (OSTI)

This report describes the approach, procedures, and results of a program to develop training materials for roof bolter operators. The objective of the program was to design and produce a training sequence which would prepare roof bolter trainees for job performance. Data were collected and analyzed using the general procedures of Instructional Systems Development (ISD). Input data came from previous roof bolter training analysis program. These data were expanded and structured through a series of ISD steps: objectives hierarchies, media selection, syllabus, lesson specifications, and training materials development. The resulting program consisted of an ordered sequence of 15 lessons. The media mix for the 15 lessons included lectures, slide-tape lessons, and hands-on instruction using operational roof bolters. Contents of all lessons were reviewed and approved by the Bureau of Mines.

Hinton, W.M. Jr.; Menzer, G.W.; Reilly, R.E.; Baker, R.M.

1982-04-10T23:59:59.000Z

298

Solar 2 Green Energy, Arts & Education Center  

SciTech Connect (OSTI)

The Solar 2 Green Energy, Arts and Education Center is an 8,000 sq.ft. demonstration project that will be constructed to Platinum LEED certification and will be the first carbon-neutral, net-zero energy use public building in New York City, giving it local and national appeal. Employing â��greenâ� building features and holistic engineering practices throughout its international award-winning design, Solar 2 will be powered by a 90kW photovoltaic (PV) array in conjunction with a geothermal heating and cooling system and a high efficient design that seeks to reduce the overall energy load of the building. Solar 2 will replace our current 500 sq.ft. prototype facility - known as Solar 1 - as the educational and cultural centerpiece of a five-block public greenway on the East River in Stuyvesant Cove Park, located along two acres of public riverfront on a newly reclaimed, former brownfield in lower Manhattan. Designed as a public-use complex for year-round environmental education exhibits and onsite activities for all ages and backgrounds, Solar 2 will demonstrate energy-efficiency technologies and sustainable environmental practices available now to all urban residents, eco-tourists, teachers, and students alike. Showcasing one of Solar 2â��s most striking design elements is the PV roof array with a caf�© and river vistas for miles of New York Cityâ��s skylines. Capping the building as a solar-powered landmark, and visible from the FDR Drive, the PV array is also designed to provide visitors below a view of the solar roof when standing outside, as well as directly underneath it. Recognized by an international jury of architects, civil engineers and urban designers by the Swiss-based Holcim Foundation, the Solar 2 design was awarded the prestigious Holcim North American 2008 Gold Award for Sustainable Construction for â��innovative, future-oriented and tangible sustainable construction projects,â� selected from more than 1900 entries. Funding from the Department of Energy was provided to assist with the ongoing design work of Solar 2, including architecture, engineering and the development of construction specifications. The work performed during the project period brought this process as far along as it could go pending the raising of funds to begin construction of the building. Once those funds are secured, we will finalize any additional details needed before beginning the bidding process and then moving into construction. DOEâ��s funding was extremely valuable in helping Solar One determine the feasibility of a net-zero construction on the site and allowed for the design to project to meet the high standards necessary for LEED Platinum status.

Paquette, Jamie C.; Collins, Christopher J.

2011-07-18T23:59:59.000Z

299

DYNAMIC THERMALLY-DISCONNECTED BUILDING ENVELOPES A NEW PARADIGM FOR WALLS AND ROOFS IN LOW ENERGY BUILDINGS  

SciTech Connect (OSTI)

This paper describes numerical and experimental analysis of a novel design concept. Traditionally the thermal design of building envelope assemblies is based on a static energy flow. However, building envelopes are subject to varying environmental conditions. This mismatch between the steady-state principles used in the design of roofs and walls and their dynamic operation results in relatively low thermal efficiency. Design work in support of the development of zero energy houses showed that conventional insulations may not be the most cost effective energy solution. Testing conducted on several strategies to thermally-disconnect wall and roof components showed 70% to 90% reductions in peak hour loads as compared to conventional building practice.

Miller, William A [ORNL] [ORNL; Kosny, Jan [ORNL] [ORNL; Zaltash, Abdolreza [ORNL] [ORNL

2010-01-01T23:59:59.000Z

300

The technical viability of alternative blowing agents in polyisocyanurate roof insulation  

SciTech Connect (OSTI)

This paper is a progress report on the initial results of laboratory test on a set of prototypical, experimental, polyisocyanurate (PIR) laminate boardstock produced to evaluate the viability of alternative hydrochlorofluorocarbons (HCFCs) as blowing agents. All boardstock was produced from the same formulation and was not optimized for thermal performance. Boardstock made in the future may differ in performance from this set. Thermal resistance values are reported for PIR boards prepared with CFC-11, HCFC-123, HCFC-141b, and two blends of HCFC-123 and HCFC-141b. The primary purpose of the laboratory tests is to answer a key question: will foams produced with the alternative blowing agents yield the same outstanding thermal properties obtained with CFC-11 The CFC problem is enormous. Reductions in the production of CFC-11 and CFC-12 may lead to less efficient substitutes and increase annual US energy consumption for building applications alone by one (10{sup 15}Btu) or more (1). The current effort is a cooperative industry/government program to avoid this undesirable effect by establishing the viability of alternative blowing agents. The research project for CFC alternatives resulted from two workshops that involved participants from industry, government, and academia (2). At the initial workshop the participants prioritized 29 research projects of a CFC research menu. The second workshop focused on a single cooperative project, the long-term performance of substitute insulations containing HCFC-123 and HCFC-141b for roofing applications. 20 refs., 5 figs., 7 tabs.

McElroy, D.L.; Graves, R.S.; Weaver, F.J.; Yarbrough, D.W.

1990-01-01T23:59:59.000Z

Note: This page contains sample records for the topic "daily solar roof" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


301

Solar radiation data manual for buildings  

SciTech Connect (OSTI)

Architects and engineers use solar resource information to help design passive solar and daylighting features for buildings. Solar resource information includes data on how much solar radiation and illuminance are available for different window orientations, and how they vary. This manual provides solar radiation and illuminance values for a horizontal window and four vertical windows (facing north, east, south, and west) for 239 stations in the United States and its territories. The solar radiation values are monthly and yearly averages for the period of 1961--1990. Included are values showing the solar radiation incident on the window and the amount transmitted into the living space, with and without exterior shading of the window. Illuminance values are presented r average dismal profiles for 4 months of the year. In addition to the solar radiation and illuminance data, this manual contains tables listing climatic condition such as average temperature, average daily minimum and maximum temperature, record minimum and maxi mum temperature, average heating and cooling degree days, average humidity ratio, average wind speed, an average clearness index. The solar radiation, illuminance, and climatic data a presented in tables. Data for each station are presented on a single page, and the pages are arranged alphabetically by the state or territory two-letter abbreviation. Within a state or territory, the pages are arranged alp betically by city or island.

Marion, W.; Wilcox, S.

1995-09-01T23:59:59.000Z

302

Using Cool Roofs to Reduce Energy Use, Greenhouse Gas Emissions, and Urban Heat-island Effects: Findings from an India Experiment  

SciTech Connect (OSTI)

Cool roofs, cool pavements, and urban vegetation reduce energy use in buildings, lower local air pollutant concentrations, and decrease greenhouse gas emissions from urban areas. This report summarizes the results of a detailed monitoring project in India and related simulations of meteorology and air quality in three developing countries. The field results quantified direct energy savings from installation of cool roofs on individual commercial buildings. The measured annual energy savings potential from roof-whitening of previously black roofs ranged from 20-22 kWh/m2 of roof area, corresponding to an air-conditioning energy use reduction of 14-26% in commercial buildings. The study estimated that typical annual savings of 13-14 kWh/m2 of roof area could be achieved by applying white coating to uncoated concrete roofs on commercial buildings in the Metropolitan Hyderabad region, corresponding to cooling energy savings of 10-19%. With the assumption of an annual increase of 100,000 square meters of new roof construction for the next 10 years in the Metropolitan Hyderabad region, the annual cooling energy savings due to whitening concrete roof would be 13-14 GWh of electricity in year ten alone, with cumulative 10-year cooling energy savings of 73-79 GWh for the region. The estimated savings for the entire country would be at least 10 times the savings in Hyderabad, i.e., more than 730-790 GWh. We estimated that annual direct CO2 reduction associated with reduced energy use would be 11-12 kg CO2/m2 of flat concrete roof area whitened, and the cumulative 10-year CO2 reduction would be approximately 0.60-0.65 million tons in India. With the price of electricity estimated at seven Rupees per kWh, the annual electricity savings on air-conditioning would be approximately 93-101 Rupees per m2 of roof. This would translate into annual national savings of approximately one billion Rupees in year ten, and cumulative 10-year savings of over five billion Rupees for cooling energy in India. Meteorological simulations in this study indicated that a reduction of 2C in air temperature in the Hyderabad area would be likely if a combination of increased surface albedo and vegetative cover are used as urban heat-island control strategies. In addition, air-temperature reductions on the order of 2.5-3.5C could be achieved if moderate and aggressive heat-island mitigation measures are adopted, respectively. A large-scale deployment of mitigation measures can bring additional indirect benefit to the urban area. For example, cooling outside air can improve the efficiency of cooling systems, reduce smog and greenhouse gas (GHG) emissions, and indirectly reduce pollution from power plants - all improving environmental health quality. This study has demonstrated the effectiveness of cool-roof technology as one of the urban heat-island control strategies for the Indian industrial and scientific communities and has provided an estimate of the national energy savings potential of cool roofs in India. These outcomes can be used for developing cool-roof building standards and related policies in India. Additional field studies, built upon the successes and lessons learned from this project, may be helpful to further confirm the scale of potential energy savings from the application of cooler roofs in various regions of India. In the future, a more rigorous meteorological simulation using urbanized (meso-urban) meteorological models should be conducted, which may produce a more accurate estimate of the air-temperature reductions for the entire urban area.

Akbari, Hashem; Xu, Tengfang; Taha, Haider; Wray, Craig; Sathaye, Jayant; Garg, Vishal; Tetali, Surekha; Babu, M. Hari; Reddy, K. Niranjan

2011-05-25T23:59:59.000Z

303

Milk, Eggs and Solar: Grocery Co-Op Puts Photovoltaics to Work...  

Broader source: Energy.gov (indexed) [DOE]

Market, the 3,000 daily customers also learn about the co-op's 136 rooftop photovoltaic panels and monthly "Solar Made Simple" seminars. Reducing energy demand With freezer and...

304

A Method for Calculating Reference Evapotranspiration on Daily Time Scales  

E-Print Network [OSTI]

Measures of reference evapotranspiration are essential for applications of agricultural management and water resources engineering. Using numerous esoteric variables, one can calculate daily reference evapotranspiration ...

Farmer, William

305

Solar Rights  

Broader source: Energy.gov [DOE]

Hawaii law prohibits the creation of any covenant or restriction contained in any document restricting the installation or use of a solar energy system on a residential dwelling or townhouse. ...

306

Predicting Daily Net Radiation Using Minimum Climatological Data1  

E-Print Network [OSTI]

Predicting Daily Net Radiation Using Minimum Climatological Data1 S. Irmak, M.ASCE2 ; A. Irmak3 ; J for predicting daily Rn have been widely used. However, when the paucity of detailed climatological data with National Weather Service climatological datasets that only record Tmax and Tmin on a regular basis. DOI: 10

307

SCIENTIFIC NOTE Variations in daily quality assurance dosimetry from device  

E-Print Network [OSTI]

SCIENTIFIC NOTE Variations in daily quality assurance dosimetry from device levelling, feet procedures are an essential part of radiotherapy medical physics. Devices such as the Sun Nuclear, DQA3 are effective tools for analysis of daily dosimetry including flatness, symmetry, energy, field size and central

Yu, K.N.

308

A Feasibility Study: Mining Daily Traces for Home Heating Control  

E-Print Network [OSTI]

A Feasibility Study: Mining Daily Traces for Home Heating Control Dezhi Hong and Kamin Whitehouse savings as well as 14.9%­59.2% reduction in miss time. Keywords Energy, home heating, daily traces, prediction 1. INTRODUCTION Heating, ventilation and cooling (HVAC) contributes most to a home's energy bills

Whitehouse, Kamin

309

Appendix 22 Draft Nutrient Management Plan and Total Maximum Daily  

E-Print Network [OSTI]

Appendix 22 Draft Nutrient Management Plan and Total Maximum Daily Load for Flathead Lake, Montana. #12;11/01/01 DRAFT i October 30, 2001 Draft Nutrient Management Plan and Total Maximum Daily Load..............................................................................................................................2-11 SECTION 3.0 APPLICABLE WATER QUALITY STANDARDS

310

Solar forecasting review  

E-Print Network [OSTI]

2.1.2 European Solar Radiation Atlas (ESRA)2.4 Evaluation of Solar Forecasting . . . . . . . . .2.4.1 Solar Variability . . . . . . . . . . . . .

Inman, Richard Headen

2012-01-01T23:59:59.000Z

311

Residential Solar Valuation Rates  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Residential Solar Valuation Rates Karl R. Rbago Rbago Energy LLC 1 The Ideal Residential Solar Tariff Fair to the utility and non-solar customers Fair compensation to...

312

Solar powered desalination system  

E-Print Network [OSTI]

2008, uses concentrated solar power to split water. Figurethe main reason the potential for solar power is boundless.a clean energy source, solar power is inexhaustible, fairly

Mateo, Tiffany Alisa

2011-01-01T23:59:59.000Z

313

CALIFORNIA SOLAR DATA MANUAL  

E-Print Network [OSTI]

Solar Energy Laboratory 1303 Engineering Research Building UniversitySolar Energy Laboratory 1303 Engineering Research laboratory UniversitySolar Energy Group, Energy and Lawrence Berkeley Laboratory University

Berdahl, P.

2010-01-01T23:59:59.000Z

314

Nanocrystal Solar Cells  

E-Print Network [OSTI]

Nov, 2005). Chapter 4 Hybrid solar cells with 3-dimensionalinorganic nanocrystal solar cells 5.1 Introduction In recentoperation of organic based solar cells and distinguish them

Gur, Ilan

2006-01-01T23:59:59.000Z

315

CALIFORNIA SOLAR DATA MANUAL  

E-Print Network [OSTI]

room )I I( I I ,i I CALIFORNIA SOLAR DATA MANUAL I. ! I ienergy resource. The California Solar Data Manual describestowards fulfilling California's solar data needs is the

Berdahl, P.

2010-01-01T23:59:59.000Z

316

CALIFORNIA SOLAR DATA MANUAL  

E-Print Network [OSTI]

for Reno, Nevada . . . . . (Q) Solar Data for China Lake/using Nominal Solar Profiles China Lake/Inyokern ANGLE OFStations - China Lake, Edwards Monthly Latitude: Jan SOLAR

Berdahl, P.

2010-01-01T23:59:59.000Z

317

Solar forecasting review  

E-Print Network [OSTI]

Figure 6.3: Birds-eye view of solar array deployment siteBirds-eye 7. Birds-eye view of of solar solar array array

Inman, Richard Headen

2012-01-01T23:59:59.000Z

318

Solar Contractor Licensing  

Broader source: Energy.gov [DOE]

The California Contractors State License Board administers contractor licenses. The C-46 Solar Contractor license covers active solar water and space heating systems, solar pool heating systems,...

319

Solar forecasting review  

E-Print Network [OSTI]

2.1.2 European Solar Radiation Atlas (ESRA)for supplementing solar radiation network data,” FinalEstimating incident solar radiation at the surface from geo-

Inman, Richard Headen

2012-01-01T23:59:59.000Z

320

Solar Resource Assessment  

Broader source: Energy.gov [DOE]

DOE solar resource research focuses on understanding historical solar resource patterns and making future predictions, both of which are needed to support reliable power system operation. As solar...

Note: This page contains sample records for the topic "daily solar roof" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


321

Solar powered desalination system  

E-Print Network [OSTI]

As a clean energy source, solar power is inexhaustible,renewables for energy sources, including solar power. Also,Requirements Energy Source Natural Gas Nuclear Solar Wind

Mateo, Tiffany Alisa

2011-01-01T23:59:59.000Z

322

DRAFT INTERIM REPORT: NATIONAL PROGRAM PLAN FOR PASSIVE AND HYBRID SOLAR HEATING AND COOLING  

E-Print Network [OSTI]

concepts for space heating using remote col- lection withheating systems in terms of the fan owing matrix: DIRECT INDIRECT ISOLATED SOUTH APERTURE SHADED ROOF APERTURE ROOF APERTURE REMOTE

Authors, Various

2012-01-01T23:59:59.000Z

323

Optimisation of buildings' solar irradiation availability  

SciTech Connect (OSTI)

In order to improve the sustainability of new and existing urban settlements it is desirable to maximise the utilisation of the solar energy incident on the building envelope, whether by passive or active means. To this end we have coupled a multi-objective optimisation algorithm with the backwards ray tracing program RADIANCE which itself uses a cumulative sky model for the computation of incident irradiation (W h/m{sup 2}) in a single simulation. The parameters to optimise are geometric (the height of buildings up to their facade and the height and orientation of roofs), but with the constraint of maintaining an overall built volume, and the objective function is heating season solar irradiation offset by envelope heat losses. This methodology has been applied to a range of urban typologies and produces readily interpretable results. The focus of this work is on the design of new urban forms but the method could equally be applied to examine the relative efficiency of existing urban settlements, by comparison of existing forms with the calculated optima derived from relevant specifications of the building envelope. (author)

Kaempf, Jerome Henri; Montavon, Marylene; Bunyesc, Josep; Robinson, Darren [Solar Energy and Building Physics Laboratory, Station 18, Ecole Polytechnique Federale de Lausanne, 1015 Lausanne (Switzerland); Bolliger, Raffaele [Industrial Energy Systems Laboratory, Station 9, Ecole Polytechnique Federale de Lausanne, 1015 Lausanne (Switzerland)

2010-04-15T23:59:59.000Z

324

Building America Best Practices Series, Volume 6: High-Performance Home Technologies: Solar Thermal & Photovoltaic Systems  

SciTech Connect (OSTI)

This guide is was written by PNNL for the US Department of Energy's Building America program to provide information for residential production builders interested in building near zero energy homes. The guide provides indepth descriptions of various roof-top photovoltaic power generating systems for homes. The guide also provides extensive information on various designs of solar thermal water heating systems for homes. The guide also provides construction company owners and managers with an understanding of how solar technologies can be added to their homes in a way that is cost effective, practical, and marketable. Twelve case studies provide examples of production builders across the United States who are building energy-efficient homes with photovoltaic or solar water heating systems.

Baechler, Michael C.; Gilbride, Theresa L.; Ruiz, Kathleen A.; Steward, Heidi E.; Love, Pat M.

2007-06-04T23:59:59.000Z

325

Solar ADEPT: Efficient Solar Energy Systems  

SciTech Connect (OSTI)

Solar ADEPT Project: The 7 projects that make up ARPA-E's Solar ADEPT program, short for 'Solar Agile Delivery of Electrical Power Technology,' aim to improve the performance of photovoltaic (PV) solar energy systems, which convert the sun's rays into electricity. Solar ADEPT projects are integrating advanced electrical components into PV systems to make the process of converting solar energy to electricity more efficient.

None

2011-01-01T23:59:59.000Z

326

Concentrating Solar Power  

SciTech Connect (OSTI)

Summarizes the goals and activities of the DOE Solar Energy Technologies Program efforts within its concentrating solar power subprogram.

Not Available

2008-09-01T23:59:59.000Z

327

average daily intake: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

energy and nitrogen balance. The amounts of alfalfa eaten and the levels of nitrogen. Daylight ratio effect is evident in one case : long daily daylight increases the proportion of...

328

CUTTING SOLAR RED TAPECUTTING SOLAR RED TAPE Evergreen State Solar PartnershipEvergreen State Solar Partnership  

E-Print Network [OSTI]

CUTTING SOLAR RED TAPECUTTING SOLAR RED TAPE Evergreen State Solar PartnershipEvergreen State Solar Partnership Rooftop Solar Challenge 1 Sunshot #12;WASHINGTON PV CONTEXTWASHINGTON PV CONTEXT 285 cities, 39 Installations happen where process is easier #12;EVERGREEN STATE SOLAR PARTNERSHIP Commerce NWSEEDEdmonds

329

Evaluation of solar collectors for heat pump applications. Final report  

SciTech Connect (OSTI)

The study was initiated to evaluate the potential utility of very low cost (possibly unglazed and uninsulated) solar collectors to serve as both heat collection and rejection devices for a liquid source heat pump. The approach consisted of exercising a detailed analytical simulation of the complete heat pump/solar collector/storage system against heating and cooling loads derived for typical single-family residences in eight US cities. The performance of each system was measured against that of a conventional air-to-air heat pump operating against the same loads. In addition to evaluation of solar collector options, the study included consideration of water tanks and buried pipe grids to provide thermal storage. As a supplement to the analytical tasks, the study included an experimental determination of night sky temperature and convective heat transfer coefficients for surfaces with dimensions typical of solar collectors. The experiments were conducted in situ by placing the test apparatus on the roofs of houses in the Denver, Colorado, area. (MHR)

Skartvedt, Gary; Pedreyra, Donald; McMordle, Dr., Robert; Kidd, James; Anderson, Jerome; Jones, Richard

1980-08-01T23:59:59.000Z

330

SOLAR ENERGY FOR ACADEMIC INSTITUTIONS Solar Suitability Assessment  

E-Print Network [OSTI]

SOLAR ENERGY FOR ACADEMIC INSTITUTIONS Solar Suitability Assessment of Dalhousie University.................................................................................................. 2 2.2 Solar Radiation Data for Calculating Solar Energy Resource .................... 3 3 Campus.1 Evaluation of Suitability for Solar Energy Generation................................ 12 4.2 Solar

Brownstone, Rob

331

Boston Massachusetts: Solar in Action (Brochure), Solar America...  

Broader source: Energy.gov (indexed) [DOE]

Solar America Cities, Energy Efficiency & Renewable Energy (EERE) San Francisco, California: Solar in Action (Brochure), Solar America Cities, Energy Efficiency &...

332

Solar Impulse's Solar-Powered Plane  

ScienceCinema (OSTI)

Solar Impulse lands in Washington, DC at Washington Dulles International Airport as part of its journey across the United States. Secretary Ernest Moniz speaks about how advancements like those at the Department of Energy are leading the way for innovations like the solar-powered plane. Footage of the solar-powered plane courtesy of Solar Impulse.

Moniz, Ernest; Piccard, Bertrand; Reicher, Dan

2014-01-07T23:59:59.000Z

333

Petrovay: Solar physics Helioseismology SOLAR OSCILLATIONS: INTRODUCTION  

E-Print Network [OSTI]

: Solar oscillations first observed by both Doppler and intensity method (Leighton, Noyes & Simon 1962: ApPetrovay: Solar physics Helioseismology SOLAR OSCILLATIONS: INTRODUCTION Small departures from hydrostatic equilibrium caused by ­ turbulent convection ­ localized events related to solar activity (e

Petrovay, KristĂłf

334

Solar Impulse's Solar-Powered Plane  

SciTech Connect (OSTI)

Solar Impulse lands in Washington, DC at Washington Dulles International Airport as part of its journey across the United States. Secretary Ernest Moniz speaks about how advancements like those at the Department of Energy are leading the way for innovations like the solar-powered plane. Footage of the solar-powered plane courtesy of Solar Impulse.

Moniz, Ernest; Piccard, Bertrand; Reicher, Dan

2013-07-08T23:59:59.000Z

335

Berkeley, California: Solar in Action (Brochure), Solar America...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Berkeley, California: Solar in Action (Brochure), Solar America Cities, Energy Efficiency & Renewable Energy (EERE) Berkeley, California: Solar in Action (Brochure), Solar America...

336

China Glass Solar aka CG Solar formerly Weihai Bluestar Terra...  

Open Energy Info (EERE)

Solar aka CG Solar formerly Weihai Bluestar Terra Photovoltaic Co Ltd Jump to: navigation, search Name: China Glass Solar (aka CG Solar, formerly Weihai Bluestar Terra Photovoltaic...

337

Tucson, Arizona: Solar in Action (Brochure), Solar America Cities...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Tucson, Arizona: Solar in Action (Brochure), Solar America Cities, Energy Efficiency & Renewable Energy (EERE) Tucson, Arizona: Solar in Action (Brochure), Solar America Cities,...

338

Austin, Texas: Solar in Action (Brochure), Solar America Cities...  

Broader source: Energy.gov (indexed) [DOE]

Austin, Texas: Solar in Action (Brochure), Solar America Cities, Energy Efficiency & Renewable Energy (EERE) Austin, Texas: Solar in Action (Brochure), Solar America Cities, Energy...

339

Pittsburgh, Pennsylvania: Solar in Action (Brochure), Solar America...  

Energy Savers [EERE]

Pittsburgh, Pennsylvania: Solar in Action (Brochure), Solar America Cities, Energy Efficiency & Renewable Energy (EERE) Pittsburgh, Pennsylvania: Solar in Action (Brochure), Solar...

340

Seattle, Washington: Solar in Action (Brochure), Solar America...  

Broader source: Energy.gov (indexed) [DOE]

Seattle, Washington: Solar in Action (Brochure), Solar America Cities, Energy Efficiency & Renewable Energy (EERE) Seattle, Washington: Solar in Action (Brochure), Solar America...

Note: This page contains sample records for the topic "daily solar roof" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


341

Knoxville, Tennessee: Solar in Action (Brochure), Solar America...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Knoxville, Tennessee: Solar in Action (Brochure), Solar America Cities, Energy Efficiency & Renewable Energy (EERE) Knoxville, Tennessee: Solar in Action (Brochure), Solar America...

342

EIS-0449: Solar Millennium Blythe Solar Power Project in Riverside...  

Broader source: Energy.gov (indexed) [DOE]

9: Solar Millennium Blythe Solar Power Project in Riverside County, CA EIS-0449: Solar Millennium Blythe Solar Power Project in Riverside County, CA December 10, 2010 EIS-0449:...

343

EA-1683: Abengoa Solar's Solana Concentrating Solar Power Facility...  

Broader source: Energy.gov (indexed) [DOE]

83: Abengoa Solar's Solana Concentrating Solar Power Facility, Gila Bend, AZ EA-1683: Abengoa Solar's Solana Concentrating Solar Power Facility, Gila Bend, AZ May 3, 2010 EA-1683:...

344

San Antonio, Texas: Solar in Action (Brochure), Solar America...  

Energy Savers [EERE]

San Antonio, Texas: Solar in Action (Brochure), Solar America Cities, Energy Efficiency & Renewable Energy (EERE) San Antonio, Texas: Solar in Action (Brochure), Solar America...

345

Denver, Colorado: Solar in Action (Brochure), Solar America Cities...  

Energy Savers [EERE]

Denver, Colorado: Solar in Action (Brochure), Solar America Cities, Energy Efficiency & Renewable Energy (EERE) Denver, Colorado: Solar in Action (Brochure), Solar America Cities,...

346

Milwaukee, Wisconsin: Solar in Action (Brochure), Solar America...  

Energy Savers [EERE]

Milwaukee, Wisconsin: Solar in Action (Brochure), Solar America Cities, Energy Efficiency & Renewable Energy (EERE) Milwaukee, Wisconsin: Solar in Action (Brochure), Solar America...

347

San Diego, California: Solar in Action (Brochure), Solar America...  

Broader source: Energy.gov (indexed) [DOE]

San Diego, California: Solar in Action (Brochure), Solar America Cities, Energy Efficiency & Renewable Energy (EERE) San Diego, California: Solar in Action (Brochure), Solar...

348

Ann Arbor, Michigan: Solar in Action (Brochure), Solar America...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Ann Arbor, Michigan: Solar in Action (Brochure), Solar America Cities, Energy Efficiency & Renewable Energy (EERE) Ann Arbor, Michigan: Solar in Action (Brochure), Solar America...

349

Madison, Wisconsin: Solar in Action (Brochure), Solar America...  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Madison, Wisconsin: Solar in Action (Brochure), Solar America Cities, Energy Efficiency & Renewable Energy (EERE) Madison, Wisconsin: Solar in Action (Brochure), Solar America...

350

Solar Neutrinos  

E-Print Network [OSTI]

Experimental work with solar neutrinos has illuminated the properties of neutrinos and tested models of how the sun produces its energy. Three experiments continue to take data, and at least seven are in various stages of planning or construction. In this review, the current experimental status is summarized, and future directions explored with a focus on the effects of a non-zero theta-13 and the interesting possibility of directly testing the luminosity constraint. Such a confrontation at the few-percent level would provide a prediction of the solar irradiance tens of thousands of years in the future for comparison with the present-day irradiance. A model-independent analysis of existing low-energy data shows good agreement between the neutrino and electromagnetic luminosities at the +/- 20 % level.

R. G. H. Robertson

2006-02-05T23:59:59.000Z

351

Solar collector  

SciTech Connect (OSTI)

A solar collector unit comprises a body of rigid thermally insulating material having a surface in the shape of about half a cylindrical parabola, the parabolic surface being provided with a reflective surface, a conduit being positioned with its long axis in the median plane of the parabola, said conduit serving as conduit for the heat-exchange medium, the surface of said conduit facing the parabolic surface being a selective surface, a transparent cover being provided on top of the device.

Dostrovsky, I.

1981-02-10T23:59:59.000Z

352

Solar Blog  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious Rank EERE: AlternativeEnvironment,Institutes and ResponseStaffServicesFuture |Assurance PlanCD-4),Solar96426

353

Using Cool Roofs to Reduce Energy Use, Greenhouse Gas Emissions, and Urban Heat-island Effects: Findings from an India Experiment  

E-Print Network [OSTI]

heat fluxes, solar radiation, and electric power consumed byheat fluxes, solar radiation, and electric power consumed byheat fluxes, solar radiation, and electric power consumed by

Akbari, Hashem

2011-01-01T23:59:59.000Z

354

SOLAR SEMINAR SERIES S P R I N G 2 0 1 4 P H O T O V O L T A I C S E M I N A R S E R I E S  

E-Print Network [OSTI]

to the quantified cost avoidance opportunities described above, there are a number of "soft" benefits for advocatingSOLAR SEMINAR SERIES S P R I N G 2 0 1 4 P H O T O V O L T A I C S E M I N A R S E R I E S NARAYAN Energy Center Residential roofing applications can satisfy >50% of residential electricity demand with 10

Ginzel, Matthew

355

Cost Analysis of Roof-Only Air Sealing and Insulation Strategies on 1 1/2-Story Homes in Cold Climates  

SciTech Connect (OSTI)

The External Thermal and Moisture Management System (ETMMS), typically seen in deep energy retrofits, is a valuable approach for the roof-only portions of existing homes, particularly the 1 1/2-story home. It is effective in reducing energy loss through the building envelope, improving building durability, reducing ice dams, and providing opportunities to improve occupant comfort and health.

Ojczyk, C.

2014-12-01T23:59:59.000Z

356

Design and Simulation for Architectural Geometry Figure 1: Daytime and nighttime scenes of designed roof by using the developed computational tools  

E-Print Network [OSTI]

roof by using the developed computational tools 031.PDF Keywords: Architectural Geometry, Procedural an innovative computational design tool used to edit architectural geometry interactively and demonstratesDesign and Simulation for Architectural Geometry Figure 1: Daytime and nighttime scenes of designed

357

Solar Innovator | Alta Devices  

ScienceCinema (OSTI)

Selected to participate in the Energy Department's SunShot Initiative, Alta Devices produces solar cells that convert sunlight into electricity at world record-breaking levels of efficiency. Through its innovative solar technology Alta is helping bring down the cost of solar. Learn more about the Energy Department's efforts to advance solar technology at energy.gov/solar .

Mattos, Laila; Le, Minh

2013-05-29T23:59:59.000Z

358

Solar neutrinos and the solar composition problem  

E-Print Network [OSTI]

Standard solar models (SSM) are facing nowadays a new puzzle: the solar composition problem. New determinations of solar metal abundances lead SSM calculations to conflict with helioseismological measurements, showing discrepancies that extend from the convection zone to the solar core and can not be easily assigned to deficiencies in the modelling of the solar convection zone. We present updated solar neutrino fluxes and uncertainties for two SSM with high (old) and low (new) solar metallicity determinations. The uncertainties in iron and carbon abundances are the largest contribution to the uncertainties of the solar neutrino fluxes. The uncertainty on the ^14N+p -> ^15O+g rate is the largest of the non-composition uncertainties to the CNO neutrino fluxes. We propose an independent method to help identify which SSM is the correct one. Present neutrino data can not distinguish the solar neutrino predictions of both models but ongoing measurements can help to solve the puzzle.

Carlos Pena-Garay; Aldo Serenelli

2008-11-16T23:59:59.000Z

359

E-Print Network 3.0 - annual average daily traffic Sample Search...  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Data Systems 2000. Annual Average Daily Truck Traffic on the California State... Lockout and Non-Lockout Weekdays Average Daily Traffic Volume (vehday) All Cars Trucks ......

360

E-Print Network 3.0 - average daily traffic Sample Search Results  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Data Systems 2000. Annual Average Daily Truck Traffic on the California State... Lockout and Non-Lockout Weekdays Average Daily Traffic Volume (vehday) All Cars Trucks...

Note: This page contains sample records for the topic "daily solar roof" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


361

Assessment of solar and wind energy resources in Ethiopia. I. Solar energy  

SciTech Connect (OSTI)

This paper describes how data from a variety of sources are merged to present new countrywide maps of the solar energy distribution over Ethiopia. The spatial coverage of stations with radiation data was found to be unsatisfactory for the purpose of a countrywide solar energy assessment exercise. Therefore, radiation had to be predicted from sunshine hours by employing empirical models. Using data from seven stations in Ethiopia, linear and quadratic correlation relationships between monthly mean daily solar radiation and sunshine hours per day have been developed. These regional models show a distinct improvement over previously employed countrywide models. To produce a national solar-energy distribution profile, a spatial extension of the radiation/sunshine relationships had to be carried out. To do this, the intercepts(a) and slopes(b) of each of the seven linear regression equations and another six from previous studies, completed in neighbouring Sudan, Kenya and Yemen, were used to interpolate the corresponding values to areas between them. Subsequent to these procedures, 142 stations providing only sunshine data were assigned their `appropriate` a and b values to estimate the amount of solar radiation received, which was then used to produce annual and monthly solar radiation distribution maps for Ethiopia. The results show that in all regions solar energy is an abundant resource. 19 refs., 11 figs., 4 tabs.

Drake, F.; Mulugetta, Y. [Univ. of Leeds (United Kingdom)] [Univ. of Leeds (United Kingdom)

1996-09-01T23:59:59.000Z

362

Solar Decathlon  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data Center Home Page on Delicious RankCombustion |Energy Usage » SearchEnergyDepartmentScoping Study |4 Solar Background Document 4U.S.

363

Solar Power  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administrationcontroller systemsBiSite CulturalDepartment ofatRenewable Energy »Buildings Solar

364

Nanocrystal Solar Cells  

E-Print Network [OSTI]

Nov, 2005). Chapter 4 Hybrid solar cells with 3-dimensional5 All-inorganic nanocrystal solar cells 5.1 Introduction Inoperation of organic based solar cells and distinguish them

Gur, Ilan

2006-01-01T23:59:59.000Z

365

Solar forecasting review  

E-Print Network [OSTI]

P(t) and the boring solar sensor. Denoting the bulk veloci Żequipped with solar irradiance sensors, see Figure 10.3.f that utilizes the low solar cost sensor network deployment

Inman, Richard Headen

2012-01-01T23:59:59.000Z

366

Solar Energy Entrepreneurs  

E-Print Network [OSTI]

Solar Energy Entrepreneurs Meeting MD, DC, DE, VA Region May 31, 2012 #12;Solar Energy Entrepreneurs Meeting MD, DC, DE, VA Region Meeting Objectives should attend if you.... · ... work in the solar energy market

Rubloff, Gary W.

367

Solar Equipment Certification  

Broader source: Energy.gov [DOE]

Under the Solar Energy Standards Act of 1976, the Florida Solar Energy Center (FSEC) is responsible for certifying all solar equipment sold in Florida. A manufacturer who wishes to have their...

368

Solar Contractor Licensing  

Broader source: Energy.gov [DOE]

Nevada law requires that solar energy system installers be licensed by the Nevada State Contractors Board. Contractors may be licensed under License Classification C-37 (solar contracting for solar...

369

Solar Heating Contractor Licensing  

Broader source: Energy.gov [DOE]

Michigan offers a solar heating contractor specialty license to individuals who have at least three years of experience installing solar equipment under the direction of a licensed solar contractor...

370

JEA- Solar Incentive Program  

Broader source: Energy.gov [DOE]

The JEA Solar Incentive Program provides rebates to JEA's residential customers who install new and retrofit solar hot water heaters on their homes. The rebate is worth $800 for new solar thermal...

371

Solar project description for Arno Kahn/Builders and Laborers Commonwealth single family residence Duluth, Minnesota  

SciTech Connect (OSTI)

The Arno Kahn/Builders and Laborers Commonwealth Site is a house in a Minnesota suburb. It combines a modified direct-gain sun space system with a thermal envelope. The living space is separated from the sun space by a three-story mass wall. Sunlight enters the three-story solarium and heats the mass wall which in turn heats the air. The warm air is then distributed through the thermal envelope. Manually operated shades provide night insulation for the south-facing windows, and roof overhangs and a turbine vent in the solarium roof prevent overheating. Domestic hot water is preheated in four tanks located behind the window of the basement sunroom. The concrete floor in the basement provides part of the heat storage. Wood burning stoves and electric baseboard heaters provide auxiliary heating. Five modes of operation are described: collector-to-storage, collector-to-space heating, storage-to-space heating, solarium cooling and domestic hot water preheating. The instrumentation for the National Solar Data Network is described. The solar energy portion of the construction costs is estimated to be $7000. (LEW)

Moore, D

1982-04-30T23:59:59.000Z

372

Solar collector  

DOE Patents [OSTI]

The field of this invention is solar collectors, and more particularly, the invention pertains to a flat plate collector that employs high performance thin films. The solar collector of this invention overcomes several problems in this field, such as excessive hardware, cost and reliability, and other prior art drawbacks outlined in the specification. In the preferred form, the apparatus features a substantially rigid planar frame (14). A thin film window (42) is bonded to one planar side of the frame. An absorber (24) of laminate construction is comprised of two thin film layers (24a, 24b) that are sealed perimetrically. The layers (24a, 24b) define a fluid-tight planar envelope (24c) of large surface area to volume through which a heat transfer fluid flows. Absorber (24) is bonded to the other planar side of the frame. The thin film construction of the absorber assures substantially full envelope wetting and thus good efficiency. The window and absorber films stress the frame adding to the overall strength of the collector.

Wilhelm, William G. (Cutchogue, NY)

1982-01-01T23:59:59.000Z

373

Solar skylight  

DOE Patents [OSTI]

A reflective shutter rotates within a skylight housing in such a fashion as to control solar energy thereby providing a combination of heating, lighting, and ventilation. The skylight housing has three faces: a glazed southern face, a glazed northern face, and an open downwardly oriented face to the interior of the structure. Counter-weighted pivot arms support the shutter at either end causing the center of rotation to pass through the center of gravity. The shutter has three basic positions: In the first position, during the winter day, the shutter closes off the northern face, allowing solar energy to enter directly into the supporting structure providing heat gain and daylighting. In the second position, during the winter night, the shutter closes off the open face to the interior, providing insulation between the structure and the skylight housing. In the third position, during the non-heating season, the shutter closes off the southern face blocking unwanted heat gain but allowing diffuse northern light to penetrate for daylighting. In this last position, a means is provided for ventilating by natural convection. The apparatus can be operated either manually or by motor.

Adamson, James C. (Osprey La., Rumson, NJ 07760)

1984-01-01T23:59:59.000Z

374

A single dimensionless variable for solar chimney power plant modeling  

SciTech Connect (OSTI)

The solar chimney power plant is a relatively new technology for generating electricity from solar energy. In this paper dimensional analysis is used together with engineering intuition to combine eight primitive variables into only one dimensionless variable that establishes a dynamic similarity between a prototype and its scaled models. Three physical configurations of the plant were numerically tested for similarity: fully geometrically similar, partially geometrically similar, and dissimilar types. The values of the proposed dimensionless variable for all these cases were found to be nominally equal to unity. The value for the physical plant actually built and tested previously was also evaluated and found to be about the same as that of the numerical simulations, suggesting the validity of the proposition. The physical meaning of this dimensionless (similarity) variable is also interpreted; and the connection between the Richardson number and this new variable was found. It was found also that, for a fixed solar heat flux, different-sized models that are fully or partially geometrically similar share an equal excess temperature across the roof outlet. (author)

Koonsrisuk, Atit; Chitsomboon, Tawit [School of Mechanical Engineering, Institute of Engineering, Suranaree University of Technology, Muang District, Nakhon Ratchasima 30000 (Thailand)

2009-12-15T23:59:59.000Z

375

Description: Lithium batteries are used daily in our work  

E-Print Network [OSTI]

Description: Lithium batteries are used daily in our work activities from flashlights, cell phones containing one SureFire 3-volt non-rechargeable 123 lithium battery and one Interstate 3-volt non-rechargeable 123 lithium battery. A Garage Mechanic had the SureFire flashlight in his shirt pocket with the lens

376

RESPITE SERVICES Enhancing the Quality of Daily Life for  

E-Print Network [OSTI]

of income more negative attitude toward care recipient loss of free time abuse sleeplessness exhaustionRESPITE SERVICES Enhancing the Quality of Daily Life for Caregivers and Care Receivers PR E PA R E is that the loved ones in need of care usually get better quality care from their caregivers because the care

Tipple, Brett

377

Modelling Daily Multivariate Pollutant Data at Multiple Sites  

E-Print Network [OSTI]

. In conducting such time series studies to investigate the relationship between air pollution and a health investigating the health effects of daily changes in air pollution, the exposures are essentially treated effects of air pollution. Alternative objectives include the design problem of the positioning of a new

Washington at Seattle, University of

378

amplitude daily geomagnetic: Topics by E-print Network  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

of the energy input. While the AL index is reasonably well related to the solar wind energy functions, the AU index shows a substantially poorer relationship. In addition, high...

379

Solar Industry At Work: Streamlining Home Solar Installation...  

Broader source: Energy.gov (indexed) [DOE]

Solar Industry At Work: Streamlining Home Solar Installation Solar Industry At Work: Streamlining Home Solar Installation June 12, 2012 - 11:59am Addthis Sunrun is a home solar...

380

Concentrated Solar Thermoelectric Power  

Broader source: Energy.gov (indexed) [DOE]

CONCENTRATING SOLAR POWER PROGRAM REVIEW 2013 Concentrated Solar Thermoelectric Power Principal Investigator: Prof. Gang Chen Massachusetts Institute of Technology Cambridge, MA...

Note: This page contains sample records for the topic "daily solar roof" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


381

Solar heating in Colombia.  

E-Print Network [OSTI]

?? This report describes the process of a thesis implemented in Colombia concerning solar energy. The project was to install a self-circulating solar heating system,… (more)

Skytt, Johanna

2012-01-01T23:59:59.000Z

382

Solar | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

Concentrating Solar Power Plant The Ivanpah Solar Energy Generating System has the capacity to generate 392 megawattsof clean electricity -- enough to power 94,400 average...

383

Application of solar energy.  

E-Print Network [OSTI]

??The purpose of the project is to learn the principle and application of solar energy and to know the situation of solar energy in China… (more)

Li, Jingcheng

2010-01-01T23:59:59.000Z

384

Solar Contractor Licensing  

Broader source: Energy.gov [DOE]

Hawaii offers several specialty licenses for solar contractors through Hawaii’s Department of Commerce and Consumer Affairs. The following specialty licenses are available: Solar Power Systems...

385

Your Solar Home  

Broader source: Energy.gov [DOE]

Solar Schoolhouse Education supplement for the Sacramento Bee to introduce solar to elementary school children and introduce the design and AD contest for local students.

386

Residential Solar Rights  

Broader source: Energy.gov [DOE]

In 2007, New Jersey enacted legislation preventing homeowners associations from prohibiting the installation of solar collectors on certain types of residential properties. The term "solar...

387

Department of Energy - Solar  

Broader source: Energy.gov (indexed) [DOE]

307 en Using Passive Solar Design to Save Money and Energy http:energy.govenergysaverarticlesusing-passive-solar-design-save-money-and-energy

388

Subsidizing Global Solar Power.  

E-Print Network [OSTI]

?? With national cuts on solar PV subsidies and the current “oversupply” of panels, the global solar market is clearly threatened by a contraction. Yet,… (more)

Arnesson, Daniel

2013-01-01T23:59:59.000Z

389

Concentrated Solar Power Generation.  

E-Print Network [OSTI]

??Solar power generation is the most promising technology to transfer energy consumption reliance from fossil fuel to renewable sources. Concentrated solar power generation is a… (more)

Jin, Zhilei

2013-01-01T23:59:59.000Z

390

Solar power satellites.  

E-Print Network [OSTI]

??During energy crisis at the end of the Sixties, a new idea to exploit solar energy arose: Solar Power Satellites. These satellites need a huge… (more)

Palmas, Alessandro

2013-01-01T23:59:59.000Z

391

Philadelphia, Pennsylvania: Solar in Action (Brochure), Solar...  

Broader source: Energy.gov (indexed) [DOE]

October 2011 Solar in Action Philadelphia was designated by the U.S. Department of Energy (DOE) on March 28, 2008, as Solar America City. At that time, the city presented a...

392

Solar in Cold, Cloudy Climates  

Broader source: Energy.gov [DOE]

Presentation delivered by Chuck Marken during the 2009 Northeastern Solar Cities Conference Solar Survey session.

393

Sandia National Laboratories: Solar Resource Assessment  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Tagged with: Energy * photovoltaic * Photovoltaics * PV * Renewable Energy * solar * Solar Energy * Solar Research * Solar Resource Assessment Comments are closed. Renewable...

394

Solar Radiative Heating in First Year Sea Ice M.J. McGuinness 1 , K.A. Landman 2 , H.J. Trodahl 3 , A.E. Pantoja 3  

E-Print Network [OSTI]

Solar Radiative Heating in First Year Sea Ice M.J. McGuinness 1 , K.A. Landman 2 , H.J. Trodahl 3 ice show daily oscillations consistent with heating by solar radiation. We present and solve a heat for solar power absorption based on Monte Carlo scatter­ ing simulations of penetrating photons. We observe

395

NREL is a national laboratory of the U.S. Department of Energy, Office of Energy Efficiency and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. Modelling Concentrating Solar Power  

E-Print Network [OSTI]

and Renewable Energy, operated by the Alliance for Sustainable Energy, LLC. Modelling Concentrating Solar Power with Thermal Energy Storage for Integration Studies Marissa Hummon 3rd International Solar Power Integration on the hourly and daily supply of solar energy. To optimize the use of this limited energy, CSP-TES must

396

Proceedings of Eurosun 2004, published by PSE GmbH, Freiburg, Germany, pp. (3) 916-920, 2004 HelioClim: a long-term database on solar radiation for  

E-Print Network [OSTI]

Clim: a long-term database on solar radiation for Europe and Africa S. Cros, M. Albuisson, M. Lefèvre, C-series of solar radiation data. Daily irradiation values are available over Europe, Africa and Atlantic Ocean stations only. INTRODUCTION Time series of solar radiation at ground level open the way to many

Paris-Sud XI, Université de

397

Estimation of height-dependent solar irradiation and application to the solar climate of Iran  

SciTech Connect (OSTI)

An explicitly height-dependent model has been used to estimate the solar irradiation over Iran which has a vast range of altitudes. The parameters of the model have been chosen on general grounds and not by parameters best fitting to any of the available measured irradiation data in Iran. The estimated global solar irradiation on the horizontal surface shows a very good agreement (4.1% deviation) with the 17-year long pyranometric measurements in Tehran, and also, is in good agreement with other, shorter available measured data. The entire data base of the Iranian meteorological stations have been used to establish a simple relation between the sunshine duration records and the cloud cover reports which can be utilized in solar energy estimations for sites with no sunshine duration recorders. Clear sky maps of Iran for direct solar irradiation on tracking, horizontal, and south-facing vertical planes are presented. The global solar irradiation map for horizontal surface with cloudiness is zoned into four irradiation zones. In about four-fifths of the land in Iran, the annual-mean daily global solar irradiation on horizontal surface ranges from 4.5 to 5.4 kWh/m[sup 2].

Samimi, J. (Sharif Univ of Technology, Tehran (Iran, Islamic Republic of))

1994-05-01T23:59:59.000Z

398

ENERGIA SOLAR Introduccio  

E-Print Network [OSTI]

ENERGIA SOLAR · Introducci´o · Usos t`ermics. Baixa temperatura · Sistemes de conversi´o t) Cuines Solars http://www.solarcooking.org #12;DESSALADORS SOLARS #12;APLICACIONS T`ERMIQUES BAIXA TEMPERATURA Col.lectors solars plans per a ACS #12;CONVERSI´O DIRECTA EN ELECTRICITAT C`el.lules i panells

Batiste, Oriol

399

SOLAR ENERGY Andrew Blakers  

E-Print Network [OSTI]

and conversion methods usually entail few environmental problems. Solar energy includes both direct radiationSOLAR ENERGY Andrew Blakers Director, Centre for Sustainable Energy Systems Australian National Solar energy is special. It is vast, ubiquitous and indefinitely sustainable. The solar resource

400

Solar Policy Environment: Houston  

Broader source: Energy.gov [DOE]

The City of Houston is committed to achieving a sustainable solar infrastructure through strategic partnerships that address market barriers for solar energy through the Houston Solar Initiative. The initiative is dedicated to this long-term goal while focusing on near- and mid-term results that go beyond demonstration solar projects.

Note: This page contains sample records for the topic "daily solar roof" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


401

Solar Policy Environment: Sacramento  

Broader source: Energy.gov [DOE]

The City of Sacramento and the greater Sacramento region is the home of a long standing history of commitment to solar. Sacramento Solar Access seeks to further widespread adoption of solar energy by addressing current market barriers and preparing, through design guidelines and education, the infrastructure that will optimize solar production in the future.

402

Solar Policy Environment: Boston  

Broader source: Energy.gov [DOE]

City of Boston’s objective in creating Solar Boston is to maximize solar technology’s role in the City’s sustainable development, educational and emergency preparedness policies. Solar Boston’s objective is the installation of solar technology on all feasible and appropriate locations throughout Boston.

403

Solar powered desalination system  

E-Print Network [OSTI]

USA, Jacksonville, FL Jacksonville Solar Energy Generation Facility Constructed Systems that produce electricity

Mateo, Tiffany Alisa

2011-01-01T23:59:59.000Z

404

Comparison of Historical Satellite-Based Estimates of Solar Radiation Resources with Recent Rotating Shadowband Radiometer Measurements: Preprint  

SciTech Connect (OSTI)

The availability of rotating shadow band radiometer measurement data at several new stations provides an opportunity to compare historical satellite-based estimates of solar resources with measurements. We compare mean monthly daily total (MMDT) solar radiation data from eight years of NSRDB and 22 years of NASA hourly global horizontal and direct beam solar estimates with measured data from three stations, collected after the end of the available resource estimates.

Myers, D. R.

2009-03-01T23:59:59.000Z

405

Prospects for Photovoltaics in Sunny and Arid Regions: A Solar Grand Plan for Chile  

E-Print Network [OSTI]

people17 million people GDP per capita $16,000 LCOE 3-56 ¢/kWh SIC Typical Daily LoadSING Typical Daily National Laboratory, 3Fundación Chile, 4University of Antofagasta, 5Solar Energy Research Center (SERC,000-40,000 2,000-14,000 2,000-21,000 302 323 442 Installed capacity of renewable energies 1236 [MW] Potential

406

The Impact of Above-Sheathing Ventilation on the Thermal and Moisture Performance of Steep-Slope Residential Roofs and Attics  

E-Print Network [OSTI]

France of the Building Technologies Program. The IrBCP project team members are Andre? Desjarlais, William Miller, Tom Petrie, Jan Kosny and Achilles Karagiozis, all of ORNL’s Buildings Envelope Program. The Metal Construction Association and its affiliate members.... Beal, D., and S. Chandra. 1995. “The Measured Summer Performance of Tile Roof Systems and Attic Ventilation Strategies in Hot Humid Climates.” In Proceedings of the Thermal Performance of the Exterior Envelopes of Buildings VI. U.S. DOE/ORNL...

Miller, W.; Karagiozis, A.; Wilson, J.

2006-01-01T23:59:59.000Z

407

Performance of powder-filled evacuated panel insulation in a manufactured home roof cavity: Tests in the Large Scale Climate Simulator  

SciTech Connect (OSTI)

A full-scale section of half the top of a single-wide manufactured home has been studied in the Large Scale Climate Simulator (LSCS) at the Oak Ridge National Laboratory. A small roof cavity with little room for insulation at the eaves is often the case with single-wide units and limits practical ways to improve thermal performance. The purpose of the current tests was to obtain steady-state performance data for the roof cavity of the manufactured home test section when the roof cavity was insulated with fiberglass batts, blown-in rock wool insulation or combinations of these insulations and powder-filled evacuated panel (PEP) insulation. Four insulation configurations were tested: (A) a configuration with two layers of nominal R{sub US}-7 h {center_dot} ft{sup 2} {center_dot} F/BTU (R{sub SI}-1.2 m{sup 2} {center_dot} K/W) fiberglass batts; (B) a layer of PEPs and one layer of the fiberglass batts; (C) four layers of the fiberglass batts; and (D) an average 4.1 in. (10.4 cm) thick layer of blown-in rock wool at an average density of 2.4 lb/ft{sup 3} (38 kg/m{sup 3}). Effects of additional sheathing were determined for Configurations B and C. With Configuration D over the ceiling, two layers of expanded polystyrene (EPS) boards, each about the same thickness as the PEPs, were installed over the trusses instead of the roof. Aluminum foils facing the attic and over the top layer of EPS were added. The top layer of EPS was then replaced by PEPs.

Petrie, T.W.; Kosny, J.; Childs, P.W.

1996-03-01T23:59:59.000Z

408

Solar Policy Environment: Pittsburgh  

Broader source: Energy.gov [DOE]

In this project, Pittsburgh plans to build on its reputation as a national leader in green practices. Its Solar America Cities project will develop a distributed approach to adoption of solar energy technologies. Pittsburgh’s partnership includes universities, non-profit organizations, and business, labor and foundation communities. The city plans to transform the solar energy market and stimulate early adoption of solar technology, to show that solar technology works in a northern city.

409

Boston Massachusetts: Solar in Action (Brochure), Solar America...  

Broader source: Energy.gov (indexed) [DOE]

Initiative) Solar installation goal: 25 megawatts (MW) cumulative installed solar capacity in the city by 2015 The reinvigorated Solar Boston Partnership builds on the work of...

410

Salt Lake City, Utah: Solar in Action (Brochure), Solar America...  

Broader source: Energy.gov (indexed) [DOE]

a lack of understanding about solar contributed to preventing the widespread adoption of solar energy in all markets. Salt Lake City's prior solar successes with support from...

411

San Francisco, California: Solar in Action (Brochure), Solar...  

Broader source: Energy.gov (indexed) [DOE]

San Francisco, California: Solar in Action (Brochure), Solar America Cities, Energy Efficiency & Renewable Energy (EERE) San Francisco, California: Solar in Action (Brochure),...

412

Portland, Oregon: Solar in Action (Brochure), Solar America Cities...  

Broader source: Energy.gov (indexed) [DOE]

Action (Brochure), Solar America Cities, Energy Efficiency & Renewable Energy (EERE) San Francisco, California: Solar in Action (Brochure), Solar America Cities, Energy Efficiency...

413

Solar heating system at Quitman County Bank, Marks, Mississippi. Final report  

SciTech Connect (OSTI)

Information is provided on the solar heating system installed in a single story wood frame, cedar exterior, sloped roof building, the Quitman County Bank, a branch of the First National Bank of Clarksdale, Mississippi. It is the first solar system in the geographical area and has promoted much interest. The system has on-site temperature and power measurements readouts. The 468 square feet of Solaron air flat plate collectors provide for 2000 square feet of space heating, an estimated 60% of the heating load. Solar heated air is distributed to the 235 cubic foot rock storage box or to the load (space heating) by a 960 cubic feet per minute air handler unit. A 7.5 ton Carrier air-to-air heat pump with 15 kilowatts of electric booster strips serve as a back-up (auxiliary) to the solar system. Motorized dampers control the direction of airflow and back draft dampers prevent thermal siphoning of conditioned air. The system was turned on in September 1979, and acceptance testing completed in February 1980. This is a Pon Cycle 3 Project with the Government sharing $13,445.00 of the $24,921 Solar Energy System installation cost.

None

1980-06-01T23:59:59.000Z

414

The technical viability of alternative blowing agents in polyisocyanurate roof insulation: A cooperative industry/government project  

SciTech Connect (OSTI)

This report is a summary of the cooperative industry/government program to establish the viability of alternative blowing agents to chlorofluorocarbons (CFCs). The project was initiated in 1989 following two workshops that focused on needed research on thermal insulation blown with substitutes for CFC-11 and CFC-12. The project is directed by a steering committee of representatives of the sponsors and of Oak Ridge National Laboratory (ORNL). The purpose of the project is to determine if the performance of polyisocyanurate (PIR) roof insulation foam boards blown with alternate agents differs from the performance of boards blown with CFC-1. This report describes apparent thermal conductivity (k) results obtained from field and laboratory tests from 1989 to 1992 on a set of experimental PIR laminate boardstock produced to evaluate the viability of alternative hydrochlorofluorocarbons (HCFCs) as blowing agents. All boardstock was manufactured from similar formulations that were not optimized for thermal performance. Commercial broadstock made in the future may differ in performance from this set. The PIR boards were prepared with CFC-11, HCFC-123, HCFC-141b, and 50/50 and 65/35 blends of HCFC-123/HCFC-141b.

Christian, J.E.; Courville, G.E.; Desjarlais, A.O.; Graves, R.S.; Linkous, R.L.; McElroy, D.L.; Weaver, F.J.; Wendt, R.L.; Yarbrough, D.W.

1993-06-01T23:59:59.000Z

415

Fuel Economy and Emissions Effects of Low Tire Pressure, Open Windows, Roof Top and Hitch-Mounted Cargo, and Trailer  

SciTech Connect (OSTI)

To quantify the fuel economy (FE) effect of some common vehicle accessories or alterations, a compact passenger sedan and a sport utility vehicle (SUV) were subjected to SAE J2263 coastdown procedures. Coastdowns were conducted with low tire pressure, all windows open, with a roof top or hitch-mounted cargo carrier, and with the SUV pulling an enclosed cargo trailer. From these coastdowns, vehicle dynamometer coefficients were developed which enabled the execution of vehicle dynamometer experiments to determine the effect of these changes on vehicle FE and emissions over standard drive cycles and at steady highway speeds. The FE penalty associated with the rooftop cargo box mounted on the compact sedan was as high as 25-27% at higher speeds, where the aerodynamic drag is most pronounced. For both vehicles, use of a hitch mounted cargo tray carrying a similar load resulted in very small FE penalties, unlike the rooftop cargo box. The results for the SUV pulling a 3500 pound enclosed cargo trailer were rather dramatic, resulting in FE penalties ranging from 30%, for the city cycle, to 50% at 80 mph, at which point significant CO generation indicated protective enrichment due to high load. Low tire pressure cases resulted in negligible to 10% FE penalty depending on the specific case and test point. Driving with all four windows open decreased FE by 4-8.5% for the compact sedan, and 1-4% for the SUV.

Thomas, John F [ORNL] [ORNL; Huff, Shean P [ORNL] [ORNL; West, Brian H [ORNL] [ORNL

2014-01-01T23:59:59.000Z

416

Solar Impulsive Energetic Electron Events  

E-Print Network [OSTI]

coronal mass ejections and solar energetic proton events, J.Voyager observations of solar wind proton temperature:1- 10Howard (2004), Variability of solar eruptions during cycle

Wang, Linghua

2009-01-01T23:59:59.000Z

417

2008 Solar Technologies Market Report  

E-Print Network [OSTI]

96 4.3.2 Customer Solar Leasefinancing, customer solar lease financing, property-assessedagreement (PPA), the solar lease, and property-assessed

Price, S.

2010-01-01T23:59:59.000Z

418

2008 Solar Technologies Market Report  

E-Print Network [OSTI]

Commission launched the California Solar Initiative (CSI), aenergy bond California Solar Initiative concentrating solarprograms, such as the California Solar Initiative (CSI) and

Price, S.

2010-01-01T23:59:59.000Z

419

Solar Easements and Rights Laws  

Broader source: Energy.gov [DOE]

Solar access provisions in the General Laws of Massachusetts allow for the creation of voluntary solar easements to protect solar exposure and authorizes zoning rules that prohibit unreasonable...

420

Utah Solar Outlook March 2010  

Broader source: Energy.gov [DOE]

This presentation provides an overview of Utah's solar market, policy initiatives, and progress to date on the Solar America Cities Project: Solar Salt Lake.

Note: This page contains sample records for the topic "daily solar roof" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


421

Solar Design Workbook  

SciTech Connect (OSTI)

This Solar Design Workbook presents solar building design applications for commercial buildir^s. The book is divided into four sections. The first section describes the variety of solar applications in buildings including conservation aspects, solar fundamentals, passive systems, active systems, daylighting, and other solar options. Solar system design evaluation techniques including considerations for building energy requirements, passive systems, active systems, and economics are presented in Section II. The third section attempts to assist the designer in the building design process for energy conservation and solar applications including options and considerations for pre-design, design, and post-design phases. The information required for the solar design proee^ has not been fully developed at this time. Therefore, Section III is incomplete, but an overview of the considerations with some of the design proces elements is presented. Section IV illustrates ease studies that utilize solar applications in the building design.

Franta, G.; Baylin, F.; Crowther, R.; Dubin, F.; Grace, A., Griffith, J.W.; Holtz, M.; Kutscher, C.; Nordham, D.; Selkowitz, S.; Villecco, M.

1981-06-01T23:59:59.000Z

422

Literature Review of Uncertainty of Analysis Methods (Cool Roofs), Report to the Texas Commission on Environmental Quality  

E-Print Network [OSTI]

of the Florida Solar Energy Center (FSEC), the Oak Ridge National Laboratory (ORNL), the National Renewal Energy Laboratory (NREL), the Lawrence Berkeley National Laboratory (LBNL), the American Council for an Energy Efficient Economy (ACEEE...

Haberl, J. S.; Cho, S.

2004-01-01T23:59:59.000Z

423

EA-1784: Fotowatio Nevada Solar, LLC's Apex Solar Power Project...  

Broader source: Energy.gov (indexed) [DOE]

84: Fotowatio Nevada Solar, LLC's Apex Solar Power Project in Clark County, NV EA-1784: Fotowatio Nevada Solar, LLC's Apex Solar Power Project in Clark County, NV July 1, 2010...

424

EIS-0454: Tonopah Solar Energy Crescent Dunes Solar Energy Project...  

Broader source: Energy.gov (indexed) [DOE]

EIS-0454: Tonopah Solar Energy Crescent Dunes Solar Energy Project in Nye County, NV EIS-0454: Tonopah Solar Energy Crescent Dunes Solar Energy Project in Nye County, NV Documents...

425

Daily HMS Extremes in Met Data - Hanford Site  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmospheric Optical Depth7-1D: Vegetation Proposed Newcatalyst phases onOrganizationElectronic2005-2007 BudgetFlight Planning andDaily

426

Property:DailyOpWaterUseConsumed | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy ResourcesLoadingPenobscot County, Maine:Plug PowerAddress JumpFloorAreaTotalDailyOpWaterUseConsumed Jump

427

Property:DailyOpWaterUseGross | Open Energy Information  

Open Energy Info (EERE)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE: Alternative Fuels Data Center Home Page on Google Bookmark EERE: Alternative Fuels Data CenterFranconia, Virginia: Energy ResourcesLoadingPenobscot County, Maine:Plug PowerAddress JumpFloorAreaTotalDailyOpWaterUseConsumed

428

Concentrating Solar Power: Best Practices Handbook for the Collection and Use of Solar Resource Data (CSP)  

SciTech Connect (OSTI)

As the world looks for low-carbon sources of energy, solar power stands out as the most abundant energy resource. Harnessing this energy is the challenge for this century. Photovoltaics and concentrating solar power (CSP) are two primary forms of electricity generation using sunlight. These use different technologies, collect different fractions of the solar resource, and have different siting and production capabilities. Although PV systems are most often deployed as distributed generation sources, CSP systems favor large, centrally located systems. Accordingly, large CSP systems require a substantial investment, sometimes exceeding $1 billion in construction costs. Before such a project is undertaken, the best possible information about the quality and reliability of the fuel source must be made available. That is, project developers need to have reliable data about the solar resource available at specific locations to predict the daily and annual performance of a proposed CSP plant. Without these data, no financial analysis is possible. This handbook presents detailed information about solar resource data and the resulting data products needed for each stage of the project.

Stoffel, T.; Renne, D.; Myers, D.; Wilcox, S.; Sengupta, M.; George, R.; Turchi, C.

2010-09-01T23:59:59.000Z

429

Energy Efficiency and Conservation Block Grant Program  

Broader source: Energy.gov (indexed) [DOE]

roof at Margaret Carpenter Recreation Center with a white membrane roof and install a solar photovoltaic system at City Hall, 4) install a solar photovoltaic system at...

430

Introduction Unlike most objects studied in astrophysics, the Sun has a considerable influence on our daily  

E-Print Network [OSTI]

and the health of satellites. It even appears that a major power outage in Canada was due to the effects of solar to variations in the solar energy output. Solar activity is believed to be closely related to the solar rotation, this is far from the case. One of the most obvious solar changes to affect us is the variation in the number

Schou, Jesper

431

Rooftop Solar Potential Distributed Solar Power in NW  

E-Print Network [OSTI]

1 Rooftop Solar Potential Distributed Solar Power in NW Massoud Jourabchi June 2013 1 Renewables;3 Regional Growth In Solar Energy Consumption Solar consumption both Thermal and PV h b t d i i lhas been on steady increase since early 1990s. From 2000-2010 Solar PV grow at annual rate of 13% and solar thermal

432

BIG BEAR SOLAR OBSERVATORY CENTER FOR SOLAR-TERRESTRIAL RESEARCH  

E-Print Network [OSTI]

BIG BEAR SOLAR OBSERVATORY CENTER FOR SOLAR-TERRESTRIAL RESEARCH Faculty Position in Solar Physics, New Jersey Institute of Technology A tenure track faculty position in solar physics is available of NJIT's program in solar physics, visit http://solar.njit.edu. Applicants are required to have a Ph

433

Solar Decathlon | Department of Energy  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

Solar Decathlon Solar Decathlon In the video above, Lakiya Culley talks about how her solar-powered, passive home, which was donated to Habitat for Humanity by a Solar Decathlon...

434

Plasmonic conversion of solar energy  

E-Print Network [OSTI]

Basic Research Needs for Solar Energy Utilization, BasicS. Pillai and M. A. Green, Solar Energy Materials and SolarPlasmonic conversion of solar energy César Clavero Plasma

Clavero, Cesar

2014-01-01T23:59:59.000Z

435

Pacific Northwest Solar Radiation Data  

E-Print Network [OSTI]

Pacific Northwest Solar Radiation Data UO SOLAR MONITORING LAB Physics Department -- Solar Energy Center 1274 University of Oregon Eugene, Oregon 97403-1274 April 1, 1999 #12;Hourly solar radiation data

Oregon, University of

436

Solar Resource Assessment  

SciTech Connect (OSTI)

This report covers the solar resource assessment aspects of the Renewable Systems Interconnection study. The status of solar resource assessment in the United States is described, and summaries of the availability of modeled data sets are provided.

Renne, D.; George, R.; Wilcox, S.; Stoffel, T.; Myers, D.; Heimiller, D.

2008-02-01T23:59:59.000Z

437

Solar | Department of Energy  

Broader source: Energy.gov (indexed) [DOE]

a solar energy system on a Habitat for Humanity home. GRID installed solar electric systems on 10 affordable homes developed by Habitat for Humanity in the Ivy City neighborhood...

438

Solar Construction Permitting Standards  

Broader source: Energy.gov [DOE]

Owners of solar photovoltaic (PV) systems and solar water heating systems in Arizona are required to obtain a building permit before their systems may be installed. Permits are handled at the...

439

Solar Construction Permitting Standards  

Broader source: Energy.gov [DOE]

Owners of solar photovoltaic (PV) systems and solar water heating systems in Colorado are required to obtain a building permit before their systems may be installed. Permits are handled at the...

440

Solar Thermoelectric Energy Conversion  

Broader source: Energy.gov (indexed) [DOE]

SOLID-STATE SOLAR-THERMAL ENERGY CONVERSION CENTER NanoEngineering Group Solar Thermoelectric Energy Conversion Gang Chen, 1 Daniel Kraemer, 1 Bed Poudel, 2 Hsien-Ping Feng, 1 J....

Note: This page contains sample records for the topic "daily solar roof" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


441

Solar Equipment Certification  

Broader source: Energy.gov [DOE]

Minnesota law requires that all active solar space-heating and water-heating systems, sold, offered for sale, or installed on residential and commercial buildings in the state meet Solar Rating and...

442

Solar Contractor Licensing  

Broader source: Energy.gov [DOE]

Until 1994, Florida offered limited specialty licenses for residential solar hot water and pool heating, as well a general solar contractor's license. These specialty licenses have not been issued...

443

Solar Contractor Licensing  

Broader source: Energy.gov [DOE]

The Arizona Registrar of Contractors does not offer a general solar electric contractor license, but the state's C-11/L-11 electrical license covers solar electric installations. C-11 licenses are...

444

CT Solar Loan  

Broader source: Energy.gov [DOE]

The Clean Energy Finance and Investment Authority is offering a pilot loan program, CT Solar Loan, to provide homeowners with 15-year loans for solar PV equipment. The loans are administered...

445

CALIFORNIA SOLAR DATA MANUAL  

E-Print Network [OSTI]

SOLA DATA MANUAL Jan Paul Berdahl, Donald Grether, Marlo Martin, and Michael Wahlig ronment Division Solar Energy

Berdahl, P.

2010-01-01T23:59:59.000Z

446

In-situ and thin-specimen aging of experimental polyisocyanurate roof insulation foamed with alternative blowing agents  

SciTech Connect (OSTI)

This paper reports apparent thermal conductivity (k) values from field and laboratory aging tests on a set of industry-produced, experimental polyisocyanurate (PIR) laminated boardstock foamed with hydrochlorofluorocarbons (HCFCs) as alternatives to chlorofluorocarbon (CFC). The PIR boards were blown with five gases: CFC-11, HCFC-123, HCFC-14lb, and 50/50 and 65/35 blends of HCFC-123/HCFC-14lb. The k-values were determined from 0 to 50{degree}C (30 to 120{degree}F) using techniques that meet ASTM C 114 (Thin Heater Apparatus) and ASTM C 518 (Heat Flow Meter Apparatus). Results on laminate boards with facers provide an independent laboratory check on the increase in k observed for field exposure in the ORNL Roof Thermal Research Apparatus (RTRA). The observed laboratory increase in k was between 8% and 11% for a 240 day field exposure in the RTRA. A thin-specimen aging procedure established the long-term thermal resistance of gas-filled foams. Thin specimens were planed from the industry-produced boardstock foams and aged at 24 and 65{degree}C (75{degree}F and 150{degree}F) for up to 300 days. An exponential dependency of k with the quantity (diffusion coefficient X time){sup {1/2}}/ thickness, provide effective diffusion coefficients for air components into the foams and blowing agent out of the foams. The foams blown with alternative blowing agents exhibited k-values 3 to 16% (average 9.4%) above CFC-11 foams under similar conditions. Field exposures were conducted on specimens under single ply EPDM membranes in the RTRA for over 400 days. Hourly averages of panel temperature and heat flux were analyzed to obtain K as a function of mean temperature on a week by week basis. The relative performance of test specimens of HCFC-14B under a black and under a white membrane is reported. 29 refs., 10 figs., 10 tabs.

Christian, J.E.; Courville, G.E.; Graves, R.S.; Linkous, R.L.; McElroy, D.L.; Weaver, F.J.; Yarbrough, D.W.

1991-01-01T23:59:59.000Z

447

Your Community With Solar  

E-Print Network [OSTI]

Powering Your Community With Solar: Overcoming Market and Implementation Barriers Lessons from successful Solarize campaigns help communities seize volume discounts through collective purchasing The first Solarize program began in Portland, Oregon, as a grassroots campaign for collective SunShot will work

448

Cool Earth Solar  

SciTech Connect (OSTI)

In a public-private partnership that takes full advantage of the Livermore Valley Open Campus (LVOC) for the first time, Sandia National Laboratories and Cool Earth Solar have signed an agreement that could make solar energy more affordable and accessible. In this piece, representatives from Sandia, Cool Earth Solar, and leaders in California government all discuss the unique partnership and its expected impact.

Lamkin, Rob; McIlroy, Andy; Swalwell, Eric; Rajan, Kish

2013-04-22T23:59:59.000Z

449

Solar Policy Environment: Tucson  

Broader source: Energy.gov [DOE]

The Tucson Solar Initiative seeks to institutionalize the value of nine years of solar energy development experience, secure the promise of renewable energy investment funds, facilitate the installation of a significant volume of installations in the community and establish a mechanism for sustainable solar integration for the future.

450

Standard Solar Model  

SciTech Connect (OSTI)

Solar models are important in our understanding of stars and stellar evolution. Solar models have been constructed using different methods. In this work, a solar model will be built using the fitting method. The model will incorporate the most recent input data. The model will be evolved to the current epoch starting from the zero-age main sequence model.

Loong, Lim Yaw; Yusof, Norhasliza; Kassim, Hasan Abu [Physics Department, Faculty of Science, University of Malaya, 50603 Kuala Lumpur (Malaysia)

2008-05-20T23:59:59.000Z

451

Solar Policy Environment: Milwaukee  

Broader source: Energy.gov [DOE]

The City of Milwaukee’s SAC Initiative, Milwaukee Shines, works to reduce informational, economic and procedural barriers to the widespread adoption of solar energy systems. While the City of Milwaukee and its partners have demonstrated commitment and experience in implementing solar technologies, Milwaukee Shines aims to enhance these efforts and make solar a viable alternative throughout the region.

452

Digital Solar Explorer Introduction  

E-Print Network [OSTI]

Digital Solar Explorer Introduction Description Content Design Physical Interaction An element of interactivity is added to the Digital Solar Explorer exhibit through the use of a controller. Simple, intuitive the learning process, which is the number one goal of the Digital Solar Explorer exhibit. Essentially, the user

Zanibbi, Richard

453

Cool Earth Solar  

ScienceCinema (OSTI)

In a public-private partnership that takes full advantage of the Livermore Valley Open Campus (LVOC) for the first time, Sandia National Laboratories and Cool Earth Solar have signed an agreement that could make solar energy more affordable and accessible. In this piece, representatives from Sandia, Cool Earth Solar, and leaders in California government all discuss the unique partnership and its expected impact.

Lamkin, Rob; McIlroy, Andy; Swalwell, Eric; Rajan, Kish

2014-02-26T23:59:59.000Z

454

7Name ________________________________ Solar Electricity.  

E-Print Network [OSTI]

be attached directly to the outer surface of a satellite, or can be found on `solar panels' that the satellite. If the satellite is not big enough, additional solar panels may be needed to supply the electricity) The solar cells produce 0.03 watts per square cm, so the power available is 39819 x 0.03 = 1194 watts

455

SOLAR ENERGY POTENTIALS  

E-Print Network [OSTI]

In recent years solar energy has experienced phenomenal growth due to the technological improvements resulting in cost reductions and also governments policies supportive of renewable energy development and utilization. In this paper we will present possibilities for development and deployment of solar energy. We will use Kosovo to compare the existing power production potential and future possible potential by using solar energy.

Loreta N. Gashi; Sabedin A. Meha; Besnik A. Duriqi; Fatos S. Haxhimusa

456

Solar forecasting review  

E-Print Network [OSTI]

Quantifying PV power output variability,” Solar Energy, vol.each solar sen at node i, P(t) the total power output of theSolar Forecasting Historically, traditional power generation technologies such as fossil and nu- clear power which were designed to run in stable output

Inman, Richard Headen

2012-01-01T23:59:59.000Z

457

Conservation and solar guidelines  

SciTech Connect (OSTI)

Guidelines are given for selecting R-values and infiltration levels, and determining the size of the solar collection area for passive solar buildings. The guidelines are based on balancing the incremental cost/benefit of conservation and passive solar strategies. Tables are given for 90 cities in the US and the results are also displayed on maps. An example is included.

Balcomb, J.D.

1983-01-01T23:59:59.000Z

458

Petrovay: Solar physics Solar wind and heliosphere THE SOLAR WIND AND THE HELIOSPHERE  

E-Print Network [OSTI]

with high first ionization potential are underrepresented in solar wind. Probable cause: ambipolar diffusion: Solar physics Solar wind and heliosphere Potential explanation: belt due to higher pressurePetrovay: Solar physics Solar wind and heliosphere THE SOLAR WIND AND THE HELIOSPHERE 1951: First

Petrovay, KristĂłf

459

Magnetohydrodynamics and Solar Physics  

E-Print Network [OSTI]

In this short review, I present some of the recent progresses on the pending questions of solar physics. These questions let us revisit the solar wind, the solar dynamo problem, the dynamics of the photosphere and finally have a glimpse at other solar type stars. Discussing the use of direct numerical simulations in solar physics, I show that the full numerical calculation of the flow in a single supergranule would require more electric power than the luminosity of the sun itself with present computer technology.

Rieutord, Michel

2014-01-01T23:59:59.000Z

460

Photovoltaic solar concentrator  

DOE Patents [OSTI]

A photovoltaic solar concentrator is disclosed with one or more transverse-junction solar cells (also termed point contact solar cells) and a lens located above each solar cell to concentrate sunlight onto the solar cell to generate electricity. Piezoelectric actuators tilt or translate each lens to track the sun using a feedback-control circuit which senses the electricity generated by one or more of the solar cells. The piezoelectric actuators can be coupled through a displacement-multiplier linkage to provide an increased range of movement of each lens. Each lens in the solar concentrator can be supported on a frame (also termed a tilt plate) having three legs, with the movement of the legs being controlled by the piezoelectric actuators.

Nielson, Gregory N.; Okandan, Murat; Resnick, Paul J.; Cruz-Campa, Jose Luis

2012-12-11T23:59:59.000Z

Note: This page contains sample records for the topic "daily solar roof" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


461

Quality site seasonal report, Tucson Job Corps Center, SFBP (Solar in Federal Buildings Program) 1751, November 1984 through July 1985  

SciTech Connect (OSTI)

The active solar Domestic Hot Water (DHW) system at the Tucson Job Corps Center was designed and constructed as part of the Solar in Federal Buildings Program (SFBP). This retrofitted system is one of eight of the systems in the SFBP selected for quality monitoring. The purpose of this monitoring effort is to document the performance of quality state-of-the-art solar systems in large Federal buildings. The systems are unique prototypes. Design errors and system faults discovered during the monitoring period could not always be corrected. Therefore, the aggregated overall performance is often considerably below what might be expected had similar systems been constructed consecutively with each repetition incorporating corrections and improvements. The solar collector system is installed on a two story dormitory at the Job Corps Center. The solar system preheats hot water for about two hundred students. The solar system provided about 50% of the energy needed for water heating in the winter and nearly 100% of the water heating needs in the summer. There are about 70,000 gallons of water used per month. There are seventy-nine L.O.F. panels or 1659 square feet of collectors (1764 square feet before freeze damage occurred) mounted in two rows on the south facing roof. Collected solar energy is stored in the 2200-gallon storage tank. The control system is by Johnson Controls. City water is piped directly to the storage tank and is circulated in the collectors. Freeze protection is provided by recirculation of storage water. There is an auxiliary gas fired boiler and 750 gallon DHW storage tank to provide backup for the solar system. Highlights of the performance monitoring from the solar collection system at the Tucson Job Corps Center during the November 1984 through July 1985 monitoring period are presented in this report.

Logee, T.L.

1987-10-15T23:59:59.000Z

462

California Solar Initiative- Solar Thermal Program  

Broader source: Energy.gov [DOE]

'''''Note: This program was modified by AB 2249, signed in September 2012. The bill allows for non-residential solar pool heating to qualify for incentives, and requires program administrators to...

463

Homebuyer Solar Option and Solar Offset Program  

Broader source: Energy.gov [DOE]

[http://www.energy.ca.gov/2009-SOPR-1/documents/sb_1_bill_20060821_chapte... Senate Bill 1 of 2006], which established the statewide California Solar Initiative, also required the California Energy...

464

Renewable Energy Ready Home Solar Photovoltaic Specifications...  

Broader source: Energy.gov (indexed) [DOE]

Renewable Energy Ready Home Solar Photovoltaic Specifications Renewable Energy Ready Home Solar Photovoltaic Specifications Solar Photovoltaic Specification, Checklist and Guide,...

465

Solar Thermoelectric Energy Conversion | Department of Energy  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Solar Thermoelectric Energy Conversion Solar Thermoelectric Energy Conversion Efficiencies of different types of solar thermoelectric generators were predicted using theoretical...

466

Helioseismology and Solar Abundances  

E-Print Network [OSTI]

Helioseismology has allowed us to study the structure of the Sun in unprecedented detail. One of the triumphs of the theory of stellar evolution was that helioseismic studies had shown that the structure of solar models is very similar to that of the Sun. However, this agreement has been spoiled by recent revisions of the solar heavy-element abundances. Heavy element abundances determine the opacity of the stellar material and hence, are an important input to stellar model calculations. The models with the new, low abundances do not satisfy helioseismic constraints. We review here how heavy-element abundances affect solar models, how these models are tested with helioseismology, and the impact of the new abundances on standard solar models. We also discuss the attempts made to improve the agreement of the low-abundance models with the Sun and discuss how helioseismology is being used to determine the solar heavy-element abundance. A review of current literature shows that attempts to improve agreement between solar models with low heavy-element abundances and seismic inference have been unsuccessful so far. The low-metallicity models that have the least disagreement with seismic data require changing all input physics to stellar models beyond their acceptable ranges. Seismic determinations of the solar heavy-element abundance yield results that are consistent with the older, higher values of the solar abundance, and hence, no major changes to the inputs to solar models are required to make higher-metallicity solar models consistent with helioseismic data.

Sarbani Basu; H. M. Antia

2007-11-28T23:59:59.000Z

467

Petrovay: Solar physics The solar cycle ACTIVE REGIONS  

E-Print Network [OSTI]

Petrovay: Solar physics The solar cycle ACTIVE REGIONS Large scale (up to 100 Mm) anomalies in the structure and radiation of the solar atmosphere. Photosphere : AR = cluster of strong magnetic flux tubes of facular points. Filamentary structure due to supergranulation. #12;Petrovay: Solar physics The solar cycle

Petrovay, KristĂłf

468

Rooftop Solar Potential Distributed Solar Power in NW  

E-Print Network [OSTI]

6/19/2013 1 Rooftop Solar Potential Distributed Solar Power in NW Massoud Jourabchi June 2013 1 in 2012 4 #12;6/19/2013 3 Regional Growth In Solar Energy Consumption Solar consumption both Thermal and PV h b t d i i lhas been on steady increase since early 1990s. From 2000-2010 Solar PV grow

469

Connectable solar air collectors Solar Energy Centre Denmark  

E-Print Network [OSTI]

Connectable solar air collectors Solar Energy Centre Denmark Danish Technological Institute SEC-R-22 #12;Connectable solar air collectors Søren �stergaard Jensen Miroslav Bosanac Solar Energy Centre Søren �stergaard Jensen and Miroslav Bosanac Solar Energy Centre, Danish Technological Institute

470

Connectable solar air collectors Solar Energy Centre Denmark  

E-Print Network [OSTI]

Connectable solar air collectors Solar Energy Centre Denmark Danish Technological Institute SEC-R-22 #12;Connectable solar air collectors Søren �stergaard Jensen Miroslav Bosanac Solar Energy Centre for renewable energy of the Danish Energy Agency. The project group behind the project was: Solar Energy Centre

471

SELECTIVE ABSORBER COATED FOILS FOR SOLAR COLLECTORS  

E-Print Network [OSTI]

fabrication of solar collector panels. adhesives and bondingdirectly to solar collector panels. the solar selectivefabrication of solar collector panels. However, the finish

Lampert, Carl M.

2013-01-01T23:59:59.000Z

472

ANALYSIS OF THE CALIFORNIA SOLAR RESOURCE  

E-Print Network [OSTI]

NEEDS FOR SOLAR RADIATION DATA SUMMARY AND DESCRIPTION OFSOURCES OF SOLAR RADIATION DATA CALI FORN IA SOLAR DATA MANNEED FOR SOLAR RADIATION DATA - Made direct contacts with

Berdahl, P.

2011-01-01T23:59:59.000Z

473

ECOLOGICAL CONSIDERATIONS OF THE SOLAR ALTERNATIVE  

E-Print Network [OSTI]

et al. , April 1975. 4. Solar Thermal Conversion Missionof.Several Central Reveiver Solar Thermal Power Plant Designterm solar energy are: Included solar thermal conversion to

Davidson, M.

2010-01-01T23:59:59.000Z

474

Solar opacities constrained by solar neutrinos and solar oscillations  

SciTech Connect (OSTI)

This review discusses the current situation for opacities at the solar center, the solar surface, and for the few million kelvin temperatures that occur below the convection zone. The solar center conditions are important because they are crucial for the neutrino production, which continues to be predicted about 4 times that observed. The main extinction effects there are free-free photon absorption in the electric fields of the hydrogen, helium and the CNO atoms, free electron scattering of photons, and the bound-free and bound-bound absorption of photons by iron atoms with two electrons in the 1s bound level. An assumption that the iron is condensed-out below the convection zone, and the opacity in the central regions is thereby reduced, results in about a 25 percent reduction in the central opacity but only a 5 percent reduction at the base of the convection zone. Furthermore, the p-mode solar oscillations are changed with this assumption, and do not fit the observed ones as well as for standard models. A discussion of the large effective opacity reduction by weakly interacting massive particles also results in poor agreement with observed p-mode oscillation frequencies. The much larger opacities for the solar surface layers from the Los Alamos Astrophysical Opacity Library instead of the widely used Cox and Tabor values show small improvements in oscillation frequency predictions, but the largest effect is in the discussion of p-mode stability. Solar oscillation frequencies can serve as an opacity experiment for the temperatures and densities, respectively, of a few million kelvin and between 0.1 and 10 g/cm/sup 3/. Current oscillation frequency calculations indicate that possibly the Opacity Library values need an increase of typically 15 percent just at the bottom of the convection zone at 3 /times/ 10/sup 6/K. 41 refs., 15 figs., 1 tab.

Cox, A.N.

1989-08-15T23:59:59.000Z

475

Roofing Moisture Tolerance  

Broader source: All U.S. Department of Energy (DOE) Office Webpages (Extended Search)

AFDC Printable Version Share this resource Send a link to EERE: Alternative Fuels Data Center Home Page to someone by E-mail Share EERE: Alternative Fuels Data Center Home Page on Facebook Tweet about EERE: Alternative Fuels Data Center Home Page on Twitter Bookmark EERE:1 First Use of Energy for All Purposes (Fuel and Nonfuel),Feet) Year Jan Feb Mar Apr MayAtmosphericNuclear Security Administration the1 -the Mid-Infrared0 Resource ProgramEnergyMaterials: Sulfur K-edge XANESMoisture

476

The Solar Argon Abundance  

E-Print Network [OSTI]

The solar argon abundance cannot be directly derived by spectroscopic observations of the solar photosphere. The solar Ar abundance is evaluated from solar wind measurements, nucleosynthetic arguments, observations of B stars, HII regions, planetary nebulae, and noble gas abundances measured in Jupiter's atmosphere. These data lead to a recommended argon abundance of N(Ar) = 91,200(+/-)23,700 (on a scale where Si = 10^6 atoms). The recommended abundance for the solar photosphere (on a scale where log N(H) = 12) is A(Ar)photo = 6.50(+/-)0.10, and taking element settling into account, the solar system (protosolar) abundance is A(Ar)solsys = 6.57(+/-)0.10.

Katharina Lodders

2007-10-24T23:59:59.000Z

477

Solar Chemical Peculiarities?  

E-Print Network [OSTI]

Several investigations of FGK stars in the solar neighborhood have suggested that thin-disk stars with an iron abundance similar to the Sun appear to show higher abundances of other elements, such as silicon, titanium, or nickel. Offsets could arise if the samples contain stars with ages, mean galactocentric distances, or kinematics, that differ on average from the solar values. They could also arise due to systematic errors in the abundance determinations, if the samples contain stars that are different from the Sun regarding their atmospheric parameters. We re-examine this issue by studying a sample of 80 nearby stars with solar-like colors and luminosities. Among these solar "analogs", the objects with solar iron abundances exhibit solar abundances of carbon, silicon, calcium, titanium and nickel.

Carlos Allende Prieto

2006-12-08T23:59:59.000Z

478

Solar Decathlon 2005  

SciTech Connect (OSTI)

Solar Decathlon 2005 is a U.S. Department of Energy and National Renewable Energy Laboratory competition involving 19 colleges and universities from the United States, Canada, and Spain. These teams will compete to design, build, and demonstrate solar homes. In fall 2005, teams will transport their competition solar houses to Washington, D.C., where they will construct a solar village on the National Mall. When the houses are assembled, the teams will compete against each other in 10 contests (hence, a decathlon) for about a week. The contests range from design to comfort to energy performance. Each team must provide an aesthetically pleasing entry that produces sufficient solar energy for space conditioning, hot water, lighting, appliances, and an electric car. The Solar Decathlon is co-sponsored by BP, The Home Depot, the American Institute of Architects, the National Association of Home Builders, and the DIY Network. For more information, visit the Web site at www.solardecathlon.org.

Warner, C.; Nahan, R.; King, R.

2005-01-01T23:59:59.000Z

479

Solar thermal aircraft  

DOE Patents [OSTI]

A solar thermal powered aircraft powered by heat energy from the sun. A heat engine, such as a Stirling engine, is carried by the aircraft body for producing power for a propulsion mechanism, such as a propeller. The heat engine has a thermal battery in thermal contact with it so that heat is supplied from the thermal battery. A solar concentrator, such as reflective parabolic trough, is movably connected to an optically transparent section of the aircraft body for receiving and concentrating solar energy from within the aircraft. Concentrated solar energy is collected by a heat collection and transport conduit, and heat transported to the thermal battery. A solar tracker includes a heliostat for determining optimal alignment with the sun, and a drive motor actuating the solar concentrator into optimal alignment with the sun based on a determination by the heliostat.

Bennett, Charles L. (Livermore, CA)

2007-09-18T23:59:59.000Z

480

Solar Policy Environment: Philadelphia  

Broader source: Energy.gov [DOE]

The project will identify promising locations for photovoltaic installations and create a roadmap for commercial and residential system developers. The roadmap, published as the Solar Developers Guide to Philadelphia, will be used to promote and attract solar energy investment. Philadelphia’s long-term goal for solar energy is to fully utilize the potential of solar energy to safely, reliably, and cost-effectively displace the use of energy generated by fossil fuels. To achieve its solar energy goals, the City of Philadelphia must add large commercial scale (> 500 kW) solar installations to its ongoing efforts on the smaller scale (we note that a new 1 MW PV installation will be installed at the Philadelphia Navy Yard by the end of 2008).

Note: This page contains sample records for the topic "daily solar roof" from the National Library of EnergyBeta (NLEBeta).
While these samples are representative of the content of NLEBeta,
they are not comprehensive nor are they the most current set.
We encourage you to perform a real-time search of NLEBeta
to obtain the most current and comprehensive results.


481

Ashland, Orgen's solar strategy  

SciTech Connect (OSTI)

The conceptualization, implementation, and experiences of a small southern Oregon community in attempting to increase the energy efficiency of new residential developments is outlined. The two main ordinances used are (1) a city-wide solar access ordinance, which establishes a special solar setback in the city, and (2) a new development code for housing, which provides for powerful incentives for passive solar housing. Successes and insights gained from the experience are discussed.

Fegonese, J.A.

1981-01-01T23:59:59.000Z

482

for doubling solar panel  

E-Print Network [OSTI]

An outline for doubling solar panel efficiency C o l o ra do S c ho o l of M i ne s Ma g a z i ne Take a look at a solar panel on a sunny Colorado day and, if you're like most people, you won't see physics professor and solar energy researcher, who admits to checking out his panels and their energy

483

Solar Policy Environment: Seattle  

Broader source: Energy.gov [DOE]

The objective of the Emerald City Solar Initiative is to overcome the barriers to widespread deployment of solar energy technology, dramatically increasing residential, commercial, City-owned, and community-scale solar energy use. The City has assembled a strong team of partners that have proven track records in the fields of public planning, renewable energy resource mapping, financial analysis, site analysis, education and outreach, policy analysis and advocacy, community organizing and renewable energy project development.

484

Heterojunction solar cell  

DOE Patents [OSTI]

A high-efficiency single heterojunction solar cell is described wherein a thin emitter layer (preferably Ga[sub 0.52]In[sub 0.48]P) forms a heterojunction with a GaAs absorber layer. The conversion efficiency of the solar cell is at least 25.7%. The solar cell preferably includes a passivating layer between the substrate and the absorber layer. An anti-reflection coating is preferably disposed over the emitter layer. 1 fig.

Olson, J.M.

1994-08-30T23:59:59.000Z

485

Solar radiation intensity calculations  

E-Print Network [OSTI]

SOLAR RADIATION INTENSITY CALCULATIONS A Thesis by RANDOLPH STEVEN LEVINE Submitted to the Graduate College of Texas A&M University in partia'l fulfillment of the requirement for the degree of MASTER OF SCIENCE December 1978 Major Subject...: Physics SOLAR RADIATION INTENSITY CALCULATIONS A Thesis by RANDOLPH STEVEN LEVINE Approved as to style and content by: (Chairman of Committee) (Member) (Member) ( member) (Head of Department) December 1978 f219 037 ABSTRACT Solar Radiation...

Levine, Randolph Steven

1978-01-01T23:59:59.000Z

486

Solar selective absorption coatings  

DOE Patents [OSTI]

A new class of solar selective absorption coatings are disclosed. These coatings comprise a structured metallic overlayer such that the overlayer has a sub-micron structure designed to efficiently absorb solar radiation, while retaining low thermal emissivity for infrared thermal radiation. A sol-gel layer protects the structured metallic overlayer from mechanical, thermal, and environmental degradation. Processes for producing such solar selective absorption coatings are also disclosed.

Mahoney, Alan R. (Albuquerque, NM); Reed, Scott T. (Albuquerque, NM); Ashley, Carol S. (Albuquerque, NM); Martinez, F. Edward (Horseheads, NY)

2003-10-14T23:59:59.000Z

487

Solar selective absorption coatings  

DOE Patents [OSTI]

A new class of solar selective absorption coatings are disclosed. These coatings comprise a structured metallic overlayer such that the overlayer has a sub-micron structure designed to efficiently absorb solar radiation, while retaining low thermal emissivity for infrared thermal radiation. A sol-gel layer protects the structured metallic overlayer from mechanical, thermal, and environmental degradation. Processes for producing such solar selective absorption coatings are also disclosed.

Mahoney, Alan R. (Albuquerque, NM); Reed, Scott T. (Albuquerque, NM); Ashley, Carol S. (Albuquerque, NM); Martinez, F. Edward (Horseheads, NY)

2004-08-31T23:59:59.000Z

488

Conservation and solar guidelines  

SciTech Connect (OSTI)

Guidelines are given for selecting R-values and infiltration levels, and determining the size of the solar collection area for passive solar buildings. The guidelines are based on balancing the incremental cost/benefit of conservation and passive solar strategies. Tables are given for 90 cities in the United States and the results are also displayed on maps. The procedures are developed in an appendix, which gives the cost assumptions used and explains how to develop different guidelines for different costs.

Balcomb, J.D.

1986-01-01T23:59:59.000Z

489

Some notes concerning the prediction of the amplitude of the two solar activity cycles  

E-Print Network [OSTI]

The parameter G, which is determined from the general number of sunspots groups Ng according to the daily observations G=Sum(1/Ng)^2, is offered. This parameter is calculated for the days when there is at least one sunspots group. It characterizes the minimum epoch solar activity. Parameter G mounts to the maximum during the epoch close to the minimal activity of sunspots. According too the data of the sequence of sunspots group in Greenwich-USAF/NOAA observatory format, observation data of Kislovodsk solar station and also daily Wolf number the changes of parameter G during 100 years were reconstructed. It is demonstrated in the paper that parameter G's amplitude in minimal solar activity n is linked with the sunspot cycle's amplitude Wn+1. The 24th activity cycle prediction is calculated, which makes W24=135(+/-12).

A. G. Tlatov

2007-06-12T23:59:59.000Z

490

Solar Power Purchase Agreements  

Office of Energy Efficiency and Renewable Energy (EERE) Indexed Site

Solar Power Purchase Agreements Brian Millberg | Energy Manager, City of Minneapolis Direct Ownership * Financial: Even at 3kW installed cost, simple payback is 18 years (initial...

491

Solar Heating in Uppsala.  

E-Print Network [OSTI]

?? The housing corporation Uppsalahem has installed asolar heating system in the neighbourhood Haubitsen,which was renovated in 2011. This report examineshow much energy the solar… (more)

Blomqvist, Emelie; Häger, Klara

2012-01-01T23:59:59.000Z

492

Concentrated Solar Thermoelectric Power  

Broader source: Energy.gov [DOE]

This presentation was delivered at the SunShot Concentrating Solar Power (CSP) Program Review 2013, held April 23–25, 2013 near Phoenix, Arizona.

493

Long Island Solar Farm  

SciTech Connect (OSTI)

The Long Island Solar Farm (LISF) is a remarkable success story, whereby very different interest groups found a way to capitalize on unusual circumstances to develop a mutually beneficial source of renewable energy. The uniqueness of the circumstances that were necessary to develop the Long Island Solar Farm make it very difficult to replicate. The project is, however, an unparalleled resource for solar energy research, which will greatly inform large-scale PV solar development in the East. Lastly, the LISF is a superb model for the process by which the project developed and the innovation and leadership shown by the different players.

Anders, R.

2013-05-01T23:59:59.000Z

494

Prison Solar Project  

Broader source: Energy.gov [DOE]

Presentation covers the Prison Solar Project for the Federal Utility Partnership Working Group (FUPWG) meeting, held on November 18-19, 2009.

495

Deed Restrictions for Solar  

Broader source: Energy.gov [DOE]

This report summarizes the efforts made to address Task 3 - Examples of Residential Deed Restrictions Allowing Solar. The focus of the study is on communities surrounding Houston, Texas.

496

Flexible Assembly Solar Technology  

Broader source: Energy.gov (indexed) [DOE]

2007-2010 BrightSource Energy, Inc. All rights reserved. 1 Flexible Assembly Solar Technology Binyamin Koretz Director, Strategic Planning & IP 2 Proprietary &...

497

Passive solar technology  

SciTech Connect (OSTI)

The present status of passive solar technology is summarized, including passive solar heating, cooling and daylighting. The key roles of the passive solar system designer and of innovation in the building industry are described. After definitions of passive design and a summary of passive design principles are given, performance and costs of passive solar technology are discussed. Passive energy design concepts or methods are then considered in the context of the overall process by which building decisions are made to achieve the integration of new techniques into conventional design. (LEW).

Watson, D

1981-04-01T23:59:59.000Z

498

Passive solar design handbook  

SciTech Connect (OSTI)

The Passive Solar Design Handbook, Volume Three updates Volume Two by presenting extensive new data on the optimum mix of conservation and solar direct gain, sunspaces, thermal storage walls, and solar radiation. The direct gain, thermal storage wall, and solar radiation data are greatly expanded relative to the Volume 2 coverage. The needed flexibility to analyze a variety of system designs is accommodated by the large number of reference designs to be encompassed - 94 in contrast to 6 in Volume two - and the large amount of sensitivity data for direct gain and sunspace systems - approximately 1100 separate curves.

Jones, R.W.

1981-01-01T23:59:59.000Z

499

Solar Contractor Licensing  

Broader source: Energy.gov [DOE]

Utah's Division of Occupational and Professional Licensing requires installers of solar energy systems to be licensed contractors. General electrical contractors carrying an S200 license are...

500

Scattering Solar Thermal Concentrators  

Broader source: Energy.gov (indexed) [DOE]

is a rendering of a scattering solar concentrator. Light collected by a cylindrical Fresnel lens is focused within a curved glass "guide" sheet, where it is redirected into...