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Title: Researching Complex Heat, Air and Moisture Interactions for a Wide-Range of Building Envelope Systems and Environmental Loads

Abstract

This document serves as the final report documenting work completed by Oak Ridge National Laboratory (ORNL) and the Fraunhofer Institute in Building Physics (Holzkirchen, Germany) under an international CRADA No. 0575 with Fraunhofer Institute of Bauphysics of the Federal Republic of Germany for Researching Complex Heat, Air and Moisture Interactions for a Wide Range of Building Envelope Systems and Environmental Loads. This CRADA required a multi-faceted approach to building envelope research that included a moisture engineering approach by blending extensive material property analysis, laboratory system and sub-system thermal and moisture testing, and advanced moisture analysis prediction performance. The Participant's Institute for Building physics (IBP) and the Contractor's Buildings Technology Center (BTC) identified potential research projects and activities capable of accelerating and advancing the development of innovative, low energy and durable building envelope systems in diverse climates. This allowed a major leverage of the limited resources available to ORNL to execute the required Department of Energy (DOE) directives in the area of moisture engineering. A joint working group (ORNL and Fraunhofer IBP) was assembled and a research plan was executed from May 2000 to May 2005. A number of key deliverables were produced such as adoption of North American loading intomore » the WUFI-software. in addition the ORNL Weather File Analyzer was created and this has been used to address environmental loading for a variety of US climates. At least 4 papers have been co-written with the CRADA partners, and a chapter in the ASTM Manual 40 on Moisture Analysis and Condensation Control. All deliverables and goals were met and exceeded making this collaboration a success to all parties involves.« less

Authors:
Publication Date:
Research Org.:
Oak Ridge National Laboratory (ORNL), Oak Ridge, TN
Sponsoring Org.:
USDOE Assistant Secretary for Energy Efficiency and Renewable Energy (EE)
OSTI Identifier:
940250
Report Number(s):
ORNL00-0575
TRN: US200824%%238
DOE Contract Number:
DE-AC05-00OR22725
Resource Type:
Technical Report
Country of Publication:
United States
Language:
English
Subject:
32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; AIR; CLIMATES; FORECASTING; LABORATORY SYSTEM; MOISTURE; ORNL; PERFORMANCE; PHYSICS; ROOFS; TESTING; WALLS; WEATHER

Citation Formats

Karagiozis, A.N. Researching Complex Heat, Air and Moisture Interactions for a Wide-Range of Building Envelope Systems and Environmental Loads. United States: N. p., 2007. Web. doi:10.2172/940250.
Karagiozis, A.N. Researching Complex Heat, Air and Moisture Interactions for a Wide-Range of Building Envelope Systems and Environmental Loads. United States. doi:10.2172/940250.
Karagiozis, A.N. Tue . "Researching Complex Heat, Air and Moisture Interactions for a Wide-Range of Building Envelope Systems and Environmental Loads". United States. doi:10.2172/940250. https://www.osti.gov/servlets/purl/940250.
@article{osti_940250,
title = {Researching Complex Heat, Air and Moisture Interactions for a Wide-Range of Building Envelope Systems and Environmental Loads},
author = {Karagiozis, A.N.},
abstractNote = {This document serves as the final report documenting work completed by Oak Ridge National Laboratory (ORNL) and the Fraunhofer Institute in Building Physics (Holzkirchen, Germany) under an international CRADA No. 0575 with Fraunhofer Institute of Bauphysics of the Federal Republic of Germany for Researching Complex Heat, Air and Moisture Interactions for a Wide Range of Building Envelope Systems and Environmental Loads. This CRADA required a multi-faceted approach to building envelope research that included a moisture engineering approach by blending extensive material property analysis, laboratory system and sub-system thermal and moisture testing, and advanced moisture analysis prediction performance. The Participant's Institute for Building physics (IBP) and the Contractor's Buildings Technology Center (BTC) identified potential research projects and activities capable of accelerating and advancing the development of innovative, low energy and durable building envelope systems in diverse climates. This allowed a major leverage of the limited resources available to ORNL to execute the required Department of Energy (DOE) directives in the area of moisture engineering. A joint working group (ORNL and Fraunhofer IBP) was assembled and a research plan was executed from May 2000 to May 2005. A number of key deliverables were produced such as adoption of North American loading into the WUFI-software. in addition the ORNL Weather File Analyzer was created and this has been used to address environmental loading for a variety of US climates. At least 4 papers have been co-written with the CRADA partners, and a chapter in the ASTM Manual 40 on Moisture Analysis and Condensation Control. All deliverables and goals were met and exceeded making this collaboration a success to all parties involves.},
doi = {10.2172/940250},
journal = {},
number = ,
volume = ,
place = {United States},
year = {Tue May 15 00:00:00 EDT 2007},
month = {Tue May 15 00:00:00 EDT 2007}
}

Technical Report:

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  • The important role which moisture plays in building envelope system performance creates a need for instrumentation capable of measuring moisture content under dynamic environmental conditions. In this survey information was compiled on the (1) range of moisture contents to be expected in various building materials, (2) moisture contents encountered in building envelopes under different field conditions, and (3) techniques available for measurement of moisture in solid materials and humidity in the atmosphere. An assessment was made of the ability of these techniques to accurately measure moisture content and humidity in components of the building envelope. Recommendations as to candidate techniquesmore » for further development and evaluation are given.« less
  • Study of moisture transfer between the building envelope and the conditioned space air is often focused on the moisture transfer due to the difference in water vapor pressure on the two sides of the building envelope. In actual practice, the influence of transient that and moisture transfer between the building envelope and the space air during the cooldown, condition, and off period must be considered. The results of site surveys have verified a considerable amount of space latent cooling load induced by the moisture transfer from the building envelope to the space air during the cooldown period. This paper discussesmore » moisture migration within solids and proposes a physical model to describe the moisture transfer and a mathematical model to evaluate it. This paper also investigates the empirical formulas and the dimensionless correlations that determine the convective heat transfer coefficient during forced convection and free confection. Also presented is the principle and a method of evaluating various parameters in the convective mass transfer. Finally, this paper proposes a mathematical model of a simultaneous heat and moisture transfer relationship and suggests a method to solve problems in this field.« less
  • This report presents the results from a study of the application of the Minimum Additive Waste Stabilization (MAWS) approach using vitrification as a treatment technology to a variety of waste streams across the DOE complex. This work has involved both experimental vitrification work using actual mixed wastes and surrogate waste streams from several DOE sites (Hanford, Idaho, and Oak Ridge) as well as the development of a computer-based, integrated glass property-composition database. The long-term objective is that this data base will assist glass formulation studies with single waste streams or combinations of waste streams subject to a variety of user-imposedmore » constraints including waste stream usage priorities, process related constraints (e.g., melt viscosity, electrical conductivity, etc.), and waste form performance related constraints (e.g., TCLP and PCT leaching results). 79 refs., 143 figs., 65 tabs.« less