New Regenerative Cycle for Vapor Compression Refrigeration

Bergander, Mark J.

doi:10.2172/850491

Title: New Regenerative Cycle for Vapor Compression Refrigeration

Full Record
Other Related Research

Abstract

The main objective of this project is to confirm on a well-instrumented prototype the theoretically derived claims of higher efficiency and coefficient of performance for geothermal heat pumps based on a new regenerative thermodynamic cycle as comparing to existing technology. In order to demonstrate the improved performance of the prototype, it will be compared to published parameters of commercially available geothermal heat pumps manufactured by US and foreign companies. Other objectives are to optimize the design parameters and to determine the economic viability of the new technology. Background (as stated in the proposal): The proposed technology closely relates to EERE mission by improving energy efficiency, bringing clean, reliable and affordable heating and cooling to the residential and commercial buildings and reducing greenhouse gases emission. It can provide the same amount of heating and cooling with considerably less use of electrical energy and consequently has a potential of reducing our nations dependence on foreign oil. The theoretical basis for the proposed thermodynamic cycle was previously developed and was originally called a dynamic equilibrium method. This theory considers the dynamic equations of state of the working fluid and proposes the methods for modification of T-S trajectories of adiabatic transformation by changing dynamicmore »« less

Authors:: Bergander, Mark J.

Publication Date:: Mon Aug 29 00:00:00 EDT 2005

Research Org.:: Magnetic Development Inc.

Sponsoring Org.:: USDOE Office of Energy Efficiency and Renewable Energy (EERE)

OSTI Identifier:: 850491

Report Number(s):: Final Technical Report
TRN: US200707%%266

DOE Contract Number:: FG36-04GO14327

Resource Type:: Technical Report

Country of Publication:: United States

Language:: English

Subject:: 32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION; COEFFICIENT OF PERFORMANCE; COMMERCIAL BUILDINGS; COMPRESSION; ENERGY EFFICIENCY; EQUATIONS OF STATE; FLOW RATE; GREENHOUSE GASES; HEAT PUMPS; POTENTIAL ENERGY; REFRIGERATION; THERMODYNAMIC CYCLES; TWO-PHASE FLOW; VELOCITY; WORKING FLUIDS; Heat Pumps, Refrigeration, Two-Phase Flow

Citation Formats


                    Bergander, Mark J. New Regenerative Cycle for Vapor Compression Refrigeration.  United States: N. p., 2005. 
        Web.  doi:10.2172/850491.

Copy to clipboard


                    Bergander, Mark J. New Regenerative Cycle for Vapor Compression Refrigeration.  United States.  https://doi.org/10.2172/850491

Copy to clipboard


                    Bergander, Mark J. 2005.  
        "New Regenerative Cycle for Vapor Compression Refrigeration".  United States.  https://doi.org/10.2172/850491.  https://www.osti.gov/servlets/purl/850491.

Copy to clipboard


                    
@article{osti_850491,

  title        = {New Regenerative Cycle for Vapor Compression Refrigeration},

  author       = {Bergander, Mark J.},

  abstractNote = {The main objective of this project is to confirm on a well-instrumented prototype the theoretically derived claims of higher efficiency and coefficient of performance for geothermal heat pumps based on a new regenerative thermodynamic cycle as comparing to existing technology. In order to demonstrate the improved performance of the prototype, it will be compared to published parameters of commercially available geothermal heat pumps manufactured by US and foreign companies. Other objectives are to optimize the design parameters and to determine the economic viability of the new technology. Background (as stated in the proposal): The proposed technology closely relates to EERE mission by improving energy efficiency, bringing clean, reliable and affordable heating and cooling to the residential and commercial buildings and reducing greenhouse gases emission. It can provide the same amount of heating and cooling with considerably less use of electrical energy and consequently has a potential of reducing our nations dependence on foreign oil. The theoretical basis for the proposed thermodynamic cycle was previously developed and was originally called a dynamic equilibrium method. This theory considers the dynamic equations of state of the working fluid and proposes the methods for modification of T-S trajectories of adiabatic transformation by changing dynamic properties of gas, such as flow rate, speed and acceleration. The substance of this proposal is a thermodynamic cycle characterized by the regenerative use of the potential energy of two-phase flow expansion, which in traditional systems is lost in expansion valves. The essential new features of the process are: (1) The application of two-step throttling of the working fluid and two-step compression of its vapor phase. (2) Use of a compressor as the initial step compression and a jet device as a second step, where throttling and compression are combined. (3) Controlled ratio of a working fluid at the first and second step of compression. In the proposed system, the compressor compresses the vapor only to 50-60% of the final pressure, while the additional compression is provided by a jet device using internal potential energy of the working fluid flow. Therefore, the amount of mechanical energy required by a compressor is significantly reduced, resulting in the increase of efficiency (either COP or EER). The novelty of the cycle is in the equipment and in the way the multi-staging is accomplished. The anticipated result will be a new refrigeration system that requires less energy to accomplish a cooling task. The application of this technology will be for more efficient designs of: (1) Industrial chillers, (2) Refrigeration plants, (3) Heat pumps, (4) Gas Liquefaction plants, (5) Cryogenic systems.},

  doi          = {10.2172/850491},

  url          = {https://www.osti.gov/biblio/850491},
  journal      = {},
number       = ,

  volume       = ,

  place        = {United States},

  year         = {Mon Aug 29 00:00:00 EDT 2005},

  month        = {Mon Aug 29 00:00:00 EDT 2005}

}

Copy to clipboard

Technical Report:

View Technical Report (1.04 MB)

https://doi.org/10.2172/850491

Save / Share:

Export Metadata

Save to My Library

Similar records in OSTI.GOV collections:

Performance Evaluation of the ThermoLift Natural Gas Fired Air Conditioner and Cold-Climate Heat Pump

Technical Report Hofbauer, Peter; Sharma, Vishaldeep; Haas, Jonathan; ...

ThermoLift is currently developing its Thermal Compression Heat Pump (TCHP™), a natural-gas driven air conditioner and cold-climate heat pump, which can provide space heating, water heating, and air conditioning simultaneously in a single device. The system has broad application as a combined heating, ventilation, and air-conditioning (HVAC) solution with the benefit of substantial energy, cost, and greenhouse gas (GHG) reductions. Unlike traditional vapor compression heat-pumps, the TCHP™ uses helium as a working fluid in place of high global warming potential (GWP) refrigerants. The development effort has produced three iterations or generations of prototypes with advancement of the technology readiness levelmore »« less
https://doi.org/10.2172/1564173

Full Text Available
Active Magnetic Regenerative Liquefier

Technical Report Barclay, John; Oseen-Send, Kathryn; Ferguson, Luke; ...

This final report for the DOE Project entitled Active Magnetic Regenerative Liquefier (AMRL) funded under Grant DE-FG36-08GO18064 to Heracles Energy Corporation d.b.a. Prometheus Energy (Heracles/Prometheus) describes an active magnetic regenerative refrigerator (AMRR) prototype designed and built during the period from July 2008 through May 2011. The primary goal of this project was to make significant technical advances toward highly efficient liquefaction of hydrogen. Conventional hydrogen liquefiers at any scale have a maximum FOM of ~0.35 due primarily to the intrinsic difficulty of rapid, efficient compression of either hydrogen or helium working gases. Numerical simulation modeling of high performance AMRL designsmore »« less
https://doi.org/10.2172/1328437

Full Text Available
Development of the ANL plant dynamics code and control strategies for the supercritical carbon dioxide Brayton cycle and code validation with data from the Sandia small-scale supercritical carbon dioxide Brayton cycle test loop.

Technical Report Moisseytsev, A; Sienicki, J

Significant progress has been made in the ongoing development of the Argonne National Laboratory (ANL) Plant Dynamics Code (PDC), the ongoing investigation and development of control strategies, and the analysis of system transient behavior for supercritical carbon dioxide (S-CO{sub 2}) Brayton cycles. Several code modifications have been introduced during FY2011 to extend the range of applicability of the PDC and to improve its calculational stability and speed. A new and innovative approach was developed to couple the Plant Dynamics Code for S-CO{sub 2} cycle calculations with SAS4A/SASSYS-1 Liquid Metal Reactor Code System calculations for the transient system level behavior onmore »« less
https://doi.org/10.2172/1040687

Full Text Available
Development of a Water Based, Critical Flow, Non-Vapor Compression cooling Cycle

Technical Report Hosni, Mohammad

Expansion of a high-pressure liquid refrigerant through the use of a thermostatic expansion valve or other device is commonplace in vapor-compression cycles to regulate the quality and flow rate of the refrigerant entering the evaporator. In vapor-compression systems, as the condensed refrigerant undergoes this expansion, its pressure and temperature drop, and part of the liquid evaporates. We (researchers at Kansas State University) are developing a cooling cycle that instead pumps a high-pressure refrigerant through a supersonic converging-diverging nozzle. As the liquid refrigerant passes through the nozzle, its velocity reaches supersonic (or critical-flow) conditions, substantially decreasing the refrigerant’s pressure. This sharpmore »« less
https://doi.org/10.2172/1129868

Full Text Available
Research Needs and Impacts in Predictive Simulation for Internal Combustion Engines (PreSICE)

Program Document Eckerle, Wayne; Rutland, Chris; Rohlfing, Eric; ...

This report is based on a SC/EERE Workshop to Identify Research Needs and Impacts in Predictive Simulation for Internal Combustion Engines (PreSICE), held March 3, 2011, to determine strategic focus areas that will accelerate innovation in engine design to meet national goals in transportation efficiency. The U.S. has reached a pivotal moment when pressures of energy security, climate change, and economic competitiveness converge. Oil prices remain volatile and have exceeded $100 per barrel twice in five years. At these prices, the U.S. spends $1 billion per day on imported oil to meet our energy demands. Because the transportation sector accountsmore »« less
https://doi.org/10.2172/1291137

Full Text Available

Similar Records