Alternative non-CFC mobile air conditioning
Concern about the destruction of the global environment by chlorofluorocarbon (CFC) fluids has become an impetus in the search for alternative, non-CFC refrigerants and cooling methods for mobile air conditioning (MAC). While some alternative refrigerants have been identified, they are not considered a lasting solution because of their high global warming potential, which could result in their eventual phaseout. In view of this dilemma, environmentally acceptable alternative cooling methods have become important. This report, therefore, is aimed mainly at the study of alternative automotive cooling methodologies, although it briefly discusses the current status of alternative refrigerants. The alternative MACs can be divided into work-actuated and heat-actuated systems. Work-actuated systems include conventional MAC, reversed Brayton air cycle, rotary vane compressor air cycle, Stirling cycle, thermoelectric (TE) cooling, etc. Heat-actuated MACs include metal hydride cooling, adsorption cooling, ejector cooling, absorption cycle, etc. While we are better experienced with some work-actuated cycle systems, heat-actuated cycle systems have a high potential for energy savings with possible waste heat applications. In this study, each altemative cooling method is discussed for its advantages and its limits.
- Research Organization:
- Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
- Sponsoring Organization:
- USDOE; USDOE, Washington, DC (United States)
- DOE Contract Number:
- AC05-84OR21400
- OSTI ID:
- 6930880
- Report Number(s):
- ORNL/CON-335; ON: DE93003670
- Country of Publication:
- United States
- Language:
- English
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Related Subjects
42 ENGINEERING
54 ENVIRONMENTAL SCIENCES
AIR CONDITIONERS
COMPARATIVE EVALUATIONS
AUTOMOBILES
AIR CONDITIONING
CHLOROFLUOROCARBONS
AIR POLLUTION ABATEMENT
REFRIGERANTS
MATERIAL SUBSTITUTION
BRAYTON CYCLE
GREENHOUSE EFFECT
RECOMMENDATIONS
STIRLING CYCLE
THERMOELECTRIC CONVERSION
CLIMATIC CHANGE
CONVERSION
DIRECT ENERGY CONVERSION
ENERGY CONVERSION
EVALUATION
FLUIDS
ORGANIC CHLORINE COMPOUNDS
ORGANIC COMPOUNDS
ORGANIC FLUORINE COMPOUNDS
ORGANIC HALOGEN COMPOUNDS
POLLUTION ABATEMENT
THERMODYNAMIC CYCLES
VEHICLES
WORKING FLUIDS
320203* - Energy Conservation
Consumption
& Utilization- Transportation- Land & Roadway
425000 - Engineering- Power Cycles- (1980-)
540120 - Environment
Atmospheric- Chemicals Monitoring & Transport- (1990-)