Thermodynamic performance limit and evaporator design considerations for NARM-based domestic refrigerator-freeze systems. Rept. for Aug 89-May 90. [Non-Azeotropic Refrigerant Mixtures]
The paper gives results of an investigation of non-azeotropic refrigerant mixtures (NARMs) for a two-temperature-level heat exchange process found in a domestic refrigerator-freezer. Ideal (constant air temperature) heat exchange processes are assumed. The results allow the effects of intercooling between the evaporator refrigerant stream and the condenser outlet stream to be examined systematically. Three refrigerant pairs, R22/R142b, R22/R123, and R32/R142b, were studied, but the results for only R22/R123 are presented because of its unique temperature glide curvature. Practical implementation of a Lorenz cycle constrains evaporator design. An evaporator module design is presented which meets the NARM system constraints.
- Research Organization:
- Illinois Univ., Urbana, IL (United States). Dept. of Mechanical and Industrial Engineering
- OSTI ID:
- 6908059
- Report Number(s):
- PB-93-106821/XAB; CNN: EPA-R-816206
- Resource Relation:
- Other Information: Sponsored by Environmental Protection Agency, Research Triangle Park, NC. Air and Energy Engineering Research Lab
- Country of Publication:
- United States
- Language:
- English
Similar Records
Selection of ozone-safe, nonazeotropic refrigerant mixtures for capacity modulation in residential heat pumps
Alternative refrigerants and refrigeration cycles for domestic refrigerators
Related Subjects
EVAPORATORS
DESIGN
REFRIGERANTS
THERMODYNAMIC PROPERTIES
EVAPORATION
FREEZERS
HEAT TRANSFER
PERFORMANCE
POLLUTION CONTROL
REFRIGERATORS
CONTROL
ENERGY TRANSFER
FLUIDS
PHASE TRANSFORMATIONS
PHYSICAL PROPERTIES
WORKING FLUIDS
320106* - Energy Conservation
Consumption
& Utilization- Building Equipment- (1987-)