Study of a water-to-water heat pump using hydrocarbon and hydrofluorocarbon zeotropic mixtures

Technical Report · Sat May 01 00:00:00 EDT 1999

OSTI ID:6397840

Payne, W V; Domanski, P A; Muller, J

This investigation compared the performance of R22 to the performance of propane (R290) and zeotropic mixtures of HFC's and hydrocarbons in a water-to-water heat pump. Baseline testing began with R22 and proceeded to R290, R32/290, R32/152a, and R290/600a. The use of brazed plate heat exchangers arranged in counterflow for both heating and cooling allowed glide matching using the zeotropic refrigerant mixtures. The performance of the system was characterized by air-side capacity, air-side Coefficient of Performance (COP), compressor RPM, and refrigerant conditions.

• Research Organization: National Inst. of Standards and Technology, Building Environment Div., Gaithersburg, MD (United States)
• OSTI ID: 6397840
• Report Number(s): PB-99-152373/XAB; NISTIR-6330
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
COEFFICIENT OF PERFORMANCE
COMPARATIVE EVALUATIONS
COUNTERFLOW SYSTEMS
HEAT EXCHANGERS
MIXTURES
PROPANE
REFRIGERANTS
WATER SOURCE HEAT PUMPS
ALKANES
DISPERSIONS
EVALUATION
FLUIDS
HEAT PUMPS
HYDROCARBONS
ORGANIC COMPOUNDS
WORKING FLUIDS
320106* - Energy Conservation
Consumption
& Utilization- Building Equipment- (1987-)