Heat transfer characteristics of alternate refrigerants. Volume 1, Summary: Final report

Technical Report · Mon Jan 01 04:00:00 EST 1996

OSTI ID:205952

Nagda, N ^[1]

---

1. Energen Consulting, Inc., Germantown, MD (United States)

To meet the phase-out requirements of the use of cholorofluorocarbons (CFCs) and hydrochlorofluorocarbons (HCFCs), EPRI and the air conditioning and refrigeration industry have undertaken a program to evaluate the heat transfer characteristics of replacement refrigerants. This report summarizes the research conducted at the University of Illinois and Lehigh University on inside-tube and outside-tube evaporative and condensation heat transfer characteristics of replacement refrigerants. Six candidate replacements for R-22 (R-134a, R-410A, R-407C, AZ20x, HP83a, and Klea66x) and four candidate replacements for R-502 (R-404A, R-507, R407A, and FX40) were tested. The results of the two studies indicate that R-134a and AZ20x performed generally the same as R-22; other replacement refrigerants had lower heat transfer coefficients than R-22. In the case of R-502, R-507 and R-404A had 20 to 100% larger heat transfer coefficients than R-502.

• Research Organization: Electric Power Research Inst., Palo Alto, CA (United States); Energen Consulting, Inc., Germantown, MD (United States)
• Sponsoring Organization: Electric Power Research Inst., Palo Alto, CA (United States)
• OSTI ID: 205952
• Report Number(s): EPRI-TR--106016-V1
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
42 ENGINEERING
AIR CONDITIONING
CHLOROFLUOROCARBONS
EVAPORATION
EXPERIMENTAL DATA
HEAT TRANSFER
REFRIGERANTS
REFRIGERATION
RESEARCH PROGRAMS
VAPOR CONDENSATION
VAPORIZATION HEAT