- Author
- Domanski, P. A. | Didion, D. A.
- Title
- Theoretical Evaluation of R22 and R502 Alternatives.
- Coporate
- National Institute of Standards and Technology, Gaithersburg, MD
- Sponsor
- Department of Energy, Washington, DC Air-Conditioning and Refrigeration Technology Inst.
- Report
- DOE/CE/23810-7; ARTI MCLR Project 650-50900, January 1993, 27 p.
- Contract
- DE-FG02-91CE23810
- Keywords
- refrigerants | heat transfer | evaluation | equations
- Abstract
- The report presents the performance evaluation of nine R22 altervatives and three R502 alternatives. The study was conducted using a semi-theoretical model, CYCLE-11, with a pure cross-flow representation of heat transfer in the evaporator and condenser. The Carnahan-Starling-DeSantis equation of state was used for calculating thermodynamic properties. Transport properties were not involved in the simulations. Simulations were conducted for "drop-in" performance, for performance in a modified system to assess the fluids' potentials, and for performance in a modified system equipped with a liquid-line/suction-line heat exchanger. The results - presented on a relative basis to R22 and R502 performance - include the volumetric capacity, coefficient of performance, pressure increase across the compressor, and compressor discharge pressure and temperature.