Thermal performance of advanced heat exchangers for ammonia refrigeration systems

Journal Article · Fri Oct 01 00:00:00 EDT 1993 · Heat Transfer Engineering

DOI:https://doi.org/10.1080/01457639308939810· OSTI ID:143737

Panchal, C B; Rabas, T J ^[1]

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1. Argonne National Lab., IL (United States)

Current practice in the ammonia industry is to use plain tubes. This article demonstrates that the coefficient of performance (COP) can be increased by about 11% using tubes with ammonia-side enhancement and by about 26% using tubes with ammonia-side and water-side enhancement. Further improvements with respect to energy and cost are possible with the compact heat exchanger types -- plate-frame and plate-fin -- because they can be optimized for the system conditions for each application. These findings are based on experimentally determined overall heat transfer coefficients that were obtained for candidate heat exchangers for the Ocean Thermal Energy Conversion (OTEC) program.

• Research Organization: Argonne National Lab. (ANL), Argonne, IL (United States)
• DOE Contract Number: W-31109-ENG-38
• OSTI ID: 143737
• Journal Information: Heat Transfer Engineering, Vol. 14, Issue 4; Other Information: PBD: Oct-Dec 1993
• Country of Publication: United States
• Language: English

Related Subjects

32 ENERGY CONSERVATION, CONSUMPTION, AND UTILIZATION
HEAT EXCHANGERS
PERFORMANCE
REFRIGERATING MACHINERY
ABSORPTION REFRIGERATION CYCLE
COEFFICIENT OF PERFORMANCE