CRITICAL-REVIEW OF AVAILABLE CORRELATIONS FOR 2-PHASE FLOW HEAT-TRANSFER OF AMMONIA

Although ammonia has been used for decades as a refrigerant of choice for selected large- and small-scale applications, no formal database i s available on heat transfer of ammonia. A critical review of the publ ished literature on heat transfer of ammonia is provided in this paper . The available correlations for in-tube and external boiling/evaporat ion and condensation heat transfer of ammonia are discussed and evalua ted where possible. Supported by the findings of this effort, research areas of relevance that can contribute to expanded use of ammonia as an environmentally friendly refrigerant are suggested. Copyright (C) 1 996 Elsevier Science Ltd and IIR