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A numerical study of the effect of refrigerant circuiting on coil performance.
Author(s) : OUZZANE M., AIDOUN Z.
Summary
A study of the effect of circuiting on refrigeration coil operation has been performed for several different configurations of evaporation paths, using CO2 as a working fluid. Several circuited configurations were compared to a basic unit consisting of a low capacity, standard plain fin, staggered cross flow coil. The analysis was based on a numerical model that calculates incrementally parameter distributions for air across the coil and for refrigerant inside the tubes. Circuiting which consisted in defining refrigerant flow paths and varying flow rates within the coil was shown to affect performance and general operational coil behaviour. The impact of circuiting is expected to play a major role in the design of large capacity coils for which optimized circuits may reduce the overall size, better distribute the flow and reduce frost formation.
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Details
- Original title: A numerical study of the effect of refrigerant circuiting on coil performance.
- Record ID : 2006-0636
- Languages: English
- Source: Commercial Refrigeration. Thermophysical Properties and Transfer Processes of Refrigerants. Proceedings of the IIR International Conferences.
- Publication date: 2005/08/02
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Indexing
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Themes:
Other air-conditioning equipment;
Heat transfer;
Mass transfer - Keywords: Geometry; Finned tube; Distributor; Air cooler; Coil; Evaporator; Air conditioning; CO2
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