24 June 2014

Diffluence Characteristics Investigation of Distributors Used in Heat Pump Type Air Conditioner with Microgroove Tubes


Well design and application of a distributor is important to obtain a reasonable distribution of refrigeration flow among the multi paths of a heat exchanger in heat pump type air conditioner. In this paper, theoretical and experimental studies on the diffluence characteristics of distributors used in heat pump type air conditioners with microgroove tubes were done. The main factors influencing diffluence performance of distributors were
summarized by theoretical analysis. The effects of the main factors on diffluence performance of typical distributors were investigated by experiments with air and water as the working fluid instead of actual refrigerants. Based on the theoretical analysis and experimental results,
improvement methods for the existing distributors were proposed, and the improvement effects were verified by experiments.