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Experimental study of two-phase separators for vapor compression systems in household appliances.

Number: pap. 2276

Author(s) : ALVARADO J., JUNGE B., KELECY A.

Summary

The objective of this study was to evaluate the design of liquid-vapor gravity separators for low mass flux systems (1.5 – 3.5lbm/ft^2 hr [7.3 -17.1 kg/m^2hr]). Two separator geometries with height to diameter aspect ratios of approximately 2 and 10 were evaluated to determine separation sensitivity to geometry. The results of the study show that both geometries perform similarly; the primary factor to influence separation in this study was the balance maintained between the inlet quality and top branch flow ratio. When inlet quality was greater than top branch flow ratio, no clear liquid-vapor interface was present; the mixture entering the separator was characteristic of misty flow and thus no liquid buildup was found within the separator. However, when inlet quality was less than the top branch flow ratio, the liquid-vapor interface was visible and a liquid build-up was observed within the separator vessel. The results indicate the feasibility of separating liquid effectively for low mass flux flow conditions and both separator geometries, as long as the top branch flow ratio is not less than the vapor quality entering the separator.

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Pages: 10 p.

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Details

  • Original title: Experimental study of two-phase separators for vapor compression systems in household appliances.
  • Record ID : 30018767
  • Languages: English
  • Source: 2016 Purdue Conferences. 16th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Publication date: 2016/07/11

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