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Experimental transient performance of a heat pump equipped with a distillation column.

Author(s) : GEBBIE J. G., JENSEN M. K., DOMANSKI P. A.

Type of article: Article, IJR article

Summary

A series of experiments were conducted on a heat pump equipped with a distillation column. The system was operated with R-32 and with a 30/70% by mass mixture of R-32/R-134a to examine the difference between the transient performance trends with a pure fluid (R-32), and those with a zeotropic mixture (R-32/R-134a). Additionally, the effects of varying heat transfer fluid mass flow, compressor speed, and accumulator sump heat input were examined. Each test was 1 h in duration. The heat pump capacities did not generally achieve steady state during the R-32/R-134a tests. Steady state was generally achieved during the R-32 tests. As a percentage of the final (end-of-test) capacity, the rate of capacity increase was greater during the R-32/R-134a tests than during those conducted with the pure fluid. The R-32/R-134a tests exhibited capacity oscillations early in each transient that were not present during the R-32 tests. The results show that circulating refrigerant mass and composition are the primary controlling factors with regard to transient capacity.

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Pages: 499-505

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Details

  • Original title: Experimental transient performance of a heat pump equipped with a distillation column.
  • Record ID : 2007-0865
  • Languages: English
  • Source: International Journal of Refrigeration - Revue Internationale du Froid - vol. 30 - n. 3
  • Publication date: 2007/05

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