Full Content is available to subscribers

Subscribe/Learn More  >

Optimization of the Capillary Tube for Domestic Refrigerator With Mixture of Propane and Isobutene as Refrigerant

[+] Author Affiliations
Zhongjie Huan

Tshwane University of Technology, Pretoria, South Africa

Chaohong Guo

Chinese Academy of Sciences, Beijing, China

Paper No. IHTC14-22574, pp. 99-107; 9 pages
  • 2010 14th International Heat Transfer Conference
  • 2010 14th International Heat Transfer Conference, Volume 6
  • Washington, DC, USA, August 8–13, 2010
  • Conference Sponsors: Heat Transfer Division
  • ISBN: 978-0-7918-4941-5 | eISBN: 978-0-7918-3879-2
  • Copyright © 2010 by ASME


The hydrocarbon mixture of R290/R600a with mass ratio of 50/50 is regarded as a promising long-term refrigerant to replace R12 in domestic refrigerators since it can potentially provide higher COP than R12 system under the same operating conditions. In practical application, the length of the capillary tube should be matched with this alternative mixture; otherwise, the refrigerator system can probably consume more energy than the R12 system. In this paper, a simulation model of adiabatic capillary tube, in which some empirical coefficients are modified due to their inapplicability for R290/R600a, is established to illustrate the influences of the length of the capillary tube on the performance of the refrigerator. During the investigation a domestic refrigerator of 150L is used to test the thermodynamic cycle performances of R290/R600a (50/50) under conditions with different lengths of the capillary tube. The experimental results indicate that the R290/R600a (50/50) mixture with the optimized capillary length, which was obtained from simulation, has the higher energy efficiency and a lower discharge temperature than the original R12 system. The proposed mixture is proven to be a suitable long-term alternative in terms of its excellent thermodynamic cycle performances.

Copyright © 2010 by ASME



Interactive Graphics


Country-Specific Mortality and Growth Failure in Infancy and Yound Children and Association With Material Stature

Use interactive graphics and maps to view and sort country-specific infant and early dhildhood mortality and growth failure data and their association with maternal

Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Related Content

Customize your page view by dragging and repositioning the boxes below.

Related eBook Content
Topic Collections

Sorry! You do not have access to this content. For assistance or to subscribe, please contact us:

  • TELEPHONE: 1-800-843-2763 (Toll-free in the USA)
  • EMAIL: asmedigitalcollection@asme.org
Sign In