Extending the capillary tube of a propane air-conditioner to reduce the refrigerant charge

Article

Tangalajuk Siang, Jeri and Sharifian, Ahmad. 2017. "Extending the capillary tube of a propane air-conditioner to reduce the refrigerant charge." Energy Procedia. 110, pp. 229-234. https://doi.org/10.1016/j.egypro.2017.03.132
Article Title

Extending the capillary tube of a propane air-conditioner to reduce the refrigerant charge

ERA Journal ID210411
Article CategoryArticle
AuthorsTangalajuk Siang, Jeri (Author) and Sharifian, Ahmad (Author)
Journal TitleEnergy Procedia
Journal Citation110, pp. 229-234
Number of Pages6
Year2017
PublisherElsevier
Place of PublicationNetherlands
ISSN1876-6102
Digital Object Identifier (DOI)https://doi.org/10.1016/j.egypro.2017.03.132
Web Address (URL)http://linkinghub.elsevier.com/retrieve/pii/S1876610217301625
Abstract

Hydrocarbon refrigerants are employed to replace synthetic refrigerants due totheir low global warming and ozone depletion potentials; however, these refrigerants are flammable; therefore, their mass in the system should be minimized to reduce the associated risks. This study deals with the novelidea of extending the capillary tube of a portable air-conditioner in orderto decrease the amount of refrigerant charge in the system. Extending the length of the capillary tube will shorten thelength of the liquid line
in applications in which the distance between theoutlet of the condenser and the inlet of the evaporator cannot be reduced. A script was developed and its accuracywas experimentally assessed.It was then used to estimate the amount of charge for the existing design and the extended capillary tube. The results show a significant reduction (63.9%) in the amount of propane in the capillary tubeand liquid line, and a reasonable decrease (8.3%) in the maximumspeed of refrigerant for the airconditioner used in this work.

Keywordscapillary tube, liquid line, charge
ANZSRC Field of Research 2020401703. Energy generation, conversion and storage (excl. chemical and electrical)
409999. Other engineering not elsewhere classified
Public Notes

Part of special issue: 1st International Conference on Energy and Power, ICEP2016, 14-16 December 2016, RMIT
University, Melbourne, Australia.
© 2017 The Authors. Published by Elsevier Ltd. This is an open access article under the CC BY-NC-ND license
(http://creativecommons.org/licenses/by-nc-nd/4.0/)

Byline AffiliationsComputational Engineering and Science Research Centre
Institution of OriginUniversity of Southern Queensland
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