Performance of a single-duct portable propane air conditioning system under different refrigerant charge levels

Article

Tangalajuk Siang, Jeri and Sharifian, Ahmad. 2017. "Performance of a single-duct portable propane air conditioning system under different refrigerant charge levels." Heat Transfer. 46 (8), pp. 1246-1261. https://doi.org/10.1002/htj.21271
Article Title

Performance of a single-duct portable propane air conditioning system under different refrigerant charge levels

ERA Journal ID41154
Article CategoryArticle
AuthorsTangalajuk Siang, Jeri (Author) and Sharifian, Ahmad (Author)
Journal TitleHeat Transfer
Heat Transfer: Asian Research
Journal Citation46 (8), pp. 1246-1261
Number of Pages16
Year2017
Place of PublicationUnited States
ISSN1099-2871
1523-1496
Digital Object Identifier (DOI)https://doi.org/10.1002/htj.21271
Web Address (URL)http://onlinelibrary.wiley.com/doi/10.1002/htj.21271/pdf
Abstract

The effects of the refrigerant charge on the performance of a portable propane air conditioning system have been evaluated and compared to nonportable systems in which the surrounding temperatures of the evaporator and condenser are not equal. This study aims to determine the similarities and differences in the performance of the two types of propane air conditioners under different charge levels, and to serve as a source of reference for future designs of portable air conditioners. The refrigerant charge was changed from −12.3% to +30% of its normal charge at several room temperatures ranging from 20°C to 35°C. The performance parameters include the refrigerant temperature, mass flow rate, maximum velocity of refrigerant, maximum pressure, cooling capacity, compressor work, specific cooling capacity, and coefficient of performance of the system. It has been found that an increase in charge level was found to increase the cooling capacity, coefficient of performance, and maximum velocity of refrigerant in the system while decreasing specific cooling capacity. The increase in the charge caused a relatively insignificant rise in the maximum pressure of the system and useful work of the compressor.

Keywordscharge; performance; portable; air conditioning system
ANZSRC Field of Research 2020401703. Energy generation, conversion and storage (excl. chemical and electrical)
401408. Manufacturing processes and technologies (excl. textiles)
401702. Dynamics, vibration and vibration control
409999. Other engineering not elsewhere classified
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Byline AffiliationsComputational Engineering and Science Research Centre
Institution of OriginUniversity of Southern Queensland
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