Experimental and Theoretical Study on the Cooling Performance of a CO 2 Mobile Air Conditioning System

Dandong Wang, Binbin Yu, Junye Shi and Jiangping Chen
Additional contact information
Dandong Wang: School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai, 200240, China
Binbin Yu: School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai, 200240, China
Junye Shi: School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai, 200240, China
Jiangping Chen: School of Mechanical Engineering, Shanghai Jiaotong University, Shanghai, 200240, China

Energies, 2018, vol. 11, issue 8, 1-13

Abstract: CO 2 (GWP = 1) is considered as a promising natural alternative refrigerant to HFC-134a in mobile air conditioning (MAC) applications. The objective of this study is to investigate the cooling performance characteristics of a CO 2 MAC system. A prototype CO 2 MAC system, consisting of a CO 2 electrical compressor, CO 2 parallel flow microchannel heat exchangers, and an electrical expansion valve, was developed and tested. Factor analysis experiments were conducted to reveal the effect of outdoor temperature on the cooling performance of this CO 2 MAC system. Compared with a conventional R134a MAC system, the prototype CO 2 MAC system achieved comparable cooling capacity, but had COP reductions of 26% and 10% at 27 °C and 45 °C outdoor conditions, respectively. In addition, based on refrigerant properties, theoretical cycle analysis was done to reveal the impact of evaporator, gas cooler and compressor, on the system cooling performance. It is concluded that the increase of overall compressor efficiency or the decrease of gas cooler approaching temperature could greatly improve the COP of this CO 2 MAC system.

Keywords: mobile air conditioning; CO 2 refrigerant; trans-critical; COP (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2018
References: View complete reference list from CitEc
Citations: View citations in EconPapers (2)

Downloads: (external link)
https://www.mdpi.com/1996-1073/11/8/1927/pdf (application/pdf)
https://www.mdpi.com/1996-1073/11/8/1927/ (text/html)

Related works:
This item may be available elsewhere in EconPapers: Search for items with the same title.

Export reference: BibTeX RIS (EndNote, ProCite, RefMan) HTML/Text

Persistent link: https://EconPapers.repec.org/RePEc:gam:jeners:v:11:y:2018:i:8:p:1927-:d:159669

Access Statistics for this article

Energies is currently edited by Ms. Agatha Cao

More articles in Energies from MDPI
Bibliographic data for series maintained by MDPI Indexing Manager ().