This content is not included in your SAE MOBILUS subscription, or you are not logged in.
R410A Based Automotive Heat Pump System That Hits Cabin Heating Goal Successfully in -30 °C Extreme Ambient
ISSN: 0148-7191, e-ISSN: 2688-3627
Published April 02, 2019 by SAE International in United States
This content contains downloadable datasetsAnnotation ability available
To meet low ambient challenges on Battery based Electric Vehicles (BEV), it is necessary to employ heat pump systems on the HVAC systems. However, due to the boiling points limitation of the regular refrigerant R134A/R1234YF, even with Vapor Injection cycle (VI) added, due to -26°C Boiling Temperature (BT) limitation, it is still encountering serious challenges to meet -30 °C or lower ambient needs, although VI Heat Pump (VI H/P) may reach COP>=1.7 at ambient -18 °C. An alternative low BT refrigerant, R410A, plus VI participation, the combination provides potentials to operate in extreme low ambient like -30 °C. In order to find out the actual heating performance of R410A+VI, a demonstration fleet of three vehicles had been built up for road tests to compare each other, which consists of a traditional vehicle (ICE gas heating), a BEV with PTC water heating system (R134A) and a BEV with VI heat pump system (R410A). The testing area covers the coldest city in China such as Harbin, (-20°C), Yakeshi (-39 °C), The road tests have exhibited positive results that the R410A based VI H/P cabin heating system fulfills requirements essentially both for passengers comfort and defrosting/demising. This paper is to summarize the information of the experiments related, including vehicle information, H/P thermal loop, the components applied etc. Meanwhile, it opens some environmental concerns of R410A application on vehicular HVAC systems.
CitationZhai, K. and Chen, X., "R410A Based Automotive Heat Pump System That Hits Cabin Heating Goal Successfully in -30 °C Extreme Ambient," SAE Technical Paper 2019-01-0910, 2019, https://doi.org/10.4271/2019-01-0910.
Data Sets - Support Documents
|[Unnamed Dataset 1]|
|[Unnamed Dataset 2]|
|[Unnamed Dataset 3]|
|[Unnamed Dataset 4]|
|[Unnamed Dataset 5]|
|[Unnamed Dataset 6]|
- Danfoss Refrigerant Slider App.
- Emerson Climate Technology, AE4-1327 R12, 2015.
- Umezu, K., Mitsubishi Motors Corporation, “Air-Conditioning System for Electric Vehicles (iMiev),” in SAE Automotive Refrigerant & System Efficiency Symposium, 2010.
- Zhai, K., “Potential Application of Vapor Injection Cycle on Battery Electric Vehicle Heat Pumps at Low-Ambient Operation Performance of MAC Systems,” in SAE 2016 Thermal Management System Symposium, 15TMSS-0036. Mercy, CO.
- Harakawa, Y. et al., Denso Corp., “Development of E-Compressor with Injection Function,” SAE TMSS17.
- ASHRAE Handbook- Fundamentals (SI), 2005, P1.10.
- Papasavva, S., Hill, W.R., and Andersen, S.O., “GREEN-MAC-LCCP©: A Tool for Assessing the Life Cycle Climate.”
- Pham, H.M. and Rajendran, R., “R32 and HFOs as Low-GWP Refrigerants for Air Conditioning,” in International Refrigeration and Air Conditioning, Conference Paper 1235, 2012, http://docs.lib.purdue.edu/iracc/1235.
- Uselton, R.B., “Drop-In and Soft-Optimization Tests of Alternative Refrigerants R32 and R1234YF in a Residential Split-System Heat Pump,” Jan. 16, 2014, Lennox Industrial Inc.
- BMW Group University, “BMW I01Heating and A/C Systems,” 2015.