Journal
ENERGY
Volume 112, Issue -, Pages 179-187Publisher
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.energy.2016.06.069
Keywords
Vapor injection; Multi-heat pump; Injection ratio; R410A; R32
Categories
Funding
- Human Resources Development of the Korea Institute of Energy Technology Evaluation and Planning (KETEP) - Korea Government Ministry of Trade, Industry Energy [20144010200770]
- Korea Evaluation Institute of Industrial Technology (KEIT) [20144010200770] Funding Source: Korea Institute of Science & Technology Information (KISTI), National Science & Technology Information Service (NTIS)
Ask authors/readers for more resources
The cooling and heating performances of R410A and R32 multi-heat pumps with a sub-cooler vapor injection (SCVI) were measured and compared with variations in the outdoor temperature, compressor speed, and injection ratio. Optimum injection ratios were determined to obtain maximum cooling and heating performances at a given operating condition. In the cooling mode with the optimum injection ratios, the R410A and R32 multi-heat pumps with vapor injection showed 2.1%-6.3% higher cooling capacity than those without vapor injection. In the heating mode, the R410A and R32 multi-heat pumps with vapor injection showed 7.5%-13.9% higher heating capacity than those without vapor injection, while showing 2.6%-7.0% and 1.1%-4.7% higher COPs, respectively. In addition, the SCVI cycle was more effective for improving the cooling and heating performances under extremely hot and cold weather conditions, respectively. (C) 2016 Elsevier Ltd. All rights reserved.
Authors
I am an author on this paper
Click your name to claim this paper and add it to your profile.
Reviews
Recommended
No Data Available
Share Paper
