The influence of internal heat exchanger on energy efficiency and environmental effects of the Heat Pump using Low-GWP Refrigerants as substitutes

2018 International Conference of Green Buildings and Environmental Management

土木建筑工程;生态环境科学

Yuqing, Zhao^1 ; Yun, Dai^1 ; Gaoyan^1 ; Lanyi, Xie^1 ; Xiangyang, Hou^1 ; Jianling, Gao^1

School of Civil Engineering, North China University of Technology, No.5, Jinyuanzhuang Road, Shijingshan District, Beijing

100144, China^1

关键词: Energy performance;    Experimental analysis;    Heat pumps;    Internal heat exchanger;    Mass percentage;    R1234ze;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/186/3/012084/pdf
DOI  :  10.1088/1755-1315/186/3/012084

来源: IOP

【 摘 要 】

This paper presents an experimental analysis of the influence of heat exchanger on the performance of a heat pump system using Low-GWP refrigerants as replacements for R22. In this work, we compare the energy performance of a monitored heat pump system using NC01(composed of R32, R1234ze(E), and R134a at a mass percentage of 50%:17%:33%), R32 and R1234ze(E) with and without the presence of an internal heat exchanger. From the experimental results, COP reductions of R1234ze(E), NC01 and R32 was 12%, 4% and 1.9% respectively, although the presence of an IHX can help to lessen these reductions between 2 and 6%. The results indicated lower TEWI amounts as a result of using NC01 as an alternative to R22 with the presence of IHT (internal heat exchanger).