Performance Analysis of a Combined Solar-Assisted Heat Pump Heating System in Xi’an, China

Chao Huan, Shengteng Li, Fenghao Wang, Lang Liu, Yujiao Zhao, Zhihua Wang and Pengfei Tao
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Chao Huan: Energy School, Xi’an University of Science and Technology, Xi’an 710054, China
Shengteng Li: Energy School, Xi’an University of Science and Technology, Xi’an 710054, China
Fenghao Wang: School of Human Settlements and Civil Engineering, Xi’an Jiaotong University, Xi’an 710049, China
Lang Liu: Energy School, Xi’an University of Science and Technology, Xi’an 710054, China
Yujiao Zhao: Energy School, Xi’an University of Science and Technology, Xi’an 710054, China
Zhihua Wang: School of Human Settlements and Civil Engineering, Xi’an Jiaotong University, Xi’an 710049, China
Pengfei Tao: Key Laboratory of Coal Resources Exploration and Comprehensive Utilization, Ministry of Land and Resources, Xi’an 710021, China

Energies, 2019, vol. 12, issue 13, 1-20

Abstract: This study proposed a combined solar-assisted heat pump (SAHP) system that could operate in the serial mode or parallel mode. For this proposed system, a stable year-round operation could be achieved without the assistance of electric heating or low-temperature heat pump. By analyzing the heat balance equations, a correlation of the combined SAHP system for the two modes switched was obtained, which provided a theoretical basis for the optimal operation of this system. In addition, the performance of the proposed system applied in a university bathroom in Xi’an district was investigated using TRNSYS. The results illustrated that compared to the serial and parallel systems, the proposed system exhibited a good performance on energy efficiency. The annual average coefficient of performance (COP) of the proposed system was 5.7, obviously higher than those of the serial system and the parallel system, which were 3.3 and 4.3, respectively. Therefore, the results in this study could provide the theoretical guidance and reference for practical engineering design.

Keywords: solar-assisted heat pump; combined system; serial system; parallel system; COP; TRNSYS (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: 2019
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (4)

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