Experimental study on the influence of intermediate loop water supply temperature on the characteristics of air-water source coupling heat pump system

IF 3.5 2区工程技术 Q3 ENERGY & FUELS Geothermics Pub Date : 2024-09-06 DOI:10.1016/j.geothermics.2024.103153

Dongxiong Li, Kai Ma, Wenxu Yang

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Abstract

For the air-water source coupling heat pump (A-WSCHP) system, the water supply temperature of the intermediate loop (T_WS-INT) directly affects the performance of the two heat pump units, which makes the system characteristics change. In this study, an A-WSCHP system located in Taiyuan, China, was experimentally studied. According to the experimental results, the effects of different intermediate loop water supply temperatures on system coefficient of performance (COP), energy consumption, and equipment characteristics under low-temperature heating conditions were analyzed. The results show that the performance of the A-WSCHP system is strongly consistent with that of the air source heat pump (ASHP) unit, as the T_WS-INT changes in the range of 25.0 ∼35.0 ℃. With the decrease of the T_WS-INT, the power consumption of the system is greatly reduced, the COP is obviously improved, and the number of starts and stops of the ASHP unit is reduced, which is more beneficial to extending the service life of equipment and improving the stability of the system.

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中间环路供水温度对空气-水源耦合热泵系统特性影响的实验研究

对于空气-水源耦合热泵（A-WSCHP）系统，中间环路（TWS-INT）的供水温度直接影响两台热泵机组的性能，从而使系统特性发生变化。本研究对位于中国太原的 A-WSCHP 系统进行了实验研究。根据实验结果，分析了在低温供热条件下，不同中间环路供水温度对系统性能系数（COP）、能耗和设备特性的影响。结果表明，当 TWS-INT 在 25.0 ∼ 35.0 ℃ 范围内变化时，A-WSCHP 系统的性能与空气源热泵（ASHP）机组的性能非常一致。随着 TWS-INT 的降低，系统功耗大大降低，COP 明显提高，ASHP 机组的启停次数减少，更有利于延长设备的使用寿命和提高系统的稳定性。

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来源期刊

Geothermics 工程技术-地球科学综合

CiteScore

7.70

自引率

15.40%

发文量

237

审稿时长

4.5 months

期刊介绍： Geothermics is an international journal devoted to the research and development of geothermal energy. The International Board of Editors of Geothermics, which comprises specialists in the various aspects of geothermal resources, exploration and development, guarantees the balanced, comprehensive view of scientific and technological developments in this promising energy field. It promulgates the state of the art and science of geothermal energy, its exploration and exploitation through a regular exchange of information from all parts of the world. The journal publishes articles dealing with the theory, exploration techniques and all aspects of the utilization of geothermal resources. Geothermics serves as the scientific house, or exchange medium, through which the growing community of geothermal specialists can provide and receive information.