{"title":"Experimental study on the influence of intermediate loop water supply temperature on the characteristics of air-water source coupling heat pump system","authors":"","doi":"10.1016/j.geothermics.2024.103153","DOIUrl":null,"url":null,"abstract":"<div><p>For the air-water source coupling heat pump (A-WSCHP) system, the water supply temperature of the intermediate loop (<em>T</em><sub>WS-INT</sub>) 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 <em>T</em><sub>WS-INT</sub> changes in the range of 25.0 ∼35.0 ℃. With the decrease of the <em>T</em><sub>WS-INT</sub>, 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.</p></div>","PeriodicalId":55095,"journal":{"name":"Geothermics","volume":null,"pages":null},"PeriodicalIF":3.5000,"publicationDate":"2024-09-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Geothermics","FirstCategoryId":"5","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S0375650524002396","RegionNum":2,"RegionCategory":"工程技术","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ENERGY & FUELS","Score":null,"Total":0}
引用次数: 0
Abstract
For the air-water source coupling heat pump (A-WSCHP) system, the water supply temperature of the intermediate loop (TWS-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 TWS-INT changes in the range of 25.0 ∼35.0 ℃. With the decrease of the TWS-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.
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.