变环境条件下空气源热泵的能量和放能分析

IF 16.4 1区化学 Q1 CHEMISTRY, MULTIDISCIPLINARY

Accounts of Chemical Research Pub Date : 2024-01-17 DOI:10.3846/jeelm.2024.20771

Giedrė Streckienė, Tomas Kropas, Rūta Mikučionienė, Rasa Džiugaitė-Tumėnienė

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引用次数: 0

摘要

空气源热泵（ASHPs）正成为越来越受欢迎的建筑供暖源。本文对 ASHP 在立陶宛供暖季节运行的实验数据进行了评估，当时蒸发器表面结冰问题十分明显。通过性能系数 (COP)、COPCarnot、放能效率和一次能源比进行能量和放能分析，对空气-水热泵的性能进行了研究。分析结果表明，ASHP 理想运行状态与实际运行状态之间存在差异，这表明需要提高 ASHP 蒸发器的性能。实际 COP 比卡诺 COP 低 3.5 至 4.7 倍。在 0 °C 和 95% 湿度条件下，ASHP 的性能最差，平均能效为 0.21，COP 为 1.49。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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ENERGY AND EXERGY ANALYSIS OF AN AIR SOURCE HEAT PUMP UNDER VARIABLE AMBIENT CONDITIONS

Air source heat pumps (ASHPs) are becoming an increasingly popular heating source for buildings. The paper presents an evaluation of the experimental data from ASHP operation during the heating season in Lithuania when the problem of the evaporator’s surface freezing is visible. The performance of the air-to-water heat pump is examined using energy and exergy analyses performed by a coefficient of performance (COP), COPCarnot, exergy efficiency, and primary energy ratio. Analysis results show that the existing difference between the ideal and actual operation of ASHP represents the demand to improve the performance of ASHP evaporator. The actual COP was from 3.5 to 4.7 times lower than the Carnot COP. At 0 °C and 95% humidity, the ASHP’s performance was least favourable, with an average exergy efficiency of 0.21 and a COP of 1.49.

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来源期刊

Accounts of Chemical Research 化学-化学综合

CiteScore

31.40

自引率

1.10%

发文量

312

审稿时长

2 months

期刊介绍： Accounts of Chemical Research presents short, concise and critical articles offering easy-to-read overviews of basic research and applications in all areas of chemistry and biochemistry. These short reviews focus on research from the author’s own laboratory and are designed to teach the reader about a research project. In addition, Accounts of Chemical Research publishes commentaries that give an informed opinion on a current research problem. Special Issues online are devoted to a single topic of unusual activity and significance. Accounts of Chemical Research replaces the traditional article abstract with an article "Conspectus." These entries synopsize the research affording the reader a closer look at the content and significance of an article. Through this provision of a more detailed description of the article contents, the Conspectus enhances the article's discoverability by search engines and the exposure for the research.