Research and process optimization on frostless heat source tower heat pump system based on compound enthalpy enhancement

IF 3.5 2区工程技术 Q1 ENGINEERING, MECHANICAL

International Journal of Refrigeration-revue Internationale Du Froid Pub Date : 2025-06-14 DOI:10.1016/j.ijrefrig.2025.06.013

Lei Li , Huafu Zhang , Zhentao Zhang , Fuqiang Qi , Qiu Tu , Hongwei Wu , Junling Yang , Xuelai Zhang , Mingxin He

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引用次数: 0

Abstract

Due to the problems of high pollution, strong corrosion and high regenerative energy consumption in traditional heat source tower, a compound enthalpy enhancement heat source tower heat pump system using potassium formate solution as antifreeze and integrated mechanical vapor compression solution regeneration system is propose. Using Aspen Plus simulations, this work systematically investigates the impacts of six key parameters: air inlet temperature, relative humidity, airflow velocity, solution-air temperature differential, antifreeze concentration, and spray density on heating performance and energy efficiency. The results demonstrate 15-20% efficiency improvements under elevated ambient temperatures (>15°C) and high humidity conditions (>70% RH). Optimal operational ranges are established as 1.9-2.3 m/s airflow velocity and 14-18 m³/(m²·h) spray density with >5°C thermal differential. The main contributions include developing an environmentally sustainable antifreeze solution implementation framework and establishing practical engineering guidelines for parameter optimization in cold climate applications. These findings provide critical insights for enhancing heat pump system efficiency while reducing corrosion risks and regeneration energy consumption by approximately 25-30% compared to conventional systems.

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基于复合焓增强的无霜热源塔热泵系统研究与工艺优化

针对传统热源塔存在的高污染、强腐蚀和再生能耗高的问题，提出了一种以甲酸钾溶液为防冻液和一体化机械蒸汽压缩溶液再生系统的复合焓增强热源塔热泵系统。利用Aspen Plus模拟，本研究系统地研究了六个关键参数：进风口温度、相对湿度、气流速度、溶液-空气温差、防冻液浓度和喷雾密度对加热性能和能源效率的影响。结果表明，在较高的环境温度（>15°C）和高湿条件（>70% RH）下，效率提高了15-20%。最佳运行范围为气流速度1.9 ~ 2.3 m/s，喷雾密度14 ~ 18 m³/(m²·h)，热差>；5℃。主要贡献包括开发环境可持续的防冻解决方案实施框架，并为寒冷气候应用中的参数优化建立实用的工程指导方针。这些发现为提高热泵系统效率提供了重要的见解，同时与传统系统相比，降低了腐蚀风险和再生能源消耗约25-30%。

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来源期刊

International Journal of Refrigeration-revue Internationale Du Froid 工程技术-工程：机械

CiteScore

7.30

自引率

12.80%

发文量

363

审稿时长

3.7 months

期刊介绍： The International Journal of Refrigeration is published for the International Institute of Refrigeration (IIR) by Elsevier. It is essential reading for all those wishing to keep abreast of research and industrial news in refrigeration, air conditioning and associated fields. This is particularly important in these times of rapid introduction of alternative refrigerants and the emergence of new technology. The journal has published special issues on alternative refrigerants and novel topics in the field of boiling, condensation, heat pumps, food refrigeration, carbon dioxide, ammonia, hydrocarbons, magnetic refrigeration at room temperature, sorptive cooling, phase change materials and slurries, ejector technology, compressors, and solar cooling. As well as original research papers the International Journal of Refrigeration also includes review articles, papers presented at IIR conferences, short reports and letters describing preliminary results and experimental details, and letters to the Editor on recent areas of discussion and controversy. Other features include forthcoming events, conference reports and book reviews. Papers are published in either English or French with the IIR news section in both languages.