Energy, exergy, economic, and environmental analysis of waste heat source heat pump industrial steam generation system

IF 10.9 1区工程技术 Q1 ENERGY & FUELS Energy Conversion and Management Pub Date : 2025-04-15 Epub Date: 2025-02-21 DOI:10.1016/j.enconman.2025.119662

Hang Yin, Shicheng Ying, Guangbin Liu, Qichao Yang, Yuanyang Zhao, Liansheng Li

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Abstract

High-temperature steam is a vital energy for heating, washing, drying, and other industrial processes primarily generated by special coal-fired boilers. The heat pump coupled with the steam compressor is a promising steam generation system due to its high efficiency, high heating temperature, and low pollution. In this paper, a mathematical model of a waste heat source heat pump industrial steam generation system (WHPSG) is developed. The system performance is analyzed using energy, exergy, economy, and environment methods when R245fa, R600, and R601 are selected. The results demonstrate better overall system performance at high waste heat temperature and low condensing temperature than at low waste heat or high condensing temperature. Compared to R245fa and R600, the COP_sys using R601 increased by 3.4% and 3.8%, and power consumption per unit mass flow rate of steam decreased by 3.3% and 3.7. The condensing temperature influences system performance obviously, while the heat pump compressor and steam compressor account for a large percentage of exergy destruction. The system with R601 has the largest total exergy efficiency, which is higher than R245fa and R600 by about 3.0% and 3.2% respectively. The good economic and environmental benefits showed it can be used for steam generation.

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余热源热泵工业蒸汽发生系统的能源、能源、经济和环境分析

高温蒸汽是加热、洗涤、干燥和其他工业过程的重要能源，主要由特殊的燃煤锅炉产生。热泵与蒸汽压缩机联用具有效率高、加热温度高、污染小等优点，是一种很有前途的蒸汽发生系统。本文建立了废热源热泵工业蒸汽发生系统的数学模型。选用R245fa、R600和R601时，采用能源、火用、经济和环境等方法对系统性能进行分析。结果表明，在高余热温度和低冷凝温度下，系统整体性能优于低余热温度和高冷凝温度下的系统。与R245fa和R600相比，使用R601的COPsys分别提高了3.4%和3.8%，单位质量蒸汽流量的电耗分别降低了3.3%和3.7%。冷凝温度对系统性能影响明显，而热泵压缩机和蒸汽压缩机占火用破坏的比例较大。采用R601的系统总火用效率最高，比R245fa和R600分别高出约3.0%和3.2%。具有良好的经济效益和环境效益，可用于蒸汽发电。

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来源期刊

Energy Conversion and Management 工程技术-力学

CiteScore

19.00

自引率

11.50%

发文量

1304

审稿时长

17 days

期刊介绍： The journal Energy Conversion and Management provides a forum for publishing original contributions and comprehensive technical review articles of interdisciplinary and original research on all important energy topics. The topics considered include energy generation, utilization, conversion, storage, transmission, conservation, management and sustainability. These topics typically involve various types of energy such as mechanical, thermal, nuclear, chemical, electromagnetic, magnetic and electric. These energy types cover all known energy resources, including renewable resources (e.g., solar, bio, hydro, wind, geothermal and ocean energy), fossil fuels and nuclear resources.