Analysis of carbon emission associated with composite air source heat pumps in buildings

IF 6.4 2区工程技术 Q1 THERMODYNAMICS

Case Studies in Thermal Engineering Pub Date : 2025-03-19 DOI:10.1016/j.csite.2025.106033

Lin Zhe , Li Xueli , Lin Musong , Zhang Tianhu , Guo Qiang , Rao yandi , Liang Lin

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引用次数: 0

Abstract

The construction industry accounts for a significant portion of global energy consumption and carbon emissions. Air source heat pump (ASHP), as an environmentally friendly technology, have been widely employed in energy-efficient buildings to reduce carbon emissions. To ensure stability, ASHP is often used in conjunction with auxiliary heat sources to form composite cooling/heating systems. To evaluate the carbon emissions of ASHP with auxiliary heat source, a life cycle carbon emission model was developed in this study. The results show that the carbon emissions during building operation stage accounted for 70.5 % of total carbon emissions. The carbon emissions of single ASHP, ASHP-solar, ASHP-gas boiler, ASHP-coal boiler, and ASHP-electric boiler with different control strategies are compared. During the operation stage, the ASHP-gas boiler system has the lowest carbon emission. Taking into consideration renewable energy utilization, the ASHP-solar is preferred for the cooling/heating source of the building. Additionally, this study highlights that building location plays a crucial role in determining its associated carbon emissions. Several cities in China were studied, and the maximum levels carbon emissions are observed in Harbin while minimum levels are found in Chongqing.

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来源期刊

Case Studies in Thermal Engineering Chemical Engineering-Fluid Flow and Transfer Processes

CiteScore

8.60

自引率

11.80%

发文量

812

审稿时长

76 days

期刊介绍： Case Studies in Thermal Engineering provides a forum for the rapid publication of short, structured Case Studies in Thermal Engineering and related Short Communications. It provides an essential compendium of case studies for researchers and practitioners in the field of thermal engineering and others who are interested in aspects of thermal engineering cases that could affect other engineering processes. The journal not only publishes new and novel case studies, but also provides a forum for the publication of high quality descriptions of classic thermal engineering problems. The scope of the journal includes case studies of thermal engineering problems in components, devices and systems using existing experimental and numerical techniques in the areas of mechanical, aerospace, chemical, medical, thermal management for electronics, heat exchangers, regeneration, solar thermal energy, thermal storage, building energy conservation, and power generation. Case studies of thermal problems in other areas will also be considered.