Cost-optimal dimensioning of hybrid heat pump systems utilizing waste heat from hydrogen production for a kindergarten in cold climate

IF 7.1 2区 工程技术 Q1 CONSTRUCTION & BUILDING TECHNOLOGY Energy and Buildings Pub Date : 2025-02-06 DOI:10.1016/j.enbuild.2025.115430
Yuchen Ju , Xinyi Hu , Juha Jokisalo , Risto Kosonen , Tianchen Xue , Altti Meriläinen , Antti Kosonen
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Abstract

The growing need for environmentally-friendly energy solutions encourages the integration of various renewable energy sources in buildings. District heating (DH) systems, widely applied in northern and central European countries, are efficient in transforming and integrating renewable energy sources in large-scale energy systems. With the growth of hydrogen (H2) production, there is great potential for utilizing H2 production excess heat. However, the cost-optimal dimensioning of hybrid heat pump systems considering H2 production excess heat is still in its infancy. This study examined the cost-optimal dimensioning of energy systems based on the 25-year life cycle cost (LCC). Two types of heat pumps, ground source heat pump (GSHP) and air-to-water heat pump (A2WHP) equipped with photovoltaic (PV) panels have been used in tandem with a DH system to provide heat to a kindergarten in the Nordic region. The comparison included two DH tariffs: the commercial DH prices from a DH company and the zero-emission DH price derived from waste heat generated during H2 production. The results found that the GSHP with PV and waste heat from H2 production has the lowest LCC. The utilization of H2 production waste heat can decrease up to 10 % of HP dimensioning because of a lower DH price in the heating season.
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在寒冷气候下,为幼儿园利用氢气生产余热的混合热泵系统的成本优化尺寸
对环境友好型能源解决方案日益增长的需求鼓励了各种可再生能源在建筑中的整合。区域供热(DH)系统广泛应用于北欧和中欧国家,在大规模能源系统中对可再生能源进行有效的转化和整合。随着氢气产量的增长,氢气生产余热的利用潜力巨大。然而,考虑H2生产余热的混合热泵系统的成本优化尺寸仍处于起步阶段。本研究探讨了基于25年生命周期成本(LCC)的能源系统成本最优维度。两种类型的热泵,地源热泵(GSHP)和空气-水热泵(A2WHP)配备光伏(PV)板与DH系统串联使用,为北欧地区的一家幼儿园提供热量。比较包括两种DH关税:DH公司的商业DH价格和H2生产过程中产生的余热产生的零排放DH价格。结果表明,利用光伏和制氢余热的地源热泵的LCC最低。由于采暖季节的DH价格较低,H2生产余热的利用率可以降低高达10%的HP尺寸。
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来源期刊
Energy and Buildings
Energy and Buildings 工程技术-工程:土木
CiteScore
12.70
自引率
11.90%
发文量
863
审稿时长
38 days
期刊介绍: An international journal devoted to investigations of energy use and efficiency in buildings Energy and Buildings is an international journal publishing articles with explicit links to energy use in buildings. The aim is to present new research results, and new proven practice aimed at reducing the energy needs of a building and improving indoor environment quality.
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