Enviroeconomic optimization of insulation thickness for building exterior walls through thermoeconomic and life cycle assessment analysis

IF 6.4 2区工程技术 Q1 THERMODYNAMICS

Case Studies in Thermal Engineering Pub Date : 2024-12-06 DOI:10.1016/j.csite.2024.105606

Mehmet Kadri Akyüz

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Abstract

The economic optimum insulation thicknesses (OIT) for heated buildings in five different climate regions in Turkiye were determined, and the energy, cost, and life cycle-based environmental performances were analyzed. Calculations were performed using three different fuels (natural gas, fuel oil, and coal) and four different insulation materials: expanded polystyrene (EPS), rock wool (RW), glass wool (GW), and extruded polystyrene (XPS). This study utilized a thermoeconomic approach to evaluate energy and economic performance and a life cycle assessment (LCA) approach to assess environmental impacts, ensuring a comprehensive analysis of insulation strategies. The impacts of climate change factors were expressed as kg CO2 equivalent (kgCO2eq) using 100-years global warming potential (GWP). The annual energy savings varying from 18.41 to 258.15 kWh/(year.m2) for the warmer and the colder climate zones, respectively. The maximum avoided environmental impact (AEI) due to energy saved from thermal insulation was 144.11 kgCO2eq/(year.m2) for coal and RW in coldest climate zone, while the minimum AEI was 5.31 kgCO2eq/(year.m2) for natural gas and XPS in warmest climate zone. Among insulation materials, EPS offers the shortest environmental payback period, whereas RW requires the longest, highlighting material-specific trade-offs. In all climate zones, environmental payback periods are much shorter than economic ones.

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确定了土耳其五个不同气候区供暖建筑的最佳经济保温厚度（OIT），并分析了能源、成本和基于生命周期的环境性能。计算使用了三种不同的燃料（天然气、燃油和煤）和四种不同的保温材料：发泡聚苯乙烯（EPS）、岩棉（RW）、玻璃棉（GW）和挤塑聚苯乙烯（XPS）。这项研究采用热经济学方法评估能源和经济性能，采用生命周期评估方法评估环境影响，确保对保温策略进行全面分析。气候变化因素的影响采用 100 年全球升温潜能值（GWP），以千克二氧化碳当量（kgCO2eq）表示。气候温暖区和气候寒冷区的年节能量分别为 18.41 至 258.15 千瓦时/（年.平方米）。在最寒冷气候区，煤和 RW 的隔热节能所避免的最大环境影响（AEI）为 144.11 kgCO2eq/（year.m2），而在最温暖气候区，天然气和挤塑聚苯乙烯所避免的最小环境影响（AEI）为 5.31 kgCO2eq/（year.m2）。在各种隔热材料中，发泡聚苯乙烯的环境投资回收期最短，而 RW 的环境投资回收期最长，这突出表明了材料之间的利弊权衡。在所有气候区，环境投资回收期都比经济投资回收期短得多。

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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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.