Airtightness and energy impact of air infiltration in residential buildings in Spain

IF 1.1 4区工程技术 Q3 CONSTRUCTION & BUILDING TECHNOLOGY

International Journal of Ventilation Pub Date : 2020-06-30 DOI:10.1080/14733315.2020.1777029

Irene Poza-Casado, Alberto Meiss, M. Padilla-Marcos, Jesús Feijó-Muñoz

引用次数: 12

Abstract

Abstract Addressing the airtightness of the building envelope is key to achieve thermal comfort, good performance ofventilation systems and to avoid excessive energy consumption. Previous studies have estimated an energy impact of infiltration on the heating demand between 2 and 20 kW h/(m2 y) in regions with temperate climates. In Spain, this issue has not yet been addressed in depth. This study aims to assess the energy impact of uncontrolled airflows through the envelope in residential buildings in Spain. For this purpose, airtightness results of more than 400 blower door tests have been analysed. Multi-family and single-family dwellings built in several periods and located in nine regions with different climate characteristics have been studied. Infiltration was found to have an energy impact in the range 2.43–19.07 kW h/(m2 y) for the heating demand, whereas it is not so significant regarding the cooling demand. The obtained results show great potential for energy saving in the country.

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西班牙住宅建筑空气渗透的气密性及能量影响

摘要:解决建筑围护结构的气密性是实现热舒适、通风系统性能良好和避免过度能源消耗的关键。以前的研究估计，在温带气候地区，渗透对供暖需求的能量影响在2至20 kW h/(m2 y)之间。在西班牙，这个问题还没有得到深入的解决。本研究旨在评估通过西班牙住宅建筑围护结构的不受控制的气流对能源的影响。为此，对400多个风机门试验的气密性结果进行了分析。研究了建于不同时期、分布在九个不同气候特征地区的多户和单户住宅。研究发现，渗透对供暖需求的能量影响范围在2.43-19.07 kW h/(m2 y)之间，而对制冷需求的影响则不那么显著。所得结果表明，在我国具有很大的节能潜力。

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

International Journal of Ventilation CONSTRUCTION & BUILDING TECHNOLOGY-ENERGY & FUELS

CiteScore

3.50

自引率

6.70%

发文量

审稿时长

>12 weeks

期刊介绍： This is a peer reviewed journal aimed at providing the latest information on research and application. Topics include: • New ideas concerned with the development or application of ventilation; • Validated case studies demonstrating the performance of ventilation strategies; • Information on needs and solutions for specific building types including: offices, dwellings, schools, hospitals, parking garages, urban buildings and recreational buildings etc; • Developments in numerical methods; • Measurement techniques; • Related issues in which the impact of ventilation plays an important role (e.g. the interaction of ventilation with air quality, health and comfort); • Energy issues related to ventilation (e.g. low energy systems, ventilation heating and cooling loss); • Driving forces (weather data, fan performance etc).