A significant portion of the energy in buildings is used for heating and cooling. The European directive (EPBD-Recast) promotes higher levels of thermal insulation and lightweight buildings in order to reduce the negative environmental impacts from this energy use. The biggest disadvantage of lightweight buildings is their low thermal mass. In recent years, PCM, which save energy by increasing the thermal mass of lightweight buildings and store energy as latent heat in thermal mass, have attracted great interest as an alternative and important views are given that they can reduce the energy loads of buildings. The aim of this study is to determine to what extent energy loads can be improved by using PCM in exterior wall constructions in the building envelope. In this context, this study is composed of two stages. In the first stage, data were obtained under the titles of usage places, types, joining techniques and used simulation programs of phase change materials with the literatüre research. For this purpose, BioPCMs with melting points of 21 0C and 23 0C were used in thicknesses of 24, 36, 48 and 60 mm and applied to the inner surface of the wall construction with 15, 25, 35 and 45 mm air gaps. The scenarios of the wall construction created were used in the exterior wall constructions of a single-storey residence with a floor area of 150 m2, which was hypothetically designed with the Design Builder simulation program, using the climate data of the province of Trabzon with a moderate-humid climate. Annual total heating-cooling energy loads of the scenarios were calculated. As a result of the study, it has been determined that ventilated wall constructions developed with the use of PCM can provide an improvement between 2% and 10% in building energy loads, and most importantly, it is of great importance that PCMs are developed as a low cost and sustainable material suitable for use in the building envelope in all climatic conditions.
Phase change material Ventilate dexterior wall Latent heat Energy load Energy simulation
Faz değiştiren malzeme Havalandırmalı dış duvar Gizli ısı Enerji yükü Enerji simülasyonu
Birincil Dil | Türkçe |
---|---|
Konular | Mühendislik |
Bölüm | Makaleler |
Yazarlar | |
Yayımlanma Tarihi | 30 Nisan 2022 |
Yayımlandığı Sayı | Yıl 2022 |