Energy efficiency and thermal performance of lightweight steel-framed (LSF) construction: A review

RENEWABLE & SUSTAINABLE ENERGY REVIEWS

卷:78

Review

Soares, N.^1,2  Santos, P.²  Gervasio, H.²  Costa, J. J.¹  da Silva, L. Simoes² 

[1] Univ Coimbra, Dept Mech Engn, ADAI, LAETA, Polo 2,Rua Luis Reis Santos, P-3030788 Coimbra, Portugal

[2] Univ Coimbra, Dept Civil Engn, ISISE, Rua Luis Reis Santos, P-3030788 Coimbra, Portugal

关键词: Buildings;    Lightweight steel-framed (LSF);    Energy performance;    Thermal energy storage;    Phase change materials (PCM);    Life cycle assessment (LCA);   

DOI  :  10.1016/j.rser.2017.04.066

来源: Elsevier

【 摘 要 】

The improvement of the use of renewable energy sources, such as solar thermal energy, and the reduction of energy demand during the several stages of buildings' life cycle is crucial towards a more sustainable built environment. This paper presents an overview of the main features of lightweight steel-framed (LSF) construction with cold-formed elements from the point of view of life cycle energy consumption. The main LSF systems are described and some strategies for reducing thermal bridges and for improving the thermal resistance of LSF envelope elements are presented. Several passive strategies for increasing the thermal storage capacity of LSF solutions are discussed and particular attention is devoted to the incorporation of phase change materials (PCMs). These materials can be used to improve indoor thermal comfort, to reduce the energy demand for air-conditioning and to take advantage of solar thermal energy. The importance of reliable dynamic and holistic simulation methodologies to assess the energy demand for heating and cooling during the operational phase of LSF buildings is also discussed. Finally, the life cycle assessment (LCA) and the environmental performance of LSF construction are reviewed to discuss the main contribution of this kind of construction towards more sustainable buildings.

【 授权许可】

Free