Optimisation of the integrated Phase Change Material blind system for double skin fa(c)ade buildings-a simulation study
Double skin facades(DSFs)are widely recognised as sustainable design elements for reducing energy consumption in buildings.However overheating problems in DSFs in warm seasons have been reported in various studies which may cause additional increase in cooling loads in buildings.Although various thermal management strategies and devices are available,they do have some limitations and cannot be readily used for enhancing the performance of DSFs.Previous study has developed an integrated phase change material(PCM)blind system for double skin fa(c)ade and has demonstrated some level of capacity to mitigate the overheating phenomenon in DSF.This paper focuses on the optimisation of such integrated PCM blind systems for DSF buildings by conducting simulation study.The numerical models were validated with experimental data in a DSF test facility integrated with the developed prototype.Temperature and heat flux profiles in the DSF integrated with the PCM blind with different positions in cavity and vertical inclinations of blades were simulated and compared by using computational fluid dynamics(CFD)method.An analysis of different properties of PCM was also carried out in consideration of the effects of various types of PCM for applying in different climatic regions.As a result,the air temperature in DSF cavity can be stabilised below 38℃ in warm seasons in terms of proper combinations of factors including position in cavity,blade tilt angle,PCM type,and direction.The performance of the current integrated PCM blind system can be optimised by carefully designing the geometry of the system and improving the energy storage efficiency of the PCM.Nevertheless,further experimental investigation and comparison should be conducted in future study.
Double skin facade PCM blind system CFD
Yilin LI Jo DARKWA Georgios KOKOGIANNAKIS Weiguang SU
School of Environment and Architecture,University of Shanghai for Science and Technology,516 Jungong Faculty of Engineering,The University of Nottingham,University Park,Nottingham,NG7 2RD,UK School of Mechanical,Materials and Mechatronic Engineering,Sustainable Building Research Centre,Univ School of Mechanical & Automotive Engineering,Qilu University of Technology(Shandong Academy of Scie
国际会议
武汉
英文
500-508
2018-08-21（万方平台首次上网日期，不代表论文的发表时间）