@ARTICLE{Prakash_D._Transient_2013, author={Prakash, D. and Ravikumar, P.}, number={No 4}, journal={Archives of Civil Engineering}, pages={483-497}, howpublished={online}, year={2013}, publisher={WARSAW UNIVERSITY OF TECHNOLOGY FACULTY OF CIVIL ENGINEERING and COMMITTEE FOR CIVIL ENGINEERING POLISH ACADEMY OF SCIENCES}, abstract={In this paper, transient analysis on heat transfer across the residential building roof having various materials like wood wool, phase change material and weathering tile is performed by numerical simulation technique. 2-dimensional roof model is created, checked for grid independency and validated with the experimental results. Three different roof structures are included in this study namely roof with (i). Concrete and weathering tile, (ii). Concrete, phase change material and weathering tile and (iii). Concrete, phase change material, wood wool and weathering tile. Roof type 3 restricts 13% of heat entering the room in comparison with roof having only concrete and weathering tile. Also the effect of various roof layers’ thickness in the roof type 3 is investigated and identifi ed that the wood wool plays the major role in arresting the entry of heat in to the room. The average reduction of heat is about 10% for an increase of a unit thickness of wood wool layer.}, type={Artykuły / Articles}, title={Transient analysis of heat transfer across the residential building roof with PCMand wood wool- A case study by Numerical simulation approach}, URL={http://journals.pan.pl/Content/83906/mainfile.pdf}, keywords={heat transfer, Residential building roof, Phase change material, Wood wool, Numerical simulation}, }