B. Nageswara Rao,K. Pavan Kumar Reddy,M. Srinivasa Reddy,T. Sreedhar,



Phase Change Material – PCM,Latent Heat of Fusion – LHF, Sensible Heat - SH ,


In the present work investigations have been carried out by simulation to study and examine the roof of a building in corporating PCM for thermal comfort in residential building. Two models were used and the theoretical performance of both is compared by considering one as the reference case. A PCM integrated roof has the potential to maintain a fairly constant temperature within the room due to its huge heat absorbing and storing capacity in a passive manner. Whereas, the ceiling temperatures always fluctuate in a Non-PCM room (RCC room) throughout the day and every day. The results of ceiling temperatures, heat flux and heat transfer rate in the Non-PCM and PCM room were observed and better results are found for PCM Room.


I Agyenim F, Eames P, Smyth M. Heat transfer enhancement in medium temperature thermal energy storage system using a multitube heat transfer array. Renewable Energy 2010;35:198–207.
II Arkar C, Vidrih B, Medved S. Efficiency of free cooling using latent heat storage integrated into the ventilation system of a low energy building. International Journal of Refrigeration 2007;30:134–43.
III Haoshan Ge, Haiyan Li,ShengfuMei,JingLiu,Low melting point liquid metal as a new clau of PCM; An emerging frontier in energy area-Renewable & Sustainable energy Reviews.21(2013)331-346.
IV Kandasamy R, Wang XQ, Mujumdar AS. Transient cooling of electronics using phase change material (PCM)-based heat sinks. Applied Thermal Engineering 2008;28:1047–57.
V Mondal S. Phase change materials for smart textiles – An overview. Appl ThermEng2008;28:1536–50.
VI Pasupathy A, Velraj R, Seeniraj RV. Effect of double layered phase change materials in building roof for year round thermal management. Energy and Building 2008;40(3):193–203.
VII Santamouris M, Pavlo K, Synnefa K, Niachou K, Kolokotsa D. Recent progress on passive cooling techniques, advanced technological developments to improve survivability levels in low income households. Energy and Buildings 2007;39(7):859–66
VIII Sari A, Kaygusuz K. Thermal performance of a eutectic mixture of lauric and stearic acids as PCM encapsulated in the annulus of two concentric pipes. Solar Energy 2002;72:493–504.
IX Tgagi.VV ,Buddi.D. Thermal cycling testing of calcium chloride hexa hydrate as a possible PCM for latent heat storage. Solar energy mater solar cell 2008:92:891-9.

View Download