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The exponential increase in population growth has led to increase in high consumption of natural resources, which directly and indirectly is the source of liberation of CO2 in the atmosphere. Along with the construction industry, which is also a major source of liberation of greenhouse gases, active cooling devices such as the air conditioners & refrigerators also become the major source of emission of greenhouse gases. In order to control the room temperature by passive method, Phase Changing Materials (PCM) can be used in buildings. PCMs or latent heat storage materials are generally materials with large specific latent heat capacity. PCMs used in buildings will typically melt and solidify within a range of 18-30C and are normally integrated in the building fabric. They can be used in the built environment to reduce internal temperature change by storing latent heat in the solid-liquid or liquid-gas phase change of a material. PCMs are found to store 5 to 14 times more thermal energy per unit volume than conventional thermal storage materials. The main objective of this project is to obtain ambient temperature within buildings and to reduce the usage of the active cooling machineries which releases greenhouse gases responsible for earth’s temperature rise. Telkes and Tyaghiare the first researchers, who have undertaken the work on application of PCMs in buildings in 1975 and concluded that they can be incorporated with ordinary building materials. Organic PCMs like Paraffin wax and Glycerine are used and infiltrated with cement mortar. To prevent the leakage of these PCMs Perlite is used. The objective of the present work is to study the effects of various types of PCM including Glycerine, Paraffin wax and Perlite with Paraffin wax in control of the room temperature from mortar plastered brick masonry model and comparing the results by simulating in software. Keywords—Phase change materials; passive cooling in building; paraffin wax; glycerine; perlite

Passive Cooling of Building using Glycerine and Paraffin Wax with Perlite as Phase Changing Materials