Browse Publications Technical Papers 2020-28-0037

Application of Phase Change Materials (PCM) for reducing cabin heat load 2020-28-0037

In regions like Indian Subcontinent, Gulf or Saharan & Sub-Saharan Africa, where the sunshine is abundant almost all year round, air-conditioning is an important aspect of vehicles (passenger cars, buses etc). Higher heat means higher cooling demand which means bigger AC system which in turn. Now AC compressor is a parasitic load on the engine like other auxiliaries. Upcoming emission norms will result in more stringent constraints on the power that can be made available to auxiliaries by engine. Moreover, one of the most frequent customer complaint in JD Power rating survey results of passenger vehicles is "AC cooling not fast enough". Hence, the proposed idea suggests a way reduce the air conditioning power consumption, without compromising on the cool-down performance by eliminating the heat load source itself. The best way to beat the heat and reduce cabin heat load is the stop the heat build-up itself. The present paper explores one such mean of reducing cabin heat build-up by leveraging latent heat properties of phase change materials and thus improving the air condition performance.With the help of a case study this paper aims at detailing comprehensive effect of phase change material and its application on the heat build-up in cabin, the air conditioning cooling performance, the time required to achieve comfort temperature, work of compression performed by AC compressor and COP. The results thus obtained provide a greater understanding with regards to application of phase change materials for reducing cabin heat build-up in automotive scenario.


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