Waste Heat Recovery from Condenser by using Phase Change Material
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Abstract
Latent heat thermal energy storage is a promising technology because it can store more energy than conventional heat energy storage systems. Today, most of the waste heat is released into the atmosphere from different sources. The main emphasis of this study is to recover the waste heat produced by the condenser in the refrigeration system. The charging process of a phase change material (PCM) in spiral heat exchanger is studied for thermal storage purposes. In this experiment, waste heat is collected using Mystril alcohol (CH3(CH2)12CH2OH) phase-change material (PCM). A phase transition material is a substance with a high latent heat of transformation that changes into a new phase at a particular temperature. However, this paper shows how coil type tube can be employed as a tubulator to enhance its thermal characteristics including Nusselt (Nu) number and thermal performance. At different temperatures and mass flow rate, the amount of heat absorbed by PCM and that heat transferred to the cold water is analysed.
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