Abstract

CONTROL OF TEMPERATURE IN BIO-DIGESTER USING PHASE CHANGE MATERIAL (PCM)

M.Annal Rajam, S.Rajakumar

Volume: 6 Issue: 1 2016

Abstract:

A comprehensive review of control and maintenance of temperature in bio digestion process is presented in this paper. Maintaining a temp level of about 40 to 60⁰C, the optimum temperature for thermophilic bacteria’s growth and activity, is crucial for obtaining the best results with respect to biogas production in bio-digesters. This study investigates the utilization of phase change material (PCM) to control and maintain the optimum temperature of 45⁰C around it. For purposes of this study, a dome type digester is chosen as experimental set up, which is then to be incorporated with PCM around the walls. In this review, the rate of gas production is found to be increased and the retention time is decreased with the elimination of insulations. The main objective of controlling the process temperature to obtain a high yield of biogas is highlighted in this paper.

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