An experimental investigation of PCM based thermal energy storage system using diesel engine exhaust-gas. (2017)

• Record Type: Journal Article
• Authors: Reddy, R. Meenakshi; Maheswari, C. Uma; Reddy, E. Siva; Reddy, K. Krishna
• Is Part Of: International journal of renewable energy technology. Volume 8:Number 3/4(2017)
• Page Start: 239
• Page End: 253
• Publication Date: 2017
• Subjects: waste heat recovery -- thermal energy storage system -- TESS -- phase change material -- PCM -- latent heat -- concentric cylinder; Renewable energy sources -- Periodicals; 621.04205
• Languages: English
• ISSNs: 1757-3971

Abstract

Waste heat recovery is one of the energy conservation options. About 30% of heat produced by diesel engines that are coupled to electric power generators are carried away by exhaust gases as waste part of the heat energy produced. In the present work, CFD and experimental analysis was made to study the utilisation of the waste heat energy carried by exhaust gases to obtain hot water used for various purposes in commercial buildings, hostels, etc. The effect of fins arranged on the outer periphery of inner cylinder is also studied. Fin arrangement increases the heat transfer rate by reducing the charging time of TESS. Theoretical, numerical and experimental results were compared and found that the values are closer about 10%. The performance of the TESS is evaluated by calculating performance characteristics such as charging and discharging rates and 14% of heat can be recovered from the 30% energy being wasted.