Industrial Solar System for Beer Brewary in Gwangju Korea: Long Term Performance Prediction of Evacuated Tubular Solar Collector for Industrial Process Heat (original) (raw)

한국태양에너지학회 2004 Proceedings Isea Asia Pacific, 2004

Abstract

Hot water supply of 85℃ is needed to bottle washer in the beer brewing process (Kalogirou, 2003). For this purpose it is more appropriate to choose an evacuated tubular solar collector (ETSC) system rather than the flat plate types which are mostly used to produce water temperatures around 60℃ for domestic use (KIER Report, 2004; Kalogirou, 2004; Niemann et al., 1997). In the present study, simulation was performed through the system modeling for the process heat system installed in beer brewery of Gwangju Korea. Simulation model of TRNSYS was confirmed first, and four days of examination period from August 8 to 11 at year 2003 were taken. Here it can be observed that analysis results are in good agreement with experimental data. Full one year simulation was conducted for the prediction of long term performance of ETSC system in Gwangju. The system was analyzed with TRNSYS using the hourly weather data of the Gwangju. And additional simulations were conducted for one year term under the weather conditions of four locations as Daejeon, Busan, Seoul, and Daegu as well. Based on these TRNSYS simulations, long term thermal performance of the ETSC system has been predicted for various weather conditions. The system efficiency and heat transfer rate by hot water supply were obtained, and their effects on the long term performance of the system were compared and analyzed.

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