LFG와 LNG 혼합연료의 조성에 따른 다관형 열교환기에서의 열전달 특성

초록

The purpose of this study is to investigate the heat transfer characteristics of combustion gas of LFG and a mixture of LFG and LNG. A pilot combustion system is constrcted in order to conduct the experiments. Tube bundle type heat exchangers with vertical and horizontal baffles are used, and the experiment is carried out for different operating conditions, the heating value, the concentration of methane (44.5%, 54.5%). The results show that the Nusselt number of LNG is higher than that of LFG at the same Reynolds number, and in case LFG, the Nusselt number of the mixture of LNG and LFG is larger than that of LFG alone.