TIAN Hua, JING Dongzhan, WANG Xuan, et al. Part-load performance analysis of cogeneration system for engine waste heat recovery[J]. CIESC Journal, 2018, (2): 792-800.
TIAN Hua, JING Dongzhan, WANG Xuan, et al. Part-load performance analysis of cogeneration system for engine waste heat recovery[J]. CIESC Journal, 2018, (2): 792-800.DOI: 10.11949/j.issn.0438-1157.20170903.
Recovering exhaust waste heat of gas fuel engines is an effective way to improve energy utilization rate. A cogeneration system inclusive of a steam Rankine cycle and an absorption refrigeration cycle is proposed to recover exhaust waste heat of a gas fuel engine. An off-design simulation model is established to analyze part-load performance of the cogeneration system in connection with the characteristics of variable engine load. The results show that the equivalent efficiency of cogeneration system is reduced by 2.14% when the engine load drops from 100% to 40%. Moreover
the improvement of system's total efficiency reduces by only 1.64%. Therefore
the cogeneration system shows excellent part-load adaptability. It should be noted that the absorption refrigeration cycle cannot operate normally under 40% engine load due to the crystallization of H2O-LiBr solution
which can provide the reference for the practical operation.