摘要利用LNG冷能具有较好的节能潜力和经济效益,通过流程的创新设计,提出了一种将LNG冷能用于燃气轮机和斯特林发动机的联合系统。基于热力学第一、第二定律,对联合系统进行热力学分析,结果表明:在环境温度35℃条件下,联合系统的输出功率为5715.48kW,热效率为31.62%,效率为43.65%;相比燃气轮机系统和直接冷却进气系统,联合系统的输出功率分别提高了7.84%和0.78%,热效率分别提高了3.16%和1.18%,效率分别提高了4.23%和1.63%。联合系统在不同环境温度下,可将燃气轮机的进气温度降低10℃左右,系统的输出功率和效率随着进气温度的降低均有所提高。Utilizing cold energy of LNG would bring good economic benefits.A combined system of Stirling engine and gas turbine for recovering LNG cold energy is put forward.Based on the first and second laws of thermodynamics,the combined system is analyzed in detail.The results show that in the 35℃ environment,the output power of combined system is 5715.48kW,the thermal efficiency is 31.62%,and the exergy efficiency is 43.65%.Compared with the gas turbine system and the direct cooling inlet air system,the output power of combined system will respectively increase 7.84% and 0.78%,the thermal efficiency will increase 3.16% and 1.63%,and the exergy efficiency will increase 4.23% and 1.63%.At different environment temperatures,the inlet air temperature will decrease about 10℃ in the combined system,and the output power and efficiencies will increase with the decreasing of inlet air temperature.
机构地区上海理工大学
出处《制冷学报》 CAS CSCD 北大核心 2012年第1期6-9,共4页Journal of Refrigeration
基金国家自然科学基金(50906054)资助项目 上海市教育委员会科研创新项目(10YZ96) 上海市教育委员会重点学科建设项目(J50502) 高等学校博士学科点专项科研基金(20093129129996)资助~~
关键词热工学 LNG 热力学分析 斯特林发动机 燃气轮机Pyrology LNG Thermodynamic analysis Stirling engine Gas turbine
分类号
TE09 [石油与天然气工程] TE646 [石油与天然气工程—油气加工工程]
