A Combined System of Stirling Engine and Gas Turbine Based on LNG Cold Energy

Li Jing; Chen Xi; Zhang Hua

doi:10.3969/j.issn.0253-4339.2012.01.006

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A Combined System of Stirling Engine and Gas Turbine Based on LNG Cold Energy

更新时间：2024-07-18

- A Combined System of Stirling Engine and Gas Turbine Based on LNG Cold Energy
- Journal of Refrigeration Issue 1, (2012)
- 作者机构：
  
  上海理工大学
- 作者简介：
- 基金信息：
- DOI：10.3969/j.issn.0253-4339.2012.01.006
  CLC：
- Published：2012
- 稿件说明：
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Li Jing, Chen Xi, Zhang Hua. A Combined System of Stirling Engine and Gas Turbine Based on LNG Cold Energy[J]. Journal of refrigeration, 2012, (1).
DOI：

Li Jing, Chen Xi, Zhang Hua. A Combined System of Stirling Engine and Gas Turbine Based on LNG Cold Energy[J]. Journal of refrigeration, 2012, (1). DOI： 10.3969/j.issn.0253-4339.2012.01.006.

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。

Abstract

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.

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[1]西安交通大学,西安710049 [2]天津商学院

University of Shanghai for science and Technology

Chinese Association of Refrigeration

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