Journal of Northeastern University(Natural Science) ›› 2022, Vol. 43 ›› Issue (6): 827-834.DOI: 10.12068/j.issn.1005-3026.2022.06.010

• Materials & Metallurgy • Previous Articles     Next Articles

Construction and Optimization of CCHP System Coupled with LNG Pressure Energy

FENG Ming-jie1, WANG Deng-liang1, ZHAO Mei-yu2, ZHOU Le1   

  1. 1. School of Metallurgy, Northeastern University, Shenyang 110819, China; 2. Technology Center, Beijing Jingyi Tianhe Intelligent Equipment Co., Ltd, Beijing 100079, China.
  • Revised:2021-07-25 Accepted:2021-07-25 Published:2022-07-01
  • Contact: WANG Deng-liang
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Abstract: A novel type of combined cooling,heating and power(CCHP)system coupled with LNG pressure energy has been proposed. Taking an industrial park in Xi ′an as the research object, an optimization model with the objective of economic optimization was established by using simplex algorithm. In addition, some parameters, such as energy efficiency, exergy efficiency and CO2 emission per unit output value were taken as evaluation indexes to comprehensively evaluate the new system, and the influence of feed-in tariff on the output of various equipment and system performance was analyzed. The performance of the novel CCHP system was compared with that of conventional CCHP system, and the CO2 emission per unit output value and annual cost of the system were reduced by 29.82g/(kW·h) and 2.9×106 CNY, respectively. Primary energy utilization and exergy efficiency increased by 4.05% and 0.44%, respectively.

Key words: pressure energy; CCHP(combined cooling,heating and power); operation strategy; total annual expenses

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