LNG动力渔船的冷能利用技术初探

doi:10.11949/j.issn.0438-1157.20150697

化工学报 ›› 2015, Vol. 66 ›› Issue (S2): 50-55.DOI: 10.11949/j.issn.0438-1157.20150697

LNG动力渔船的冷能利用技术初探

孙楠楠, 谭宏博, 张杨, 厉彦忠

西安交通大学制冷及低温工程系, 陕西西安 710049

收稿日期:2015-05-25 修回日期:2015-06-01 出版日期:2015-08-31 发布日期:2015-08-31
通讯作者: 谭宏博
基金资助:
国家自然科学基金项目(51306137)。

Exploration of LNG cold energy utilization system for LNG-fueled fishing vessels

SUN Nannan, TAN Hongbo, ZHANG Yang, LI Yanzhong

Department of Refrigerating and Cryogenics Engineering, Xi'an Jiaotong University, Xi'an 710049, Shaanxi, China

Received:2015-05-25 Revised:2015-06-01 Online:2015-08-31 Published:2015-08-31
Supported by:
supported by the National Natural Science Foundation of China(51306137).

摘要/Abstract

摘要：

液化天然气(LNG)动力渔船推广前景广阔,为提高其LNG冷能的利用效率,对比分析了在船舶上利用LNG冷能的冷库和发电两种方案的利弊,并在此基础上提出了一种新的LNG冷能利用系统。通过热力学分析,获得了不同有机朗肯循环(ORC)冷凝温度、蒸发温度和载冷剂出口温度条件下系统的冷能利用率及效率。分析结果表明,系统冷能利用率随朗肯循环冷凝温度的降低、蒸发温度的升高而有显著提高;随载冷剂出口温度升高,系统冷能利用率稍有提高,但载冷剂流量显著增大。该系统冷能利用率及效率最大值分别达200.1%和28.6%,可实现LNG冷能利用率的大幅提升,节能效果显著。

关键词: 液化天然气, 冷能回收, (火用), 渔船, 冷库

Abstract:

Liquefied natural gas(LNG)fueled fishing vessels have a wide horizon of development,in order to improve the LNG cold energy utilization efficiency of them,this paper compared the pros and cons of recycling LNG cold energy through refrigerated warehouse and power generation,and proposed a new LNG cold energy utilization system for LNG-fueled fishing vessels.The utilizing efficiency of cold energy and exergy in different Rankine cycle condensation temperature,evaporation temperature and secondary refrigerant outlet temperature were obtained in this paper.The results show that the utilizing efficiency of cold energy increases significantly when Rankine cycle condensation temperature decreases or evaporation temperature rises.As secondary refrigerant outlet temperature increases,the utilizing efficiency of cold energy increases slightly,but the flow rate of secondary refrigerant increases significantly.In this system,the maximum cold energy utilization efficiency and exergy utilizing efficiency can respectively reach 200.1% and 28.6%,improved significantly and energy-saving effect is remarkable.

Key words: liquefied natural gas, cold energy recovery, exergy, fishing vessel, refrigerated warehouse

中图分类号:

TB69
TQ026.4

孙楠楠, 谭宏博, 张杨, 厉彦忠. LNG动力渔船的冷能利用技术初探[J]. 化工学报, 2015, 66(S2): 50-55.

SUN Nannan, TAN Hongbo, ZHANG Yang, LI Yanzhong. Exploration of LNG cold energy utilization system for LNG-fueled fishing vessels[J]. CIESC Journal, 2015, 66(S2): 50-55.

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LNG动力渔船的冷能利用技术初探

Exploration of LNG cold energy utilization system for LNG-fueled fishing vessels

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