设为首页 加入收藏 微信登陆
首页
资讯
信息栏
LNG技术
工程制造
优化设计
仪电控
化工环保
LNG应用
文献
图库
商品
企业库
供需信息
专题
英文
联系
搜索: 全站搜索 文章 图片 文献 求职简历 商品 企业招聘 企业 产品信息
栏目:News
Analysis of power cycle based on cold energy of LNG and low-grade heat source
2013-06-03 15:30:17 冰冷科技 搜索 】 浏览:2012次 评论:0
摘要: It is important for the sustainable development of economy to exploit new energy. The utilization of lowgradeheat source is confined for its lower utilizing efficiency. Liquefied natural gas (LNG) at 110 K hasplenty of physical cold exergy besides..

It is important for the sustainable development of economy to exploit new energy. The utilization of lowgrade
heat source is confined for its lower utilizing efficiency. Liquefied natural gas (LNG) at 110 K has
plenty of physical cold exergy besides its high quality chemical energy. A power cycle with natural gas
directly expanding based on the cold energy of LNG and a low-grade heat source has been established in
this paper. Some parameters of the cycle have been investigated. The results indicate that the temperature
of low-grade heat source, the condensing temperature of second medium, and the inlet pressure of the
turbine are the key factors affecting the thermal and exergy efficiencies of the power cycle. The thermal and
exergy efficiencies will be improved with the increasing of the temperature of the low-grade heat source, the
decreasing of the condensing temperature and the increasing of the inlet pressure of the turbine. The
thermal efficiency and exergy efficiency of the power cycle will be above 30% and 40%, respectively, after
optimizing the key parameters. In order to further improve the utilizing efficiency of low-grade heat source,
a regenerative power cycle has been put forward and analyzed. The results show that under the same
conditions the thermal and exergy efficiency of the power cycle increase 3–5%.


来源:China LNG Web
责任编辑:hylng
您看到此篇文章时的感受是:
】【打印繁体】【投稿】 【收藏】 【推荐】 【举报】 【评论】 【关闭】【返回顶部
我来说两句
帐  号: 密码: (新用户注册)
验 证 码:
表 情:
内  容:

浙公网安备 33010802004834号