期刊文献+

A novel method based on entransy theory for setting energy targets of heat exchanger network 被引量:5

A novel method based on entransy theory for setting energy targets of heat exchanger network
下载PDF
导出
摘要 A T-Q diagram based on entransy theory is applied to graphically and quantitatively describe the irreversibility of the heat transfer processes.The hot and cold composite curves can be obtained in the T-Q diagram.The entransy recovery and entransy dissipation that are affected by temperature differences can be obtained through the shaded area under the composite curves.The method for setting the energy target of the HENs in T-Q diagram based on entransy theory is proposed.A case study of the diesel oil hydrogenation unit is used to illustrate the application of the method.The results show that three different heat transfer temperature differences is 10 K,15 K and 20 K,and the entransy recovery is 5.498×10~7k W·K,5.377×10~7k W·K,5.257×10~7k W·K,respectively.And the entransy transfer efficiency is 92.29%,91.63%,90.99%.Thus,the energy-saving potential of the HENs is obtained by setting the energy target based on the entransy transfer efficiency. A T-Qdiagram based on entransy theory is applied to graphically and quantitatively describe the irreversibility of the heat transfer processes. The hot and cold composite curves can be obtained in the T-Qdiagram. The entransy recovery and entransy dissipation that are affected by temperature differences can be obtained through the shaded area under the composite curves. The method for setting the energy target of the HENs in T-Q diagram based on entransy theory is proposed, A case study of the diesel oil hydrogenation unit is used to illustrate the application of the method, The results show that three different heat transfer temperature differences is 10 K, 15 K and 20 K, and the entransy recovery is 5.498 × 10^7 kW. K, 5.377 × 10^7 kW. K, 5.257 × 10^7 kW. K, respectively. And the entransy transfer efficiency is 92.29%, 91.63%, 90.99%. Thus, the energy-saving potential of the HENs is obtained by setting the energy target based on the entransy transfer efficiency.
出处 《Chinese Journal of Chemical Engineering》 SCIE EI CAS CSCD 2017年第8期1037-1042,共6页 中国化学工程学报(英文版)
基金 Supported by the National Natural Science Foundation of China(21406124)
关键词 Heat transfer Process systems Entransy Energy target T-Qdiagram 耗散理论 网络能源 recovery 换热 复合曲线 不可逆性 传热过程 定量描述
  • 相关文献

参考文献15

二级参考文献117

共引文献216

同被引文献19

引证文献5

二级引证文献1

相关作者

内容加载中请稍等...

相关机构

内容加载中请稍等...

相关主题

内容加载中请稍等...

浏览历史

内容加载中请稍等...
;
使用帮助 返回顶部