Pressure exchangers in pinch technology

被引：9

作者：

Homsak, M ^{[1
]}

Glavic, P ^{[1
]}

机构：

[1] UNIV MARIBOR, DEPT CHEM ENGN, MARIBOR 62000, SLOVENIA

来源：

COMPUTERS & CHEMICAL ENGINEERING | 1996年 / 20卷 / 6-7期

关键词：

D O I：

10.1016/0098-1354(95)00204-9

中图分类号：

TP39 [计算机的应用];

学科分类号：

081203 ; 0835 ;

摘要：

The role of pressure is not taken into account when using composite curves on a temperature/enthalpy flow rate (T/I) diagram to predict minimum utility requirement in a chemical process. Usually, pressure effects are neglected by assuming small pressure drops through the process. However, sometimes, the energy analysis should be applied to a part of the process involving large pressure changes, e.g. an expander coupled directly to a compressor. In such a case, enthalpy changes indicate neither the quality nor the energy flow direction between the streams exchanging energy. The problem of high pressure exchangers in pinch technology is now solved by a combination of exergy analysis in a temperature vs power availability (T/P-x) diagram in addition to the usual approach in the pinch technology.

引用

页码：711 / 715

页数：5