Graphical Analysis of the Integration of Heat Pumps in Chemical Process Systems
Graphical Analysis of the Integration of Heat Pumps in Chemical Process Systems
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DOI：
10.1021/ie400607g
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发表时间：
2013-06
影响因子：
4.2
通讯作者：
Minbo Yang;Xiao Feng;K. Chu
中科院分区：
文献类型：
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作者：
Minbo Yang;Xiao Feng;K. Chu
在化学过程系统中正确设置热泵可以增强系统的能量利用率，减少热和冷公用事业的消耗，并实现公用事业节省和经济利益。在本文中，对于将单个热泵引入系统的情况，使用图形分析方法分析了在不同情况下大复合曲线和捏温度的动态变化。确定了这种变化的原因和条件。结果表明，对于表现出捏温度变化的情况，可以通过使用两个热泵来获得更冷热的效用。介绍了符合跨钉规则的现有和新的两泵安排。
Setting heat pumps correctly in a chemical process system can enhance the energy utilization ratio of the system, reduce the consumption of both the hot and cold utilities, and achieve utility savings and economic benefits. In this paper, for the case of introducing a single heat pump into a system, the dynamic changes of the grand composite curve and pinch temperature under different scenarios are analyzed using a graphical analysis method. The reasons and conditions for such changes are determined. It is shown that for cases that exhibit a change in pinch temperature more hot and cold utility savings may be obtained by using two heat pumps. Existing as well as new two-heat-pump arrangements that comply with the cross-pinch rule are presented.