Progress and application of entransy theory in energy saving of chemical processes

doi:10.11949/j.issn.0438-1157.20161276

Abstract

Abstract:

The entransy principle and dissipation extremum have opened a new direction for energy saving in chemical process systems. Recent development of entransy theory was briefly discussed on definition, physical meaning and finding as a process parameter. Application of entransy theory in energy saving of chemical processes was summarized from several aspects, such as heat exchanger design, irreversibility of thermodynamics process and heat exchanger network synthesis. Scientific characteristics of entransy theory were explored through comparison of entropy generation rate and entransy dissipation rate as well as combination of entransy dissipation extremum principle to heat exchanger network synthesis.

Key words: entransy, extremum principle of entransy dissipation, process systems, thermodynamics process, entropy, heat exchanger network synthesis

摘要：

(火积)和(火积)耗散极值原理的提出，为化工过程系统节能开辟了新的方向。阐述了(火积)的物理意义、(火积)是过程量等(火积)理论的最新研究成果，从(火积)在换热器设计、热力学过程中的不可逆性、换热网络综合等方面的应用情况综述了(火积)理论在化工过程系统节能中的最新应用进展。重点围绕(火积)耗散率与熵产率的异同点比较分析、(火积)耗散极值原理与换热网络综合结合等方面，阐述了(火积)理论的科学性。

关键词: (火积)理论, (火积)耗散极值原理, 过程系统, 热力学过程, 熵, 换热网络综合

CLC Number:

TQ021.2

XIA Li, FENG Yuanli, XIANG Shuguang. Progress and application of entransy theory in energy saving of chemical processes[J]. CIESC Journal, 2016, 67(12): 4915-4921.

夏力, 冯园丽, 项曙光. (火积)理论及其在化工过程节能中的应用进展[J]. 化工学报, 2016, 67(12): 4915-4921.

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