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| | This paper analyses the function of heat exchanger networks(HEN) is a process system, and states the essence of energy evolvement and diversification in the process system The paper indicates that the optimal objective function of all of the previous methods expressed by the sum of cold utility and hot utility for the energy cost is not rational Actually, from the exergy analysis point, it is the exergy dissipation that drives the process of heat transfer The energy cost and its objec... | | 分析了换热网络在过程系统中的功能 ,从火用分析和火用经济学的角度提出了换热网络最优合成设计的实用火用经济目标函数 ,它包含了网络的流动火用损费 ,且可分解为各个换热单元的总费用之和 .在换热网络目标函数可分解性的基础上 ,本文又进一步提出了换热网络分解协调优化的研究策略 ,它是在各个匹配单元 (子系统 )和整个换热网络结构 (复杂系统 )之间进行优化协调 ,并获得换热网络的最优结构和各匹配单元的最优操作参数 .最后 ,通过一换热网络的最优合成 ,说明了该方法的应用前景 | | 文摘来源 | | Reboiler of fractionating column is an important type of heat exchangers in the refinery industry, chemical industry, light industry and so on. The optimization and heat transfer enhancement of the reboiler is very significant for the optimal utilization of thermal energy. In this paper, the reboiler with low-temperature heat source was optimized applying exergoeconomics and heat transfer enhancement techniques. An exergoeconomic model (including objective function and constraint equations) was established.... | | 精馏塔再沸器是炼油、化工、轻工等行业中非常重要的换热设备,这种再沸器的优化和传热强化对热能的优化利用具有重要意义。本文运用经济学方法和传热强化技术,对以低温热为热源的再沸器进行优化设计,建立了同时考虑传热损、流动损和传热强化的再沸器经济优化目标函数和约束条件。并给出了应用实例。 | | 文摘来源 | |   |
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