Work and heat are the two predominant forms of energy in the process industry. Considerable savings can be achieved by synergizing the work and heat requirements of process streams. A generalized framework for integrating heat and work simultaneously is proposed based on a mixed‐integer nonlinear programing model for work‐heat exchange network synthesis. Starting with a set of streams with known flows, temperatures, and pressures, a network of single‐shaft‐turbine‐compressors with motors/generators, valves, heat exchangers, and utility heaters/coolers is synthesized for minimized total annualized cost. In contrast to existing works, (1) streams are not preclassified as hot/cold or high/low pressure, (2) pressure changes are allowed for streams with no net pressure change, (3) liquid‐vapor phase changes are allowed, and (4) phase‐based property correlations are used. Successful application of our approach to C3 splitting yields a nonintuitive configuration. Another application of an offshore natural gas liquefaction process is also studied. © 2018 American Institute of Chemical Engineers AIChE J, 64: 2472–2485, 2018

中文翻译：

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工作热交换网络综合框架（WHENS）

功和热是过程工业中两种主要的能源形式。通过协同处理工艺流的工作和热量需求，可以实现可观的节省。提出了一种基于混合整数非线性规划模型的工热交换网络综合通用框架。从一组具有已知流量，温度和压力的流开始，合成了一个单轴涡轮压缩机网络，其中包括电动机/发电机，阀门，热交换器和公用加热器/冷却器，以使总年度成本降至最低。与现有工作相反，（1）不能将流预先分类为热/冷或高压/低压；（2）允许无净压变化的流的压力发生变化；（3）允许液相-汽相的变化，（4）使用基于阶段的属性关联。成功地将我们的方法应用于C3拆分会产生非直观的配置。还研究了海上天然气液化工艺的另一种应用。©2018美国化学工程师学会AIChE J，64：2472–2485，2018年