The combined heating, cooling, power (CCHP) and freshwater system are designed separately with two types of desalination plants including multi-effect desalination with thermal vapor compression (MED-TVC) and reverse osmosis (RO). This combined system meets the heating, cooling, power and fresh water needs of a hotel in Iran. Gas turbines and diesel engines are considered as prime movers (PM) for conversion of fuel to power and heat. The integration of the CCHP system with RO desalination was investigated in two modes of RO without colloidal fouling (first day of operation) and with colloidal fouling formation rate in a period of 90 days. The genetic algorithm (GA) was implemented to find the optimal values of 21 design parameters in the case of CCHP system with RO desalination and 22 design parameters in the case of CCHP system with MED-TVC desalination to minimize the annual cost. Optimization results showed that the diesel engine prime mover has a greater advantage over the gas turbine in the all studied modes. In addition, combination of CCHP + RO without colloidal fouling and with colloidal fouling and combination of CCHP + MED-TVC with diesel engine as PM showed 9.66%, 1.80% and 11.68% reduction in annual cost compared with gas turbine as PM, respectively.

加热、冷却、电力 (CCHP) 和淡水联合系统分别设计有两种类型的海水淡化厂，包括热蒸汽压缩多效海水淡化 (MED-TVC) 和反渗透 (RO)。该组合系统可满足伊朗一家酒店的供暖、制冷、电力和淡水需求。燃气轮机和柴油发动机被认为是将燃料转化为动力和热量的原动机 (PM)。CCHP 系统与 RO 脱盐的集成在两种模式下进行了研究，RO 没有胶体污垢（运行的第一天）和 90 天的胶体污垢形成率。实施遗传算法（GA）以找到具有 RO 脱盐的 CCHP 系统的 21 个设计参数和具有 MED-TVC 脱盐的 CCHP 系统的 22 个设计参数的最佳值，以最小化年成本。优化结果表明，柴油机原动机在所有研究模式下都比燃气轮机具有更大的优势。此外，CCHP+RO无胶体污染和有胶体污染的组合以及CCHP+MED-TVC与柴油机作为PM的组合与燃气轮机作为PM相比分别降低了9.66%、1.80%和11.68%的年成本。