TY - JOUR T1 - Total site cogeneration and desalination system integration assessment using R-curve TT - ارزیابی یکپارچه‌سازی سیستم آب‌شیرین‌سازی چندمرحله‌ای با سیستم تولید همزمان توان و حرارت با به کارگیری منحنی نسبت JF - mdrsjrns JO - mdrsjrns VL - 17 IS - 4 UR - http://mme.modares.ac.ir/article-15-9142-en.html Y1 - 2017 SP - 225 EP - 236 KW - Integration KW - R-curve KW - Total Site KW - Desalination KW - Total Annual Cost N2 - In this study, the integration of multi-effect desalination (MED) system with cogeneration of heat and power system has been considered. Low-pressure steam in two case studies has been utilized as the motive steam of MED system. R-curve is a powerful tool that can be used to identify fuel utilization amount in different operation points of the cogeneration system. R-curve explains utility system operation improvement procedure without capital cost. By deploying and development of the R-curve concept, the freshwater demand of the total site and total annual cost of the site have been evaluated. These curves can be used as a tool to improve the operation and economic parameters in every operating point of cogeneration system and present comprehensive view about the improvement of utility system operation condition at each operating point. For the first time, R-curve has been used to identify the impact of cogeneration system integration with a thermal desalination system on the cogeneration system operating point. The performance of the cogeneration system can be either enhanced or impaired by integration of desalination system. As demonstrated in a case study, integration of 2.2 MW MED system can either provide 52.765 MW energy saving or deprive 30.257 MW fuel energy based on the operating state of the cogeneration system before and after integration. M3 ER -