%0 Journal Article %T Application of “Sink & Source” and “Stream wise” Methods for Exergy Analysis of Two MED Desalination Systems %J Journal of Chemical and Petroleum Engineering %I University of Tehran %Z 2423-673X %A Ahamdi Danesh-Ashtiani, Hossein %A Abdollah-Zargar, Hamid %D 2017 %\ 02/01/2017 %V 50 %N 2 %P 61-72 %! Application of “Sink & Source” and “Stream wise” Methods for Exergy Analysis of Two MED Desalination Systems %K Exergy analysis method %K Solar energy %K MED desalination system %K Stream wise %K Sink & source %R 10.22059/jchpe.2017.60506 %X Utilization of fossil fuel for supplying of requires energy of desalination systems is common. On the other hand, solar energy is one of the high-grade energies in the world that can be found specifically in hot weather places. Therefore, utilization of solar energy for operation of desalination systems will reduce greenhouse gases and is a good alternative way. Common exergy analysis method (stream wise) uses input and output exergy of streams to calculate the efficiency and exergy loss. Another exergy analysis method, named “Sink & Source”, is illustrated in the present study. The Stream wise method usually computes efficiency of systems as higher than a reliable value. For example, the computed exergy efficiency of presented high capacity MED desalination system is 88.63%, while this value is estimated about 1.04% from the new method. The uselessness of the traditional method for analyzing presented low-capacity MED desalination system is also shown. For example, the computed exergy efficiency of a low-capacity desalination system was 97.51%, while a value of 42.57% was obtained from the new method. A solar field and a solar heating system are suggested for presented high capacity and low capacity MED, respectively. Furthermore, an economic analysis of afore said desalination system is presented. %U https://jchpe.ut.ac.ir/article_60506_e4a8e57ca516bc1315cf56fd46dd5eee.pdf