Economic comparison of constructing solar and flare gas power plants in funding for energy expenses of reverse osmosis process
Volume Title: 1
1Ali Vatani ; 2Mostafa Jafari; 3Mohammad Shahab Deljoo; 4Amir Hossein Khalili Garakani; 4Mahya Nezhadfard
1School of Chemical Engineering, Institute of LNG, College of Engineering, University of Tehran, Tehran, Iran
2School of Chemical Engineering, College of Engineering, University of Tehran, Tehran, Iran
3School of Chemical Engineering, College of Engineerig, University of Tehran, Tehran, Iran
4Chemistry and Process Engineering Department, Niroo Research Institute, Tehran, Iran
Many small villages in Asaluyeh are facing severe water shortage and the amount of fresh water supplied to these villages is much lower than consumer demand. Given the great capacity of renewable and non-renewable energies in the southern cities of the country, it is necessary to make substantial efforts for supplying the required fresh water in this area. In the current study, first an industrial water desalination plant with a capacity of 1000 m3/day of fresh water is simulated using the Reverse Osmosis method. In order to supply the required electricity for the reverse osmosis process and selling surplus electricity, 1 MW solar and flare gas power plants are then designed and simulated alongside the reverse osmosis process and compared in terms of economic parameeters. The results of the economic evaluation in e thRETscreen software indicated that if dollar at the government-issued rate is used to fund for the initial expenses of the solar and flare gas power plants, it is economically profitable to consume and sell the generated power in both solar and gas power plants. Moreover, if the flare gas power plant with flare gas feed is used, the payback time for the constructed power plant is 2.3 years, while it is 6.8 years for solar power plant.