Economical and Environmental Costs Analysing of Replacing Gas and Electric Water Heaters with the Solar Water Heaters
Subject Areas : environmental managementHossein Yousefi 1 , Younes Noorollahi 2 , Somayeh Toghyani 3
1 - - Faculty of New Sciences and Technologies, University of Tehran*(Corresponding Auther).
2 - - Faculty of New Sciences and Technologies, University of Tehran
3 - Assistant Professor, Department of Renewable Energies and Environment, Faculty of New Sciences and Technologies, University of Tehran
Keywords: energy crisis, Renewable energy, solar water heaters, reducing CO2 emissions,
Abstract :
Bachground and Objective: Following the oil crisis in the seventies and the rising cost of fossil fuels, the use of renewable energies flourished. Applying of new and renewable energies, especially solar energy, the divine eternal source due to its easy availability and, in recent years more attention has been scientists and students of the energy. A variety of methods exist for the use of clean energy and eternal God, but heating water using solar water heaters, as perhaps is the easiest and most economical method. Method: In this study, environmental and economic feasibility of using solar water heater systems in residential buildings, 6 units (households with 4 or 5 persons) using real data in the environment of Retscreen software has been studied. Findings and Conclusion: Results of this research show that the replacement of gas water heaters with the solar water heaters, the annual savings in natural gas consumption to supply hot water for the entire households is consuming 5,820 cubic meters. And the rate of annual economic savings equals 6402000 rials will be replace the electric water heaters the solar water heaters, electrical energy savings of 22,995 kWh annually and annual economic savings of 120,244,000 Iranian Rials.
