modeling and economic and environmental improvement of the simultaneous production of electricity and heat from photovoltaic panels

Electricity generation with the help of nanophotovoltaic system is one of the most important uses of solar energy. combining the nanophotovoltaic system with the building is one of the plans that engineers and architects are interested in. economic calculations showed that by using the integration of integrated systems and installation on the roof, it is possible to have a return on investment in a period of 3.5 years. nowadays, the use of nanophotovoltaic systems is very common in developed countries. for example, a home nanophotovoltaic system in the cities of isfahan, alborz, yazd, lorestan, etc., with a power capacity of 2 kilowatts, produces 3600 kilowatt hours of energy per year. this amount of energy production saves 3.4 tons of coal fuel (used to generate electricity) and prevents 5000 pounds of carbon monoxide from entering the atmosphere. by using the local nanophotovoltaic method, it is possible to provide energy on site and lead to a reduction in the costs of building centralized power plants with their extremely high costs, and there will be no need to develop and build a new network or strengthen the capacity of existing networks. at the same time, it will lead to a sharp reduction in losses caused by transmission and distribution, and also the surplus production will be able to be injected into the network and cover the network s needs.