The investigation of solar energy support in a combined energy system

Sun is the most important energy source of our world. Almost all of the lives on the earth can not be alive without sun. In this study, via collectors, directly using the solar energy and, using the energy of the ground which is more stable than the air during all year, via ground source heat pump is aimed. Heat pump systems are being seen as a new and an alternative energy source in the rising enegy consumption trend of the world. Main principle of the heat pump is rejecting the heat from low temperature atmosphere to higher temperature atmosphere. Ground source heat pumps also working with this principle, in heating season using ground a place to reject the heat, in cooling season using ground a place to deliver the heat. In this study, first, heat loss and heat gains of the buiding to be conditioned have been calculated. In the first case, heating and partially cooling of the building have been supplied, for the second case, with establishing a solar assisted heat pump, domestic hot water need of the building have been supplied by two solar collectors and heating of the building have been supplied by the ground source heat pump. As a third option, with establishing a combined system -like the second option- with twenty five solar collectors, supporting the heat pump have been chosen. Between these three options, support ratio of solar power to domestic hot water need and space heating need have been considered, the effect of solar power to the ground heat exchanger?s length have been indicated and the investment costs of the options have been calculated. Keywords: Ground source heat pump, solar assisted ground source heat pump, solar power.