Assessment of Greenhouse Heating/Cooling via Heat Pump for Herat-Afghanistan

Abstract

Energy is an essential requirement for living, and the renewable energy sources are increasingly popular sustainable energy sources. The solar energy is an inexhaustible, clean, and sustainable energy source in the world. In this work, heating of a greenhouse in Herat (Afghanistan) with a heat pump is investigated using the solar energy. The greenhouse is kept at 20 ?, and the electricity required to operate the heat pump is taken from the grid. As a result of the analysis, the exergy/electricity input reaches 25.59 kWh, while the minimum value is equal to 0.01 kWh. It will be determined that the product exergy undergoes the maximum product exergy of 6.38 kWh. Finally, it will be determined that a ground source heat pump with a higher COP can be used instead of an air source heat pump.