Determination of heating requirements of greenhouses with different structure for different regions of Turkey

Greenhouse is a structure covered with materials such as glass, plastic, fiberglass in which environmental conditions can be controlled in order to provide suitable conditions for the cultivation of various plants. In this study, the heating loads of the greenhouse located in provinces at different degree day region of Turkey were determined by taking into consideration the parameters such as the greenhouse cover material, the product and the heating method for the greenhouses. In the calculations, 25 years meteorological data (temperature, humidity, solar radiation, wind speed) of the provinces were used and spring-roofed, cradle-roofed and elevated tunnel greenhouse were selected as greenhouse type. Calculations were made separately for glass (C) and polyethylene (PE) as the greenhouse covering material, for hot air heating system (SH) and hot water heating system (SS) as heating system, for tomatoes, beans and cucumbers as the product. With this study, it was investigated which type of greenhouse is suitable for the regions in terms of heating load using different parameters. It was shown that greenhouse structure, heating system and greenhouse material has a significant effect on the greenhouse heating loads.