Design and performance evaluation of small-scale greenhouse powered by tracked solar system in Iraqi climate

In this article, it is proposed to provide a small greenhouse-powered solar system in all seasons in Baghdad, Iraq over the East-West orientation in (33.3 ° N, 44.4 ° E). The system proposed includes photovoltaic panels and single-pass counter-movement. On the roof of a greenhouse, the photovoltaic solar thermal system is monitored. A mathematical model is built for each hour, for each month, and at each latitude for the selected geometry greenhouses (through each wall and inclined surface and roofs), for the measurement of the totally transmitted solar radiation (beam, diffused, and reflected ground). In a temporary thermal model designed to measure the air temperature for an equivalent time in greenhouse hourly, computed distributed solar radiation is then applied. Demonstrate that the ventilation mechanism adjusts the temperature of the air within the greenhouse to the temperature needed by the plants. Has reached a temperature difference of around 12 degrees Celsius between the air entering it and the outside of it for day (10 Dec), and this difference is sufficient to warm the plants during the winter season and the moving solar panel technology on the greenhouse roof provides indirect sunlight polarization throughout the day.