The effect of nocturnal shutter on insulated greenhouse using a solar air heater with latent storage energy

The experimentally obtained results show that: the nocturnal variations of temperature inside the two greenhouses exceed 2 °C between the first (with shutter) and the second one (without). Also, the nocturnal temperature inside the greenhouse equipped with solar heating system was maintained to 15 °C while the outside temperature decreases to 8 °C.