At 9:50 am, the fan–pad system was turned on to cool the greenhouse and the roof vents were closed. Initially, the air temperature in the greenhouse decreased significantly due to the evaporative cooling pad-fan system. Then, the inside air temperature increased slightly while Tamb increased. At midday (from 12:30 to 13:40), the greenhouse switched to the working mode, where both evaporative cooling and external shading (EC + ES) were used concurrently. The effect of the external shadings was immediate, as the indoor temperature decreased to 2–3 C lower than the ambient temperature. Subsequently, when Tamb decreased to approximately 31 C, the external shading was removed to allow the incoming solar radiation to penetrate into the greenhouse. From 16:15 to 18:00, there was almost no difference in temperature between the indoor and the ambient environment due to the low solar radiation of approaching dusk.