I am trying to figure out how much ice i need to produce during daytime to cool a bedroom at nighttime. Currently a 9000 BTU Air conditioner with a separate indoor and outdoor unit is more than sufficient. The air conditioning is set to 24 degrees Celsius and the outdoor temperature goes from 32 to 28 degrees Celsius during the night. The conditions where i live (Thailand) has very high humidity. Between 70-90% is very common. At daytime i am outside not needing air conditioning, starting from around 19:00 when the house gets closed up the thermal storage from the walls, floors etc start to heat up the rooms because there is much less airflow. A simple fan relieves a little but not enough to live comfortably. Sweating does not help much because of the high humidity. After about 16:00 the wind practically stops blowing and closing up also prevents insects from entering. I found a machine that makes about 100 Kg of ice with about 20 kWh of electrical energy. My question is how much ice do i need to have the equivalent cooling power of a 9000 BTU air conditioner for about 8 hours. The room to be cooled is not leaking air, is isolated with about R15 and is about 32m3 (4x4x2) of which only the bottom half would need to be cooled efficiently as the higher air is not being felt when sleeping.