The 2 bar pressure steam move on the coils. The coils heat the air inside. Air fans on the oven circulate air inside as sucking, then the heated air passes through the air channels. Thus heating air loop happens in the oven. Here it is important to keep the temperature constant inside the oven according to need. Some chemicals that can freeze at ambient temperature are melted at constant temperature in order to get good process. 12 units of 1000 kg ibc tanks can be stocked inside to chemical melting chamber. Oven doors are made of heat-insulated sandwich panel and moves on the rail.