Fill the heat storage chamber with something similar to radiators.
First, heat the radiators, then use a bellows to blow air into the heat storage chamber. After the air passes through the radiators and is heated, its temperature can increase by several hundred degrees before entering the furnace, further raising the furnace temperature, making it possible to melt the iron.
So how do you heat the radiators?
Ma Lin's idea is to use an external heat source.
For example, connect a furnace below the heat storage chamber, fill the furnace with a lot of charcoal powder, and use the bellows to blow air in.
In this situation, wouldn't a tall blue flame rise from the furnace each time you pump the bellows?
Use this flame to heat the radiators.
There is a valve between the heat storage chamber and the furnace below that can be opened and closed.
