High Pressure Coal Boiler (GregTech 4)
WEBThe High Pressure Coal Boiler is therefore the most fuel efficient Coalburning GregTech generator. The boiler can hold 32,000 Liters of steam and 16,000 Liters of water. As long as its temperature is above 100, every 10 ticks it will consume 1 Liter of water and produce 150 Liters of steam, equivalent to 15 mB/t of steam.