In this post I want to share with you how to size indirect fired water bath heater.
Indirect Fired Water Bath Heaters (IFWBH) safely heat various mediums by transferring energy indirectly. In this system, the process coils are submerged in a heated bath solution—typically a water-glycol mixture—which absorbs heat from the firetube and transfers it to the process media.
How Indirect Fired Water Bath Heater Works
Fuel gas burns inside a firebox submerged in the lower section of the water bath, transferring heat through the firebox wall to maintain the bath at the desired temperature. The process fluid (such as well fluids, natural gas, or oil) flows through a coil immersed in the upper section of the bath, where it is heated indirectly through the tube walls. A temperature controller regulates the fuel gas supply to the firebox to keep the water bath at an optimum operating temperature of 190°F. Operating above this threshold is inefficient, as it leads to excessive water loss through evaporation.
