Indirect Fired Heater Design

These water heating systems work with forced air systems and hydronic or radiant floor heating.

Indirect fired heater design.

Indirect fired water heaters are a modern system and are in current sales and use. They are also excellent for use in industrial space heating systems. Temperature control of an indirect fired heater is not as precise as a direct fired heater as it often under or overshoots the desired. The cooler air passes over and around the heat exchanger thus heating the air.

Exotherm corporation is a leader in the design and manufacturing of custom engineered process heaters for direct and indirect heating applications. Fired heater design manufacturing. Where an indirect fired water heater is installed the coil is inserted not in the heating boiler but rather in the bottom of a hot water tank. Tankless systems are typically electric oil or gas fired.

Heat is transferred from the convection section to the stack by breeching. The guidelines and procedures included herein are appropriate for a typical direct fired heater of the types found in refineries and gas plants and is not expected to include specialty heaters or furnaces that include reaction in the tubes due to heat or catalysts. You can see this design in our photo the blue tank is the indirect fired water heater and also in our sketch at page. Examples are steam boilers vaporizers heat exchangers and melting pots.

Due to it s design direct fired heaters are easy to transport and easy to maintain. These burners feature an industry proven eclipse burner. 5 mm btu hr heat recovery from gas turbine exhaust. Indirect systems can be fired by gas oil propane electric solar energy or a combination of any of these.

Visit tankless coil and indirect water heater basics for more on how they work. Indirect fired heaters also have lower turndown ratios than direct fired heaters resulting in less ability to vary the heat output unless additional heat exchangers are added to improve turndown. In addition to our first class fabrication exotherm is known for offering a safe and robust control system. Indirect fired heaters are just like your home oil or gas burning furnace with a chimney.

Guidelines for vertical cylindrical fired heater design. Direct fired heaters are efficient has a lower fuel consumption rate and lower operating costs as compared to indirect fired heaters. With propane or natural gas heating units the flame is contained in a burn chamber which heats a heat exchanger. Heater construction on a platform in the gulf mexico.