Direct Fired Heater Efficiency

Based on method outlined in api 560 annex g procedure intended for fired heaters burning liquid or gaseous fuels.

Direct fired heater efficiency.

Indirect gas fired ahus direct gas fired ahus are attractive when compared with most other heating sources. Tulsa heaters midstream 3 measuringfired heaterefficiency this guide will teach you the process of measuring and calculating your heater s efficiency so you can optimize your plant and save money. There is a wide variety of heating configurations. Having a thorough understanding of all of the differences between these two heater types will ensure you choose the optimal solution for each project.

For example a steam heating coil is supplied by a boiler has a maximum efficiency of 80 percent and experiences distribution piping energy losses. Choice depends on fuel cost thermal efficiency temperature desired size of the heat load. Direct fired heaters are both more efficient and less expensive than indirect fired heaters. Outside air enters the unit at point c and is either filtered or not.

However there are some cases where an indirect fired heater is the better choice. Having a thorough understanding of all of the differences between these two heater types will ensure you choose the optimal solution for each project. A direct fired heater is a style of heater in which a burner provides hot gasses that transfer their heat energy to a process liquid or gas flowing directly through coils installed inside the heater vessel. Direct fired heaters may also heat fluid using radiant and convection heating.

Although the example illustrates the energy savings of direct gas fired vs. If desired a quantity of returning room air can be added b to this outside air in a balanced fashion to assure a constant total airflow. Because the temperature in both sections is very high an intermediate heat transfer fluid is typically used. Direct fired heaters are both more efficient and less expensive than indirect fired heaters.

Direct fired air heaters are typically less expensive and more efficient than indirect fired units as direct firing units converts nearly 100 of the combustion gases used to hot air. However there are some cases where an indirect fired heater is the better choice. Efficiency direct fired heaters convert 100 of the fuel being used to direct heat which lowers fuel consumption and operating costs easy to transport direct fired heaters are fairly simple pieces of equipment that can be moved to where heat is needed.