Direct Fired Heater Efficiency

Although the example illustrates the energy savings of direct gas fired vs.

Direct fired heater efficiency.

Below is a diagram of a direct fired air heater. Indirect gas fired ahus direct gas fired ahus are attractive when compared with most other heating sources. Having a thorough understanding of all of the differences between these two heater types will ensure you choose the optimal solution for each project. 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. For example a steam heating coil is supplied by a boiler has a maximum efficiency of 80 percent and experiences distribution piping energy losses. There is a wide variety of heating configurations. Direct fired heaters may also heat fluid using radiant and convection heating.

Having a thorough understanding of all of the differences between these two heater types will ensure you choose the optimal solution for each project. Based on method outlined in api 560 annex g procedure intended for fired heaters burning liquid or gaseous fuels. 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. 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.

Direct fired heaters can utilize radiant and or convection heat transfer sections and can be configured in many different ways depending. 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. Choice depends on fuel cost thermal efficiency temperature desired size of the heat load. Outside air enters the unit at point c and is either filtered or not.

Direct fired heaters are both more efficient and less expensive than indirect fired heaters. However there are some cases where an indirect fired heater is the better choice. Direct fired gas heating is one of the simplest and most cost effective methods for heating air.