Fired Heater Learning Center

Insulation and Heat Loss Calculator

Insulation and Heat Loss Calculator
Thickness Of Layer, in: Insulation Material:
Hot Face Temperature, °F: Air Temperature, °F:
Air Velocity, ft/sec: Surface Type:

Cold Face Temperature, °F: Heat Loss, Btu/hr-ft2:
Thermal Cond, Btu-in/hr-ft2-F:
1) The surface type has no effect if air velocity is specified.


The formulas and correlations presented herein are all in the public domain and are to be used only as a learning tool. Note that any product, process, or technology in this document may be the subject of other intellectual property rights reserved by sponsors or contributors to this site. This publication is provided as is, without any warranty of any kind, either expressed or implied, including, but not limited to, the implied warranties of fitness for a particular purpose, or non-infringement.

The formulas, correlations, and methods presented herein should not be considered as being recommended by or used by the sponsors of this site. The purpose of this site is educational and the methods may or may not be suitable for actual design of equipment. Only a fired heater design engineer is qualified to decide if a calculation or procedure is correct for an application.