Society of Automotive Engineers 2006 World Congress
Open tanks and exterior surfaces of process heating equipment lose heat to the surroundings via convection, radiation, and/or evaporation. A practical way of reducing heat loss is by insulating or covering the surfaces. This paper presents methods to quantify heat loss and energy savings from insulating hot surfaces and open tanks. The methods include radiation and evaporation losses, which are ignored by simplified methods. In addition, thermal mass, such as refractory, conveyor and racking equipment, acts as a heat sink and increases heating energy use in process heating applications. This paper presents lumped capacitance and finite-difference methods for estimating heat loss to thermal mass, and savings from reducing this loss.
The methods described above have been incorporated in free software, and are demonstrated using case study examples. The examples demonstrate the magnitude of the potential error from using simplified methods.
Copyright © 2006, SAE International
Place of Publication
Carpenter, Kevin and Kissock, J. Kelly, "Energy Efficient Process Heating: Insulation and Thermal Mass" (2006). Mechanical and Aerospace Engineering Faculty Publications. 159.