|Home | Products | Accessories | Ordering | Contact Us | Search|
Salamander Ceramic Infrared Emitters Technical Manual Page 15
Estimating Power RequirementsIn a given heating system any or all of the three modes of heat transfer (convection, conduction, radiation) can be utilized. The intended purpose of the following examples is to focus on the infrared heating component only of each heating system. That is, it is assumed that 100% of the heat transfer in each example is by infrared radiation and any heat losses are considered to be negligible.
Given: A thermoforming application requires that an 1/8" thick PVC sheet be
heated to 350 °F (177 °C) in 1 minute. Determine the power required using only
|Emissivity of the infrared source||= .90|
|Emissivity of PVC Sheet||= .90|
|Specific Heat of PVC||= .30 BTU / lb. / °F|
|Density of PVC||= 99 lbs. / ft3|
|Temperature Required||= 350 °F (177 °C)|
|Ambient Temperature||= 65 °F (18 °C)|
Convert the PVC target into (lbs. / in2):
lbs./in2 = (99 lbs./ft3)( 1/1728 in3)(.125 in) = .007161 lbs./in2
The power required to heat the PVC sheet is given by:
Watt-Hour (Weight)(Specific Heat)( T1 - T2 )
____________ = ____________________________________________
= _____________________________ = .179
Technical Manual Table of Contents
Technical Manual in Acrobat .pdf format
We are a distributor of infrared heaters. Always consult manufacturers installation instructions for proper installation of the products or systems shown on this website. © Copyright 1999-2019 Mor Electric Heating Assoc., Inc.
ELECTRIC HEATING ASSOC., INC.