Phone Number
800.460.5200
International
713.460.5200
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In order to calculate the heat required to complete a process heating application, one
must solve two (2) separate calculations utilizing much of the same data. The heat required
for an application must be sufficient to satisfy both Calculation #1 and Calculation #2 below.
Please note that if the material heated is a gas, liquid, or solid, both calculations below
are required.Calculation #1
The heating capacity required for the initial heating to bring the application up to the operating
temperature in the desired time which includes the heat absorbed by all materials, the heat required
for fusion or vaporization if applicable, and the heat required to replace average heat losses.
A) Heat absorbed by all materials
B) Heat required for fusion or vaporization
C) Heat required to replace average heat losses
Total Power Requirement for Initial Heat-Up Calculation #2
The heat capacity required to maintain the operating temperature includes the heat absorbed by all
materials added to the process, the heat required for fusion or vaporization during the process,
and the heat required to replace average heat losses.
A) Heat absorbed by all materials =
B) Heat required for fusion or vaporization
C) Heat required to replace average heat losses =
Total Power Requirement for Operating Heat =
The actual heat requirements are the higher calculated result of Calculation #1 or Calculation #2
These are the fundamental calculations needed to determine an applicable kW rating for your
requirements allowing for an allotted 20% safety factor. You can use the kW result to select
an appropriate heater on the left hand Product website navigation or by contacting your
Gaumer sales engineer for assistance.
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