Calculating heat generated by a resistance wire

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    Heat Resistance Wire
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SUMMARY

This discussion focuses on calculating the heat output of a resistance wire used in an infrared heating panel. The user aims to design a 16"x16" heating element using nickel-chromium wire to heat an epoxy to 350°F from a distance of 5 inches. Key factors influencing heat transfer include the efficiency of heat transfer from the coil to the object, the medium (air), and the design of the coil, which may need to reach temperatures of 600°F to compensate for heat losses.

PREREQUISITES
  • Understanding of resistive heating principles
  • Knowledge of heat transfer mechanisms
  • Familiarity with materials like nickel-chromium wire
  • Basic thermodynamics concepts
NEXT STEPS
  • Research calculations for heat transfer efficiency in air
  • Learn about the properties of nickel-chromium wire for heating applications
  • Explore design techniques for infrared heating panels
  • Investigate thermal insulation methods to minimize heat loss
USEFUL FOR

Engineers, DIY enthusiasts, and anyone involved in designing heating elements or thermal systems, particularly those interested in resistive heating and infrared technology.

privitmj
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How can I calculate how much heat a resistance wire gives off when I energize it? For example, I have calculated the wattage per square inch of a heating element I plan on building. How do I know how much actual heat it will give off?

Thanks.
 
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Think about it. Law of conservation of energy.
 
Or I should say how do I design an electric coil that when energize will heat an object 5" away up to 350F?
 
That's an entirely different question.

It depends. How efficiently the heat is transferred from the coil to the object? What medium separates them? Where else can the heat energy go? What is the nature of the object? etc...
 
The medium is air. I am basically trying to design my own infrared heating panel to heat an epoxy to 350F. I am not concerned about losses as I plan on over compensating with temperature i.e. designing a coil that will go to 600F or so. Basically i need to figure out how to calculate how much heat a coil has the ability to "give off". To go into more detail, I want to design a 16"x16" heating panel that has the ability to heat epoxy about 5" away to 350F. I plan on using a resistive heating wire and making my own coil. This should save me about $600 :OP

*I plan on using a nickel-chromium wire of lengh and resistance to be determined.
 

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