How Do You Calculate Frequency and Power for an Induction Heater?

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SUMMARY

This discussion focuses on calculating the power and frequency requirements for an induction heater designed to heat graphite rods to 1200°C with a heat flux of 1 MW/m². Two rod dimensions are specified: 5 mm diameter and 100 mm length, and 50 mm diameter and 100 mm length. Key parameters include the specific heat capacity of graphite (approximately 0.7 J/g/K) and its specific gravity (approximately 2 g/cm³). Users are directed to utilize an induction heating calculation tool provided by Ultraflex Power for precise calculations.

PREREQUISITES
  • Understanding of induction heating principles
  • Knowledge of specific heat capacity and specific gravity
  • Familiarity with thermal dynamics and heat transfer concepts
  • Experience with using online calculators for engineering applications
NEXT STEPS
  • Explore the Ultraflex Power induction heating calculation tool
  • Research the thermal properties of graphite in detail
  • Study the design and optimization of induction heating coils
  • Learn about the impact of ambient losses on heating efficiency
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Engineers, researchers, and hobbyists involved in induction heating applications, particularly those working with graphite materials and high-temperature processes.

Jhon Paul
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I would like to get a clue of how to arrive at the power and frequency for an Induction heater. I am planning to heat a graphite rod upto 1200 degC and also to provide a heat flux of 1 MW/m2. The graphite rod dimension will be for one case Dia 5 and length 100 mm and in the second case will be Dia 50 and length 100 mm.

My queery is how to arrive at the frequency and power of the Induction power system. Any help will be appreciated.
 
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Jhon Paul said:
I would like to get a clue of how to arrive at the power and frequency for an Induction heater. I am planning to heat a graphite rod upto 1200 degC and also to provide a heat flux of 1 MW/m2. The graphite rod dimension will be for one case Dia 5 and length 100 mm and in the second case will be Dia 50 and length 100 mm.

My queery is how to arrive at the frequency and power of the Induction power system. Any help will be appreciated.
What have you found so far in your reading on this subject? Can you post links to some of your reading, and ask specific questions about that reading? :smile:
 
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Likes Babadag and NascentOxygen
Most likely this can only be answered by an "old timer". I am making measurements on an uA709 op amp (metal can). I would like to calculate the frequency rolloff curves (I can measure them). I assume the compensation is via the miller effect. To do the calculations I would need to know the gain of the transistors and the effective resistance seen at the compensation terminals, not including the values I put there. Anyone know those values?

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