Induction Heating for Fluid Piping System

Home
Industrial Heating Solutions
Induction Heating for Fluid Piping System

Energy Efficiency Comparison

Heating method	Conditions	Power consumption
Induction heating	Heating 10 liters of water up to 50ºC	0.583kWh
Resistance heating	Heating 10 liters of water up to 50ºC	0.833kWh

Comparison between Induction Heating and Coal/Gas/Resistance Heating

Items	Induction heating	Coal-fired heating	Gas-fired heating	Resistance heating
Heating efficiency	98%	30-65%	80%	Below 80%
Pollutant emissions	No noise, no dust, no exhaust gas, no waste residue	Coal cinders, smoke, carbon dioxide, sulfur dioxide	Carbon dioxide, sulfur dioxide	Non
Fouling (pipe wall)	Non-fouling	Fouling	Fouling	Fouling
Water softener	Depending on the quality of fluid	Required	Required	Required
Heating stability	Constant	Power is decreased by 8％ yearly	Power is decreased by 8％ yearly	Power is decreased by more than 20％ yearly (high power consumption)
Safety	Electricity and water separation, no electricity leakage, no radiation	Risk of carbon monoxide poisoning	Risk of carbon monoxide poisoning and exposure	Risk of electricity leakage, electric shock or fire
Durability	With core design of heating, 30 years service life	5 years	5 to 8 years	Half to one year

Diagram

Induction Heating Power Calculation

Required parameters of parts to be heated: specific heat capacity, weight, starting temperature and end temperature, heating time;

Calculation formula: specific heat capacity J/(kg*ºC)×temperature differenceºC×weight KG ÷ time S = power W
For example, to heat thermal oil of 1 ton from 20ºC to 200ºC within an hour, the power calculation is as follows:
Specific heat capacity: 2100J/(kg*ºC)
Temperature difference: 200ºC-20ºC=180ºC
Weight: 1ton=1000kg
Time: 1 hour=3600 seconds
i.e. 2100 J/ (kg*ºC)×(200ºC -20 ºC)×1000kg ÷3600s=105000W=105kW

Conclusion
The theoretical power is 105kW, but the actual power is commonly increased by 20% because of taking the heat loss into consideration, that is, the actual power is 120kW. Two sets of 60kW induction heating system as a combination are required.