Shenzhen Biyuanda Technology Co. Ltd.

• High heating efficiency, heat utilization over 98%
  Induction heating can turn the metal cylindrical part itself into the heat source, thereby enabling the heat to be directly absorbed while providing even heating without partial temperature difference. In addition, a layer of heat insulation material is wrapped around the metal cylindrical part to avoid the heat loss, thus guaranteeing high heat utilization of more than 98%.
• Intelligent control, easy to operate
  Intelligent control system, real-time temperature display and one-key start are significant features making operator to use. Besides, attended monitoring is not required, so that the labor cost is efficiently reduced. The system is certified in accordance with 3C Certificate and Special Furnace Body Qualification Certificate, the service life can reach 10 years and more.
• Safety and reliability
  No open flame, no electricity leakage;
• Modular installation
  The induction heating unit can be installed individually. Multiple units can be used in parallel.
• Energy efficiency 30%-60%
  Induction heating saves more than 30% energy in comparison with traditional resistance heating method.

Example: induction heating hot air generator for 15m3 drying kiln (to dry 4 tons pine wood of 20% moisture content)

Heating temperature: from 20ºC to 80ºC within 3 hours
Specific heat capacity of wood: 1.72 x10^3J/(kg.K)
Specific heat capacity of air: 1.003 x10^3J/(kg.K)
Air density (based on 15m3): 1.29Kg/m³
Heat loss: 15%

Step 1: to calculate power used for evaporating 20% moisture from 4 tons pine wood
Moisture to be evaporated: 4000*0.2=800kg
According to the law of conservation of energy, 720kW is required for evaporation of 1ton moisture with an hour, that is to say, evaporation of 800kg moisture within 3 hours requires 192kW P (moisture evaporation)=192Kw

Step 2: to calculate power used for warming up the air inside drying kiln
P (air) =1003J/kg*ºC×(15m³*1.29kg/m³)×(80-20)ºC÷(3600s*3)=108W=0.1kW

Step 3: to calculate power used to dry pine wood
P (pine wood) =1720J/kg*ºC×(4000*0.8)×(80-20)ºC÷(3600s*3)=30578W=31kW

Step 4: to calculate the total power
P (induction heating) = (P moisture evaporation + P air + P pine wood) *1.15= (192kW+0.1kW+31kW) *1.15=257kW

Five 50kW induction heating hot air generators are recommended.