Power and heat conversion? First figure out the units and symbols of power and heat.
(1) Watt is the power unit, symbol: W,
Kilowatt is the power unit, symbol: KW,
1 kW = 1000 watts
(2) Joule is a thermal unit, symbol: J
KJ is a thermal unit, symbol: KJ
1 kJ = 1000 joules
1 kW·hour = 860.04 big card 1 big card ≈ 4186 joules
For example: How much heat is 2KW power?
Heat = 2 * 86.04 * 4186 = 7200254.88 joules
For example: cast aluminum heating plate, specifications: 300 * 320 * 20mm, required temperature 400 ° C, power calculation:
First find the surface area: 30*32*2+30*2*2+32*2*2=1920+120+128=2168cm2,
Secondly, the surface temperature is required to be 400 ° C, and the surface load is selected to be 1.8 W/cm 2 .
The final calculation power 2168*1.8=3902.4W