Knowledge
Design data of the micro heater
１．Calculation of electric capacity
Calculation of heat depending on the heating object is available. Contact us for details.
- Power Density and Surface Temperature of Micro Heater Surface in Still Air (Reference)
- Relationship between the power density of the object to be heated and the heater surface
| Workload | Power density(W/cm2) |
|---|---|
| Water | 5 ～ 10 |
| Water vapor | 1 ～ 3 |
| Machine oil | 2 ～ 3 |
| Piping outer winding | 1 |
| In vacuum | 1 |
２．Ohmic law
|
I = E R E = I x R R = E I W = I x E W = E2 R |
I:Electric current(A) E:Voltage(V) R:Resistance(Ω) W:Capacity(W) |
３．How to determine the power density on the heater surface
|
Wd = W π x D x Lw |
Wd:Power Density(W/cm2) W:Capacity(W) π:Circumferential ratio(3.14) D:Diameter of a sheath(cm) Lw:Sheath length(cm) |
