## Calculate time for heat to transfer through a plate

## Calculate time for heat to transfer through a plate

(OP)

Hi all,

I seem to have ‘blank brain’ (must be getting old)

I need to calculate an approximate time for heat to transfer through a plate….. here is the scenario…

A mild steel plate 0.01m thick

Heated from 1 side by a flame torch ( say oxy acetylene) which is about 3000c

The nozzle is approximately 0.01m in diameter

Starting from ambient temperature of 15c, how long until the cold side reaches 500c (just the area the nozzle will heat, not the whole plate)

K (thermal conductivity)for mild steel is 45W/m.K

Specific heat capacity of mild steel is 420 J/kg°C

Does anyone know the formula to determine the time in seconds?

Thanks in advance,

Befuddled

I seem to have ‘blank brain’ (must be getting old)

I need to calculate an approximate time for heat to transfer through a plate….. here is the scenario…

A mild steel plate 0.01m thick

Heated from 1 side by a flame torch ( say oxy acetylene) which is about 3000c

The nozzle is approximately 0.01m in diameter

Starting from ambient temperature of 15c, how long until the cold side reaches 500c (just the area the nozzle will heat, not the whole plate)

K (thermal conductivity)for mild steel is 45W/m.K

Specific heat capacity of mild steel is 420 J/kg°C

Does anyone know the formula to determine the time in seconds?

Thanks in advance,

Befuddled

## RE: Calculate time for heat to transfer through a plate

Einstein gave the same test to students every year. When asked why he would do something like that, "Because the answers had changed."

## RE: Calculate time for heat to transfer through a plate

## RE: Calculate time for heat to transfer through a plate