# Some sort of heat equation

1. Feb 6, 2006

### TSN79

I'm considering a wall, using this equation:

$$Q_P + \rho \cdot C_P \cdot \dot V\left( {T_O - T_R } \right) = U \cdot A\left( {T_R - T_O } \right)$$

Where QP is added effect (an oven), $\dot V$ is air-flow, and the rest should be self-explanatory. I'm just not sure what it tells me. The right side gives me the leakage of heat, but I'm not sure what the left side says. Could someone explain?

2. Feb 7, 2006

### FredGarvin

Energy in = Energy out...

It looks like you have the input energy in the form of Qp and a stored energy component in the moving air stream. I'm still wondering about the units in that group though...

3. Feb 7, 2006

### TSN79

Well it's Watt on both sides...

4. Feb 9, 2006

### thearny

Q=MCpdT
so yeah heat flows, energy in=energy out.
But I think its Joules on either side.