Hi,(adsbygoogle = window.adsbygoogle || []).push({});

I have been trying to set up a funtcion of the temperature over time and im doubting my results.

In the system i have:

Fig 1.

The system is at rest. For simplicty I've considerd the ambient temperature to be same as T1.

By knowing:

Fig 2.

yeilds:

Fig 3.

In my case B&C is at a constant Temperature of 15°C and Body A 115°C.

The specific heat cond and heat transfer coeff for A is:

0,19 W/m

1700 J/kg

For A:

Length = 2.41m

Width = 2.071m

Depth = 0.01m

Density = 950 kg/m3

For Fig3. i end up with L=0.01m A=0.0207m2 and m = 47.4 kg.

By using the function above and plotting over 60 sec i get.

Fig 4

I'm not satisfied with my end result and wondering if anyone can see if there are any obvious errors?

Best Regards

Mikael

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# A Heat Transfer -- Newton's law of cooling

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