Reference no: EM13847417

Here is a lab guide for an experiment .. i need a report about the free stream convection not the forced and the report has to have 2Results/2Discussion/2Conclusion ( kind of similar just different wording )

In most applications a 'heatsink' cools a critical component such as an engine cylinder head or electronic component. Therefore, a suitable and simple comparison of the surfaces is to apply a fixed input power and air flow (natural), while measuring surface temperature. The surface that reaches the highest surface temperature will be the least effective at transferring heat to air. Therefore the surface that reaches the lowest temperature will be the most effective at transferring heat to air.

Aims

To compare the maximum temperature each surface reaches for a given input power when in free convection.

Procedure

1. Remove the fan from the top of the duct as shown in To Fit or Remove the Fan on page 28.

2. Fit your chosen heat transfer surface as shown in To Fit a Heat Transfer Surface on page 28.

3. Create a blank results table, similar to Table 1. If you have VDAS, the software will create a table for you automatically when you start taking readings.

4. Increase the power to 15 Watts.

5. Wait for the temperatures to stabilise while readjusting the power if necessary and record the maximum temperature each surface reaches.
6. Record the inlet (ambient temperature).

7. Switch off the heater and allow the surface to cool down to near ambient temperature.

8. Repeat the experiment for the other heat transfer surfaces.

Attachment:- LAB EXP1.docx