The simple mechanism shown in the Figure can be calibrated to measure the temperature change. Use dimensions of a = 25 mm, b = 90 mm, and L1 = 180 mm. The coefficient of thermal expansion for member (1) is 23.0×10–6 /°C. Determine the horizontal displacement pointer tip D of the mechanism shown in response to a temperature increase of 35°C. Assume that pointer BCD is not affected significantly by temperature change.

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Work and Heat Transfer

It is generally related to thermal engineering which tells about the use, creation, conversion and transfer of heat energy between the systems. It is also considered that to transfer heat from one source to another, transfer of masses is also required. There are various mechanisms by which, transfer of heat takes place i.e. thermal conduction, convection, radiation or by change of phase. All these mechanisms have their own specific features which sometimes occur simultaneously within the same system.