Question

In the case of air cooling, the boundary layer as on the gas side offers great resistance, but the effect of this is compensated largely by providing more surface areas by way of cooling pins.

(a) True

(b) False

This question was posed to me in homework.

Asked question is from Engine Heat Transfer topic in section Heat Rejection and Cooling of IC Engine

Answer 1

The correct answer is:

(a) True

In air cooling systems, the boundary layer on the gas side does indeed create resistance to heat transfer, as it reduces the efficiency of heat exchange between the engine surface and the surrounding air. However, this resistance is largely compensated for by increasing the surface area of the engine components, such as by using cooling pins or fins. These additional surfaces help enhance the heat dissipation process by increasing the contact area between the engine surface and the cooling air.