Question

In convection, heat is transferred____​

Answer 1

From the given question the correct answer is:

3. by direct contact with a heat source.

• In convection, heat is transferred by direct contact with a heat source.
• As convective heat transfer is one of the major mechanisms of heat transfer.

• The process of heat transfer between a surface and a fluid flowing in contact with it is called convection heat transfer
• When heat is to be transferred from one fluid to another through a barrier, convection is involved on both sides of the barrier.

Answer 2

• Convective heat transfer is that the transfer of warmth between 2 bodies by currents of moving gas or fluid.
• In free convection, air or water moves far away from the heated body because the heat air or water rises and is replaced by a cooler parcel of air or water.
• Convective heat transfer happens at intervals in a fluid itself and is applied by the transfer of 1 fraction of the fluid to the remaining portion. The transfer of molecules happens throughout convection.
• Since the movement of particles constitutes convection, it's the macro variety of heat transfer.
• Also, convection is simply potential in fluids wherever the particles will move simply, and also the rate of convective heat transfer depends on the speed of flow to an excellent extend.