Can the one term approximate solutions for a plane wall exposed to convection on both sides?

Can the one term approximate solutions for a plane wall exposed to convection on both sides?

Yes. A plane wall whose one side is insulated is equivalent to a plane wall that is twice as thick and is exposed to convection from both sides.

Which one of the following is not a direct contact condenser?

Which one of the following is one of them? Explanation: The baffled column has a shell in which the hot fluid flows and the tubes carrying the coolant, condensation occurs at the surface of the tubes. Hence the coolant does not come into direct contact.

How does heat transfer affect condensation?

When vapor comes in contact with the surface of an object kept at a temperature lower than the saturation temperature, it condenses into a liquid with the release of latent heat. The heat transfer accompanied by condensation is called condensation heat transfer.

Is condensation a method of heat transfer?

In general, condensation is the change of the physical state of matter from gas phase into liquid phase, and is the reverse of vaporisation. Flow processes associated with condensation on a solid surface are almost a mirror image of those involved in boiling.

What type of heat transfer is condensation?

Condensation is a warming process. Latent heat of fusion describes both changing from solid to liquid and from liquid to solid. From solid to liquid, about 80 calories per gram are needed. From liquid to solid, about 80 cal/g are released.

Is heat absorbed or released during condensation?

The condensation is the opposite process of evaporation. Latent heat of condensation is energy released when water vapor condenses to form liquid droplets. The latent heat of condensation is defined as the heat released when one mole of the substance condenses.

What happens when heat is removed from a system?

If heat is removed from a substance, such as in freezing and condensation, then the process is exothermic. In this instance, heat is decreasing the speed of the molecules causing them move slower (examples: liquid to solid; gas to liquid). These changes release heat to the surroundings.