In an air conditioner, a substance that easily evaporates and condenses is used to transfer energy from a room to the air outside. When the substance evaporates,

PHYSICAL SCIENCES

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Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]

A	it absorbs energy as heat from the surrounding air
B	it transfers energy as heat to the surrounding air
C	energy is transferred by conduction
D	energy is transferred by convection

Explanation:

Detailed explanation-1: -A heat exchanger is a system used to transfer heat between a source and a working fluid. Heat exchangers are used in both cooling and heating processes. The fluids may be separated by a solid wall to prevent mixing or they may be in direct contact.

Detailed explanation-2: -Convection: Convection is the transfer of heat from a surface by means of a fluid such as air. Natural convection occurs as air is heated: it expands, rises, and is replaced by cooler air.

Detailed explanation-3: -Conduction is the process by which heat energy is transmitted through collisions between neighboring atoms or molecules. Conduction occurs more readily in solids and liquids, where the particles are closer together than in gases, where particles are further apart.

Detailed explanation-4: -radiation. conduction. convection.

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