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Question
Which of the following involve heat transfer through convection?
Which of the following involve heat transfer through convection?
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Solution
The correct options are
A Exhaust fans
B Home ventilators
C Air conditioners
Convection is a process of heat transfer occurring in liquids and gases. When a fluid (liquid or gas) is heated, it becomes less dense, and rises up. This causes the colder parts of the fluid to move towards the heat source, thereby generating a convection current.
Appliances like ACs, ventilators, and exhaust fans involve convection, as they all are placed closer to the roof. They let the hot room rising up in the room to escape out of the room, thereby making the room cooler.
Microwave ovens do not primarily involve convection, as they emit microwaves into the food, in which case, radiation is the mode of heat transfer.
A Exhaust fans
B Home ventilators
C Air conditioners
Convection is a process of heat transfer occurring in liquids and gases. When a fluid (liquid or gas) is heated, it becomes less dense, and rises up. This causes the colder parts of the fluid to move towards the heat source, thereby generating a convection current.
Appliances like ACs, ventilators, and exhaust fans involve convection, as they all are placed closer to the roof. They let the hot room rising up in the room to escape out of the room, thereby making the room cooler.
Microwave ovens do not primarily involve convection, as they emit microwaves into the food, in which case, radiation is the mode of heat transfer.
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