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Insulation
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∙ 12y ago
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Which heat transfer method is responsible for cold draughts in poorly insulated houses?
Mainly radiation, although conduction does play a part too
Why a thermaflask has double walls?
The double walls are required to contain a vacuum which prevents the transfer of heat, so the contents of the flask remain hot (or cold) for longer.
Describe the method of heat transfer involved when you mix hot water with cold water to make lukewarm water?
conduction and convection
Can a cold spoon transfer heat?
No. Heat can only be transferred to a cold spoon, not the other way round (as there is no heat in a cold spoon to transfer). A simple example is when a cold teaspoon is used to stir a hot cup of tea. When the spoon is withdrawn, it is hot.
What is the directinality of heat transfer?
From "hot" to "cold".
Which heat transfer method is responsible for cold draughts in poorly insulated houses?
Mainly radiation, although conduction does play a part too
Which heat transfer is responsible for cold draughts in poorly insulated houses?
Mainly radiation, although conduction does play a part too
Why a thermaflask has double walls?
The double walls are required to contain a vacuum which prevents the transfer of heat, so the contents of the flask remain hot (or cold) for longer.
Describe the method of heat transfer involved when you mix hot water with cold water to make lukewarm water?
conduction and convection
Do draughts case neck ache?
Possibly. Our bodies don't like to be cold and muscles may react by tensing up when exposed to draught.
What is hot to cold?
hot to cold is heat transfer
When you dip your hand in cold water you feel it cold. Can you name the mode of heat transfer and its direction?
This type of heat transfer is called conduction. The transfer is from the warm hand to cool water.
When you dip your hand in cold water you feel it cold can you name mode of heat transfer and its direction?
When you dip your hand in cold water you feel it cold. Can you name the mode of heat transfer and its direction?
What factor that prevents temperature extremes in New Zealand?
it is affected by the latitude and it's altitude
Can a cold spoon transfer heat?
No. Heat can only be transferred to a cold spoon, not the other way round (as there is no heat in a cold spoon to transfer). A simple example is when a cold teaspoon is used to stir a hot cup of tea. When the spoon is withdrawn, it is hot.
What is the directinality of heat transfer?
From "hot" to "cold".
Is saliva te only way to transfer a cold sore?
The only way that I know of to transfer a cold sore is, saliva or actual viral fluid from a blister! Kissing or oral sex are two ways that cold sores are transfer. Once a person has this virus is can not be eradicated.
