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An electric fan heater contains a motor that blows hot air into the room. Describe the changes in the energy stores of the heater.
Ive been sitting here for half hour trying to understand it i dont know whether its asking for useful and wasted energy or not?
Ive been sitting here for half hour trying to understand it i dont know whether its asking for useful and wasted energy or not?
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#2
(Original post by CrysCrysxx)
An electric fan heater contains a motor that blows hot air into the room. Describe the changes in the energy stores of the heater.
Ive been sitting here for half hour trying to understand it i dont know whether its asking for useful and wasted energy or not?
An electric fan heater contains a motor that blows hot air into the room. Describe the changes in the energy stores of the heater.
Ive been sitting here for half hour trying to understand it i dont know whether its asking for useful and wasted energy or not?
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(Original post by Hallouminatus)
Energy stores are things like kinetic, potential, thermal, electric, chemical etc. Which of these are involved here, and how is energy transferred between them?
Energy stores are things like kinetic, potential, thermal, electric, chemical etc. Which of these are involved here, and how is energy transferred between them?
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#4
(Original post by CrysCrysxx)
Electric, thermal and kinetic?. Electric because of the movement of the fan, then thermal because of the heat being generated by the fan, then kinetic because of the sound also being made?
Electric, thermal and kinetic?. Electric because of the movement of the fan, then thermal because of the heat being generated by the fan, then kinetic because of the sound also being made?
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(Original post by Hallouminatus)
Yes, those are the three stores involved, but the explanation needs a bit more work. The fan heater has two main components: an electric heater which heats the air, and an electric fan, which moves the air over the heater. Think about energy input and output for each component.
Yes, those are the three stores involved, but the explanation needs a bit more work. The fan heater has two main components: an electric heater which heats the air, and an electric fan, which moves the air over the heater. Think about energy input and output for each component.
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#6
I'm glad it helped. Feel free to post a revised answer if you want further feedback.
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