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collinsmark

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Yes, there is such a formula. It generally assumes that the heat pump (or refrigerator) is an ideal Carnot engine (maximum efficiency -- no losses due to friction, etc.)Just a quick question. Is there a formula for the coefficient of performance equation for just temperatures. All I have is the outdoor and indoor temperauture. How would I approach that?

You should be able to find this set of equations in your textbook or coursework. There is one COP equation for heating (such as what is used by a heat pump) and another, similar equation for cooling (such as what is used by a refrigerator or air conditioner).

Or you can derive it yourself. For an ideal system,

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because in my problem, i literally only have Tc and Th. how do i do that?

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Do you already have formulas for COP as a function of

because in my problem, i literally only have Tc and Th. how do i do that?

Make your substitutions. For example,

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In a heat pump, heat from the outdoors at -8.00 deg c is transferred to a room at 22 deg c, energy being supplied by an electrical motor. How mnay joules of heat will be delivered to the room for each joule of electrical energy consumed, ideally?

when it asks for joules of heat, what specifically is this asking me to solve for? and if i use the equation you wrote above, do i have to convert it to kelvin or can i leave it as celcius?

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collinsmark

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The coefficient of performance or COP of a heat pump is thewhen it asks for joules of heat, what specifically is this asking me to solve for?

So, the question is asking for just that. The question is asking for the COP of the system, assuming it is ideal.

And the question is asking for a

You absolutely have to convert to Kevlin!and if i use the equation you wrote above, do i have to convert it to kelvin or can i leave it as celcius?

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