Solve Heat Pump COP Equation with Q & T

[conv]

Homework Statement

someone who can help me choose which equation to use in this problem

Relevant Equations

COP=T(H)/( T(H)-T(L) ) or COP = Q(H)/ ( Q(H)-Q(L) )

I have tried to solve this with these equations:
COP=T(H)/( T(H)-T(L) ) and COP = Q(H)/ ( Q(H)-Q(L) )
But since I need both Q and T in the same equation, I can't find anything to solve it.

 

[Andrew Mason]

Homework Statement:: someone who can help me choose which equation to use in this problem
Relevant Equations:: COP=T(H)/( T(H)-T(L) ) or COP = Q(H)/ ( Q(H)-Q(L) )

View attachment 264041

I have tried to solve this with these equations:
COP=T(H)/( T(H)-T(L) ) and COP = Q(H)/ ( Q(H)-Q(L) )
But since I need both Q and T in the same equation, I can't find anything to solve it.

You have to use Q unless it is a reversible (Carnot) cycle. You are given Qh and QL so you can easily calculate COP using the equation you have. [the temperatures are not material to solving the problem]

AM