Consider unsteady fully developed Coutte flow between two infinite parallel plates. This problem involves the following paramete
rs such as velocity component u, distance between the plates h, vertical distance y, top plate speed V, fluid density rho , fluid viscosity mu , and time t .
The number of expected dimensionless parameters pi subscript s of this problem is:
a. 6
b. 5
c. 4
d. 3
e. 2
The number of expected dimensionless parameters pi subscript s of this problem is:
a. 6
b. 5
c. 4
d. 3
e. 2
1 answer:
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Answer:
a)
Explanation:
a) Let consider that heat pump is reversible, so that the Coefficient of Performance is:
The minimum heat received by the house must be equal to the heat lost to keep the average temperature constant. Hence:
The minimum power supplied to the heat pump is: