Find the minimum power of the electric motor

Reference no: EM13249036

As a engineer, you are designing a heat pump that is capable of delivering heat at the rate of 18 kW to a house. The house is located where, in January, the average temperature is?10°C. The temperature of the air in the air handler inside the house is to be 39°C.

(a) What is the maximum COP for a heat pump operating between these temperatures?

(b) What must be the minimum power of the electric motor driving the heat pump be?

(c) In reality, the COP of the heat pump will only be 60 percent of the ideal value. What is the minimum power of the electric motor when the COP is 60 percent of the ideal value?

Reference no: EM13249036

Questions Cloud

What is the maximum compression of the bar : A person drops a cylindrical steel bar (Y = 6.0 × 1010 Pa) from a height of 2.00 m (distance between the floor and the bottom of the vertically oriented bar). The bar, of length L = 0.58 m, radius R = 0.50 cm, what is the maximum compression of the..

Find the average power delivered to the entire circuit : A series ac circuit contains a 250? resistor, a 20.0mH inductor, a 3.50?F capacitor, Find the average power delivered to the entire circuit

Find the entropy change of the universe : A 171 kg block of ice at 0.0°C is placed in a large lake. The temperature of the lake is just slightly higher than 0.0°C, and the ice melts very slowly, What is the entropy change of the universe

Find the resonance angular frequency of the circuit : In a series R-L-C circuit, L = 0.205H , C = 80.5?F and the voltage amplitude of the source is 260V, What is the resonance angular frequency of the circuit

Find the minimum power of the electric motor : In reality, the COP of the heat pump will only be 60 percent of the ideal value. What is the minimum power of the electric motor when the COP is 60 percent of the ideal value

Find the change in the trucks kinetic energy : A 2100 kg truck traveling north at 41 km/h turns east and accelerates to 54 km/h, What is the change in the truck's kinetic energy

Calculate the resistance of the windings : When the coil of a motor is rotating at maximum speed, the current in the windings is 4.33 A. When the motor is first turned on, calculate the resistance of the windings.

Determine the resulting angular acceleration : If you put a 0.28 kg mass 15 cm from the axis of a massless disk, and you apply a 0.4 N force on a string wrapped at the disk's edge, what is the resulting angular acceleration

Find the angular acceleration you expect from falling object : If you apply a 4 N force on a string wrapped around an object that has an inertia of 0.03 \mathrm{kg\:m}^2 , what is the angular acceleration you expect from the falling object

User Account

All Pages