A heat pump with refrigerant-134a as the working fluid is used to keep a space at 25°C by absorbing heat from geothermal water t
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Answer:
The maximum water pressure at the discharge of the pump (exit) = 496 kPa
Explanation:
The equation expressing the relationship of the power input of a pump can be computed as:
where;
m = mass flow rate = 120 kg/min
the pressure at the inlet = 96 kPa
the pressure at the exit = ???
the pressure = 1000 kg/m³
∴
400000 = P₂ - 96000
400000 + 96000 = P₂
P₂ = 496000 Pa
P₂ = 496 kPa
Thus, the maximum water pressure at the discharge of the pump (exit) = 496 kPa
Solution :
Given :
Operation time, = 3000 hours per year
Operation time, = 2000 hours per year
The density, ρ =
The wind blows steadily. So, the K.E. =
The power generation is the time rate of the kinetic energy which can be calculated as follows:
Power =
Regarding that . Then,
Power → Power = constant x
Since, is constant for both the sites and the area is the same as same winf turbine is used.
For the first site,
Power,
For the second site,
Power,