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A residential heat pump with a coefficient of performance of 2.4 delivers energy to the dwelling at a rate of 20 kW. Determine the net power required to operate the heat pump, in kW.
complete the following exercises. in each case locate the state on sketches of the t-v and p-v diagrams. four kg of
Determine the factor of safety against net section yield in the presence of the crack and determine the factor of safety against brittle fracture for the same conditions.
An iceberg with specific gravity (SGice) of 0.92 is partially submerged in seawater whose specific gravity is SGw= 1.025. Determine the relative volume of the iceberg that appears above the surface of the sea.
a refrigerant 134a at 140 kpa and -10 degree celcius is compressed by an adiabatic 16kw compressor to an exit state of
Why does the definition of NPSH include the dynamic head of the fluid? Isn't cavitation based only on the difference between the static head and the local vapor pressure?
A household refrigerator with a coefficient of performance of 2.4 removes energy from the refrigerated space at a rate of 600 Btu/h. Evaluating electricity at , determine the cost of electricity n a month when the refrigerator operates for 360 hou..
a centrifugal fan is to be used to take a flue gas at rest zero velocity and at a temperature of 352.6k and a pressure
A bullet is fired vertically at a latitude of 50 degrees N with a muzzle speed of 1000m/s. Neglecting air friction, determine the landing point of the bullet.
a velocity field is specified as v ax2i bxyj where a 2 m-1s-1 b -4 m-1s-1 and the coordinates are measured in
consider the steady operation of a refrigeration package for a shipping container on a train truck or ship. the package
air enters a compressor at 179 kpa and 290 k and exits at a temperature of 500.9 k. determine the power kw for the
a stationary probe is placed in a fluid flow and measures pressure and temperature as functions of time at one location
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