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A heat pump is used to heat a building. The outside air temperature is -10 C and the desired inside temperature is 20.3 C. The heat loss through the walls, ceiling, etc, is 30 kW. Determine the ideal coefficient of performance and the minimum power required to maintain the heated space at a constant temperature.
the change in diameter 2.5 in. of a large steel bolt is carefully measured as the nut is tightened. knowing that e 29 x
in water at a depth of 7 m the absolute pressure is read to be 164 kpa. determine a the local atmospheric pressure and
an engineer has proposed that a simple ideal rankine cycle that uses refrigerant-134a be used to produce work with heat
a radar station is tracking a plane flying at constant altitude with a speed of v0 600 mph. if at a given instant r
suppose an experiment is conducted as follows air at 300 k enters a smooth tube of 0.1 m in inner diameter and 6 m in
a two-engine jet transport has a loaded weight of 90000 lb and a forward thrust of 9800 lb per engine during takeoff.
unidirectional reinforced composites1. calculating the mechanical properties of unidirectionally reinforced composites
air at 200 kpa and 950 k enters an adiabatic nozzle at low velocity and is discharged at a pressure of 80 kpa. if the
for the meter-in flow control valve system the following data are givendesired cylinder speed 10 inseccylinder piston
air within a gas-piston assembly and initially at stp 1atm 300k undergoes a thermodynamic cycle consisting of the
materials have been used in engineering applications for thousands of years. sometimes these engineering structures or
A piston -cylinder device contains 0.06 m3 of saturated water vapor at 350 KPa pressure. Determine the temperature and the mass of the vapor inside the cylinder.
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