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A vapor compression refrigeration cycle using R-134a as the working fluid has an evaporator temperature of -20°F, and a condenser pressure of 140 psia. The refrigerant is saturated at the inlet to the compressor and at the exit of the condenser. The adiabatic compressor efficiency is 84%. Determine the system COP.
given that the instantaneous voltage across a capacitor isvc401-e-tcrvoltswhen being chargerd by a 40 volt dc supply
A rectangular gate is used as a retaining wall for seawater as shown in the figure. The gate is hinge at point O 1 m from the bottom. Determine the depth of seawater required for the resultant force to be located at the hinge. The gate width into the..
1045 steel is carburized at 650 degree c for 500 hr. the carbon concentration is 0.6 wt at a position of 3.7 mm beneath
consider a household 120 v two-plug electric outlet protected by a 15 a circuit breaker. a you plug in a hair dryer and
the 14 slider a is pushed along the circular bar by the slotted bar. the circular bar lies in the horizontal plane. the
a liquid piston stirling engine is shown below. assume that the gas contained in the two sealed pistons is a true ideal
An airfoil is moving through the air at 300 mph at 15,000ft pressure altitude. The temperature recorded is 45F.(Assume Compressible Flow) At a point on the airfoil upper surface is 360 mph. What is the pressure at this point? if this be the average p..
What is the shortcut equations used for evaluating the heat added to air by a steam coil. Use a sketch to present information on both the air side and steam side of this heat exchanger.
an accelerometer indicates that part of a machine element is vibrating harmonically at 82cps with a maximum
calculate the hourly gas flow rate for the conditions given as followsreadings differential pressure 50-in water static
a heat pump with a cop of 2.4 is used to heat a house. the house is losing heat to the outside at an average rate of
a cylindrical bar of aluminum 19 mm 0.75 in in diameter is to be deformed elastically by application of a force along
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