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A heat pump that operates on the ideal vapor compression cycle with refrigerant - 134a is used to heat a house. The mass flow rate of the refrigerant is 0.180 kg/s. The condenser and evaporator pressure are 900 kpa and 200 kpa, respectively. Show the T-S diagram with respect to saturation lines and determine a) The rate of heat supply to the house b) The volume flow rate of the refrigerant at the compressor inlet and COP of this heat pump.
A construction crew lifts approximately 560 lb of material several times during a day from a flatbed truck to a 32 ft rooftop. A block and tackle system with 50 lb of effort force is designed to lift the materials.
a temperature scale is defined by the equation tsti lim pi-0 pspi1.36609 as in gas thermomery but now the reaumur
a long rod is exposed at air at 298oc. it is heated at one end. a steady state condition the temp at 2points along the
air enters a compressor at ambient conditions of 100kpa and 17 degc with a low velocity and exits at 1mpa 327 degc and
a grade 30 cast iron pressure vessel has a sealed head diamter of 20 inches. it uses ten 114 unf steel studs that are
a block of mass 10kg moves along a surface inclined 30acircdeg relative to the horizontal. the center of gravity of the
a cube is originally at 100 degree. from t 0 on the faces are held at 0 degree. find the time-dependent temperature
Entropy Generation in a Steam Turbine, Steam at a rate of 15lbm/s enters a turbine at 500 Psia, 800f and exits at 5 Psia. For a reversible, adiabatic process (iseentropic)
steam expands in a turbine steadily at a rate of 36048 kgh entering at 8 mpa and 600degc and leaving at 20 kpa as a
consider a person standing in a room at 18c. determine the total rate of heat transfer from the person if the exposed
the ultimate analysis of a no.4 fuel oil is 86.47 wt carbons. 11.65 hydrogen 1.35 sulfur and the balance noncombustible
a gearbox is needed for an input shaft that rotates at 1000-1600 rpm and an output shaft that rotates at 75 plusmn1 and
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