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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 0.32 kg/s. The condenser and evaporator pressures are 900 and 200 kPa, respectively. Show the cycle on a 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
(c) the COP of this heat pump.
what is the magnitude and direction of the force of the water n the nozzle, if the nozzle is held steady/2- what is the FORCE if the fire fighter is running towards the fire, with the hose at a velocity of 1.5 m/s
Water at a pressure of 13 atm, at street level, flows into a building at 3m/s through a 6 cm diameter pipe. The pipe tapers down to a 2 cm diameter by the top floor 50 m above. The density of water is 1,000 kg/m^3. Calculate the water pressure and ve..
The basic barometer can be used to measure the height of abuilding. If the barometric readings at the top and at the bottomof a building are 28.7 and 29.7 in Hg, respectively, determine the height of the building in feet. Assume an average density of..
a sewage treatment works stw with 4 single-stage trickling filters has become organically overloaded due to the
A 100 ft cut steel tape was used to measure between two property markers. The rear surveyor held 93 ft, while the head surveyor cut .67ft. What was the distance between the markers?
Design a Portland cement concrete mix for a loading dock driveway slab. The concrete will be exposed to deicing chemicals and subjected to freezing and thawing in a moist condition. This is severe environmental exposure.
Find the coeficient of friction between the trusses and the inclined. Three trusses are 1m long 1kg each.
Calculate the freezing point of aqueous 0.369 m LiCl on the assumption that it is 100% dissociated. Calculate the freezing point if the percent dissociation is 0%.
On a single graph, show how the Gibbs energies of each of these phases vary with temperature between - 20 C and 150 C for a constant pressure of 80 kPa. You can start your computations at the triple point
The tube supports the four parallel forces. Determine the magnitude of the forces and acting at C and D so that the equivalent resultant force of the four forces acts at point O.
At what concentration in ppmv (1.0 atm, 25 C) is the risk from trichloroethylene exposure at an industrial facility equal to 10^-4 for a 70-kg adult male, if the lifetime exposure occurs for 310 days per year over 29 years
A six-lane divided highway is to be designed to replace an existing highway. The present AADT (both directions) of 6000 vehicles is expected to grow at 5% per year. Assume SN = 4 and pt = 2.5
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