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Refrigerant-134a enters an adiabatic compressor as saturated vapor at -24 degrees Celsius and leaves at 0.8 Mpa and 60 degrees Celsius. The mass flow rate of the refrigerant is 1.2 kg/s. Determine (a) the power input to the compressor and (b) the volume flow rate of the refrigerant at the compressor inlet.
two firefighters must apply a total force of 620 n to steady a hose that is discharging water at the rate of 3150 lmin.
nine kg of air is initially contained in a rigid tank at 1000 kpa and one kg of air occupies space in a piston-cylinder
the pressure tap on the surface of a heat exchanger tube is connected via flexible tubing to a pressure transducer.
determine the change in specific entropy between states 1 and 2 of the fluids given belowa r-134a. state 1 t10c p1 4.1
determine the smallest horizontal force required to lift the 260- crate. the coefficient of static friction at all
consider a regenerative rankine cycle with a 600c and 4-mpa throttle a 5-kpa condenser and an open feedwater heater at
an overhead door is guided by wheels at a and b that roll in horizontal and vertical tracks. knowing that when theta
In an air-water vapor mixture at 30°C, the partial pressure of the water vapor is 1.5kPa, and the partial pressure of the dry air is 100.5kPa. What is the relative humidity of the air-water vapor mixture?
A vehicle of mass 1500kg and track 1.8m has a centre of mass located centrally at 1,1m above the ground. It has to travel around a bend of 56m radius to the centre of mass.
We want to produce 20 kg/s of saturated water vapor by mixing steam at 350oC with liquid water at 20oC. The adiabatic mixing process occurs at a constant pressure of 10 MPa. During the mixing process, a stirring mechanism does work on the mixture at ..
Consider a cubic crystal with the lattice constant a.Sketch the unit cell with the crystallographic planes having Miller indices (011) and (033). What is the spacing d between these two parallel planes? Explain your answer. Include additional sketche..
during a certain process the specific hea capacity of the system is given by cn0.40.004t-273kjkg-k. temprature is
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