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(2a). Find the temperature of water at 200 kPa and specific enthalpy of 350 kJ/kg
(2b). A heat pump and a refrigerator operate on same cycle between same hot and cool reservoir at temperature TH, and TL, respectively. Please demonstrate = +1 COPHP COPRF and comments if this equation can only applied to heat pumps and refrigerator operated with reversible cycle.
The velocity field of a flow is given by V = (3y + 2)i + (x - 8)j + 5zk , where x, y, and z are in feet. Determine the fluid speed at the origin (x = y = z = 0) and on the y axis (x = z = 0). First, determine the fluid speed at the origin (x = y = z ..
Argon is compressed in a polytropic process with n=1.2 from 120 kPa (P1) and 10 °C (T1) to 800 kPa (P2) in a piston-cylinder device. List all the assumptions. Derive the equation of the boundary work (kJ/kg) in terms of P1, T1, & P1. It should includ..
an 8 ft3 tank contains air at an initial temperature of 80f and intial pressure of 100psi. the tank develops a small
In a car engine gasoline (assume octane C8H18) is evaporated and then mixed with air in a ratio of 1:15 by mass. In the cylinder the mixture is at 750 kPa, 650 K when the spark fires. For that time find the partial pressure of the octane and the spec..
a belt pulley is fastened to a 75 mm shaft running at 360 rpm by means of a key 18 mm wide and 125 mm long. the
air at 80 degrees fahrenheit and 80 percent relative humidity is cooled to 51 degrees fahrenheit at a constant pressure
a diffuser for an incompressible inviscid fluid of density ? 1000 kgm3 consists of a diverging section of pipe. at the
calculate the force necessary to accelerate a 20 kg 400mm diameter sphere which is at rest under water at the rate of 5
a tube with elastic modulus of 75 gpa is used to support a compressive load. it is required that this tube must not
Determine the reliability of a system having a capacity that is lognormal with a median of 100 and s = 0.6 subject to a load that is lognormal with a median of 20 and s = 0.8.
2-kg of saturated liquid r-134a with an initial temperature of -10 c is contained in a well-insulated weighted post
A cylindrical drill with radius r1 is used to bore vertically a hole through the centre of a sphere of radius r2.
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