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Ten pounds-mass of R-22 is at an initial volume of 4.059 ft3 and pressure of 200 psia. It is compressed isobaric ally until its volume is two-thirds of its initial volume. The piston is then held in place as the refrigerant cools until its temperature is 70 F. Determine the heat transfer [Btu] and work transfer [Btu] for the two-step process. Also show the process on P-v state diagram.
Size a suitable orifice plate to meter the steady flow of water at 20 °C through 138 cm diameter pipe if the nominal flow rate expected is 200 kg/s and the pressure drop must not exceed 15 cm mercury.
to make ice at 1 atm 101.3kpa water at 25 degrees c is cooled to 0 degrees c and then frozen to ice 0 degrees c by
a closed cylindrical storage tank contains gas under pressure p and has an inner diameter of 24 in. and a wall
water flows upward through a variable area pipe with a constant flowrate q dz is the diameter of the variable area pipe
Simplify the following terms and get rid of the brackets as much as possible. All matrices in the equations below are square 3x3 matrices, [alpha] is a scalar, and Q is an orthogonal matrix.
an aluminum pan whose thermal conductivity is 237 has a flat bottom whose diameter is 20 cm and thickness 0.4 cm. heat
A flywheel can be considered as being composed of a thin disc and a rim. The rim weighs 322 lb and has diameters of 24 in. and 30 in. The disc weighs 64.4 lb. Determine the mass moment of inertia about the centroidal axis about which the flywheel ..
A motor has a disk mounted on its shaft. The disk has a diameter of 1 foot and weighs 60 pounds. Starting from rest, the motor rotates at 350 rpm after 5 seconds. If the motor has a 92% efficiency, determine the input power in watts.
a carnot heat pump is to be used for heating house in winter. the house temperature is set at 25oc. one day the outdoor
question 1 give examples from your own experience of situations where friction is a desirable and b
a timber beam is to be selected to sustain a maximum transverse shear of vmax 50 kn without exceeding an allowable
consider a 77.0-kg man standing on a spring scale in an elevator. starting from rest the elevator ascends attaining its
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