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Consider an ideal vapor-compression refrigeration cycle. The refrigerator employs Refrigerant 134a as the working fluid and operates at steady state. At the compressor inlet, saturated vapor enters at -10 °C, and saturated liquid leaves the condenser at 30 °C. The mass flow rate of refrigerant is 0.08 kg/s. Determine:
(a) the rate of heat rejection from the condenser, in kW,
(b) the compressor power, in kW,
(c) the coefficient of performance.
a hydraulic shear applies 2000 lb force to a wedge. it is used to shear plate steel to rough size. the shear has a 14
air flows through an adiabatic internally reversible compressor at a rate of 0.04 kgs. at the inlet thepressure is 200
the following factors need to be tested through a doe. it deals with a product made from these constituents. the
a boiler is fed with a distillate fuel oil of composition c9h16o2n0.03. combustion occurs with 20 excess air. assume
cylinder containing ch4 c2h6 and n2 has to be prepared in which the ratio of the moles of ch4 to c2h6 is 1.3 to 1.
determine the thermal efficiency and the required steam flow rate kgs for a reheat-regenerative steam power plant which
water is pumped at a rate of 1.57 cfs from one large open tank into another through a 6 in diameter cast iron pipe 400
A spur gear has 48 teeth with a diametral pitch of 8 and a pressure angle of 20 deg. The face width is 0.75 inches. If the gear is transmitting 25 HP at 250 rpm
two bars one having a circular section of radius b the other an elliptic section with semiaxes ab.for equal angles of
the triangular plate rotates about a fixed axis through point o with the angular properties indicated determine the
a clock is slow such that it falls behind 15.2 min in every hour. calculate the angular velocity of its second hand the
for a first order system with a transfer function of 15s2 given a unit step input pleasea. derive the transfer function
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