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A R-12 plant is to develop 5 tons of refrigeration. the condenser and evaporator temperature are to be 40c and -10 c respectively. Determine
a) the referigeration flow rate in kg per second
b) the volume flow rate handled by the compressor in cubic meters per second
c) the compressor discharge temperature
d) the pressure ratio
e) the heat reject ed to the condensor in kilowatts
f) the flash gas percentage after throttling
g) the cop
h) the power required to drive the compressor
i) how does this cop compare with that of a carnot refrigerator operating between 40 c and -10 c.
a rocket is fired from rest at x0 and travels along a parabolic trajectory described by y2120103xm. if the x component
a gate in the shape of a quarter cylinder hinged at a and sealed at b is 3 m wide. the bottom of the gate is 4.5 m
but they vary in number of outputs, interfacing, cascadability, current limiting, and drive capability. As always, examine the data sheets carefully before substituting these parts! What is a Capacitor?
a robot arm moves so that p travels in a circle about point b which is not moving. knowing that p starts from rest and
Name products that are manufactured using these processes and write two sentences on why you know it's made from this process.
Design a wide flange, simply supported beam below so that the stress due to bending does not exceed that allowed by AISC for A36 steel and calculate the shear stress where the parts join as indicated. Maximum V = 10,000 lb.
a compressor pressurizes air from 1 atm to 2.38 atm at steady state. at the entry the airs temperature is 70f whereas
Entropy Generation in a Steam Turbine, Steam at a rate of 15lbm/s enters a turbine at 500 Psia, 800f and exits at 5 Psia. For a reversible, adiabatic process (iseentropic)
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a horizontal pipe has an abrupt expansion from d1 8 cm to d2 16 cm. the water velocity in thenbspsmaller pipe is 15
the carnot cycle is defined as having a certain specific first step the isothermal expansion of a gas. can a carnot
The link BD is a single solid bar with a width x thickness measuring 1.000 in. x 0.50 in. If the pins at A, B and D have a diameter of 0.375 in, determine the average normal stress in link BD when:(b) Fx = 0 and Fy =4.00 kips.
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