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An automobile air conditioner uses refrigerant-134aas the cooling fluid. The evaporator operates at 275 kPagauge and the condenser operates at 1.7 MPa gage. The compressorrequires a power input of 6 kW and has an isentropicefficiency of 85 percent. Atmospheric air at 22°C and 50 percentrelative humidity enters the evaporator and leaves at 8°Cand 90 percent relative humidity. Determine the volume flowrate of the atmospheric air entering the evaporator of the airconditioner, in m3/min.
What would be the resistance on a level road. What horsepower must be delivered to the wheels on the grade? If the efficiency is 80%, what must be the rated horsepower of the motor.
Draw block diagrams of the unit operations necessary to treat the following wastes to effluent levels of BOD5 = 200 mg/L, SS = 100 mg/L, P = 5 mg / L (required for discharge into a sanitary sewer).
Plot the adiabatic flame temperature and kmoles of CO2, CO, and NO at equilibrium for values of percent excess air between 10 and 100 percent.
Motor D and pulley G weigh W and w respectively. When the motor is turned off, the belt tension is T. The force P acts on member ACF, not on pin F. Determine the tension in the cable CB.
A rod consisting of two cylindrical portions AB and BC is restrained at both ends. Portion AB is made of steel (E=29x10^6 psi, α=6.5x10^-6) and portion BC is made of aluminum (E=6.5x10^-6 psi, α=13.3x10^-6).
World population reacted 4billion in 197 Use the doubling time approximation (3.5) to estimate the exponential rate of growth that would produce those numbers. Use the exponential growth equation (3.6) to find the growth rate
The specific heat capacity Cp of the process fluid is not known at the mean bulk fluid temperature but is a linear function of temperature, and must be calculated using the following information, Cp at 300K is 1.98 kJ/kgK, and Cp at 400K is 2.65 kJ/k..
Determine the specifications (unstretched length and springconstant k) for the elastic cord to be used at a bungee-jumpingfacility. Participants are to jump from a platform 150 ft above the ground. When they rebound, they must avoid an obstacle that ..
Assuming a drag coefficient Cd of 0.6 for the baffle blocks based on the upstream velocity and combined frontal area of the blocks, calculate the sequent depth required to form a jump with the blocks and compare this value to the sequent depth requir..
How does aggregate size influence the coefficient of permeability of concrete? List other factors that determine the permeability of concrete in a structure.
Find the magnitude and depth of the point of application of the force on the circular gate shown (circular gate at an angle of 60 deg.) if h(distance from top of gate to top of water)=5ft. and D(length of the gate)=4 ft.
A water contains a suspended solids concentration of 10.30 mg/L. Coagulation reduces this to 1.0 mg/L. To accomplish this, an alum dose of 13.30 mg/L is necessary. What is the dry weight of sludge produced in kg/day if the plant treats water at a rat..
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