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Refrigerant 134a enters the condenser of a residential heat pump at 800 kPa and 35 degrees celcius at a rate of 0.018 kg/s and leaves at 800 kPa as a saturated liquid. If the compressor consumes 1.2 kW of power, determine a) the COP of the heat pump and
b) the rate of heat absorption for the outside air.
Martin pays rent of $500 per month for the 9-month acedemic year, he is going to travel the world this summer and won't be working. how much must he set aside in his savings account for the 3-month summer to cover his rent for the next year
Set up a table showing curve elevations at the PVC, at the PVT, and at the half-station points along the curve. Compute the station and elevation of the curve turning point.
What is the velocity of the blocks 5.00 after the blocks have started moving. Assume that the rope joining the two blocks in long enough so that, at this time, block A is on the frictionless surface while block B is still on the rough surface.
Let the cross - sectional area of the tube be given by A and the position of the cylinder by s , and assume that the compressed gas is an ideal gas at constant temperature so that the pressure P times the volume is a constant
An elevator weigh 4000kg. When the upward tension in the supporting cable is 48000N what is the upward acceleration Starting from rest, how far does it rise in 3s
The dry density of a compacted sand is 1.87 Mg/m^3 and the density of the solids is 2.67 Mg/m^3. What is the water content of the material when saturated. Include a phase diagram.
Calculate the required compressive strength for a concrete mix design if F'c = 5000 psi and data indicate a standard deviation of 600 psi based on 15 tests for a similar concrete mix
Head loss and sunshine striking a pipeline cause the temperature of the water flowing inside to rise by 2 degrees Celsius between two measuring points. Find the heat gain in J/N and cal/N.
The 2 Mg car is being towed by a winch. If the winch exerts a force of T=105s on the cable, where 14m is the displacement of the car in meters, determine the speed of the car when s , starting from rest. Neglect rolling resistance of the car.
A rectangular column of size 16” x 16” is to be designed for the following loads. Service D.L = 150 kips ft, Service LL = 200 kips-ft. DL Moment = 80 ft- kips, LL Moment =130 ft kips. Find the required column reinforcement.
The road is in good, dry conditions until 160 ft before the stalled car where it is wet and stays wet for the remaining length. What is the minimum distance from the stalled car at which the driver could apply the brakes and still stop before hitt..
The plus sight and minus sight distances were kept approximately equal. Readings (in feet) listed in the order taken are 5.06 (+s) on BM tree, 8.99 (-s) and 7.33 (+s) on TPI, 2.52 (-s) and 4.85 (+s) on BM X, 3.61(-s) and 5.52 (+s) on TP2, and 7.60..
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