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A heat pump will be used to heat a building during the winter and will then cool the same space during the summer. The rate of heat gain or loss is determined to be 2400 kJ per hour per each degree of temperature difference between the space and the outdoor temoerature. The interioe temperature will be 293 K during the winter, but will be kept at 298 K in the summer.
a) If the outside temperature is 0 deg C, what would be the minimum power to drive the compressor?
b) What would be the coefficient of performance?
c) Using the same power found in the part a above, what would be the maximum outdoor temperature during the summer for this system to operate and maintain the space at 298 K?
d) What would be the coefficient of performance in this mode?
the two bars shown in the figure are used to support a load p. when unloaded joint b has coordinates 0 0. after load p
Carbon fibre reinforced polymers (CFRP have been used extensively in aerospace applications due to their excellent strength to weight and stiffness to weight properties.
Two kilograms of Refrigerant134a, initially at 2 bar and occupying a volume of 0.12 m3, undergoes a process at constant pressure until the volume has doubled. Kinetic and potential energy effects are negligible. Determine the work and heat transfe..
You want to know if you should replace the existing machines, which has a Cpk of 1.0. You decide to determine the Cpk for the new machines and make a decision on that basis.
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distance per tank of gas a car with a 20-gallon gas tank averages 21.5 miles per gallon when driven in own and 26.8
ten grams of liquid water at 95 c are contained in the insulated container shown. the pin holding the frictionless
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using the compressibility chart determine the volume in m3 occupied by 20 kg of hydrogen h2 at 11.55 atm and -364 degf.
Construct the homogeneous solution in terms of four constant that could be determined from initial conditions and show the equations of motion
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