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Draw schematics of (a) heat engine and (b) refrigeration devices. Label the reservoirs, the type of energy transfer, and the direction of energy transfer. (c) How are these two schematic similar and how are they different? (d) How would a heat pump schematic differ from the refrigeration schematic?
An iceberg with specific gravity (SGice) of 0.92 is partially submerged in seawater whose specific gravity is SGw= 1.025. Determine the relative volume of the iceberg that appears above the surface of the sea.
An air conditioner in the airport of Timbuktu runs a cooling system using R-410a with a high pressure of 1500 kPa and a low pressure of 200 kPa. It should cool the desert air at 45 degrees C down to 15 degrees C. Find the cycle COP. Will the syste..
A balloon behaves so the pressure is P = C2V1/3, C2 = 100 kPa/m. The balloon is blown up with air from a starting volume of 1 m3 to a volume of 3 m3. Find the final mass of air assuming it is at 25oC and the work done by the air.
three resistors connected in series have resistance values in the ratio 11.53.3 and combine to an equivalent resistance
an old-style wooden irrigation gate is opened by pulling on a steel cable that connects to the bottom of the gate. how
Air enters an adiabatic duct of L/D = 40 at V1 = 170 m/s and T1 = 300 K. The flow at the exit is choked. What is the average friction factor in the duct?
a tube with elastic modulus of 75 gpa is used to support a compressive load. it is required that this tube must not
air flows parallel to an isothermal 100c flat plate with a free stream velocity of 10ms and free stream temperature of
there is a bar leaning on a perfect half cylinder with radius r. the end of the bar touching the ground is pulled with
water is to be pumped from a dam to a storage tank 20 m above at a rate of 70 ls. the electric power needed to achieve
an adiabatic gas turbine expands air at 3447 kpa and 427degc to 415 kpa and 120degc. if the volume flow rate at the
Calculate the minimal round-trip time delay for a radio communications link between Los Angeles and the satellite.
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