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A heat pump is under consideration for heating a research station located on an Antarctica ice shelf. The interior of the station is to be kept at 158C. Determine the maximum theoretical rate of heating provided by a heat pump, in kW per kW of power input, in each of two cases: The role of the cold reservoir is played by (a) the atmosphere at 2208C, (b) ocean water at 58C.
A heat engine draws equal amounts of energy from 3 different sources: one at 1000 K, one at 1500 K, and one at 2000 K. The engine rejects heat at a rate of 100 kW to the environment at 300 K. What is the maximum power that the engine can produce?
a smoke stream from a smoke generating tube is often used as a simple method of flow visualization in wind tunnels.
During the launch ,what is the magnitude of average external torque on her fromthe board?
a centrifugal fan is to be used to take a flue gas at rest zero velocity and at a temperature of 352.6 k and a pressure
a cast-iron bar 2 in. in diameter and 5 ft. long is surrounded by a shell of structural steel 0.25 in thick. compute
the surface of a steel machine member is subjected to the stresses of sigma1100 mpa sigma220 mpa sigma3-80 mpa. what
Identify a series of physical problems which lend themselves to being simplified to the use of a 2D solid element - Describe and discuss the differences of the 2D Solid Element types
an un-stretched spring initially is attached to a horizontal piston round shape. heat is added to the gas until the
consider an air-standard otto cycle. what is the efficiency of the otto cycle if the compression ratio is 10 and the
How much would it cost to deliver one kilo Watt-hour? How does this compare with the cost of energy from your local electric utility at $0.10 per kilo Watt-hour?
a household freezer operates in a room at 20ordmc. heat must be transferred from the cold space at a rate of 2 kw to
saturated liquid water is heated in a steady-flow steam boiler at a constant pressure of 800 psia. no shaft work is
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