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A balanced-cross-flow compact heat exchanger is required for an air heating system that processes 0.5 kg/s air. The inlet temperature for the hot water is 295 K, and the cold air enters at 270 K to be heated to 287 K. The inlet pressure for the hot water is 986 mbar. Determine the dimensions of the heat exchanger with a pressure drop of 3300 Pa.
A rigid tank contains nitrogen gas with an absolute pressure of 113.1 kPa. A vacuum pressure gage connected to the tank reads -14.2 kPa-vacuum. What is the local atmospheric pressure (in kPa)?
carbon dioxide enters an adiabatic compressor at 100kpa and 300k at a rate of 0.5kgs and exits at 600kpa and 450k.
Evaluate the position and magnitude of the maximum bending moment.
air in a piston-cylinder device has 400 degrees f 1000 kpa with a volume of 3.5 ft3. combustion heats it to 1500 k in a
you are to expand a gas adiabatically from 300 psia 400 of to 10 psia in a closed system. which of the two choices -
If a single deposit of $25000 is invested at 1.75% yearly interest, what equal year-end withdrawals can be made each year for 10 years, leaving nothing in the fund after the 10th withdrawal? How much money was made in interest over the initial invest..
at a point on the free surface of an alloy steel e 30000 ksi and v . 3 machine part normal strains of 1000 uinin
one pound-mass of water at 600f expands against a piston in a cylinder until it reaches an ambient pressure of 14.7psi
a reversible heat engine receives heat from a heat source at 1000oc and has a thermal efficiency of 45. the heat engine
two large flat plates are separated by a thin glycerin layer that is 5 mm thick. a force is applied to the top plate
A 10-lb block has an initial velocity of 10 ft/s on a smooth, horizontal plane. A force, F = (2.5 t) lb, where t is in seconds, acts horizontally on the block in its direction of motion. Determine an expression for the distance, s in terms of time, t
a nozzle discharges a stream of water of cross-sectional area a with a velocity va. the stream is deected by a single
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