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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 coil spring is stretched by two equal and opposite forces f120n. the wire diameter is 5 mm and the mean coil diameter
a cam is to be disinged for an automated part loader1 rise 50mm in 1.5 sec usisng the constant velocity motin scheme.2
1 air in a piston-cylinder assembly and modeled as an ideal gas undergoes two internally reversible processes in series
consider an ideal combined cycle with compression ratio of 71 in which air enters the compressor at 295 k enters the
on a hot summer day a student turns his fan on when he leaves his room in the morning. when he returns in the evening
steam enters an adiabatic turbine at 400c and 2mpa pressure. the turbine has an isentropic efficiency of 0.9. the exit
two uninsulated rigid tanks contain air. initially tank a hold 1 lbm of air at 1440 degrees r and tank b has 2 lbm of
a fan drawing electricity at a rate of 1.5 kw is located within a rigid enclosure measuring 3m x 4m x 5m. the enclosure
the diffusion coefficients for carbon in nickel are 5.5 x 10-14 m2s at 600 degc and 3.9 x 10-13 m2s at 700 degc
The velocity of a particle along the s-axis is given by v = 17s^3/2 where s is in millimetres and v is in millimetres per second. Determine the acceleration when s is 3.3 millimetres.
a nozzle discharges a stream of water of cross-sectional area a with a velocity va. the stream is deected by a single
a force is described as 150 lb acting through the origin of a two dimensional coordinate system up at an angle 135ordm
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