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A longitudinal aluminum fin (k = 230 w/mk) is attached to a copper tube having an outside radius of 0.04m. The length of the fin is 0.080 m and the thickness is 3mm. The tube base is held at 450 K and the external surrounding air at 300 K has a convective coefficient of 25 w/m^2 K. Calculate the fin efficiency and the heat loss from the fin per 1.0 m of length.
air enters an adiabatic compressor at 20 degc and 100 kpa at a rate of 2 kgs and exits at 700 kpa. if the power input
consider an ideal gas-turbine cycle with two stages of compression and two stages of expansion. the pressure ratio
To determine the heat transfer characteristics of a cylinder under cross flow conditions when the cylinder is isolated.
the jmh company manufactures resistors with an ideal resistance value of 400 ohms. a sample of 2000 resistors were
calculate the hourly gas flow rate for the conditions given as followsreadings differential pressure 50-in water static
consider the annulus formed between a rod of radius r0 and a tube of radius r1. find the velocity profile for couette
steam at 1.4 mpa and 350 c enters an adiabatic turbine at a rate of 450 kgh. the turbine has an adiabatic efficiency of
at a surface cutting speed of 190 mmin the productive tool life was 60 minutes. at a surface cutting speed of 225 mmin
a disk-shaped flywheel of uniform density r outer radius r and thickness w rotates with an angular velocity v in rads.
at 100 lbfin2 saturated vapor h2o flows in a pipe. a valve is opened to vent a small amount to the atmosphere. assuming
a uniform rod ab of length 3m and mass 20kg is suspended with its end b against a vertical wall while its end a is
round your final answers to three decimal places. the liquid leaving the condenser of a 115000-btuh heat pump using
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