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Engine oil is to be cooled down from 95C to 75C to be used as a lubricant; it has a constant flow rate of 500 kg/hr. Water at 25 C is to be used as the coolant. For economical pumping, the water velocity must be kept less than 2 m/s and the oil velocity to 1 m/s. Develop a double pipe heat exchanger, specifying velocities, mass flowrates, length and inlet and outlet temperatures. Also calculate the pressure drop for each fluid. Use schedule-40 wrought steel pipe in standard dimensions for both the inner and outer pipes. Use hydraulic diameter to analyze the annular flow.
an iron ball is thrown into the atlantic ocean. density of iron is 7856 kgm3. density of salt water is 1020 kgm3.
Show the principle stresses on the neutral axis on a correctly oriented element relative to the axis of the beam.
determine the thermal efficiency and the required steam flow rate kgs for a reheat-regenerative steam power plant which
1. determine the solar elevation at solar noon for winer solstice equinox and summer solstice for elevations 30 40 and
the portion of a race track between points a corresponding to x0 and b is part of a parabolic curve described by the
air at a temperature of -7c and 1 atm pressure flows along a flat surface an idealized airfoil at a constant velocity
A luge and its rider, with a total mass of 98 kg, emerge from a downhill track onto a horizontal straight track with an initial speed of 39 m/s.
the 580-ton tug is towing the 1200-ton coal barge at a steady speed of 6 knots. for a short period of time the stern
Weld analysis, Two steel plates are joined with a butt weld using a weld throat h of 3/8 in. and the length of weld 1 of 4in.
a drilling operation is required to machine 82.0 in. diameter holes on a 20 in. diameter bolt cirile workpiece
a pinroller supports resist . rotation displacement rotation and displacement none of the aboveb inflection points
a heat engine operates in a carnot cycle between72.0degc and345degc. it absorbs21600j of energy per cycle from the hot
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