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The hot-water needs of a household are to be met by heating water at 55°F to 180°F by a parabolic solar collector at a rate of 4 lbm/s. Water flows through a 1.25-in-diameter thin aluminum tube whose outer surface is black-anodized in order to maximize its solar absorption ability. The centerline of the tube coincides with the focal line of the collector, and a glass sleeve is placed outside the tube to minimize the heat losses. If solar energy is transferred to water at a net rate of 400 Btu/h per ft length of the tube, determine the required length of the parabolic collector to meet the hot-water requirements of this house.
measure the velocity of air. If the deflection deflection (the vertical distance between the fluid levels in the two arms) is 7.3 cm, determine the air velocity. Take the density of air to be 1.25 kg/m3.
you are designing an ex vivo artificial organ. the cells in the organ cannot tolerate shear stress in excess of 0.5 gcm
carbon dioxide co2 modelled as an ideal gas flows through the compressor and heat exchangernbspshown in figure. the
In a lecture demonstration, a professor pulls apart two hemispherical steel shells (diameter D) with ease using their attached handles. She then places them together, pumps out the air to an absolute pressure of p, and hands them to a bodybuilder ..
Consider a mass going through a polytropic process where pressure is directly proportional to volume (n=-1) the process starts with P=0,V=0 and ends with P=600kPa,V=0.01m^3. Find the boundary work done by the mass.
a blower handles 1 kgsec of air at 20 deg c and consumes a power of 15 kw. the inlet and outlet velocities of air are
water is the working fluid in an ideal regenerative rankine cycle with one open feedwaer heater. superheated vapor
what are the actual and design parameter of two stroke petrol engine?
the vessel shown is formed by bending a plate to nearly a complete circle and then riveting a second plate to close it.
air at a velocity of 35. 2 ft sec and a pressure of 793. 1 nun hg flows in a long circular pipe whose inside diameter
estimate the cost an oil change 5 quarts of oil and new oil filter for your automobile at a local service station.it
an alcohol manufacturing facility emits air with 500 ppm ethanol. the air flows out several roof vents at a total flow
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