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If a solar system delivers 2500 MJ/m2 ·year with a water flow rate of 30 kg/mc2 and a plate efficiency factor F′ = 0.93, how much energy will it deliver if the flow rate is doubled? Neglect the effect of flow rate on F′. The collector has a heat loss conductance of 4 W/m2°C.
If the coefficient of kinetic friction between the belt and a package is μk = 0.2, determine the time needed to bring the package to rest on the belt if the belt is moving in the same direction as the package with a speed v = 1 m> s.
A prototype water pump has an impeller diameter of 2 ft and is designed to pump 12 ft3/s at 750 rpm. If the model pump requires 0.082 hp to drive it, what horsepower is required for the prototype
a steel ring of mean diameter 250 mm has a square section 2.5 mm by 2.5 mm. it is split by a narrow radial saw cut. the
the ice cap at the north pole may be 1000 m think with a density of 920 kgm3. find the pressure at the bottom and the
If reduction of at most 10 dB in amplitude is allowed before an amplifier is required, calculate the distance between each two amplifiers on the line.
What general conclusions can you draw?
a storage tank in a refrigeration system has a volume of 0.0060 m3 and contains a two phase liquid-vapor mixture of
a steam turbine operates with 1.6 mpa and 350 degree c steam at its inlet and saturated vapor at 30 degree c at its
2. Often, the properties of multiphase alloys may be approximated by the relationship ferrite form? (b) How many kilograms of eutectoid ferrite E 1alloy2 = EaVa + EbVb (9.24) form?
Design intermediate web stiffeners if required Check whether load-bearing stiffeners are necessary at the supports - Calculate the design load w* that be safely carried by this beam.
Suppose a circuit is constructed from three D-type flip-flops, with
A hydraulic cylinder has a piston diameter of 2.2 inches, a fluid pressure of 1100 psi, a flow rate of 132 cubic inches per minute, and a stroke of 10.5 inches. Find the force and the velocity generated by the piston.
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