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A counter flow, concentric tube heat exchanger used for engine cooling has been in service for an extended period of time. The heat transfer surface area of the exchanger is 5 m2, and the design value of the overall convection coefficient is 38 W/m2 · K. During a test run, engine oil flowing at 0.1 kg/s is cooled from 110°C to 66°C by water supplied at a temperature of 25°C and a flow rate of 0.2 kg/so Determine whether fouling has occurred during the service period. If so calculate the fouling factor, R''f (m2 · K/W).
High school Yr 12 aeronautical Engineering Module - mechanics, PLease help- i seem to get the incorrect answer but didn't know where i have gone wrong?
As shown in the diagram, two reversible cycles arranged in series both produce the same net work, W out. The first cycle receives energy QH by heat transfer from a hot reservoir at 1000 R and rejects energy Q by heat transfer to a reservoir at an int..
A flat plate maintained at a temperature of 50 C experiences a flow of atmospheric air at 15 C. If the temperature gradient at the plate's surface at a given downstream location is -43 C/mm, what is the local heat transfer coefficient?
a liquid food is being heated in a tubular heat exchanger. the inside pipe wall temperature is 110degc. the internal
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A mold has a downsprue of length = 6.0 in. The cross-sectional area at the bottom of the sprue is 0.45 in2. The sprue leads into a horizontal runner which feeds the mold cavity, whose volume = 75 in3. Determine (a) the velocity of the molten metal fl..
a piston cylinder device contains 2.5 kg of carbon dioxide co2 initially at 100 kpa and 300 degrees celsius.the co2 is
this isnt a specific problem but a question in general. when is it appropriate to use double integrals in solving for
for other properties fixed in a rakine cycle raising the condenser temperature causes what changes in the work and heat
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