Question

In: Mechanical Engineering

An oil at 50C with properties similar to engine oil passes through a 30 cm diameter...

An oil at 50C with properties similar to engine oil passes through a 30 cm diameter pipe with an average velocity of 6 m/s. A 200 m long section of pipe passes under a frozen lake with waters at 0 C. The pipe has the same surface temperature as the lake water.

(a) Find the temperature of the oil as it leaves the lake. Neglect the thermal resistance of the pipematerial.

(b) At what rate is heat transferred from the oil?

Solutions

Expert Solution

samet mamat answered 2 years ago
Next > < Previous

Related Solutions

Engine oil at a hundred degrees Fahrenheit passes through 1/8 inch diameter tube at a volume...
Engine oil at a hundred degrees Fahrenheit passes through 1/8 inch diameter tube at a volume flow rate of 50ft3/m . If the surface temperature is 150 degrees F, what is the heat transfer rate Q.   Q = ?????? Btu/h. Assume a smooth surface and the tube length is 5 meters. From the book use p (density) = 54.24 lbm/ft3,, Specific heat = 0.4809 Btu/(lbm*R)    R=Rankin, Thermal conductivity = k= 0.08207 Btu/(h*ft*R)    u = 7.617 * 10 -2 lbm/ft*s,...
The 2.0-cm-diameter solenoid in the figure passes through the center of a 6.0-cm-diameter loop. The magnetic...
The 2.0-cm-diameter solenoid in the figure passes through the center of a 6.0-cm-diameter loop. The magnetic field inside the solenoid is 0.20 1. What is the magnetic flux through the loop when it is perpendicular to the solenoid? What is the magnetic flux through the loop when it is perpendicular to the solenoid? Express your answer using two significant figures. Magnetic Flux = ______ Wb 2. What is the magnetic flux through the loop when it is tilted at a...
A tube 12 cm in diameter is carrying engine oil a distance of 4 meters from...
A tube 12 cm in diameter is carrying engine oil a distance of 4 meters from barrel to outlet. If the pressure difference between the ends of the tube is 1064.28 atm , what is the oil flow rate?
An electric current passes through a metal strip 0.50 cm by 5.0 cm by 0.10 mm,...
An electric current passes through a metal strip 0.50 cm by 5.0 cm by 0.10 mm, heating it at a rate of 128 W. The strip has emissivity e=1 and its surroundings are at 306 K. What will be the strip’s temperature(K) if it’s enclosed in an insulating box with thermal R=12 K/W resistance that blocks all radiation?
An electric current passes through a metal strip 0.60 cm by 6.0 cm by 0.18 mm...
An electric current passes through a metal strip 0.60 cm by 6.0 cm by 0.18 mm , heating it at the rate of 52 W . The strip has emissivity e=1.0and its surroundings are at 250 K . What will be the temperature of the strip if it's enclosed in (a) a vacuum bottle transparent to all radiation and (b) an insulating box with thermal resistance R = 9.0 K/W that blocks all radiation? (A and B answers should be...
A 1.0-cm-diameter pipe widens to 2.0 cm, then narrows to 0.5 cm. Liquid flows through the...
A 1.0-cm-diameter pipe widens to 2.0 cm, then narrows to 0.5 cm. Liquid flows through the first segment at a speed of 9.0 m/s . What is the speed in the second segment? What is the speed in the third segment? What is the volume flow rate through the pipe? for the love of god please give me the right answer. everyone has given me the wrong answers so far and i'm pissed off.
A 1.0-cm-diameter pipe widens to 2.0 cm, then narrows to 0.5 cm. Liquid flows through the...
A 1.0-cm-diameter pipe widens to 2.0 cm, then narrows to 0.5 cm. Liquid flows through the first segment at a speed of 9.0 m/s . What is the speed in the second segment? What is the speed in the third segment? What is the volume flow rate through the pipe?
Air passes through a jet engine nozzle operating at steady state. The flow at the nozzle...
Air passes through a jet engine nozzle operating at steady state. The flow at the nozzle inlet has a temperature of 900° F. The nozzle inlet has an area of 5 ft2. The flow at the nozzle outlet has a temperature of 875° F, a specific volume of 90 ft3/lb, and a velocity of 600 ft/s. The nozzle outlet has an area of 2 ft2. Model the air as an ideal gas with constant specific heats. Evaluate the specific heats...
1) A four-stroke diesel engine has a piston diameter of 16.5 cm and a stroke of...
1) A four-stroke diesel engine has a piston diameter of 16.5 cm and a stroke of 27 cm. The compression ratio is 14.3, the cut-off 4.23% of the stroke and the mean effective pressure 4.12 bar. The engine speed is 264 rev/min and the fuel consumption is 1.076 kg of oil per hour, having a calorific value of 39150 kJ/kg. Calculate the relative efficiency of the engine 2). A diesel engine has a brake thermal efficiency of 30%. If the...
The structure of the figure is supported by the pin A of diameter d=3/4" and a cable that passes through the pulley of negligible diameter D.
The structure of the figure is supported by the pin A of diameter d=3/4" and a cable that passes through the pulley of negligible diameter D.pulley of negligible diameter D and whose assembly is shown in the figure. For the CE bar it was necessary to construct it by joining two sections of plate with a welded joint in the form of a thorn.herringbone welded joint, as shown in the detail. For this configuration, determinea. The minimum area of the...
ADVERTISEMENT
Subjects
ADVERTISEMENT
Latest Questions
ADVERTISEMENT