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A particular internal combustion engine has an exhaust manifold at 600?C running parallel to a water cooling line at 20?C.
If both the manifold and the cooling line are 4 cm in diameter, their centers are 7 cm apart, and both are approximately black, how much heat will be transferred to the cooling line by radiation? [383 W/m].
a steel bearing is known to have a true diameter of 0.4982 in. in the laboratory you use a micrometer that is supposed
SAE-30 oil at 80-C occupies the space between two cylinders, 2 and 2.2 cm in diameter. The outer cylinder is stationary and the inner cylinder rotates at 100 rpm. Is the oil in a laminar or turbulent state if Recrit ¼ 1700? Use Re ¼ or1d=n, where ..
What is the kinetic energy (in Btu) associated with a 300 gm hockey puck flying at 120 mph? Assuming an ideal gas, calculate the specific volume in the appropriate units for: Calculate the specific enthalpy change (in the appropriate units) for the f..
1kg of a gas in a piston-cylinder assembly undergoes a Carnot power cycle for which the isothermal expansion occurs at 800 K. The change in specific entropy of the gas during the isothermal compression, which occurs at 400 K is -25 kJ/kg. K.
H2O is used by a turbine operating at steady state with a mass flow rate of 4 lbm/s. The water at the inlet is 140 PSI and 1000oF and at the outlet it is 2 psi. Knowing the power developed is 1,600 Btu/s, what is the isentropic efficiency?
a spherical balloon contains 2 kg of water at 230 degrees c 400 kpa the specific volume is 0.5951 m3kg. the balloon
Sketch the equivalent thermal circuit of the system and express all resistances in terms of relevant variables. Obtain an expression that may be used to determine the heater temperature, Th'
If the fluid around the sphere is quiescent and extensive, show that the conduction limit of heat transfer from the sphere can be expressed as NuD, cond = 2.
two resistors r1 120.0 ohms and r2 200.0 ohms are connected in parallel to each other then in series to a 12.0 volt
a heat engine receives 1 kw heat transfer at 1000 k and gives out 600 w as work with the rest as heat transfer to the
Determine the least area of a cross section of an ASTM-a36 steel bar required to support a tensile load of 100,000 lbs. the allowable unit stress is 36,000 psi. (Ans. nearest 100th of an inch squared)
a heat exchanger is to be designed to condense 1100 kghr of steam ay 150 kpa. for this purpose cooling water at 50
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