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As strip steel leaves the last set of rollers in a hot rolling mill, it is quenched by planar water jets before being coiled. Due to the large plate temperatures, film boiling is achieved shortly downstream of the jet impingement region.
Consider conditions for which the strip steel beneath the vapor blanket is at a temperature of 907 K and has an emissivity of 0.35. Neglecting the effects of the strip and jet motions and assuming boiling within the film to be approximated by that associated with a large horizontal cylinder of 1-m diameter, estimate the rate of heat transfer per unit surface area from the strip to the wall jet.
why is the carnot cycle not suitable as an ideal cycle for all the power producing devices ?
a conical hole is machined in a metal whose emissivity is 0.5. the hole is 2.5 cm in diameter at the surface and 7.5 cm
an alluminum ball 0.5 cm in diameter initially at 250 c is dropped into a large tank of fluid with tsat100 c which is
Answer the following true or false. Explain. (a) The second Carnot corollary states that all power cycles operating between the same two thermal reservoirs have the same thermal efficiency.
a long beer can made of thin a1 sheet l 1 cm k 205 wmk is removed from refrigerator and set on a table air temp
determine the minimum mass in kg of a 24 in long tension member that must support a load of 1000 lbs manufactured from
a heat exchanger is constructed so that hot flue gases at 700k flow inside a 2.5 cm id copper tube with 1.6 mm wall
A six cylinder engine runs at 4000 RPM with a compression ratio of 8:1 and a total clearance volume (total for all 6 cylinders) of 600 mL at TDC. The engine intakes atmospheric air at 100 kPA & 20C. The maximum temperature during the cycle is 1500 C
What is the temperature of the methanol when it is mixed in a header on the outlet side? Make a judgement of the heat exchanger.
A cube of linear elastic material is subjected to a vertical compressive stress sigma1 in the 1-direction, but it is now constrained ( e = 0) in both the 2- and 3- directions. Find expressions for the induced transverse stresses, sigma2 and sigma3 in..
Consider the (eight) n = 2 states, 12 / m1 ms}. Find the energy of each state, under strong-field Zeeman splitting.
A 0.453-Kg mass attached to a light spring elongates it by 7.87mm. Determine the natural frequency of the system.
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