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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.
gaseous hydrogen at 10 bars and 27c is stored in a 100-mm-diameter spherical tank having a steel wall 2mm thick. the
An air standard Diesel cycle has a compression ratio of 15, and the heat transferred to the working fluid per cycle is 800 Btu/lbm. At the beginning of the compression process the pressure is 14.7 lb/in^2 and the temperature is 60 F. Determine the pr..
A manometer is used to measure the air pressure in a tank. The fluid used has a specific gravity of 1.25, and the differential height between the two arms of the manometer is 28 in. If the local atmospheric pressure is 12.7 psia, determine the abs..
Refrigerant 134a enters the compressor of an ideal vapor-compression refrigeration cycle as saturated vapor at 2108F. The condenser pressure is 160 lbf/in.2
Determine the failure load for the crack-free jaw. For the crack-free jaw, what would be the factor of safety based on stress/load. Which failure occurs first- the crack or the failure in the pins
a curved rectangular bar has a mean radius of 6 in and cross section width b2.5 in and depth h 1.5 in. 1. determine the
a refrigeration cycle having a coefficient of performance of 3.0 maintains a computer laboratory of 18oc on a day when
Shop order 7777 is for 600 of part 8900. From the routing file, it is found that operation 20 is done on work center 300. The setup time is 3.5 hours, and run time is 0.233 hours per piece. What is the required capacity on work center 300 for shop..
A generator is driven by a small, single-jet Pelton turbine designed to have a power specific speed Ωsp = 0.20. The effective head at nozzle inlet is 120 m and the nozzle velocity coefficient is 0.985.
ten kilograms of ice at 260 k is duped into 20 kg of liquid water initially at 300 k in an insulated container. the
An ideal single reheat cycle uses a turbine inlet conditions of 2500 psia and 1000F and a reheat temperature of 1000F with a reheat pressure ration of P2/P1 = 0.2 and a steam mass flow rate of Ms = 2*10^6 lbm/hr. The condenser operates at a pressure ..
Which method would you use in data acquisition for real-time control? Into which of the three categories would you put memory-mapped I/O?
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