Engineering, 02.12.2019 22:20 rossy84

# The pressure drop, δp, over a certain length of horizontal pipe is assumed to be a function of the velocity, v, of the fluid in the pipe, the pipe diameter, d, and the fluid density and viscosity, rho and μ. this flow can be described in dimensionless form as a "pressure coefficient," cp = δp/(0.5rhov2) that depends on the reynolds number, re = rhovd/μ. (a) the following data were obtained in an experiment involving a fluid with rho = 2 slugs/ft3, μ = 2 × 10- 3 lb · s/ft2, and d = 0.1 ft. use a power law equation to determine the functional relationship between the pressure coefficient and the reynolds number. (b) what are the limitations on the applicability of your equation obtained in part (a)? select the correct answer. v, ft/s δp, lb/ft2 3 192 11 704 17 1088 20 1280

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Amass of m 1.5 kg of steam is contained in a closed rigid container. initially the pressure and temperature of the steam are: p 1.5 mpa and t 240°c (superheated state), respectively. then the temperature drops to t2= 100°c as the result of heat transfer to the surroundings. determine: a) quality of the steam at the end of the process, b) heat transfer with the surroundings. for: p1.5 mpa and t 240°c: enthalpy of superheated vapour is 2900 kj/kg, specific volume of superheated vapour is 0. 1483 m/kg, while for t 100°c: enthalpy of saturated liquid water is 419kj/kg, specific volume of saturated liquid water is 0.001043m/kg, enthalpy of saturated vapour is 2676 kj/kg, specific volume of saturated vapour is 1.672 m/kg and pressure is 0.1 mpa.

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The pressure drop, δp, over a certain length of horizontal pipe is assumed to be a function of the v...

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