Fluid Mechanics Fundamentals And Applications
3rd Edition
ISBN: 9780073380322
Author: Yunus Cengel, John Cimbala
Publisher: MCGRAW-HILL HIGHER EDUCATION
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Chapter 6, Problem 42P
Commercially available large wind turbines have blade span diameters larger than 100 m and generate over 3 MW of electric power at peak design conditions.
FIGURE P6−42
Consider a wind turbine with a 60-m blade span subjected to 30-km/h steady winds. If the combined turbine−generator efficiency of the wind turbine is 32 percent, determine (a) the power generated by the turbine and (b) the horizontal force exerted by the wind on the supporting mast of the turbine. Take the density of air to be 1.25 kg/m3, and disregard frictional effects on mast.
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A client is building a steam turbine power generation system that utilize a generator that requires a
minimum input power of 1200 kW to be supplied by an existing steam turbine in their inventory. As the
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The details of the steam turbine are as follow:
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steam is supplied to a fully loaded 100-hp turbine at 200 psia with u1 = 1163.3 btu/lb, v1 = 2.65 ft3/lb and v1 = 400 ft/s. exhaust is at 1 psia with u2 = 952 btu/lb, v2 = 294 ft3/lb and v2 = 1100 ft/s. the heat loss from the steam in the turbin is 10 btu/lb. neglect potential energy change and determine (a) the work per lb steam and (b) the steam flow rate in lb/h.
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Chapter 6 Solutions
Fluid Mechanics Fundamentals And Applications
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