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Water at 25°C is flowing in a buried irrigation ditch below ground. Every 100 feet there is a vent line 1.o inches in inside diameter and 1.0 foot long to the outside atmosphere at 25°C. There are 10 such vents in the 1,000 foot irrigation pipe. The outside air is assumed to be completely dry. Calculate the total evaporative loss of water from the irrigation pipe in lb mass/day. Assume that the partial pressure of water vapor at the surface of the water in the pipe is the vapor pressure, 23.76 mm Hg at 25°C. Use diffusivity of water through air from Table 6.2-1 (0.260*10^-4 m^2/s).
Determine the power generated by the turbine (in KW) operating in steady state at 5MPa, with specific enthalpy 3000kj/kg and velocity of 10m/s at the entrance and steam escaping at 0.07MPa, specific enthalpy 2000kj/kg at velocity of 90m/s p.
Person spining has his arms outward. The moment of inertia is 52kg*m^2 and ang. speed 3.80 revolutions/ second. if the persons arms are down. moment of inertia goes to 35kg*m^2. find the new angular speed
Two remediation options are being considered for a contaminated land area formerly used for industrial operations. Option 1 involves removing all of the contaminated soil over a two-year period at a cost of 2.2$ million per year
A wastewater treatment plant receives 15 mgd of flow, with solids concentration of 230 mg/L. How many pounds of solids enter the plant every year
A natural channel that is clean and irregular(n= 0.040) has a bottom width of 15 ft m, side slopes of 6:1 (H:V) and a bottom slope of 0.0002. Using Manning's equation, determine the normal depth in the channel for a discharge of 720 cfs.
Find a solid steel shaft to transmit 100 hp at a speed pf 1200 rpm, if the maximum shearing stress is not to exceed 7500 psi.
Engineers at the General Electric turbine division are trying to improve an existing adiabatic steam turbine that receives 100 kg/s superheated steam at 10 MPa and 800 oC and after expansion and producing power,
Determine a set of a rectangular beam design values b,d and As that will be needed to support a factored bending moment Mu= 450 Kip-ft. Use f'c= 4500 psi and fy= 40000 psi.
a vertical curve is formed when a rural highway passes under a bridge joining a -8 grade to the horizontal grade
Knowing that the tension in cable AD is 405, determine (a) the angle between cable AD and the boom AB, (b) the projection on AB of the force exerted by cable AD at point A.
what would be the estimated total annual dollar savings of a company with an annual direct labor payroll of 2,500,000 and a fixed overhead rate of 150 percent of direct labor , if the company initiated a methods and standards program
The longitudinal slope of the swale is to be 1.5% with side slopes of 5:1 (H:V). If the grassed swale has a Manning's n of 0.030 and a minimum infiltration rate of 200 mm/hr, determine the length of the swale required.
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