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A mixing chamber has two steady streams and one steady stream. The properties of the first stream is superheated steam at T1 = 400oF, h1 = 1,239 Btu/lbm and flow rate m1 = 20 lbm/h. The second stream is compressed liquid at T2 = 70oF, h2 = 38 Btu/lbm. If the rate of heat removal from the chamber is 15,000 Btu/h; i. Sketch and label the mixing chamber. ii. Estimate the flow rate of water required to make the outflow stream be a saturated liquid water at 212oF. Inflow. Specify the necessary assumptions.
Water from a lower reservoir (water surface elevation) 500 m is pumping to the upper reservoir (water surface elevation 600 m) through a 5000 m long straight pipe with 0.5 m diameter
A single source of BOD causes an oxygen sag curve with a minimum downstream DO equal to 6.0 mg/L. If the BOD of the waste is doubled (without increasing the waste flow rate),
Write the mass balance equation for an ideal 1D plug-flow stream under steady state conditions with a first-order decaying substance. Solve for the concentration as a function of the concentration x=0, the rate constant kd, longitudinal distance x..
A piston cylinder is filled with .85 kg of refrigerant-134a at -10 degrees Celsius. The piston moves freely, and has a mass of of 12 kg and a diameter of 25 cm. Heat is added to the closed system (the refrigerant) until the temperature rises to 15 de..
Two tests are taken from the compacted mixture and checked for density. Core 1 had a density of 150 pcf and an air void content of 6.5 %. Core 2 had a density of 151 pcf. What is the air void content of core 2
If you have 10 kips acting downward on a foundation and footing, 4 feet long, with uniformly distributed load acting up ward of 2.5 k/ft (soil) also 4 ft long. what are the reactions, shear forces, and bending moments at the tree critical points?
a body slides down a frictionless plane and during the third second after starting from rest if it travels 20.4m. what
A tensiometer is used to measure a compacted soil in the field that has a matric suction of 200 kPa under atmospheric conditions. The pore-water pressure measurement in the tensiometer reaches -99 kPa
If the systems will reduce insurance claims by $100,000 two years from now, how much should the company be willing to spend now, it is uses an interest rat of 12% per year
The degradation constant is 0.2 1/d. If the initial concentration is 100 mg/L, how many days are required for the concentration to reach 0.14 mg/L
A power plant situated 20 km directly upwind from a protected old-growth forest emits SO2 at a rate of 120 g s-1with an effective stack height of 100 m (uH= 2 m s-1). Environmentalists claim that the acidic deposition is damaging the valuable fore..
A Chicago-based international air carrier plans to purchase a jumbo-class aircraft (Airbus A-340-600 or B777-200IGW) to serve the Chicago-London city pair
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