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5000 kg/hr of water will be heated from 20o C to35o C by hot water at 140oC A 15o C hot water temperature drop isallowed. A number of double-pipe heat exchangers with annuli and pipes, each connected in series, will be used. Hot water flows through the inner tube. The thermal conductivity of the material is 50 W/m * K Fouling factors: Ri = 0.000176 m2 * K/W Ro= 0.000352 m2 * K/W Inner tube diameters: ID = 0.0525m, OD = 0.0603m Annulus diameters: ID = 0.0779m, OD = 0.0889m. The heat transfer coefficients in the inner tube and in the annulus are 4620 W/m2 * K and 1600 W/m2 * K respectively. Calculate the overall heat transfer coefficient and the surface area of the heat exchanger.
the drag on a 2-m-diameter satellite dish due to an 80-kmhr wind is to be determined through a wind tunnel test using a
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modified brayton cycle is to be analyzed using the air-standard assumption with constant specific heats at a
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a wind turbine with a 90m-diameter rotor is rotating at 30 rpm under steady winds at an average velocity of 25 kmh.
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suppose that the minimum and maximum ages for typical textbooks currently used in college courses are 2 and 8 years.
The total hot water flow rate is 10 gal/min which is equally divided among 16 plates. The average temperature of hot water is 80C. Calculate the pressure drop.
Komodo dragons are the largest lizards known to man. A 250-pound dragon can eat enough food to increase it body weight by 1/2. Which number sentence could be used to find w, the weight of a k0modo dragon after increasing it body weight by 1/2?
a gas station uses a 0.05 m3 tank to store air at 800 kpa absolute and 15c. the tank is equipped with a valve through
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