EBK ENGINEERING MECHANICS
15th Edition
ISBN: 9780137569830
Author: HIBBELER
Publisher: VST
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Chapter 22, Problem 76P
To determine
The differential equation of motion for the damped vibratory system and the type of motion.
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Combustion gases from the exhaust of a boiler that come out at 300 °C and 1 atm, are usedto preheat to preheat water in an industrial facility by passing them through a benchof tubes, within which there is a mass flow of liquid water of 6 kg/s. TemperatureThe average wall surface of all pipes is 80°C. Gases enter the bank ofPerpendicular shaped tubes with a velocity of 4.5 m/s. The outer diameter of the tubes isof 2.1 cm, which are arranged in a manner aligned with longitudinal and transverse steps ofSL = ST = 8 cm. There are 16 columns in the direction of flow with eight tubes in each.Whereas exhaust gases have properties very similar to atmospheric air,Calculate the following:a) The average coefficient of heat transfer by convection, in [W/m2K]. (b) The amount of heat transferred per unit length of the tubes, in [W/m] c) The pressure drop through the tube bank, in [kPa]
During a visit to a plastic sheet factory, it is observed that a section of 45 mlength of a steam pipe, with a nominal diameter of 2 inches (6.03 cm in diameter)Outdoor plant) extends from one end of the plant to the other without any insulation. TheTemperature measurements at various points on the tube surface gave an average value170 °C, while the surrounding air temperature is 20 °C. The outer surfaceof the pipe is oxidized and its emissivity is 0.7 on average with a temperature of thearound 22 °C. Calculate the following:(a) The coefficient of convective heat transfer for the air surrounding the pipe.b) The amount of heat lost by convection and radiationc) The amount of energy that is lost in a full day, assuming conditions ofconstant temperature.
Chapter 22 Solutions
EBK ENGINEERING MECHANICS
Ch. 22 - A spring is stretched 175 mm by an 8-kg block. If...Ch. 22 - A spring has a stiffness of 800 N/m. If a 2-kg...Ch. 22 - Prob. 3PCh. 22 - Prob. 4PCh. 22 - Prob. 5PCh. 22 - Prob. 6PCh. 22 - Prob. 7PCh. 22 - Prob. 8PCh. 22 - A 3-kg block is suspended from a spring having a...Ch. 22 - Prob. 10P
Ch. 22 - Prob. 13PCh. 22 - Prob. 14PCh. 22 - Prob. 16PCh. 22 - Prob. 17PCh. 22 - A uniform board is supported on two wheels which...Ch. 22 - Prob. 24PCh. 22 - Prob. 30PCh. 22 - Prob. 31PCh. 22 - Prob. 32PCh. 22 - Determine the differential equation of motion of...Ch. 22 - Prob. 36PCh. 22 - If the block-and-spring model is subjected to the...Ch. 22 - A block which has a mass m is suspended from a...Ch. 22 - A 4-lb weight is attached to a spring having a...Ch. 22 - A 4-kg block is suspended from a spring that has a...Ch. 22 - A 5-kg block is suspended from a spring having a...Ch. 22 - Prob. 48PCh. 22 - The light elastic rod supports a 4-kg sphere. When...Ch. 22 - Find the differential equation for small...Ch. 22 - Prob. 52PCh. 22 - The fan has a mass of 25 kg and is fixed to the...Ch. 22 - In Prob. 22-53 , determine the amplitude of...Ch. 22 - Prob. 55PCh. 22 - Prob. 56PCh. 22 - Prob. 57PCh. 22 - Prob. 58PCh. 22 - Prob. 59PCh. 22 - Prob. 60PCh. 22 - Prob. 61PCh. 22 - Prob. 62PCh. 22 - Prob. 65PCh. 22 - Determine the magnification factor of the block,...Ch. 22 - Prob. 67PCh. 22 - The 200-lb electric motor is fastened to the...Ch. 22 - Prob. 70PCh. 22 - Prob. 72PCh. 22 - Prob. 73PCh. 22 - Prob. 74PCh. 22 - Prob. 75PCh. 22 - Prob. 76PCh. 22 - Prob. 79P
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