A 1.6 cm diameter insulated pipe carries a steady flow of water at a velocity of 18 m/s. The temperature increases from 220 K at the inlet to 221 K at the exit due to friction.30 me300 KPart AIf the specific entropy of water is related to its absolute temperature through s = 4.2 In T, determine the rate of generation of entropy within the pipe. Assume water density to be 1000 kg/m³Express your answer to three significant figures.vec?kWKSubmitRequest Answer

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Answered: A 1.6 cm diameter insulated pipe…

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

Problem 1.1MA

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A curious blacksmith forge 1 kg of iron then dropped it to an insulated container that contains 50 liters of water. Before dropping the iron into the insulated container, the blacksmith measures the temperature of iron and water as 500 °C and 20 °C, respectively. This curious blacksmith is always interested in thermodynamics and tries to calculate equilibrium temperature and the total entropy change because of his/her action. What will be the equilibrium temperature and the total entropy change? Is this process reversible or irreversible? (Density and specific heat of water at 20 °C are 995.10 kg/m3 and 4.16 kJ/kg.C, respectively. Assume that the specific heat capacity of iron is 0.5 kJ/kg.C)
In an experiment , a certain amount of air is heated at constant pressure from 1,7 cubic meters,20 degrees celsius and 97 KPa to 404 degrees celsius. It is then cooled at constant volume back to its initial temperature.Take specific heat at constant pressure and constant volume for air as 1,005 KJ/kg K and 0,717 KJ/kg K repectively. Calculate: 1. the change specific entropy in the cooling process in 1 decimal place and SI unit 2.the change specific entropy in the constant pressure process in 1 decimal place ans SI unit
A thermally well insulated, frictionless piston with initial volume V. contains 2.0 moles of an ideal gas. The temperature of the system at all time is T K. Then the piston is pulled until the volume of the gas is doubled. This expansion process is a reversible process. (a) Do the gas velocity distribution and internal energy of the gas change by the expansion? Justify your answer. (b) Determine the change in entropy of the gas.
Show the full answer. Steam at a temperature of 480°K has a specific entropy of 7.1167 kJ/kg-K. Determine the pressure, internal energy, enthalpy and volume.
Steam at a temperature of 250°C has specific volume of 0.15436 m^3/kg. What is the specific entropy in kJ/kg-K?
Q.3 A steel bar at a temperature of 500°C is dropped into an insulated bath containing 20 kg water at 120°C. The temperature of water and Steel reaches steadily to 150°C. If specific heat for water is 4 .180 kJ/kg-K, calculate the change in entropy of system.
The entropy (s) of steam at pressure P = 18 MPa and internal energy (u) = 1699.1 kJ/kg is approximately: O 5.1064 kJ/kg. K O 1.2343 kJ/kg. K O 3.8720 kJ/kg. K
Give the significance of volume coefficient. The volume coefficient of expansions of water at 373 K is 7.8 x 10-4 K-1. Calculate the change in entropy when the pressure is increased from 1 bar to 100 bar. At 373 K, density of water is 958 kg/m3 .
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SANAE |V, a research station of The South African National Antarctic Programme (SANAP), is located on Vesleskarvet, Queen Maud Land. On a given day, 29674 J of heat leaks out of a building. The inside temperature is 22.8 °C, and the outside temperature is -20.2 °C. What is the increase in the entropy of the universe that this heat loss produces?
Note: Use values from the Steam Tables by Keenan, Keyes, Hill and Moore.
Q8. A gas enter a turbine with a velocity of 300 m/s and a temperature of 527 °C and specific internal energy of 688 kJ/kg and density of 2.7 kg/m³ . The gas expand adiabatically from a pressure of 620 kN/m² to 130 kN/m² .The gas leaves the turbine with velocity of 150 m/s. Determine the power output from the turbine in kilowatt. Take the mass flow rate of 4 kg/s. 00 limite through ongine Qvel 300 °C ond 50 9C tho hoot roiootod tompooretur

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