Electrical Energy: Center Temperature and Maximum Temperature of a Wall
Please see the attached file for the fully formatted problem(s). Find center temperature and maximum temperature in the wall. Given that in problem Radius of wire r = 0.001268m Length of wire L= 0.9m Average conductivity k = 22.5 W/m.K Resistance R = 0.126 ohms Current = 200A Wall temperature Twall = 422.1K
Center Temperature -- Electric Current Passed Through a Wire
Please see the attached file for the fully formatted problem(s). An electric current of 200 A is passed through a stainless steel wire having a radius of 0.001268 m. The length of the wire L is 0.91m and has a resistance of 0.126 ohms. The outer surface temperature Ts is held at 422.1 K. The average conductivity is k=22.5 W/m ...continues
Showing Equivalence of Two Flow Equations
Please see the attached file for the fully formatted problem. I am trying to show that the following two equations are equivalent: Re[(1/St)*(∂ω/∂t) – del x (u x ω)] + del x (del x ω) = 0 Re[(1/St)*(∂ω/∂t) + u • del ω] = Re ω • del u + del2 ω Where u is ...continues
A fluid is flowing one moving plate
A fluid is flowing between two flat plates where one of the plates is moving at a constant velocity of Vw in the same direction. Derive the velocity profile for fluid flow in the x-direction. Show that it is linear. Determine the momentum flux at the moving wall. Assumptions -lamina flow -incompressible -isothermal -stead ...continues
See attached file for full problem description.
Mass of air required for combustion of fuel
A COAL FIRED BOILER USES FUEL HAVING THE FOLLOWING ANALYSIS BY MASS: CARBON 81%, HYDROGEN 5%, OXYGEN 6 %, ASH 8%. A) DETERMINE THE MINIMUM MASS OF AIR NECESSARY FOR COMPLETE COMBUSTION OF 1 KG OF FUEL. B) IF 40% EXCESS AIR IS SUPPLIED, DETERMINE THE PERCENTAGE COMPOSITION OF THE DRY EXHAUST GASES BY MASS.
Volume of air required for combustion of a natural gas mixture
A NATURAL GAS HAS THE FOLLOWING ANALYSIS BY VOLUME: METHANE (CH4) 87%, HYDROGEN 5% AND NITROGEN 8%. DETERMINE: A) THE MINIMUM VOLUME OF AIR NECESSARY FOR THE COMPLETE COMBUSTION OF 1 m3 OF THE GAS. B) THE VOLUMETRIC ANALYSIS OF THE EXHAUST GASES IF 20% EXCESS AIR IS SUPPLIED.
