Please answer part ii only given that the answer to part i is-20 degrees 5kg of chilled fish at -3°C are rapidly frozen by immersion in a closed,insulated and rigid container with 2000 litres of nitrogen gas at -100°C.i) Determine the final temperature of the fish and gas, assume the nitrogencan be treated as an ideal gas and state any further assumptions made.ii) Calculate the amount of entropy produced given that Gibb's equatis enTds=du + Pdvwhere T and P are temperature and pressure respectively, and s, u and vare specific entropy, internal energy and volume respectively.Assume that the specific heat capacity of nitrogen and fish at constant volume are0.743 and 1.8 kJ/kgK respectively and the density of nitrogen at -100°C isapproximately 1.3 kg/m³.

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Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

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6. Five pounds of a certain ideal gas with K 1.30 and R= 35 is compressed in %3D polytropic process in a closed system from 15 psia, 80 F to 60psia, 315 F. Compute the polytropic index n, the work nonflow and the heat interactions with the surroundings
In a piston-cylinder assembly as in the figure, 0.1 m3 of saturated water at 800 kPa pressure 0.9 m3saturated water vapor is in equilibrium. The temperature in the cylinder rises to 350 oCHeat transfer occurs as much. Neglecting the frictional forces between the piston and cylinder:a) Considering the state change saturation curves, in ? - ? and ? - ? diagramsshow.b) Find the initial temperature of the water.c) Calculate the total mass of water.d) Calculate the volume in the final case.
2. 10kg of H₂O in a 1.5m³ tank is initially at 200°C heat loss causes a decrease in temperature to 150°C. find: a. Phase 1 and 2 b. Internal Energy at 1 and 2 c. Heat loss if this system is stationary d. Heat loss if the body moving at velocity of 5m/s and assuming the mass of the empty tank negligible. Tonk A contains 2-kg steam a
1. Kittel Ch3-1. Free energy of a two state system. (a) Find an expression for the free energy as a function of 7 of a system with two states, one at energy 0 and one at energy E. (b) From the free energy, find expressions for the energy and entropy of the system. The entropy is plotted in Figure 3.11.
2) Two glass bulbs, one on the left with a volume of 2 liters and the other on the right with avolume of 6 liters, are connected to one another by a thin tube that is initially closed by astopcock. The bulb on the left has 0.1 moles of ideal gas, and the bulb on the right isevacuated. The system is in thermal equilibrium with the surroundings at 300K. When thestopcock is opened, the gas flows out to fill both bulbs. Calculate A for this process. If wewere to insert a propeller to extract work as the gas flows from left to right, what is themaximum amount of work that we could possibly extract?
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1. a polytropic process of air from 150 psia, 300 "F, and 1 ft occurs to p, 20 psia in accordance with pV = C. Determine (a) t, and V,. (b) AU, AH and AS, (c) S pdv and - SVáp and . d) compute the heat from the polytropic specific heat and check by the equation q = AU +S pdV. (e) Find the non-flow work and (f) the steady flow work for AK = 0
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A conduit connects two receptacle of different size. A valve is used at eachend which can be opened or closed. The first receptacle contains 300 liters of air at 4,200 kPa, 82C. The second receptacle contains air at 75kPa, 9C. Calculate the volume of the second receptacle if after the valve was opened and the properties of the mixture were 2400kPa for the pressure, and 52C for the temperature.

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