Chapter 6 9. The figure shows data for a portion of the ducting in a ventilation system operating at steady state. The ducts are well insulated andthe pressure is very nearly 1 atm throughout. The volumetric flow rate entering at state 2 is AV₂ = 3600 ft³/min. Assume the ideal gasmodel for air with cp = 0.24 Btu/lb-ºR and ignore kinetic and potential energy effects.Step 1(AV)1= 5000 ft³/minT₁=80°FT3 = i2(AV) ₂T₂ = 40°FDetermine the temperature of the air at the exit, in °F.°Fft³/minDetermine the temperature of the air at the exit, in °F, and the rate of entropy production within the ducts, in Btu/min-°R.Air, Cp=0.24 Btu/lbᵒRp= 1 atm-Insulation3 V₂=400 ft/minT3 = ?

Steady flow energy equation:- Steady flow energy equation describes the total energy flow of an open…

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Determine the temperature of the air at the exit, in °F, and the rate of entropy production within the ducts, in Btu/min.°R.

Elements Of Electromagnetics

7th Edition

ISBN:9780190698614

Author:Sadiku, Matthew N. O.

Publisher:Sadiku, Matthew N. O.

ChapterMA: Math Assessment

Section: Chapter Questions

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The figure shows data for a portion of the ducting in a ventilation system operating at steady state. The ducts are well insulated and the pressure is very nearly 1 atm throughout. The volumetric flow rate entering at state 2 is AV₂ = 3600 ft3/min. Assume the ideal gas model for air with cp = 0.24 Btu/lb-ºR and ignore kinetic and potential energy effects. (AV)₁ = 5000 ft³/min Air, Cp=0.24 Btu/lb R T₁ = 80°F p=1 atm 2 (AV)₂ T₂ = 40°F ft³/min 3 V3 = 400 ft/min T3 = ? -Insulation Determine the temperature of the air at the exit, in °F, and the rate of entropy production within the ducts, in Btu/min.°R.
The figure shows data for a portion of the ducting in a ventilation system operating at steady state. The ducts are well insulated and the pressure is very nearly 1 atm throughout. The volumetric flow rate entering at state 2 is AV₂ = 3600 ft3/min. Assume the ideal gas model for air with cp = 0.24 Btu/lb-ºR and ignore kinetic and potential energy effects. 1 (AV)₁ = 5000 ft³/min T₁ = 80°F 2 (AV) ₂ T₂ = 40°F ft³/min Air, Cp=0.24 Btu/lbºR p=1 atm Insulation 3 V3400 ft/min T3 = ? Determine the temperature of the air at the exit, in °F, and the rate of entropy production within the ducts, in Btu/min.°R.
The figure shows data for a portion of the ducting in a ventilation system operating at steady state. The ducts are well insulated and the pressure is very nearly 1 atm throughout. The volumetric flow rate entering at state 2 is AV2 = 2000 ft/min. Assume the ideal gas model for air with c, = 0.24 Btu/I6•°R and ignore kinetic and potential energy effects. (AV)1 = 5000 ft³/min Air, Cp = 0.24 Btu/lb°R 1 T = 80°F p=1 atm 3 V3 = 400 ft/min T3 = ? Insulation ft/min (AV)2 T2 = 40°F Determine the temperature of the air at the exit, in °F, and the rate of entropy production within the ducts, in Btu/min-°R.
The figure shows data for a portion of the ducting in a ventilation system operating at steady state. The ducts are well insulated and the pressure is very nearly 1 atm throughout. The volumetric flow rate entering at state 2 is AV2 = 2000 ft3/min. Assume the ideal gas model for air with c, = 0.24 Btu/lb-°R and ignore kinetic and potential energy effects. (AV)1 = 5000 ft/min 1 Air, Cp = 0.24 Btu/lb°R T = 80°F p=1 atm 3 V3 = 400 ft/min T3 = ? Insulation ft/min (AV)2 Tz = 40°F Determine the temperature of the air at the exit, in °F, and the rate of entropy production within the ducts, in Btu/min.°R.
The figure shows data for a portion of the ducting in a ventilation system operating at steady state. The ducts are well insulated and the pressure is very nearly 1 atm throughout. The volumetric flow rate entering at state 2 is AV2 = 4000 ft3/min. Assume the ideal gas model for air with cp = 0.24 Btu/lb·oR and ignore kinetic and potential energy effects. Determine the temperature of the air at the exit, in oF, and the rate of entropy production within the ducts, in Btu/min·oR.
For a certain gas with constant, R = 320 J/(kg-K) and constant volume specific heat, Cv = 184 J/(kg-K), what is the value of constant pressure specific heat, Cp if the system undergoes a reversible non flow constant pressure
1. Where necessary, assume air as an ideal gas and consider R = 287 J/(kg.K), Cp = 1005 J/(kg.K), v = 718 J/(kg K)- a) A nozzle is a device that is used to increase the velocity of a fluid by varying the cross-sectional area. At the last section of a jet engine (Fig Q1.a, section 5), air with a mass flow rate of 50 kg/s at a pressure of 500 kPa and a temperature of 600 K enters a nozzle with an inlet cross-sectional area of 5 m2 The exit area of the nozzle is 20% of its inlet area. The air leaves the nozzle at a velocity of 300 m/s. The nozzle is not well-insulated and during this process, 5 kl/kg heat is lost. 2 Compre 1 Conttnhanbe Figure Q1.a: Schematic of a Jet engine. (i) In analysing this nozzle using the 1st law of thermodynamics, the change in which type of energy is negligible? (ii) Determine the density and velocity of the air entering the nozzle. (ii) Calculate the density of the air as it leaves the nozzle. (iv) Determine the temperature of the air as it leaves the nozzle.…
3. Ten Ibm of an ideal gas is compressed in a piston-cylinder arrangement to 1/10 of its initial volume. The ideal gas has a molecular mass (M) of 25 and the ideal gas heat capacity is given by C, = 0.4 + 0.3 x 103 T-0.2 x 106 T² Btu/(lbm °R) where Tis in Rankine. If the initial state 1 is 5 psi and 80° F and the process is polytropic with n=1,3, what is the final (state 2) pressure in psi (8%), the final temperature in °R (8%), the work done in Btu (10%), and the internal energy change (rigorous integration of C. from Tj to T2 is required) (12%), and the heat transfer in Btu (2%) for the process? 人3 13. 1.3 3-R+V B20x (4) 20x0"- 1.3 = 399.1 Psi it
The pressure of the air in a starting vessel is 40 bar and the temperature is 24°C. If a fire in the vicinity causes the temperature to rise to 65 °C. Neglect anyincrease in the volume of the vessel which is 5 liters. Please answer the following a. The thermodynamic process the problem representsb. the pressure, temperature, and volume after the processc. change in internal energy, change in enthalpy and change in entropyd. work nonflow and heat transferred
Show the details of your solutions with dimension analysis! 5. In a central air-conditioning system, 72 kg per hour of air at 15 0 C and1.1 bar enters a rectangular duct of 200mm x 500mm, determine the airvelocity at this section.
Air occupies a 0.5-m' tank. It starts at a pressure of 5 bar and a temperature of 300 K. Energy flows into the tank via heat transfer until the temperature reaches 400 K. This happens at constant pressure, which is possible because there is a pressure-relief valve that lets air leave the tank to keep the pressure constant. Neglect kinetic and potential energy effects, and use the ideal gas model with constant specific heats evaluated at 350 K. 4. Determine the mass of air that escapes, in kg. Determine the amount of energy transfer by heat, in kJ. a. b. Hint: use Ucv = mu; he u+ RT, and cv+ R= Cp.
Initially contains Air: P1 = 30 lbf/in^2 T1 = 540 °F V1 = 4 ft^3 Second phase of process involving Air to a final state: P2 = 20 lbf/in^2 V2 = 4.5 ft^3 Wheel transfers energy TO the air by WORK at 1 Btu. Energy transfers TO the air by HEAT at 12 Btu. Ideal Gas Behavior. Is the PE and KE neglected? Wpw =-1 Btu Ima Q = -12 Btu Air Wpist = ? Initially, p₁ = 30 lbf/in.², T₁ = 540°F, V₁ = 4 ft³. Finally, p2 = 20 lbf/in.², V₂ = 4.5 ft³.