Refrigerant 134a enters an insulated diffuser as a saturated vapor at 120°F with a velocity of 1200 ft/s. The inlet area is 1.4 in?. At theexit, the pressure is 400 Ibf/in? and the velocity is negligible. The diffuser operates at steady state and potential energy effects can beneglected.Determine the mass flow rate, in Ib/s, and the exit temperature, in °F.

Given Data Refrigerant R-134a Inlet:120°F, saturated vapor, 1200 ft/s, 1.4 in2 Outlet:400 psi…

Answered: Refrigerant 134a enters an insulated…

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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6. Air whose density is 0.078 Ib/ft^3 enters the duct of an air-conditioning system at a volume flow rate of 450 CFM. If the diameter of the duct is 10 in, determine the mass flow rate of air in Ib/min.
Refrigerant 134a enters a well-insulated nozzle at 200 lbf/in.2, 140°F, with a velocity of 120 ft/s and exits at 10 lbf/in.² with a velocity of 1500 ft/s. For steady-state operation, and neglecting potential energy effects, determine the temperature, in °F, and the quality of the refrigerant at the exit. T2 = x2 = i i °F %
Refrigerant 134a enters a well-insulated nozzle at 200 lbf/in.?, 170°F, with a velocity of 120 ft/s and exits at 50 lbf/in.? with a velocity of 1500 ft/s. For steady-state operation, and neglecting potential energy effects, determine the temperature, in °F, and the quality of the refrigerant at the exit. T2 = i °F X2 = i
Hot combustion gases, modeled as air behaving as an ideal gas, enter a turbine at 145 lbf/in.?, 2700°R with a mass flow rate of 1.02 lb/s and exit at 29 Ibf/in.? and 1620°R. If heat transfer from the turbine to its surroundings occurs at a rate of 64.91 Btu/s, determine the power output of the turbine, in hp. Wev i hp
In an air conditioning system running at steady-state, m ̇ = 0.7 kg/s of refrigerant 3 134a in saturated liquid state at 48◦C flow through a throttling valve reducing its pressure to a value of p4 = 4 bars. The system is shown in Fig. 1. Then the refrigerant flows through the internal side of a heat exchanger exiting at saturated vapor with p5 = p4. Air enters the external side of the heat exchanger at T1 = 300 K and exits at T2 = 295 K moved by a fan ̇ Figure 1: Problem 1 that consumes WCV = 0.15 kW. Determine the mass flow rate of the air, in kg/s
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Refrigerant 134a enters a well-insulated nozzle at 200 lbf/in.2, 170°F, with a velocity of 120 ft/s and exits at 50 lbf/in.² with a velocity of 1500 ft/s. For steady-state operation, and neglecting potential energy effects, determine the temperature, in °F, and the quality of the refrigerant at the exit. T₂= x2 = i i °F %
Refrigerant 134a enters a well-insulated nozzle at 200 lbf/in.2, 140°F, with a velocity of 120 ft/s and exits at 10 lbf/in.² with a velocity of 1500 ft/s. For steady-state operation, and neglecting potential energy effects, determine the temperature, in °F, and the quality of the refrigerant at the exit. T₂ = i 29.615 x2 = 78.516 % °F
Refrigerant 134a enters a well-insulated nozzle at 200 lbf/in.2, 140°F, with a velocity of 120 ft/s and exits at 90 lbf/in.2 with a velocity of 1500 ft/s.For steady-state operation, and neglecting potential energy effects, determine the temperature, in °F, and the quality of the refrigerant at the exit.
Air enters a diffuser operating at steady state at 540°R, 15 Ilbf/in.?, with a velocity of 600 ft/s, and exits with a velocity of 60 ft/s. The ratio of the exit area to the inlet area is 6. Assuming the ideal gas model for the air and ignoring heat transfer, determine the temperature, in °R, and pressure, in Ibf/in.?, at the exit.
Argon gas flows through a well-insulated nozzle at steady state. The temperature and velocity at the inlet are 550°R and 150 ft/s, respectively. At the exit, the temperature is 460°R and the pressure is 40 Ibf/in?. The area of the exit is 0.0085 ft?. Use the ideal gas model with k = 1.67, and neglect potential energy effects. Determine the velocity at the exit, in ft/s, and the mass flow rate, in Ib/s.

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