The figure belows shows three components of an air-conditioning system, where T3 = 115°F and ng = 3 lb/s. Refrigerant 134aflows through a throttling valve and a heat exchanger while air flows through a fan and the same heat exchanger. Data for steady-stateoperation are given on the figure. There is no significant heat transfer between any of the components and the surroundings. Kineticand potential energy effects are negligible.AirT = 535°Rp= 0.240 Btu/lb-"RSaturated liquid R-134aT3, m3FanWey=-0.2 hpThrottlingvalve5wwwSaturated vaporPs=P4P.= 60 lbfin.?T;= 528°R +2- Heat exchangerModeling air as an ideal gas with constant c, = 0.240 Btu/lb - °R, determine the mass flow rate of the air, in Ib/s.mi =Ib/s

Answered: Image /qna-images/answer/398ed388-06a5-4e90-ab31-17a2095339e9.jpg

Answered: The figure belows shows three…

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

See similar textbooks

Similar questions

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
Write the energy balance for the described control volume
pls answer the given
Assume 3.15 lb/sec of fluid enter a steady-state, steady-flow system with P1 = 92.43 psia, P1 = 0.392 lb/ft, v1 = 95.09 fps, u = 793.46 BTU/lb, and Jeave with P2 = 13.49 psia, p2 = 0.191 lb/ft, v2 = 499.53 fps, and u2 = 773.05 BTU/lb. During the passage through the open system, each pound rejects 11.1 BTU of heat. Determine the work in hp. %3D %3D !!
4.30 Refrigerant 134a enters a heat exchanger operating ai steady state as a superheated vapour at 10 bars. 60°C. where it is cooled and condensed to saturated liquid at 10 bars. The mass flow rate of the refrigerant is 10 kg/min. A separate stream of air enters the heat exchanger at 37°C with a mass flow rate of 80 kg/min. Ignoring heat transfer from the outside of the heat exchanger and neglecting kinetic and potential energy effects, determine the exit air temperature, in °C.
5. Air enters a compressor at a rate of 0.5 Kgs¹ with a velocity of 6.4 ms', specific volume 0.85 m³Kg¹ and a pressure of 1 bar. It leaves the compressor at a pressure of 6.9 bar with a specific volume of 0.16 m³Kg¹ and a velocity of 4.7 ms¹. The internal energy of the air at exit is greater than that at entry by 85 KJKg'. The compressor is fitted with a cooling system which removes heat at a rate of 60 KJs¹. Calculate the power required to drive the compressor and the cross- sectional areas of the inlet and outlet pipes.
1. A tank containing 250 kg of kerosene is to be heated from 20°C to 40 °C in 15 minutes, using 4 bar steam. The kerosene has a specific heat capacity of 2.0 kJ/kg-°C.over that temperature range. ha at 4.0 bar is 2,108.1 kJ/kg. The tank is well insulated and heat losses are negligible. Determine the rate of heat transfer required and steam flow.
Air enters the cylinder of a 4-stroke gasoline engine at 33°C and 101.2 kPa. Engine clearance is 10.5% of the displacement. 2600 kJ/kg of heat is added during the constant volume heat addition process. Determine the following:a. Pressure & Specific Volume at each state.b. Work per unit mass (using volume and pressure).
Gas supply line- Gas A 2.1 m3 tank initially contains a gas at 170 kPa, 370 K. The tank is connected a line carrying same gas at 1700 kPa and 370 K. What should be heat transfer during this process, in kJ, so that the final pressure and temperature are 1700 kPa and 370 K, respectively. (cp=D0.92 kJ/kg.K, c=0.64 kJ/kg.K).
3. Air is contained within a piston-cylinder assembly The cross sectional area of the piston is 0.01 m². Initially the piston is at 1 bar and 25°C, 10 cm above the base of the cylinder. In this state, the spring exerts no force on the piston. The system is then reversibly heated to 100°C. As the spring is compressed, it exerts a force on the piston according to: F=-kx where k= 50,000 N/m and x is the displacement length from its uncompressed position. Determine the work done. a. -166 J b. -216 J c. 166 J d. 216 J
Assume 1.62 lb/sec of fluid enter a steady-state, steady-flow system with P1 = 95.18 psia, ρ1 = 0.341 lb/ft3, v1 = 93.75 fps, u1 = 798.07 BTU/lb, and leave with P2 = 16.73 psia, ρ2 = 0.134 lb/ft3, v2 = 427.15 fps, and u2 = 761.09 BTU/lb. During the passage through the open system, each pound rejects 11 BTU of heat. Determine the work in hp.
A turbine operating under steady-flow conditions receives steam at the following state; pssure,100 bar; specific internal energy 2773 kJ/kg, velocity 30 m/s. the state of steam leaving the turbine is as follow: pressure 1 bar, specific internal energy 2450 kJ/kg, velocity 90 m/s. Heat is rejected to the surroundings at the rate of 0.25 kW and the rate of steam flow through the turbine is 0.4 kg/s calculate the power developed by the .turbine

SEE MORE QUESTIONS

Recommended textbooks for you

Elements Of Electromagnetics

Mechanical Engineering

ISBN:

9780190698614

Author:

Sadiku, Matthew N. O.

Publisher:

Oxford University Press

Mechanics of Materials (10th Edition)

Mechanical Engineering

ISBN:

9780134319650

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Thermodynamics: An Engineering Approach

Mechanical Engineering

ISBN:

9781259822674

Author:

Yunus A. Cengel Dr., Michael A. Boles

Publisher:

McGraw-Hill Education

Elements Of Electromagnetics

Mechanical Engineering

ISBN:

9780190698614

Author:

Sadiku, Matthew N. O.

Publisher:

Oxford University Press

Mechanics of Materials (10th Edition)

Mechanical Engineering

ISBN:

9780134319650

Author:

Russell C. Hibbeler

Publisher:

PEARSON

Thermodynamics: An Engineering Approach

Mechanical Engineering

ISBN:

9781259822674

Author:

Yunus A. Cengel Dr., Michael A. Boles

Publisher:

McGraw-Hill Education

Control Systems Engineering

Mechanical Engineering

ISBN:

9781118170519

Author:

Norman S. Nise

Publisher:

WILEY

Mechanics of Materials (MindTap Course List)

Mechanical Engineering

ISBN:

9781337093347

Author:

Barry J. Goodno, James M. Gere

Publisher:

Cengage Learning

Engineering Mechanics: Statics

Mechanical Engineering

ISBN:

9781118807330

Author:

James L. Meriam, L. G. Kraige, J. N. Bolton

Publisher:

WILEY

SEE MORE TEXTBOOKS