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

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= 95°F and m3 = 1.5 lb/s. Refrigerant 134a The figure belows shows three components of an air-conditioning system, where T3 flows through a throttling valve and a heat exchanger while air flows through a fan and the same heat exchanger. Data for steady- state operation are given on the figure. There is no significant heat transfer between any of the components and the surroundings. Kinetic and potential energy effects are negligible. Air Tj = 535°R C,= 0.240 Btu/I6•°R Saturated liquid R-134a T3, ṁ3 Fan Wey = -0.2 hp Throttling valve 4 Saturated vapor P5=P4 P4 = 60 lbf/in.2 T = 528°R -Heat exchanger Modeling air as an ideal gas with constant c, = 0.240 Btu/lb· °R, determine the mass flow rate of the air, in Ib/s. i Ib/s
The figure belows shows three components of an air-conditioning system, where T3 = 105°F and m3 = 1.5 lb/s. Refrigerant 134a flows through a throttling valve and a heat exchanger while air flows through a fan and the same heat exchanger. Data for steady-state operation are given on the figure. There is no significant heat transfer between any of the components and the surroundings. Kinetic and potential energy effects are negligible. Air T1 = 535°R C, = 0.240 Btu/lb-°R Saturated liquid R-134a T3, ṁ3 3. Fan = -0.2 hp Throttling valve Saturated vapor P5=P4 P4 = 60 lbf/in.2 T2= 528°R 2 Heat exchanger Modeling air as an ideal gas with constant c, = 0.240 Btu/lb · °R, determine the mass flow rate of the air, in Ib/s. m¡ = i Ib/s
Separate streams of air and water flow through the compressor and heat exchanger arrangement shown in the figure below, where m, 0.6 kg/s and To = 30°C. Steady-state operating data are provided on the figure. Heat transfer with the surroundings can be neglected, as can all kinetic and potential energy effects. The air is modeled as an ideal gas. 1 Air P₁ = 1 bar T₁ = 300 K m Compressor A P2=3 bar -2 T₂=600 K Determine: WEVA ܒܝ www wwww +6 T6, P6-Ps P₁ = 9 bar T₁=800 K Compressor B 3- P3 P2 T₁=450 K Heat exchanger 5+ 4 Water T5= 20°C Ps= 1 bar (a) the total power for both compressors, in kW. (b) the mass flow rate of the water, in kg/s. WevB =
The figure belows shows three components of an air-conditioning system, where T3 = 95°F and m3 = 3 lb/s. Refrigerant 134a flows through a throttling valve and a heat exchanger while air flows through a fan and the same heat exchanger. Data for steady-state operation are given on the figure. There is no significant heat transfer between any of the components and the surroundings. Kinetic and potential energy effects are negligible. m₁ = Saturated liquid R-134a T3, m3 i Throttling valve lb/s P4 = 60 lbf/in.² Air T₁=535°R Cp = 0.240 Btu/lb-ºR Fan wwww ²+² 2 T₂=528°R Wey=-0.2 hp Modeling air as an ideal gas with constant cp = 0.240 Btu/lb. °R, determine the mass flow rate of the air, i lb/s. Saturated vapor P5 P4 -Heat exchanger
Referring to the reversible heat pump cycle shown in the figure, p1 = 14.7 Ibf/in?, p4 = 27.8 lbf/in?, v1 = 12.6 ft³/Ib, v4 = 8.0 ft³/lb, and the gas is air obeying the ideal gas model. P4 pi TH V4 VI Determine TH, in °R, and the coefficient of performance. Step 1 Determine TH, in °R. TH = °R Save for Later Attempts: 0 of 1 used Submit Answer Step 2 The parts of this question must be completed in order. This part will be available when you complete the part above.
Separate streams of air and water flow through the compressor and heat exchanger arrangement shown in the figure below, where im =0.8 kg/s and T6 = 30°C. Steady-state operating data are provided on the figure. Heat transfer with the surroundings can be neglected, as can all kinetic and potential energy effects. The air is modeled as an ideal gas. Air P1 = 1 bar T = 300 K P4= 9 bar T4 = 800 K4 "cvA Compressor A Compressor B P2= 3 bar +2 T2= 600 K 3+ P3= P2 T3= 450 K www -Heat exchanger T6, P6= P5 Water Ts= 20°C Ps = 1 bar Determine: (a) the total power for both compressors, in kW. (b) the mass flow rate of the water, in kg/s.
The figure below shows a turbine-driven pump that provides water to a mixing chamber located dz = 5 m higher than the pump, where in = 50 kg/s. Steady-state operating data for the turbine and pump are labeled on the figure. Heat transfer from the water to its surroundings occurs at a rate of 2 kW. For the turbine, heat transfer with the surroundings and potential energy effects are negligible. Kinetic energy effects at all numbered states can be ignored. h2 = 417.69 kJ/kg Mixing chamber Ocy = 2 kW Steam P3 = 30 bar T3 = 400°C dz Turbine Pump P4 = 5 bar T4 = 180°C Saturated liquid water m, Pi = 1 bar Determine: (a) the magnitude of the pump power, in kW. (b) the mass flow rate of steam, in kg/s, that flows through the turbine.
After graduation, you take a job with the Acme energy services company. Your first job is to purchase high efficiency heat pumps. The heat pumps employ mechanical power and a heat engine to provide heat at TH = 100°C. A low temperature heat sink at TC = 20ºC is also available. A salesman shows you two models. Performance data for each model operating at steady state are provided in the Figure below
Q1. Considering the example of refrigerator as system, define and provide the example from the refrigerator system to each of the following: 1. Open system 2. Closed system 3. Independent and dependent property 4. Intensive and extensive property 5. Equilibrium Q2. Considering the example of automotive vehicle system (car), define and provide the example from the car system to each of the following: 1. Isobaric process 2. Isothermal process 3. Isochoric process 4. Adiabatic process 5. Steady state and unsteady state process
20 g of air undergoes a closed cycle, illustrated in Figure Q2, which consists of the following 3 processes: 1-2 Constant pressure heat rejection. 2-3 Constant volume heat addition. 3-1 Isothermal expansion back to the original conditions. P (kPa) 75 1 V (m') 0.025 0.04 Figure Q2: Three process cycle Given that Rair = 287 J/kg-K, and Cy = 718 J/kg-K, and assuming ideal gas conditions throughout: (a) Determine the temperatures at points 1, 2 and 3, and the pressure at point 3. (b) Determine the work during each process, and the net work from the cycle. (c) Determine the heat transferred during each process. (d) Verify that this is a cycle.
The following processes occur in a reversible thermodynamic cycle: 1-2: 0.2 kg heating at constant pressure 1.05 bar at specific volume 0.1 m3/kg and work done -515 J. 2-3: Isothermal compression to 4.2 bar. 3-4: Expansion according to law pv1./= constant. 4-1: heating at constant volume back to the initial conditions. Using file 3, which figure number is associated the process? ?
The figure below shows a turbine-driven pump that provides water to a mixing chamber located dz = 25 m higher than the pump, where in = 80 kg/s. Steady-state operating data for the turbine and pump are labeled on the figure. Heat transfer from the water to its surroundings occurs at a rate of 2 kW. For the turbine, heat transfer with the surroundings and potential energy effects are negligible. Kinetic energy effects at all numbered states can be ignored. h = 417.69 kJ/kg Mixing chamber Oey = 2 kW Steam P3 = 30 bar T3= 400°C dz Turbine Pump P4 = 5 bar T= 180°C 14 Saturated liquid water m, Pi = 1 bar Determine: (a) the magnitude of the pump power, in kW. (b) the mass flow rate of steam, in kg/s, that flows through the turbine.

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