Outside airat 90°FAir exiting atT>90°FT3 = 100°F3P3 = 225 lbf/in.²www2+CondenserP2 = 225 lbf/in.2h₂ = 130 Btu/lbExpansionvalveCompressorPower input = 200 Btu/minT4= 62°F 4Evaporatorwww1+ P₁ = 120 lbf/in.2Saturated vaporFig. P4.107Supply airto residenceat T<75°FReturnroom airat 75°F 4.107 A residential air-conditioning system operates at steadystate, as shown in Fig. P4.107. Refrigerant 22 circulatesthrough the components of the system. Property data at keylocations are given on the figure. If the evaporator removesenergy by heat transfer from the room air at a rate of 600Btu/min, determine (a) the rate of heat transfer between thecompressor and the surroundings, in Btu/min, and (b) thecoefficient of performance.

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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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4.105 Separate streams of steam and air flow through the tur- bine and heat exchanger arrangement shown in Fig. P4.105. 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. Determine (a) T3, in K, and (b) the power output of the second turbine, in kW. W 10,000 kW WE2 ? Turbine Turbine P3= 10 bar T3 = ? T2= 400°C Pz= 10 bar T 240°C P4=1 bar Steam www www in 1. 4. T = 600°C P=20 bar Ts 1500 K 5 Ps 1.35 bar m= 1500 kg/min Heat exchanger VT= 1200 K P6=1 bar Air in
4.105 Separate streams of steam and air flow through the tur- bine and heat exchanger arrangement shown in Fig. P4.105. 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. Determine (a) T3, in K, and (b) the power output of the second turbine, in kW. W = 10,000 kW Wr2= 1 Turbine Turbine P3= 10 bar T = ? T2= 400°C P2= 10 barl T=240°C P4 = 1 bar Steam www www in 1. T= 600°C P= 20 bar Ts= 1500 K 5 Pz=1.35 bar m = 1500 kg/min Heat exchanger VT.= 1200 K P6=1 bar Air in Fig 4.105
How to solve this question please
Thermodynamics I
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Solve for amounf of mass in lb and heat transfer. Step by step solution please thank you
= 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
Carbon Dioxide is contained in a piston-cylinder assembly and undergoes a cycle made of the fol- lowing processes: • Process 1-2: Constant volume from 1 bar, 300 K to 600 K • Process 2–3: Polytropic expansion with n=k until P3 = P1 • Process 3-1: Isobaric compression (a) Sketch the cycle on p-v and T-v coordinates (b) Determine the work and heat transfer in each process, in kJ/kg (c) Determine the type of cycle that this is. If it is a power cycle, compute the thermal efficiency. Otherwise, compute the coefficient of performance for a heat pump cycle.
4.54 WP An air-conditioning system is shown in Fig. P4.54 in which air flows over tubes carrying Refrigerant 134a. Air enters with a volumetric flow rate of 50 m³/min at 32°C, 1 bar, and exits at 22°C, 0.95 bar. Refrigerant enters the tubes at 5 bar with a quality of 20% and exits at 5 bar, 20°C. Ignoring heat transfer at the outer surface of the air conditioner, and neglecting kinetic and potential energy ef- fects, determine at steady state a. the mass flow rate of the refrigerant, in kg/min. b. the rate of heat transfer, in kJ/min, between the air and refrigerant. 3 + R-134a P3 = 5 bar x3 = 0.20 Refrigerant 134a Air P₁ = 1 bar T₁= 32°C = 305 K (AV)₁ = 50 m³/min Air 2+P₂=0.95 bar T₂ = 22°C = 295 K R-134a P4 = 5 bar T4 = 20°C
Two separate streams of air and steam flow through a compressor system and a heat exchanger, as shown in the figure. The diagram provides steady state operating data for this system. The transfer of heat with the surroundings can be neglected, as well as the effects of kinetic and potential energy. Air can be considered an ideal gas. Decide:a) The total power generated by both compressors: kW b) The mass flow of water: kg/s
A rigid tank of volume 0.5 m^3 is initially evacuated.a tiny hole develops in the wall, and air from the surrounding at 1 bar , 21 degree Celsius leaks in.eventually, the pressure in the tank reaches 1 bar .the process occur slowly enough that heat transfer between the tank and the surrounding keeps the temperature of the air inside the tank constant at 21 degrees Celsius. Determine the amount of heat transfer.

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