Please only answer parts C and D. Parts A and B are already answered in the picture A refrigeration system is to be designed to maintain the temperature in the range of -15°C to -5°C,while the outside temperature varies from 15°C to 25°C. The total thermal load on the storage unit isgiven as 20 kW. Obtain an initial design for the vapor compression refrigeration system shown below.For safe operation and other factors, such as additional energy transfer, design the system using asafety factor of 1.3 such that QL = 26 kW. The compressor efficiency could range from 60 to 80 percent.This is to be completed individually. It would be highly unlikely for multiple students to select all thesame design parameters in part (a).Saturbel43Expansionvalve orcapillary tubeP= 900кваQHकीktState (: R=Dook Pn, X= 1 ; h₁= 2441|512714; S₁ = 0.9377 4 235-1 ; T₁ = -10.09°CCondenserEvaporatorTel.Pi=200 ква0Compressor70%WorkI sat vayerAs part of the design, you should:a)Specify and justify the constraints (isentropic efficiency, condenser, and evaporatortemperature) you chose.b) Show the cycle in relation to the two-phase region on a temperature-entropy (T-S) diagram.Strte): 525 0.9327 76542 P= 900 kPa, h₂ = 275, 742, ha thith=266. 41/25, T₂ = 35.51 °C 152 = 0.90 275 1454 141, X₂2 = 0.9822State3: X₁=0; 1² = R₂ = 4krajin₂ = 101.675₂ = 0.37384-7+; 13 = 35.51°2Stute 4 P4 = V₁ = 2004/² i by=h₂ = 1V1.610/3, 54 -0.3942 #444; Ty = -10.09 ° C; X4=0.3066h) Using R-22 as the working fluid:c) Determine the temperatures and pressures at the different points in the cycle (points 1, 2, 3,and 4).d) Determine the coefficient of performance value and the mass flow rate of the working fluid.

A refrigeration system is to be designed to maintain the temperature in the range of -15°C to -5°C, while the outside temperature varies from 15°C to 25°C. The total thermal load on the storage unit is given as 20 kW. Obtain an initial design for the vapor compression refrigeration system shown below. For safe operation and other factors, such as additional energy transfer, design the system using a safety factor of 1.3 such that Qu= 26 kW. The compressor efficiency could range from 60 to 80 percent_ This is to be completed individually. It would be highly unlikely for multiple students to select all the same design parameters in part (a). Band

A refrigeration system is to be designed to maintain the temperature in the range of -15°C to -5°C, while the outside temperature varies from 15°C to 25°C. The total thermal load on the storage unit is given as 20 kW. Obtain an initial design for the vapor compression refrigeration system shown below. For safe operation and other factors, such as additional energy transfer, design the system using a safety factor of 1.3 such that Qu= 26 kW. The compressor efficiency could range from 60 to 80 percent_ This is to be completed individually. It would be highly unlikely for multiple students to select all the same design parameters in part (a). Band

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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boiler turbine condenser In an ideal reheated Rankine cycle, water vapor enters the high pressure turbine at a temperature of 400 °C and a pressure of 3 MPa and exits at a pressure of 0.8 MPa. After the water vapor is reheated to 400 °C, it enters the low pressure turbine and expands to a pressure of 10 kPa. a) Find the total amount of heat given to the water vapor (kJ/kg). b) Calculate the thermal efficiency of the cycle. c) Show the cycle in the T-s diagram.
Step 3 Determine the thermal efficiency of the cycle. n = Save for Later % Attempts: 0 of 4 used Submit Answer
Consider a steam power cycle operating according to the simple ideal Rankine cycle. Steam enter the turbine 4MPa pressure and 400oC and It condenses in the condenser at a pressure of 10 kPa. a)Calculate the thermal efficiency of the cycle. b)Draw the T-s diagram for the cycle.
The air in an engine operating according to the ideal Otto cycle has a pressure of 50 kPa and a temperature of 280 K at the beginning of the compression process. The compression ratio of the cycle is 10. By accepting that specific heats do not change with temperature, AK. a) Find the highest temperature (K) of the cycle. b) Find the amount of heat (kJ / kg) entering the cycle. c) Find the thermal efficiency of the cycle. d) Calculate the average effective pressure (kPa). (c, = 1.005 kJ/kg.K, c, = 0.718 kJ/kg.K, R = 0.287 kJ/kg.K, k =1.4)
The air in an engine operating according to the ideal Otto cycle has a pressure of 50 kPa and a temperature of 280 K at the beginning of the compression process, and a temperature of 750 K at the end of the expansion process. The compression ratio of the cycle is 10. By accepting that specific heats do not change with temperature, a) Find the highest temperature (K) of the cycle. b) Find the amount of heat (kJ / kg) entering the cycle. c) Find the thermal efficiency of the cycle. d) Calculate the average effective pressure (kPa). (Cp 1.005 kJ / kg.K, c = 0.718 kJ / kg.K, R = 0.287 kJ / kg.K, k = 1.4)
In a Stirling cycle using Helium as the working fluid, the pressure at the start of the compression process at a constant temperature of 55°C is 100 kPa and the pressure ratio is 11. Expansion takes place at a constant temperature of 800°C. Since the mass of helium is 3 kg,a) Find the heat supplied to and removed from the cycle.b) Find the net work produced by the cycle.c) Find the thermal efficiency of the cycle.d) Find the heat taken in or given off in the regeneration process.
3-a- establish an expression in terms of the volume ratio of compression for the ideal thermal efficiency of an engine working on the constant volume cycle. b- The diameter of the piston of a petrol engine is 100 mm and the stroke is 100m. The clearance volume is 0.105 lit. if its relative efficiency is 0.4, calculate the actual thermal efficiency.
100 20. 150 200 250 300 350 400 450 500 550 600 650 QU PONTHFC-134a 700 200. 10. 8. 0.0012 0.0013 0.0014 0,0016 0.0018 Pressure-Enthalpy 0.0020 0.0030 Diagram 100. 80. 6. volume = 0.0040 m³ikg (SI Units) 4. 0.0060 60. 0.0080 0.010 40. 2. 0.015 0.020 20. 50 1. 0.030 0.8 - 0.040 10. 8. 0.6 0.060 0.4 6. 0.080 0.10 - temperature = 0°C 0.2 0.15 0.20 2. 0.1 0.08 0.30 0.40 0.06 1. 0.8 0.60 0.04 0.6 0.80 1.0 0.4 0.02 1.5 2.0 0.2 0.01 100 150 200 250 300 350 400 450 0.1 700 500 550 600 650 Enthalpy (kJ/kg) Pressure (MPa) 0.65 0.70 0.75 0.80 0.85 09- os 00070 -40 temperature = -20°C 06'0 0.95 Dinby pa 10- 00'L 0- 1.05 1.10 1.15 1.20 1.25. 8 1.30 10 0.00080 quality 0.4 1.35 06000 o 0.0010 OD' OS' 1.55 09 6'0. 09 i 70 06 101 120 N 140 091 170 061 210 220 °C 230 temperature 4. Pressure (bar)
* A refrigerator uses refrigerant - 134s as a working fluid and operates on a ideal vapour compression cycle. The Low Pressure is 2 bars and the high pressure is at 6 bars. 1.) Plot a qualitative Sketch of the T-s diagram of the cycle 1.) Specify the four processes involved in the cycle and write the 1st Law of thermodynam is for each one of them 1) Calculate the work needed by the compressor at the compression Stage iv.) Calculate the heat removed from the cooling Chamber.
The air in an engine operating according to the ideal Otto cycle has a pressure of 50 kPa and a temperature of 280 K at the beginning of the compression process. The compression ratio of the cycle is 10. By accepting that specific heats do not change with temperature, a) Find the highest temperature (K) of the cycle. b) Find the amount of heat (kJ / kg) entering the cycle. c) Find the thermal efficiency of the cycle. d) Calculate the average effective pressure (kPa). (c, = 1.005 kJ/kg.K, c = 0.718 kJ/kg.K, R = 0.287 kJ/kg.K, k =1.4)
Read the questions carefully and answer with complete solution and units.Use the steam tables provided and use 4 decimal places for solving. Draw the T-S diagrams properly with respect to the saturation line. Consider a steam power plant operating on the ideal Rankine cycle.The boiler is maintained at 4 MPa, and the condenser at 10 kPa. The steam quality leaving the turbine is at 80%. a.) Draw the proper T-S diagram of the cycle with proper label for the points. b.)Find the temperature of the steam entering the turbine,Qa, Qr, Wt,Wp, Wnet,efficiency, and steam rate. Final answers must be: 367.45°C,2939.58??/??,1914.24??/??,1029.37??/??,4.03??/??,1025.34??/??,34.88%,3.51??/??ℎ
Read the questions carefully and answer with complete solution and units.Use the steam tables provided and use 4 decimal places for solving. Draw the T-S diagrams properly with respect to the saturation line. Consider a steam power plant operating on the ideal Rankine cycle.The boiler is maintained at 4 MPa, and the condenser at 10 kPa. The steam quality leaving the turbine is at 80%. a.) Draw the proper T-S diagram of the cycle with proper label for the points. b.)Find the temperature of the steam entering the turbine,Qa, Qr, Wt,Wp, Wnet,efficiency, and steam rate