Only answer G and H, the important info you need should already be worked out above. PT4S4south21.55°24 350k-hi-hs-401-226A 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 Q₁ = 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).935.85-401Expansionvalve orcapillary tube0-As part of the design, you should:a)WStale (: R=200kPa, X=/; h₁ = 244,5/221; S₁ = 0.9377 * ; T₁ = -10.09°CState 2: 525² 0.9327 % +1²; P = 900 ppa, h₂ = 275,7%; ha= hit hive = 266. 41/29, T₁ = 35-51°C 15₂ = 0.90 251 252 24,5 X ₂ = 0.9822State 3: X₂ = 0; P₁ = P₂ = 900kPa ; hs = 101.6 55; 53= 6.37381-27; T3 = 35.51°2Stute 41 P4 = V₁ = 2014/1² i hy=h3 = 101.6157/13, S4 = 0.39412 41; Ty = -10.09° C; X4=0.3066h)4011CondenserEvaporatorwwwwQPi=200 кваCompressor70%WorkI sat vayrSpecify 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.Que¬B=5; Must have you -2267m ²0-1143423Using 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.State 1: P₁ = 350 kPa = 10.38²4; X₁²); h₁ = 40145 ; Si=1.78*4State 2: 528 = 5,= 1.76614₁1₂=950km; h₂=425.401, h₂th, the 40)+ 425-40-401 - 435.85 105 12₂= 50.11 °C#2 Stall: 13 = 1/2=450 kP; X₂ = 0; 13 = 21.55°4₁ 2₁ = 226 1²5State 4: My=11₁ = 350knihy=h₂=226; 14=t₁ = -10,38°2Using ammonia (NH3) as the working fluid:g) Determine the temperatures and pressures at the different points in the cycle (points 1, 2, 3,and 4).h) Determine the coefficient of performance value and the mass flow rate of the working fluid.

The refrigeration temperature is between The outside temperature range is .The refrigeration effect…

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 Q₁ = 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). 3 Expansion valve or capillary tube O P₁ = 900kla 47011 Condenser Evaporator ww Compressor 70% Work I sat Vayer Pi=200 ква As part of the design, you should: a) Specify and justify the constraints (isentropic efficiency, condenser, and evaporator temperature) you chose. b) Show the cycle in relation to the two-phase region on a temperature-entropy (T-S) diagram. = 244,5/271,; 5₁ = 0,9327 * ; T₁ = -10.09°( 0 = 900 ppm, h₂ = 275, 75x; h₂ =hi thi = 266.4 1/25; T₁ = 35-51°C 15₂ = 0.90 235 245 241 X ₂ = 0.9822 ; ks = 101.61 +2²; 5₂ = 0.37 381-375; 3= 35.51°2 - h3 = 101.6107/154 = 0.39424; Ty = -10.09° C; X4=0.3066 20 | B=5 ; Muc = fant - you 267m ²0-11434 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. State2: P₁ = 350 KV₁; +₁ = -10.38²c|; X₁²); h₁ = 401%25; 5₁=176643544 State 2: 528 = 5,= 1.76664₁1₂=95041²;h₂ = 425.404, hath, the then yolt! 32 Stakl: 13 = 1/₂=4 50 KPA; X ₂ = 0; 13 = 21.55°4₁ h₁ = 226 2²7 State 4: My=11₁ = 350kMahy=h3=2261; 14 = t₁ = -10,38°2 425-40-401 0.76 Using ammonia (NH3) as the working fluid: g) Determine the temperatures and pressures at the different points in the cycle (points 1, 2, 3, and 4). h) Determine the coefficient of performance value and the mass flow rate of the working fluid. -=435.8

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 Q₁ = 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). 3 Expansion valve or capillary tube O P₁ = 900kla 47011 Condenser Evaporator ww Compressor 70% Work I sat Vayer Pi=200 ква As part of the design, you should: a) Specify and justify the constraints (isentropic efficiency, condenser, and evaporator temperature) you chose. b) Show the cycle in relation to the two-phase region on a temperature-entropy (T-S) diagram. = 244,5/271,; 5₁ = 0,9327 * ; T₁ = -10.09°( 0 = 900 ppm, h₂ = 275, 75x; h₂ =hi thi = 266.4 1/25; T₁ = 35-51°C 15₂ = 0.90 235 245 241 X ₂ = 0.9822 ; ks = 101.61 +2²; 5₂ = 0.37 381-375; 3= 35.51°2 - h3 = 101.6107/154 = 0.39424; Ty = -10.09° C; X4=0.3066 20 | B=5 ; Muc = fant - you 267m ²0-11434 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. State2: P₁ = 350 KV₁; +₁ = -10.38²c|; X₁²); h₁ = 401%25; 5₁=176643544 State 2: 528 = 5,= 1.76664₁1₂=95041²;h₂ = 425.404, hath, the then yolt! 32 Stakl: 13 = 1/₂=4 50 KPA; X ₂ = 0; 13 = 21.55°4₁ h₁ = 226 2²7 State 4: My=11₁ = 350kMahy=h3=2261; 14 = t₁ = -10,38°2 425-40-401 0.76 Using ammonia (NH3) as the working fluid: g) Determine the temperatures and pressures at the different points in the cycle (points 1, 2, 3, and 4). h) Determine the coefficient of performance value and the mass flow rate of the working fluid. -=435.8

Refrigeration and Air Conditioning Technology (MindTap Course List)

8th Edition

ISBN:9781305578296

Author:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Publisher:John Tomczyk, Eugene Silberstein, Bill Whitman, Bill Johnson

Chapter22: Condensers

Section: Chapter Questions

Problem 7RQ: When a standard-efficiency air-cooled condenser is used, the condensing refrigerant will normally be...

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