Homework Help is Here – Start Your Trial Now!
Engineering
Mechanical Engineering
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 Q. 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). 7. = 90126

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 Q. 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). 7. = 90126

Elements Of Electromagnetics
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
icon
Related questions
Question
Only do parts E and F, A, B, C, and D are already done with the work showing on the picture
of P T We 4 3 t V 4⁰ ㅋ = hour 21.55'L -10-382 350kha h hi-ha 481-224 4₂-4₂ 735.85-427 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 Q. 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). sutomated 3 Expansion valve or D capilary tube Q a State (: P=200kPa, X= 1; 2₁ = 2441,51221; 5₁ = 0.93774 125-14; T = -10.09°C Strke 2: S25=0.9377654²; P = 900 ppm, h₂ = 275.745 52; ha= hithre = 266.4 % 25, T₂ = 35.57°C 15₂ = 0.90625 45 51435 X2=0.9823 State3: Xs=0; P₁ = P₂=900kraj ks = 101.6 147; S3 = 6.37381 754; T3 = 35.51°2 Stute 4₁ P4 = P₁ = 20014 i hy=h₂ = 101.6157/12, 54-0.3942 494 ; Ty = -18.09° C; X4=0-3066 (h) P₁ = 90021. 4Qn Condenser Evaporator Q₂ 1₁=2014/0 @ Compressor 70% Work 1 sat Vayer 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. 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. State 1 P₁ = 350 Kit ~10.38°c), X₁-) ; h₁ = 4 01415 ; 51 = 1.786 415 4 Stale 2= 528 = 5₁ = 1.76145x1₂=950141²ch₂> 425-404, heth, the hip 4014 425-40-401 076 25 3/2 Stak) 1₂ = 12₂=4 50 4 1²₁ X ₂ = 0; 13 = 21.55°4₁2₁= 226 +25 Stak 4: My = 1 = 350kla hy=h₂ = 2261 2=;14=1₁ = -10,38° 4 -=435-8543²112=50.81°C 12 ?B=5 ; Mr = bint en 40 25 1m =0,114,35 hithy -2.25 Using R-410a as the working fluid: e) Determine the temperatures and pressures at the different points in the cycle (points 1, 2, 3, and 4). f) Determine the coefficient of performance value and the mass flow rate of the working fluid.
Transcribed Image Text:of P T We 4 3 t V 4⁰ ㅋ = hour 21.55'L -10-382 350kha h hi-ha 481-224 4₂-4₂ 735.85-427 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 Q. 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). sutomated 3 Expansion valve or D capilary tube Q a State (: P=200kPa, X= 1; 2₁ = 2441,51221; 5₁ = 0.93774 125-14; T = -10.09°C Strke 2: S25=0.9377654²; P = 900 ppm, h₂ = 275.745 52; ha= hithre = 266.4 % 25, T₂ = 35.57°C 15₂ = 0.90625 45 51435 X2=0.9823 State3: Xs=0; P₁ = P₂=900kraj ks = 101.6 147; S3 = 6.37381 754; T3 = 35.51°2 Stute 4₁ P4 = P₁ = 20014 i hy=h₂ = 101.6157/12, 54-0.3942 494 ; Ty = -18.09° C; X4=0-3066 (h) P₁ = 90021. 4Qn Condenser Evaporator Q₂ 1₁=2014/0 @ Compressor 70% Work 1 sat Vayer 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. 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. State 1 P₁ = 350 Kit ~10.38°c), X₁-) ; h₁ = 4 01415 ; 51 = 1.786 415 4 Stale 2= 528 = 5₁ = 1.76145x1₂=950141²ch₂> 425-404, heth, the hip 4014 425-40-401 076 25 3/2 Stak) 1₂ = 12₂=4 50 4 1²₁ X ₂ = 0; 13 = 21.55°4₁2₁= 226 +25 Stak 4: My = 1 = 350kla hy=h₂ = 2261 2=;14=1₁ = -10,38° 4 -=435-8543²112=50.81°C 12 ?B=5 ; Mr = bint en 40 25 1m =0,114,35 hithy -2.25 Using R-410a as the working fluid: e) Determine the temperatures and pressures at the different points in the cycle (points 1, 2, 3, and 4). f) Determine the coefficient of performance value and the mass flow rate of the working fluid.
Expert Solution
steps

Step by step

Solved in 3 steps with 6 images

SEE SOLUTIONCheck out a sample Q&A here
Blurred answer
Knowledge Booster
Refrigeration and Air Conditioning
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, mechanical-engineering and related others by exploring similar questions and additional content below.
Recommended textbooks for you
Elements Of Electromagnetics
Elements Of Electromagnetics
Mechanical Engineering
ISBN:
9780190698614
Author:
Sadiku, Matthew N. O.
Publisher:
Oxford University Press
Mechanics of Materials (10th Edition)
Mechanics of Materials (10th Edition)
Mechanical Engineering
ISBN:
9780134319650
Author:
Russell C. Hibbeler
Publisher:
PEARSON
Thermodynamics: An Engineering Approach
Thermodynamics: An Engineering Approach
Mechanical Engineering
ISBN:
9781259822674
Author:
Yunus A. Cengel Dr., Michael A. Boles
Publisher:
McGraw-Hill Education
Control Systems Engineering
Control Systems Engineering
Mechanical Engineering
ISBN:
9781118170519
Author:
Norman S. Nise
Publisher:
WILEY
Mechanics of Materials (MindTap Course List)
Mechanics of Materials (MindTap Course List)
Mechanical Engineering
ISBN:
9781337093347
Author:
Barry J. Goodno, James M. Gere
Publisher:
Cengage Learning
Engineering Mechanics: Statics
Engineering Mechanics: Statics
Mechanical Engineering
ISBN:
9781118807330
Author:
James L. Meriam, L. G. Kraige, J. N. Bolton
Publisher:
WILEY
SEE MORE TEXTBOOKS