Engineering
ME 304 WU Vapor Compression Refrigeration System Compression Cycle Experiment

ME 304

Widener University

ME

Question Description

I’m trying to study for my Engineering course and I need some help to understand this question.

Experiment 7: Refrigeration Compression Cycle

i need you to do lab report just( Abstract and results ) if you need any thing just text me

If you read the instructions, it is asking you evaluate all measured results critically for Conditions 1 through 3 . That is, for each of these Conditions, you should use the six temperatures and the two pressures measured to determine all quantities listed in the Nomenclature on Page 1. Most importantly:

  • compressor power/work
  • Isentropic efficiency of the compressor
  • Rate of refrigeration (cooling load)
  • Condenser heat transfer rate
  • Coefficient of performance of a refrigerator
  • Coefficient of performance of refrigeration Carnot cycle

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Widener University School of Engineering ME304 Mechanical Measurements II Experiment 7: Vapor Compression Refrigeration System (VCRS) Introduction Most refrigerators, freezers and heat pumps operate on a simple non-ideal vapor compression cycle. Please consult any engineering thermodynamics textbook (for example [1]or [2]) to review the details of this cycle. For this laboratory, the state numbering and the nomenclature found in [1] will be used, as shown below in Figure 1 and Figure 2. Figure 1: Schematic of a simple refrigeration system [1]. Figure 2 A vapor compression cycle shown on T-s and P-h diagrams [1]. Nomenclature that is most relevant to this laboratory: TC – temperature of the cold space (cold reservoir) TH – temperature of the hot space (hot reservoir) Tevap – evaporator approach temperature difference Tcond – condenser approach temperature difference Tsh – superheating at the evaporator exit Tsc – subcooling at the condenser exit Tmax – maximum refrigerant temperature Pevap – evaporator pressure Pcond – condenser pressure 𝑊̇𝑐 , 𝑤𝑐 – compressor power, work per unit mass c – isentropic efficiency of the compressor 𝑄̇𝑒𝑣𝑎𝑝 , 𝑞𝑒𝑣𝑎𝑝 – rate of refrigeration (cooling load), refrigeration per unit mass 𝑄̇𝑐𝑜𝑛𝑑 , 𝑞 – condenser heat transfer rate, condenser heat per unit mass 𝐶𝑂𝑃𝑅 = 𝑐𝑜𝑛𝑑 𝑄̇𝑒𝑣𝑎𝑝 𝑊̇𝑐 = 𝐶𝑂𝑃𝑅,𝐶𝑎𝑟𝑛𝑜𝑡 = 𝑞𝑒𝑣𝑎𝑝 𝑤𝑐 𝑇𝑐 𝑇𝐻 −𝑇𝑐 – coefficient of performance of a refrigerator – coefficient of performance of reftrigeration Carnot cycle Objective To evaluate in detail the characteristics of a refrigeration system operating on a simple non-ideal vapor compression cycle and to evaluate the dependence of these characteristics on the temperatures of the cold and hot spaces. Theoretical Background See any engineering thermodynamics textbook (for example [1] or [2]). Experiment Equipment TecQuipment Refrigeration Cycle Trainer EC1500 schematic is shown in Figure 3 and the Control Panel is shown in Figure 4. See separate document [3] for description and further detail. Figure 3: Schematic of the EC1500 unit Figure 4 The control panel of the EC1500 unit Testing Procedure Before following this procedure, become well familiar with the EC1500 unit. • • Due to the maximum allowable working pressure of the refrigerant in the condenser coil, do not heat the left (hot water) tank over 45 ○C. After the compressor has been turned OFF wait for at least five minutes before it is turned on again, or it could be damaged. This procedure first evaluates near-steady-state condition with the water pump turned on and then a faster changing condition when the water pump is switched off. 1. 2. 3. 4. 5. 6. 7. 8. 9. 10. 11. 12. 13. 14. 15. 16. 17. 18. 19. 20. Read and record ambient pressure using the mercury barometer. Convert to bars. Start VDAS software and select EC1500 Enter barometric pressure Start data communication Set data recording for automatic every 5 seconds Create a chart showing the two water temperatures Turn the water PUMP ON using the pump switch on the control panel. Top the right tank off (to the lower surface of the top plate), if needed. Wait until water temperature in the two water tanks is within 0.5 ○C Turn the COMPRESSOR ON using the compressor switch on the control panel. Wait until the temperature difference between the two tanks is stable (about 10 minutes). Record the time (from data acquisition) and all readings from LCD panels by hand (Condition 1) Run the unit for another 10-15 minutes Turn the water PUMP OFF Record the time and all readings by hand (Condition 2) Wait until the hot water reaches 40 ○C Record the time and all readings by hand (Condition 3) Switch the compressor OFF Stop the data acquisition Save the recorded data Save the chart (as image) Presentation of Results: Evaluate all measured results critically and present most important/interesting findings as tables and/or graphs. Each table and each graph should have its main ‘message’ reflected in its title. Your main goal is to present your results obtained for Conditions 1 through 3 above. For each Condition use the six temperatures and the two pressures measured to determine all quantities listed in the Nomenclature on Page 1. For each Condition, you will need to evaluate the refrigerant properties at each of the four states (see Figure 1) using either tables or EES. Then evaluate heat and work terms (per unit mass only, kJ/kg) based on the enthalpies and energy balances. You may use the “Refrigeration Calculated” values in VDAS data file, but only to verify your obtained values. Observe how each of the evaluated parameters changes as the cold and hot water temperatures change. Optional: Graph selected quantities continuously for entire time period between Condition 1 and Condition 3. References [1] S. Klein, G. Nellis, Thermodynamics, Cambridge University Press, 1st Edition (2011) [2] Y. A. Cengel and M. A. Boles, Thermodynamics – An Engineering Approach, McGraw-Hill (any edition) [3] A pdf file with the description of the EC1500 unit Time Time Environment Refrigeration Inputs Ambient Pressure Suction Line Temperature, T R1 (s) Data Series 1 (bar) 0 4 (°C) 1.01325 -1.01325 -- Data Series 2 0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 80 85 90 95 100 105 110 115 120 125 130 135 140 145 150 155 160 165 170 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 19.9 19.9 19.9 19.9 19.9 19.9 19.9 19.9 19.9 20.0 20.0 20.0 19.9 19.7 19.5 19.4 19.3 19.3 19.3 19.4 19.4 19.5 19.5 19.5 19.6 19.5 19.5 19.5 19.5 19.4 19.4 19.3 19.2 19.1 19.0 175 180 185 190 195 200 205 210 215 220 225 230 235 240 245 250 255 260 265 270 275 280 285 290 295 300 305 310 315 320 325 330 335 340 345 350 355 360 365 370 375 380 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 18.9 18.7 18.5 18.3 18.1 17.9 17.6 17.3 17.0 16.8 16.4 16.0 15.7 15.2 14.8 14.4 13.9 13.5 13.1 12.5 12.0 11.5 10.9 10.3 9.9 9.4 8.7 8.2 7.7 7.0 6.4 5.8 5.0 4.3 3.0 0.0 -1.0 -1.2 -1.4 -1.4 -1.4 -1.6 385 390 395 400 405 410 415 420 425 430 435 440 445 450 455 460 465 470 475 480 485 490 495 500 505 510 515 520 525 530 535 540 545 550 555 560 565 570 575 580 585 590 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 -1.7 -1.8 -1.9 -1.9 -1.9 -2.1 -2.0 -1.4 -0.8 -0.2 0.1 0.4 0.7 0.9 1.1 1.3 1.3 1.4 1.4 1.5 1.5 1.6 1.7 1.8 1.9 2.0 2.0 1.9 1.9 1.8 1.8 1.8 1.8 1.9 1.8 1.9 1.9 2.1 2.2 2.3 2.3 2.3 595 600 605 610 615 620 625 630 635 640 645 650 655 660 665 670 675 680 685 690 695 700 705 710 715 720 725 730 735 740 745 750 755 760 765 770 775 780 785 790 795 800 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 2.1 1.9 1.5 1.2 1.0 0.9 0.9 0.9 1.1 1.2 1.3 1.3 1.3 1.3 1.3 1.1 1.1 1.0 1.0 1.1 1.1 1.1 1.2 1.3 1.4 1.6 1.7 1.8 2.0 2.0 1.9 1.8 1.6 1.5 1.4 1.4 1.4 1.5 1.5 1.6 1.7 1.8 805 810 815 820 825 830 835 840 845 850 855 860 865 870 875 880 885 890 895 900 905 910 915 920 925 930 935 940 945 950 955 960 965 970 975 980 985 990 995 1000 1005 1010 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.8 1.8 1.7 1.6 1.5 1.5 1.5 1.5 1.6 1.7 1.7 1.6 1.6 1.4 1.3 1.1 0.9 0.7 0.6 0.5 0.5 0.5 0.5 0.6 0.6 0.5 0.5 0.6 0.6 0.7 0.9 1.1 1.3 1.7 1.9 2.2 2.5 2.7 2.7 2.7 2.5 2.2 1015 1020 1025 1030 1035 1040 1045 1050 1055 1060 1065 1070 1075 1080 1085 1090 1095 1100 1105 1110 1115 1120 1125 1130 1135 1140 1145 1150 1155 1160 1165 1170 1175 1180 1185 1190 1195 1200 1205 1210 1215 1220 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.8 0.9 0.3 0.0 -0.1 -0.1 -0.1 0.0 0.0 0.1 0.3 0.4 0.5 0.7 0.8 1.0 1.1 1.0 0.9 0.8 0.8 0.7 0.7 0.7 0.8 0.8 0.9 0.9 0.9 1.0 1.0 1.0 1.0 1.0 1.1 1.2 1.2 1.3 1.3 1.4 1.4 1.3 1225 1230 1235 1240 1245 1250 1255 1260 1265 1270 1275 1280 1285 1290 1295 1300 1305 1310 1315 1320 1325 1330 1335 1340 1345 1350 1355 1360 1365 1370 1375 1380 1385 1390 1395 1400 1405 1410 1415 1420 1425 1430 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.3 1.2 1.1 1.0 1.0 1.0 1.0 0.9 1.0 1.1 1.1 1.1 1.2 1.2 1.2 1.2 1.0 0.9 0.8 0.7 0.6 0.5 0.5 0.5 0.5 0.5 0.5 0.5 0.6 0.6 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.8 0.9 0.9 1435 1440 1445 1450 1455 1460 1465 1470 1475 1480 1485 1490 1495 1500 1505 1510 1515 1520 1525 1530 1535 1540 1545 1550 1555 1560 1565 1570 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 1.01325 0.9 1.0 1.0 1.0 0.9 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.8 0.7 0.7 0.6 0.6 0.6 0.7 1.2 1.7 2.5 3.0 3.6 4.0 4.6 5.0 5.5 Discharge Temperature, T R2 TEV Inlet Temperature, T R3 TEV Outlet Temperature, T R4 (°C) (°C) (°C) --- --- --- 19.9 19.9 19.9 19.9 19.9 19.9 19.9 19.9 19.9 19.9 19.9 19.9 19.9 21.2 23.3 24.8 25.5 25.8 25.7 25.5 25.4 25.4 25.5 25.8 26.1 26.5 26.9 27.3 27.7 28.4 28.8 29.3 30.0 30.4 30.8 19.9 19.9 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.0 20.1 21.2 22.8 23.8 24.5 24.6 24.5 24.3 24.2 24.0 24.0 24.1 24.3 24.5 24.7 25.1 25.3 25.7 26.1 26.6 26.9 27.5 27.9 19.5 19.5 19.5 19.5 19.5 19.5 19.5 19.5 19.5 19.5 19.5 19.5 19.5 19.5 19.5 19.3 19.0 18.6 18.2 17.5 15.9 13.9 12.2 10.0 5.1 -2.1 -8.6 -11.4 -11.4 -10.9 -10.2 -9.4 -8.9 -8.4 -7.7 31.3 31.8 32.2 32.6 33.0 33.4 33.7 34.1 34.4 34.7 35.1 35.4 35.6 36.0 36.2 36.6 37.1 37.5 37.8 38.2 38.8 39.2 39.6 40.1 40.5 40.9 41.4 41.7 42.0 42.3 42.6 42.8 42.9 43.2 43.4 43.6 43.7 43.8 43.9 44.0 44.2 44.3 28.2 28.7 29.1 29.4 29.7 30.1 30.4 30.7 31.0 31.3 31.6 31.8 32.0 32.1 32.3 32.5 32.7 32.8 33.0 33.2 33.3 33.5 33.7 33.8 33.9 34.0 34.0 34.1 34.1 34.2 34.2 34.3 34.4 34.5 34.6 34.7 34.8 34.9 34.9 35.0 35.0 35.1 -7.2 -6.7 -6.2 -5.8 -5.4 -5.0 -4.6 -4.3 -4.0 -3.7 -3.5 -3.2 -3.0 -2.9 -2.8 -2.6 -2.5 -2.3 -2.1 -2.0 -1.9 -1.8 -1.7 -1.6 -1.6 -1.5 -1.4 -1.4 -1.4 -1.3 -1.3 -1.3 -1.2 -1.1 -1.1 -1.1 -1.1 -1.0 -1.1 -1.1 -1.1 -1.2 44.5 44.5 44.6 44.7 44.9 45.0 45.1 45.1 45.2 45.3 45.4 45.5 45.7 45.8 45.9 46.0 46.1 46.2 46.3 46.5 46.6 46.7 46.8 46.9 47.0 47.1 47.2 47.3 47.4 47.6 47.8 47.9 48.1 48.2 48.2 48.4 48.5 48.6 48.7 48.9 49.0 49.1 35.1 35.1 35.1 35.1 35.0 35.0 34.9 34.9 34.8 34.7 34.7 34.5 34.4 34.3 34.3 34.2 34.2 34.2 34.1 34.0 33.9 33.8 33.8 33.7 33.6 33.6 33.6 33.5 33.5 33.4 33.4 33.4 33.3 33.3 33.3 33.3 33.2 33.2 33.2 33.1 33.2 33.1 -1.3 -1.4 -1.5 -1.6 -1.8 -1.9 -2.0 -2.1 -2.2 -2.3 -2.4 -2.6 -2.7 -2.7 -2.7 -2.8 -2.8 -2.9 -3.0 -3.0 -3.1 -3.2 -3.3 -3.3 -3.4 -3.3 -3.4 -3.4 -3.5 -3.5 -3.6 -3.6 -3.7 -3.7 -3.8 -3.8 -3.8 -3.9 -3.9 -3.9 -3.8 -3.8 49.3 49.4 49.5 49.6 49.7 49.8 50.0 50.1 50.2 50.2 50.3 50.4 50.5 50.6 50.7 50.8 51.0 51.0 51.1 51.2 51.3 51.4 51.5 51.6 51.8 51.8 51.9 52.0 52.2 52.3 52.4 52.5 52.6 52.7 52.8 52.9 53.0 53.1 53.1 53.2 53.3 53.5 33.1 33.1 33.2 33.2 33.2 33.1 33.1 33.1 33.0 33.0 32.9 32.9 32.9 32.9 32.9 32.8 32.8 32.8 32.8 32.8 32.9 32.8 32.8 32.8 32.8 32.7 32.7 32.7 32.7 32.7 32.7 32.8 32.8 32.8 32.8 32.8 32.7 32.7 32.7 32.6 32.6 32.7 -3.7 -3.7 -3.7 -3.7 -3.8 -3.9 -4.0 -4.0 -4.0 -4.0 -4.0 -4.0 -4.0 -4.1 -4.0 -4.0 -4.1 -4.2 -4.2 -4.2 -4.3 -4.3 -4.3 -4.4 -4.4 -4.4 -4.4 -4.3 -4.2 -4.2 -4.1 -4.1 -4.1 -4.2 -4.2 -4.2 -4.2 -4.3 -4.3 -4.3 -4.3 -4.3 53.6 53.6 53.8 53.9 54.0 54.1 54.2 54.2 54.3 54.4 54.5 54.6 54.8 54.8 54.9 55.1 55.2 55.3 55.4 55.5 55.5 55.6 55.6 55.8 55.9 56.0 56.1 56.3 56.4 56.4 56.5 56.6 56.7 56.8 57.0 57.0 57.1 57.3 57.4 57.6 57.8 57.9 32.7 32.8 32.7 32.7 32.7 32.7 32.7 32.6 32.4 32.2 32.3 32.3 32.5 32.6 32.8 33.0 33.2 33.3 33.5 33.7 33.8 34.0 34.2 34.2 34.3 34.5 34.5 34.5 34.6 34.6 34.5 34.5 34.5 34.5 34.6 34.6 34.7 35.0 35.2 35.3 35.4 35.6 -4.2 -4.1 -4.1 -4.2 -4.2 -4.3 -4.3 -4.3 -4.2 -4.2 -4.1 -4.1 -4.2 -4.2 -4.3 -4.3 -4.4 -4.4 -4.5 -4.5 -4.6 -4.6 -4.7 -4.7 -4.8 -4.8 -4.8 -4.9 -4.9 -4.9 -5.0 -5.0 -5.0 -4.9 -4.8 -4.5 -4.4 -4.3 -4.2 -4.1 -4.0 -4.0 58.0 58.1 58.2 58.3 58.4 58.4 58.6 58.6 58.8 58.9 58.9 59.0 59.1 59.1 59.2 59.2 59.4 59.5 59.6 59.7 59.8 59.9 60.0 60.0 60.1 60.2 60.4 60.5 60.5 60.6 60.6 60.7 60.8 60.9 60.9 60.9 61.0 61.0 61.1 61.3 61.3 61.4 35.7 35.8 35.9 36.0 36.0 36.1 36.2 36.2 36.3 36.3 36.4 36.5 36.5 36.6 36.6 36.7 36.8 36.9 36.9 36.9 37.0 37.1 37.1 37.1 37.2 37.2 37.2 37.3 37.3 37.4 37.4 37.4 37.4 37.4 37.5 37.5 37.5 37.6 37.6 37.7 37.9 37.9 -4.0 -4.0 -4.1 -4.1 -4.2 -4.2 -4.2 -4.2 -4.3 -4.3 -4.4 -4.4 -4.4 -4.4 -4.3 -4.4 -4.4 -4.4 -4.4 -4.5 -4.5 -4.6 -4.7 -4.7 -4.7 -4.7 -4.7 -4.7 -4.7 -4.7 -4.8 -4.8 -4.9 -4.9 -4.9 -4.9 -5.0 -5.0 -5.0 -5.0 -5.1 -5.1 61.5 61.6 61.7 61.8 61.9 62.0 62.0 62.2 62.3 62.3 62.4 62.5 62.6 62.6 62.7 62.8 63.0 63.1 63.1 63.1 63.2 63.2 63.2 63.3 63.3 63.4 63.5 63.6 63.6 63.7 63.8 63.9 64.0 64.1 64.2 64.3 64.3 64.4 64.3 64.2 64.4 64.6 37.9 38.0 38.0 38.1 38.1 38.2 38.2 38.2 38.2 38.2 38.2 38.3 38.3 38.4 38.4 38.3 38.4 38.6 38.6 38.6 38.7 38.7 38.7 38.7 38.8 38.9 38.9 38.9 38.8 38.9 38.9 39.0 39.0 39.0 39.0 38.9 38.8 38.6 38.4 38.3 38.4 38.4 -5.1 -5.1 -5.2 -5.2 -5.3 -5.3 -5.3 -5.3 -5.4 -5.4 -5.5 -5.5 -5.5 -5.4 -5.4 -5.4 -5.4 -5.5 -5.5 -5.6 -5.6 -5.7 -5.7 -5.8 -5.8 -5.8 -5.8 -5.9 -5.8 -5.8 -5.9 -5.9 -5.9 -5.9 -6.0 -6.1 -6.1 -6.1 -6.0 -6.1 -6.2 -6.2 64.7 64.8 64.8 64.9 65.0 65.1 65.1 65.2 65.2 65.3 65.4 65.4 65.5 65.6 65.7 65.8 65.8 65.9 65.9 64.7 63.2 61.6 59.5 57.9 56.5 54.8 53.5 52.5 38.4 38.4 38.5 38.5 38.5 38.4 38.4 38.4 38.4 38.4 38.4 38.5 38.5 38.4 38.4 38.4 38.4 38.4 38.3 37.8 36.1 34.7 33.6 32.6 32.0 31.5 31.0 30.6 -6.2 -6.2 -6.2 -6.2 -6.3 -6.3 -6.4 -6.5 -6.6 -6.6 -6.6 -6.5 -6.5 -6.5 -6.6 -6.7 -6.7 -6.8 -6.4 -5.3 -3.7 -2.9 -2.2 -1.6 -1.2 -0.9 -0.5 0.1 Low Gauge Pressure, P LOW High Gauge Pressure, P HIGH (bar) (bar) --- --3.47 3.47 3.47 3.47 3.47 3.47 3.47 3.47 3.47 3.47 3.47 3.47 2.39 1.46 0.87 0.59 0.37 0.21 0.15 0.18 0.19 0.26 0.35 0.43 0.52 0.58 0.65 0.74 0.83 0.91 0.97 1.02 1.07 1.12 1.17 3.47 3.47 3.47 3.47 3.47 3.47 3.47 3.47 3.47 3.47 3.47 3.47 5.25 5.76 5.89 5.97 5.94 5.89 5.87 5.89 5.89 5.93 5.99 6.06 6.13 6.21 6.30 6.41 6.51 6.61 6.72 6.84 6.95 7.05 7.14 1.21 1.26 1.29 1.32 1.36 1.39 1.41 1.44 1.46 1.49 1.50 1.52 1.53 1.54 1.55 1.57 1.59 1.60 1.60 1.61 1.63 1.63 1.64 1.64 1.65 1.64 1.65 1.65 1.66 1.66 1.66 1.68 1.67 1.68 1.67 1.68 1.67 1.67 1.66 1.66 1.64 1.63 7.24 7.33 7.40 7.50 7.58 7.66 7.73 7.80 7.88 7.93 7.97 8.00 8.04 8.10 8.15 8.19 8.24 8.27 8.30 8.36 8.40 8.43 8.45 8.47 8.47 8.48 8.50 8.51 8.51 8.52 8.56 8.59 8.62 8.65 8.66 8.68 8.70 8.73 8.76 8.80 8.82 8.84 1.62 1.59 1.58 1.57 1.55 1.54 1.52 1.51 1.50 1.48 1.47 1.47 1.47 1.47 1.45 1.45 1.44 1.43 1.43 1.41 1.41 1.40 1.39 1.40 1.40 1.40 1.39 1.39 1.38 1.37 1.38 1.36 1.36 1.36 1.35 1.34 1.33 1.34 1.34 1.35 1.36 1.37 8.84 8.84 8.85 8.87 8.88 8.90 8.91 8.89 8.87 8.87 8.87 8.88 8.90 8.90 8.87 8.86 8.87 8.89 8.90 8.91 8.91 8.91 8.91 8.89 8.89 8.91 8.95 8.98 8.98 8.98 8.99 9.00 8.99 9.01 9.01 9.01 9.00 9.00 8.99 9.01 9.02 9.05 1.37 1.37 1.36 1.35 1.33 1.33 1.33 1.32 1.34 1.34 1.33 1.32 1.32 1.32 1.32 1.31 1.30 1.30 1.30 1.30 1.29 1.30 1.29 1.29 1.28 1.29 1.31 1.31 1.32 1.32 1.32 1.31 1.31 1.31 1.30 1.30 1.30 1.29 1.29 1.30 1.30 1.32 9.03 9.04 9.04 9.04 9.03 9.03 9.01 9.02 9.05 9.06 9.09 9.07 9.08 9.11 9.13 9.13 9.11 9.13 9.10 9.09 9.12 9.10 9.11 9.13 9.16 9.16 9.16 9.16 9.15 9.15 9.19 9.20 9.17 9.15 9.17 9.18 9.20 9.20 9.20 9.19 9.18 9.21 1.32 1.31 1.30 1.30 1.29 1.29 1.29 1.30 1.30 1.30 1.30 1.30 1.29 1.29 1.29 1.27 1.27 1.26 1.25 1.25 1.24 1.24 1.23 1.23 1.22 1.23 1.22 1.22 1.22 1.21 1.21 1.22 1.23 1.25 1.26 1.28 1.30 1.31 1.32 1.33 1.32 1.32 9.21 9.21 9.23 9.22 9.20 9.20 9.32 9.51 9.64 9.72 9.81 9.87 9.91 9.96 9.99 10.01 10.03 10.04 10.07 10.07 10.07 10.07 10.09 10.09 10.11 10.13 10.15 10.17 10.19 10.22 10.23 10.24 10.25 10.28 10.31 10.32 10.35 10.39 10.42 10.45 10.49 10.53 1.31 1.29 1.29 1.28 1.28 1.28 1.27 1.27 1.27 1.27 1.26 1.26 1.26 1.26 1.27 1.27 1.26 1.26 1.25 1.24 1.23 1.23 1.22 1.23 1.23 1.23 1.24 1.23 1.23 1.22 1.22 1.21 1.21 1.20 1.20 1.20 1.20 1.21 1.20 1.20 1.20 1.20 10.56 10.57 10.58 10.62 10.63 10.66 10.69 10.70 10.72 10.75 10.76 10.77 10.81 10.82 10.84 10.87 10.90 10.92 10.95 10.97 11.00 11.01 11.02 11.04 11.06 11.09 11.10 11.14 11.16 11.18 11.20 11.22 11.25 11.27 11.28 11.29 11.31 11.34 11.36 11.39 11.40 11.43 1.19 1.19 1.19 1.17 1.18 1.17 1.17 1.17 1.16 1.16 1.16 1.17 1.18 1.18 1.17 1.17 1.16 1.16 1.14 1.15 1.14 1.13 1.13 1.13 1.13 1.12 1.12 1.12 1.12 1.11 1.12 1.12 1.12 1.10 1.10 1.09 1.10 1.10 1.09 1.09 1.10 1.10 11.46 11.48 11.50 11.52 11.54 11.56 11.58 11.59 11.63 11.65 11.67 11.69 11.71 11.73 11.76 11.79 11.81 11.83 11.85 11.86 11.88 11.91 11.92 11.94 11.95 11.98 12.00 12.02 12.03 12.04 12.06 12.10 12.11 12.14 12.15 12.17 12.19 12.20 12.21 12.23 12.25 12.28 1.09 1.10 1.09 1.09 1.08 1.07 1.07 1.06 1.07 1.07 1.08 1.07 1.07 1.06 1.06 1.05 1.04 1.08 1.32 1.44 1.52 1.58 1.63 1.66 1.69 1.71 1.73 1.75 12.31 12.33 12.34 12.37 12.39 12.41 12.43 12.44 12.46 12.48 12.49 12.51 12.55 12.56 12.59 12.60 12.62 12.28 10.99 10.67 10.57 10.45 10.34 10.26 10.19 10.12 10.06 10.00 Water Inputs Hot Tank Water Temperature, T W1 Cold Water Tank Temperature, T W2 (°C) (°C) --- --19.3 19.3 19.3 19.2 19.3 19.3 19.3 19.3 19.3 19.3 19.3 19.3 19.3 19.3 19.3 19.4 19.4 19.5 19.5 19.6 19.6 19.7 19.6 19.6 19.7 19.7 19.7 19.7 19.7 19.8 19.8 19.9 19.9 19.9 20.0 19.0 19.1 19.0 19.0 19.1 19.1 19.0 19.1 19.1 19.1 19.1 19.0 19.0 19.0 19.2 19.2 19.2 19.2 19.2 19.2 19.2 19.2 19.2 19.2 19.2 19.2 19.2 19.2 19.2 19.2 19.2 19.2 19.2 19.2 19.3 20.0 20.0 20.1 20.2 20.2 20.2 20.2 20.3 20.3 20.4 20.4 20.5 20.5 20.6 20.7 20.9 21.0 21.1 21.2 21.2 21.3 21.3 21.4 21.4 21.5 21.6 21.7 21.9 21.9 21.9 21.9 22.0 22.1 22.1 22.1 22.3 22.3 22.4 22.4 22.4 22.5 22.5 19.2 19.2 19.2 19.2 19.2 19.1 19.1 19.0 18.9 18.9 18.9 18.9 18.7 18.7 18.7 18.7 18.6 18.5 18.4 18.4 18.3 18.0 17.8 17.8 17.8 17.7 17.7 17.7 17.6 17.6 17.6 17.6 17.5 17.4 17.3 17.3 17.3 17.2 17.1 17.0 17.1 17.0 22.5 22.6 22.6 22.7 22.8 22.8 22.9 23.0 23.1 23.2 23.2 23.3 23.3 23.3 23.3 23.4 23.5 23.6 23.8 23.9 23.8 23.8 23.9 23.9 23.9 23.9 23.8 23.9 23.9 24.0 24.0 24.0 24.1 2 ...
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Final Answer

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RESULTS

ABSTRACT
Refrigeration is well designed and systematic process of expelling heat energy from a substance
which requires be cooled. The objective of this experiment is to investigate the influence of
variation of the pressure on heat transfer characteristics and performance of refrigeration based
on the fluid-flow through the vapor compression refrigeration system.

RESULTS
At Condition 1
Temperature of the cold space= Tc= 14.9 oC
Temperature of the hot space= TH= 25.5 oC
Change in Tevap=1.6— -4.1= 5.7 oC
Change in Tcond=52.6-32.8=19.8 oC
Tsh– 7.86 oC
Tsc– 7.25 oC

Pevap– evaporator pressure is minimum gauge pressure = 1.31 bars
Pcond– condenser pressure is maximum gauge p...

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