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TABLE OF FIGURES Figure 1 schematic l diagram of water heating up process in a transcritical refrigeration cycle and a conventional refrigeration cycle [2] ....................................................................................10 Figure 2. Size of the heat pump outdoor unit................................................................................12 Figure 3. Schematic layout of the heat pump outdoor unit...........................................................13 Figure 4. Section view of the evaporator’s freezing protection circuit ........................................13 Figure 5. Gas cooler design...........................................................................................................14 Figure 6. Sketch of the Sanyo compressor [3]..............................................................................14 Figure 7. Size of Sanyo indoor tank ...............................................................................................15 Figure 8 Layout of tank inside .......................................................................................................16 Figure 9. Program operation window (from ClimaCheck)............................................................17 Figure 10. Schematic layout of testing measuring points .............................................................18 Figure 11. COP1 vs. Water inlet temperature to the gas cooler at 7 °C outdoor temperature (comment the funnyp patterns).......................................................................................................20 Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure Figure with radiator load) .........................................................................................................................37 Figure 30. Tank temperature distributions during defrosting period (electric heater at off-mode, no radiator load) ............................................................................................................................37 Figure 31. Schematic layout of tank modification .........................................................................40 Figure 32. Schematic layout of tank modification 1 ......................................................................41 Figure 33 . Pretest results at 5°C outdoor temperature ................................................................43 Figure 34. Pretest results at 0°C outdoor temperature .................................................................43 Figure 35. Pretest results at -5 °C outdoor temperature ...............................................................44 Figure 36. Pretest results at - 10 °C outdoor temperature ............................................................44 Figure 37. Defrosting test at -6°C at position 1.............................................................................45 Figure 38. Defrosting test at 2°C at position 2..............................................................................45 Figure 39. Ice layer built up on evaporator fin with boiler placed at position 2 ..........................46 12. Example of test results at +7 °C outdoor temperature ................................................22 13. COP vs. water inlet temperatures for different outdoor temperatures. .......................23 14. Test rig layout of system testing. ..................................................................................24 15 Heat pump performances at different heating loads at 0°C outdoor temperature .......25 16 Heat pump performances at different heating loads at -5°C outdoor temperature ......26 17 Heat pump performances at different heating loads at -10°C outdoor temperature ....26 18 Heat pump performances at different heating loads at -12°C outdoor temperature ....27 19. Radiator inlet temperature vs. outdoor temperature....................................................28 20. Schematic layouts of the defrosting test facilities in the climate chamber ................... 30 21. Example of evaporator’s fin before defrosting (pos.1) ................................................31 22. Example of evaporator’s fin after defrosting (pos 1)...................................................31 23. Testing results of frequent defrosting (position 1) .......................................................32 24. Comparison of outer and inner evaporator plates at the same time............................33 25. Amplified testing results of Figure 23 ..........................................................................33 26, Layout of the thermocouple position in water tank testing ..........................................34 27. Heating up of a cold tank with electric heater at off-mode..........................................35 28. Heating up of a cold tank with the electric heater at on-mode ....................................36 29. Tank temperature distributions during defrosting period (electric heater at off-mode, 4PDF Image | CO2 heat pumps for the Swedish market
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CO2 Organic Rankine Cycle Experimenter Platform The supercritical CO2 phase change system is both a heat pump and organic rankine cycle which can be used for those purposes and as a supercritical extractor for advanced subcritical and supercritical extraction technology. Uses include producing nanoparticles, precious metal CO2 extraction, lithium battery recycling, and other applications... More Info
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