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Showing 1 to 3 of 3 for “"Transcritical R744"”.
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Experimental and Analytical Investigation of a Two-Phase Ejector Used for Expansion Work Recovery in a Transcritical R744 Air-Conditioning System
… represent an inherent drawback of the transcritical carbon dioxide (CO2, R744) refrigeration cycle, the supercritical heat rejection pressure can be used to maximize the system performance. In addition, large throttling losses make R744 a suitable fluid for expansion work recovery. This …
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Potentials for COP increase in vapor compression systems
… and numerically investigated for R410A and transcritical R744. Experiments were carried out in a limited range of operating conditions but an experimentally validated model was used to extrapolate trends. As the relative size of the HXs was increased, a maximum COP of 9.5 (without fans …
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Vortex control of two-phase refrigerant flow in nozzles and its application in ejector vapor compression cycles
… Finally, the influence of vortex control on transcritical R744 ejector and cycle performance has been experimentally investigated. Vortex control was applied to ejectors with different geometric parameters. The performance of ejector and ejector cycle with vortex control was compared with …