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4 – Test Rig Design and Experimental Methods The rotational speed, and with that the heating capacity of the Sanyo compressor, was controlled by a tailor-made AC inverter from Sanyo. The specifications of the prototype compressor are presented in Table 4.2. Table 4.2 Specifications for the rolling piston compressor (prototype). Compressor Type: Operating range: Displacement volume: Swept volume: Max. operating pressure: Max. discharge temperature: Motor Type: Maximum power input: Lubricant Type: Viscosity: Properties: Oil discharge: Hermetic two-stage rolling piston unit Operated as a single-stage unit (LP + HP) 1800 to 7200 rpm (30 to 120 Hz) 3.33 cm3/rev (LP) and 1.88 cm3/rev (HP) 1.439 m3/h at 7200 rpm 14 MPa 125oC at continuous operation Digitally controlled brushless motor – 4 poles 2500 W Polyalkylene glycol (PAG) 100 cSt - Non-soluble with CO2 - Heavier than saturated CO2 liquid above -15°C - Excellent thermal and chemical stability - High viscosity index - High flash point – low pour point - Hygroscopic - Approximately 6 to 9% of total mass flow rate (100 Hz). Oil discharge rate increases with rpm and lower suction/discharge pressure (Hubacher and Groll, 2002) Figure 4.6 shows the principle compressor arrangement with gas flows at suction pressure, intermediate pressure and discharge pressure. 73PDF Image | Residential CO2 Heat Pump System for Combined
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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
Heat Pumps CO2 ORC Heat Pump System Platform More Info
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