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REAL Alternatives Module 2 Design Differences for Alternative Refrigerants | 19 R717 is toxic and has a very low practical limit (0.00035 kg/m3). Fixed leak detection should be used if a leak can result in a concentration exceeding this. The low level should be set at 500 ppm and should activate mechanical ventilation and a supervised audible alarm. The high level should be set at 30,000 ppm and should stop the plant and isolate electrics. Low charge R717 systems are being developed for use in commercial systems which would traditionally have used HFCs. See Ammonia system video in REAL Alternatives e‐libraryPDF Image | Alternative Refrigerants
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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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