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The scientists developed nanoscale copper wires with specially shaped surfaces to catalyze a chemical reaction that reduces greenhouse gas emissions while generating ethylene — a valuable chemical simultaneously.
When replacing R-410A, engineers should consider commercially available, single-component, or azeotrope refrigerants that meet AHRI Standard 700 with zero ODP and a maximum 750 GWP.
Hydrofluorocarbons (HFCs), as the name suggests, are compounds containing hydrogen, fluorine, and carbon. They are used for residential and commercial heating, ventilation, and air conditioning (HVAC) as refrigerants, by firefighters as a fire suppressant, and in aerosols as propellants.
For Chicago, the best-case scenario is that electricity use increases by 12% and water use increases by 4% if global warming crosses a 1.5°C threshold. But if a 2.0°C threshold is reached, then the worst-case scenario is a 20% increase in electricity use and a 6% increase in water use.