sulphur hexafluoride การใช้

• :A gas with low ionisation energy is good-such as Xenon, or maybe sulphur hexafluoride ..
• Modern devices use Sulphur Hexafluoride at high pressure in a nozzle flow between separated electrodes within a pressure vessel.
• The six Kyoto Protocol GHGs are covered ( carbon dioxide, methane, nitrous oxide, sulphur hexafluoride, hydrofluorocarbons and perfluorocarbons ).
• Negotiations on reduction of three other GHG-hydrofluorocarbons, perfluorocarbons and sulphur hexafluoride-will only start next year in Buenos Aires at the forth conference of parties.
• One can get double glassing filled with sulphur hexafluoride and though it is less expensive than brick walls, it may again not be practical but worth looking at.
• Let's go to extremes, the gas Sulphur Hexafluoride is heavy enough to float a boat ( sort of ), as can be seen here in this demo ..
• Another mechanism is sidewall passivation : SiO x F y functional groups ( which originate from sulphur hexafluoride and oxygen etch gases ) condense on the sidewalls, and protect them from lateral etching.
• The dam's underground powerhouse was the second largest in the world at the time of its construction, and was the first 500 kV installation of sulphur hexafluoride ( SF 6 ) insulated switchgear in the world.
• HFCs are potent greenhouse gases and are facing calls for stricter international regulation and phase out schedules as a fast-acting greenhouse emission abatement measure, as are perfluorocarbons ( PFCs ), and sulphur hexafluoride ( SF 6 ).
• Leaving out the other three-- hydrofluorocarbons, or HFCs, perfluorocarbons and sulphur hexafluoride-- would be a reprieve for the chemical companies that manufacture them, such as ICI Plc of the U . K . and DuPont & Co . of the U . S.
• Leaving out the other three-- hydrofluorocarbons, or HFCs, perfluorocarbons and sulphur hexafluoride-- would be a reprieve for the chemical companies that manufacture them, such as ICI Plc of the U . K . and DuPont & AMP; Co . of the U . S.
• Under the Protocol, 37 countries ( " Annex I countries " ) commit themselves to a reduction of four greenhouse gases ( GHG ) ( carbon dioxide, methane, nitrous oxide, sulphur hexafluoride ) and two groups of gases ( hydrofluorocarbons and perfluorocarbons ) produced by them, and all member countries give general commitments.
• Consider sulphur hexafluoride glazing or a builders 6 inch thick slab of expanded polystyrene behind the window ( " who needs daylight when you're playing a 2 am ? " ) and a portable air conditioner to take away the heat ( " when your drummer gets going he will be pumping out lots of heat, believe me " ).
• The term " "'climate neutral "'" reflects the broader inclusiveness of other greenhouse gases in climate change, even if CO 2 is the most abundant, encompassing other greenhouse gases regulated by the Kyoto Protocol, namely : methane ( CH 4 ), nitrous oxide ( N 2 O ), hydrofluorocarbons ( HFC ), perfluorocarbons ( PFC ), and sulphur hexafluoride ( SF 6 ).
• A climate footprint is a measure of the total amount of carbon dioxide ( CO 2 ), methane ( CH 4 ), nitrous oxide ( N 2 O ), perfluorocarbons ( PFCs ) and sulphur hexafluoride ( SF 6 ) emissions of a defined population, system or activity, considering all relevant sources, sinks and storage within the spatial and temporal boundary of the population, system or activity of interest.