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Tag: A3
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Video on flammability of A2L and A3 refrigerants
Chemical company Chemours has released a video titled Hydrocarbons: The Burning Truth, which looks at differences in flammability between A2L and A3 refrigerants. The video features Dr Scott Davis, CEO of Gexcon US, who explains the parameters impacting refrigerant flammability. These include how much of a gas is required for an ignition event to occur […]
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Vote imminent on flammable standard
The votes are set to be counted on an updated international safety standard that would allow increased charge sizes of flammable refrigerants in household air conditioners, heat pumps and dehumidifiers. The proposal has sparked discussion in the world of HVAC&R. Although it would apply to A2, A2L and A3 refrigerants, the proposal has been framed […]
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Flammable charge limits on the move again
Charge sizes for flammable refrigerants in HVAC&R equipment are changing with a proposal to raise international limits for room air conditioners, and the adoption of a new standard in Australia for refrigeration appliances. An International Electrotechnical Commission (IEC) working group has released a proposal to update safety standard IEC 60335-2-40. This would allow larger amounts […]
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Advice on flammables
Asercom, the European refrigeration and air conditioning components manufacturers group, has published a guide for the safe handling of components used in compression refrigeration circuits with flammable refrigerants. “The component manufacturers organised in Asercom have noticed a high degree of uncertainty among refrigeration and air conditioning specialists when dealing with flammable refrigerants,” says Asercom president […]
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How flammable is ‘mildly flammable’?
A multi-million-dollar research project led by AHRI, with support from ASHRAE, the US Department of Energy and the California Air Resources Board, has comprehensively tested refrigerants to answer questions around their flammability. In Australia, the topic continues to provoke debate, and understandably so. Because of the HFC phase-down, previously common non-flammable A1 refrigerants are giving way […]
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Charge limit increase imminent
The International Electrotechnical Commission (IEC) has taken the next step towards increasing the charge limit of A3 refrigerants in commercial refrigeration equipment. As reported earlier this year, the change would increase the limit on A3 (flammable) refrigerants such as propane in commercial refrigeration equipment from 150g to 500g. This would enable hydrocarbons to be used […]