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A comment on Ask HN: What's a promising area to work on?. Parent comment

Re:Ask HN: What's a promising area to work on? by opencl on Tuesday October 22, 2019 @07:38PM (#21329601)
HFCs are already being phased out in favor of HFOs (though you could certainly argue that this should be happening more quickly), is there a strong reason to go for ammonia based systems over HFO?
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Re:Ask HN: What's a promising area to work on? by ncmncm on Wednesday October 23, 2019 @04:53PM (#21338890)
Thank you, the atmospheric half-life of HFOs is short enough to make it a viable alternative to ammonia as a refrigerant. However, the existing stocks of HFCs, in installed systems, is enough to match, if vented, the heating from all the CO2 currently in the atmosphere.
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