Comments by "Joe R M" (@joermnyc) on "Being a Zamboni driver for a day!" video.

  1. The ammonia is used as an industrial refrigerant, it’s highly efficient and low cost, but it’s toxicity and corrosive tendencies on certain materials limit where it can be used… but the International Space Station uses it to keep the station comfortable (it’s designed so any leaks vent out into space.)
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