A3 pure refrigerants that are a single molecule are R-290 (propane), R-600 (butane), R-600a (isobutane), and R-601A (isopentane). All are hydrocarbons. For many years now, technicians have been using ...

In the late 1980s, those of us of a certain age became familiar with an international agreement called the Montreal Protocol. The goal of this agreement was the phaseout of ozone-depleting ...

Think propane and butane are just for barbecuing? Think again: The common cooking fuels can also chill your drinks and ice cream with less energy and almost none of the global warming worries of ...