The Heat Pump – What It Is, What it Does, and What it May Do Someday
SINCE DECEMBER 1852, when Lord Kelvin presented before the Glasgow Philosophical Society a modest little paper, “On the Economy of the Heating or Cooling of Buildings by Means of Currents of Air,” the Heat Pump has been a prime target for technical writers. In fact, for most of the 96 years since Kelvin’s article, there have been more papers on the subject than there were heat pumps in operation. (A bibliography listing 160 references was published by the Southern Research Institute in 1946.) Recently, however, a number of experimenters and manufacturers have made efforts to equalize the disparity. In California, for instance, there are over 100 heat pumps now In use.