"Johny B Good" wrote in message
...
On Sat, 12 Apr 2014 08:52:35 +0100, "harryagain"
wrote:


"Vir Campestris" wrote in message
news:7bednd9RLthdmNrOnZ2dnUVZ8kSdnZ2d@brightview .co.uk...
On 09/04/2014 23:00, Tim Streater wrote:
One
was about the Norwich Heat Pump, about which I've never since seen a
reference.

http://archive.spectator.co.uk/article/5th-march-1948/11/the-heat-pump

Interesting read - but mostly because it was so long ago.

Andy

Amazing it never caught on back then.
More expensive than a coal fired boiler I expect.


If this ancient tech (counting in "PC Years") had taken off way back
then, just imagine the size of the hole in the Ozone Layer when it was
finally spotted from the satellite data!

They were probably using sulphur dioxode or ammonia as a refrigerant gas
back then.
It was in the late 19th century commercial refrigeration came in.
Then it was used on ships for transporting meat.