Darren Tasker wrote:
We are slowly adding swales, ah... but for a few hours with their digger! We are engaging and hope they will have more interest in the future We will continue to persist, bribing with lovely jam and chutney from the garden, to over come our outsider city folk tag with a "play farm".
craig howard wrote: Is this the process they use for propane camper refrigerators?
I think they are full of ammonia.
Catherine Windrose wrote:Possibly a zeer pot or similar? India and other areas use smaller versions, but much larger ones are possible. This is also on my experimental 'to do' list.
https://www.youtube.com/watch?v=enOjVc-kN7Q
If you want much larger, as for a community, perhaps a yakhchal?
http://www.historyofrefrigeration.com/refrigeration-history/yakhchal-ancient-refrigerator/