Win a copy of 5 Acres & a Dream this week in the Homestead forum!
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
permaculture forums growies critters building homesteading energy monies kitchen purity ungarbage community wilderness fiber arts art permaculture artisans regional education skip experiences global resources the cider press projects digital market permies.com private forums all forums
this forum made possible by our volunteer staff, including ...
master stewards:
  • Nicole Alderman
  • Anne Miller
  • Pearl Sutton
  • r ranson
  • Mike Haasl
  • James Freyr
stewards:
  • paul wheaton
  • Joylynn Hardesty
  • Burra Maluca
garden masters:
  • Steve Thorn
  • Greg Martin
gardeners:
  • Kate Downham
  • Jay Angler
  • thomas rubino

Building a cave in subtropical Africa ?

 
Posts: 18
Location: Bamako, Mali
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Hi everyone,

I heard that deep enough, the temperature of the soil is the same everywhere :
Would a cave be useful in subtropical Africa ?

Living actually in Mali I am looking for options to safely store things like onions. I was wondering if a cave might be possible ?  

Thanks for your help,

Eli
 
pollinator
Posts: 447
Location: France, Burgundy, parc naturel Morvan
159
forest garden fish fungi trees food preservation cooking solar wood heat woodworking homestead
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Interesting question. I've seen man made caves  in Finland, where they had them against animals, frost in winter and heat in summer. And we have them in France for cooling wine. Of what i understood the underground temperature is stable because of the insulation the ground offers, but is still dependent on the seasonal differences and average temperature year round. So it will be cooler underground during a heat spell, but warm during a colder period.You could dig a hole and measure or look for a cave on hikes and pull out the thermometer.
Or check this link out, they're cooling onions!. Low tech refrigerating is the search term i used.
https://news.nationalgeographic.com/2016/12/mohammed-bah-abba-explorer-moments-cooling-technology-helping-Africans/
 
Eli Sinayoko
Posts: 18
Location: Bamako, Mali
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Hi Hugo,

The link is very inspiring, I will try this technology as soon as possible!

Thanks for the tip,

Eli

 
pollinator
Posts: 432
Location: Upstate SC
45
  • Likes 1
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
Cave temperature (and the temperature of spring water coming out of the ground) is the average temperature of the region.  This temperature can be below freezing in parts of northern Canada to room temperature in tropical regions.  Caves and root cellars are especially useful for food storage in regions with a seasonal temperature change where the cave temperature is frostfree and in a range  conducive  for food storage. Cave humidity can vary depending on the outside relative humidity, how much cooler the cave temperature is below outside air temperature, and how much water is dripping in the cave.  The main advantage of a cave for food storage in tropical regions is that it provides a stable temperature and humidity compared to an above ground room.
 
Hugo Morvan
pollinator
Posts: 447
Location: France, Burgundy, parc naturel Morvan
159
forest garden fish fungi trees food preservation cooking solar wood heat woodworking homestead
  • Mark post as helpful
  • send pies
  • Quote
  • Report post to moderator
I was wondering if chives wouldn't grow all year round in a tropical climate? It's not the same as onions for sure, but maybe easier? And i got this Chinese garlic growing, grows like chives, just cut some leaves and add to a salad, it's lovely.
There are lots of things i can't grow here in France, and people are dragging food all over the world. I try to be conscious about that when shopping and look for local substitutes.
 
Story like this gets better after being told a few times. Or maybe it's just a tiny ad:
2020 Permaculture Design Course for Scientists and Engineers, June 14-27
https://permies.com/wiki/permaculture-design-course-2020
  • Post Reply Bookmark Topic Watch Topic
  • New Topic
Boost this thread!