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.
If you want much larger, as for a community, perhaps a yakhchal?
yakhchals have a history of functioning so while i will likely try to build a model version someday if i added a shallow cooling pool like the real ones im sure it would work better, like the originals. The solar thermal ventilation and iceball were a matter of curiosity i doubt they would be much help unless i modified them into a solar dryer system like pauls and i would need to add more iceballs if i wanted to have anything more than a minor effect on the temperature. Though it would also likely be important to have a cooled water supply from a mountain stream and some shallow artificial glaciers for seasonal fish farming and ice to help cool the system. The system was originally made in a high altitude rainy area as well if that gives you a better idea of how they worked. Im also curious if a funnel shaped wind catcher like those used for wind turbines would be able to focus the wind enough to cool the system via lowering the air pressure a bit more. To be honest these posts are largely a matter of curiosity for the limitations of such a system and how one can make them function in less than optimal conditions
Orin Raichart wrote: My approach is to put all the cold in one area and all the hot in another area with great insulation between. Rather pointing out the issues with your diagram, I encourage you to build a model or just one of these full size devices. In this manner, you will learn the difference between theory and real time heat energy (if you pay attention). Then make changes to your system or model so you can notice what variables produce what so you can understand how. Good luck.
Nathanael Szobody wrote:
Julia Winter wrote:I am eagerly looking forward to seeing pictures of that gorgeous pit garden (I think even the circular walls are beautiful) after there have been some rains!
I want to second the request for regular pictures taken from the same location. Humans respond well to "before" and "after" pictures. Taking the picture on the same calendar day every year, or like you said previously, every 6 months.
I'm on it!
One problem: I'm not there right now. It's rainy season right now and all roads to our place are flooded. This is normal for this time of year, so I camp out in the capital and do other stuff. Like gardening. Some people still manage to drive there in this season. It can take anywhere from 24 hours to four days to get there--200 miles. You go for a bit, get stuck. Everybody gets out and pushes. Drive a little more, repeat. That's not my cup of tea, so I sit tight in the capital until late October when the "roads" are normally drive-able... and it only takes 7 hours to go 200 miles.
No worries though. My colleague has assured me that he is taking pictures for me. It should be very lush right now. Between July and October we get 32 inches of rain, so it should be pretty. Right now in August is the height of it. It can rain everyday for a week or more. Try picturing that compared to the photos I've posted above!
So come October I should have some pics to post...Thanks for following!
james buttler wrote:
I like your tool that picks the fruit I am wanting to setup a large commercial farm though and I am trying to figure out how I would manage a farm if it was to be run as a permaculture farm. Hand picking 100 trees myself would be one hell of a chore for little return considering the sale price of apples.