Jeff Bou

C. Letellier wrote:You might want to look at systems like this.  I can't find a link for the older one that was easily buildable with no moving parts but here is a newer version.

solar ice maker.

Bit of a necropost, but would anyone be interested is a kickstarter to build a solar powered ice maker based on parabolic mirror and ammonia absorption (zero energy operation)?  I simply don't have time/space to build and validate but want to build one of these for our off-grid retirement place in the Philippines in a few years.  If anyone is intereted, I'd be will to do something like match any pledges dollar to dollar up to an amount that should allow this to be built.  I want someone publically committed but am willing to fund a good bit if the results are a validated build, instructions, some YouTube videos, etc that would be public domain when complete.

Anyone interested?

PS - I reached out to ISAAC and did not get a response.  Their web page is there but doesn't look to have been updated for around 2 years.  I also did a Way Back machine search for a great article on this topic (below).  Finally, there is a great construction blog on easy construction of a parabolic solar array (https://georgesworkshop.blogspot.com/2012/08/diy-solar-parabolic-trough-20-intro.html)

I've used (something similar to) these in very windy Hong Kong.  Not perfect, but they definitely extended the life of a weak / low quality tarp.  I as some else mentioned, you can fold tarp over a board (I used wooden chop sticks with these) and it extends the tension out from the jaw quite a bit.  I haven't used these exact ones (these actually look pretty cheap) and just picked as an example.  The ones I purchased had the saw teeth and clamp opening was adjustable and appeared to be a good be more robust.
https://www.amazon.com/dp/B08HN7KR5P/ref=sspa_dk_detail_0?pd_rd_i=B08HN7KR5P&pd_rd_w=e0jmT&content-id=amzn1.sym.386c274b-4bfe-4421-9052-a1a56db557ab&pf_rd_p=386c274b-4bfe-4421-9052-a1a56db557ab&pf_rd_r=T7TXWJS2JX92T636JXHK&pd_rd_wg=qIF5d&pd_rd_r=ad44e873-19cb-4a65-92b2-a39fe6c570a3&s=hi&sp_csd=d2lkZ2V0TmFtZT1zcF9kZXRhaWxfdGhlbWF0aWM&th=1

Can someone help me ... I'm trying here.  I simply cannot understand what happens between step 6 and step 7.  Step 7 clearly shows that all flow from the rocket stove riser is completely blocked from the cook top.  I just can't visualize the actual gas flow since all the pictures show a circular / semi-circular brick wrap around the pot which would block flow to the gas top.  I see how the flow gets to the pot, but flow beyond that point is very unclear ... how does the heated gas get to the stove top, how does it flow within the stove top chamber and then how does it get to the exhaust?  I can make guesses but the book clearly shows all flows being blocked so I'd just be guessing.  Can anyone help clarify?

Randi Arc wrote:More photos

Please keep posting ... love it.  I spent a year in Cebu and wife and I are looking for our retirement farm now in Cebu, Bohol and Palawan.  Your pics are inspiring.

See Hes wrote:
Because I want the our housemaid and her boyfriend taking over the trade of our products he is fully into this idea, especially after I designed the Aquaponics System for Red Claw Crayfish (and proved that it works) and now Capybaras. That gets us standing well off the crowd..

Will & See, are you interested in providing any information on your Crayfish system?  We're shopping land in Philippines now and plan to do something similar to you but with more focus on small resort with adjacent permaculture.  I'd like to include crayfish.  I likely won't have enough land for a large lake at the "resort" (we're looking at 5,000-8,000m total land), but we also only need enough to feed ourselves and a small number of guests.  I'll likely purchase small farm near by for sugarcane, bamboo, bananas, cassava, etc.  I'm trying to figure out if can multilayer IBC tank grow or if I would need 4 rice fields and rotate so I can get full 3 year growth on the crawfish (plus a little rice).

I have experience with small scale 2 IBC aquaponics system Koi and ran a hydroponics system off of the aquaponics water as well, but was really just experimenting to get some experience.  Would love to see what you did, how it worked and get any "lessons learned" you'd be willing to share regarding crayfish.

Jeff