01%, effectively preserve these packaged foods without the need for preservatives or additives and without the need for vacuum sealing.
. We have some really great 'techy' type guys here who are, as they have been exploring the FD mechanics and sharing that in their posts, writing what is turning out to be a 'troubleshooting manual' for us less capable folks.
Be wary of buying freeze-dryers that come from locations where the unit could have been tampered with or damaged, even by accident.
The only way I know to filter the water vapor out would be a cold trap. They usually use liquid nitrogen or dry ice to keep the temperature low enough that all the water condenses out. Obviously you would need a supply of the liquid nitrogen or dry ice that would probably not be cost effective for most of us. The other option to get that cold would be to use a cryocooler and build a cold trap around it. It could be done, but would be pretty expensive. I've been watching some electronics on ebay that have cryocoolers in them, but the cheapest I've seen is around $600. Still not a cheap option, but you wouldn't need dry ice or liquid nitrogen to feed it.
14 Posted December 16, 2015 On 7/31/2015 at 11:12 PM, TonyC said: Here is my first pass on a Vapor Trap... it is an old whole house water filter that I modified. It failed to reduce the moisture in the oil... I'm in the process of modifying it to catch and suspend the moisture in the container long enough for desiccant beads to absorb the water. The air flow comes into the inlet, down the central pipe to the bottom of the screen and filters up through the beads and out the top. I know this was like forever ago, but I thought I would respond anyway. I haven't been on much in a while, I only run my freeze get more info dryer in the winter. So I think you'll find it's a lot harder to remove water vapor from a vacuum than just using desiccant, as the vacuum will just pull the water out of the desiccant.
The bottom line regarding freeze-dried food is that hoe freeze dryers are an investment! An investment that pays you back and makes you more resilient in the process.
Whichever freeze dryer model you choose, be sure you’re getting it from a trustworthy source. The only place where you’re guaranteed complete satisfaction is the manufacturer’s store or their website, so that’s where I’d buy if it were up to me.
The proper methods of drying are one of these four methods: Air drying, sun drying, oven drying, or dehydration. Learn how to properly do each of these methods.
Maintains the integrity of pharmaceutical compounds, preserving their potency and efficacy over extended periods. Large Capacity
So the bottom line is this: If you can afford the money, space, and time to spend on freeze-drying your own food and you believe the need for the food is many months or years away, then eventually the Harvest Right freeze dryer will pay for itself.
The proper methods of drying are one of these four methods: Air drying, sun drying, oven drying, or dehydration. Learn how to properly do each of these methods.
Dehydrators take the water off the surface first, then water eqilibrates with the surface, more water is drawn off the surface. You are left with a shrunken item, with some residual water. Makes gorgeous leather.
As I mentioned before, freeze dryers are an investment. They're an investment because of all the benefits they bring to you and your self-reliance.
And once you have resolved your issue I hope you will stay around and talk to us all about what you have been drying in your machine, etc.