What I presume was happening was that condensation was building up on the cooling coils between the insulation and the chamber and freezing. When I finally turned the FDer off it took 3 days for the ice buildup to melt and slowly soak through the insulation and drip onto the counter.
If the supply of safe water is cut off during an emergency, it is important to have water stored. Learn how to store water safely and where you can find an emergency source if needed.
So they have been sitting in my freezer awaiting a time when I was prepared to deal with them - I've told him several times that he isn't going to get usable raspberries out of this - just raspberry powder. I don't think he believes me!
Finding used freeze dryers isn't easy. That's because most people who get them consider them a long-term investment. As such, they hold on to them for years. However, a used freeze dryer or two sometimes makes its way onto the market.
Removing the ice from between the chamber wall and the insulation (hopefully will never have to do this again)
It's so much easier to stay on a low carb diet when you have things to nibble on. I've been drying meatballs (cut them in half first), and they make a fantastic savory snack. I'll post to the Tried and True thread when I get a chance.
1) I installed a 3/4" wide high density closed cell foam in the gap between the front of the chamber and the back of the front panel - just what Harvest Right suggested except all the way around (the first picture shows the gap). Use your fingers to push it into place. It needs to be tight against the inside panel. I then installed a vapor barrier around the entire FDer chamber. I used 7mil plastic and clear packing tape.
Because the freezing is fast, relatively few cell walls are ruptured which means it can be rehydrated with much less loss of quality.
The evaporator coils that touch the surface of the stainless steel vacuum chamber reach about -42 F. With food in the chamber and because the location of the thermister is on the middle shelf of the four shelves, the temperature it records is going to range from -25 to -30 F in the 9 hour default freeze time. This temperature is very adequate for freeze drying the food.
In my opinion, the absolute best place to buy a home freeze dryer is Harvest Right. We’ve had a medium-sized Harvest Right unit for more than 5 years, and it’s still going strong. You can check out their current online sales and promotions via this link.
Many online stores (taking Harvest Right as an example) have sections of their websites devoted to all the different benefits of using freeze dryers, explaining how to freeze dry, how it affects nutrition, and all other additional info you may need.
and this piece was placed on the vacuum hose fitting. I can still remove get more info the panel without removing the hose to clean the coils. Simply remove the screws and slide the panel down the vacuum hose a few inches.
I am looking for a more defined "heuristic" curve based upon the internal temperature. I am sure that your engineers probably have tables for such things. I also know that different foods freeze at different rates, that is why I am asking for a heuristic answer.
The industry standard machine for drying ice water hash at commercial operations that need serious throughput