How loud is the freeze dryer pump? The pump operates at about 65-75 decibels, similar to a normal conversation or dishwasher. Many customers place their freeze dryer in a garage or separate room for quieter operation.
In truth, I was also really worried my son would be cross contaminated and end up being sick for a week. The hostess was insistent on making something he could eat and I finally relented. Needless to say, he ended up being very sick from the food.
What I should have done was just sent a freeze dried meal that would take me 3 minutes to rehydrate and he wouldn’t have to be stuck in the bathroom for days on end. Lesson learned!
One of the reasons I like the small freeze dryer is the size. At the same time, my large freeze dryer takes up space equivalent to a clothes dryer—the small one doesn't.
I removed the side covers and found the water dripping from the chamber insulation. I called up HarvestRight to ask for ideas on how to avoid this in the future.
The unit can also connect to and communicate the freeze dryer cycle data to a nearby PC through an ethernet cable.
Freeze drying isn’t my only preservation method, but it’s my favorite. Keep the skills of canning, dehydrating, fermenting and more in your pocket so you have various ways of preserving food. They all have their pros and cons but non-e should be ignored.
7) Next up the drain line. This not only deminishes condensation but also eliminates an unnecessary hot spot into the chamber.
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.
Out of caution, I have only ever taken mylar bags in a checked bag and I’ve never had a problem. I know of people who have taken them in carry-on bags as well without issues.
- Nutritional Preservation: This method retains about 97% of the original nutrients in food, making it superior to other preservation methods like canning or dehydrating.
The only way I know to filter the water vapor out would be a cold trap. They usually use liquid nitrogen Know More 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 Know More liquid nitrogen to feed it.
The length of time on a freeze dry cycle really depends on a few factors including what food you are drying, how much weight there is, and whether or not the food was pre-frozen.
and this piece was placed on the vacuum hose fitting. I can still remove 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.