22F, achieved by dividing nove hours by 110F (the difference in food temps). We both know that the FDer doesn't do linear as the temps fall faster early on and slowly peak to max low temps, but the food freeze time might be a tad more linear than the FDer as food is denser and must be frozen throughout.
Only in recent years has the amount of sugar consumed in the American diet been questioned. About half of the total energy consumed in the average U.S. diet is from carbohydrates.
Be wary of buying freeze-dryers that come from locations where the unit could have been tampered with or damaged, even by accident.
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.
The appliances that you buy will need to be specifically determined by your kitchen space, and the types of food that plan to be be serving.
So I corrected the oversight - I drilled and tapped the elbow to add the port. Here is a picture. It worked great today when I flushed the pump to clear out the gunk.
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.
A bit of background on me - I used to work in a sold state fabrication lab (university research lab) and had a lot of hands-on work with ultra-high vacuum equipment. The pumping we do for freeze drying was what was required to just start
Before purchasing a freeze dryer (an expensive product and therefore a large investment), it’s important to know a reliable place to buy it from.
For kitchens that serve a lot of breakfast foods, quick and efficient commercial toasters are essential.
"There comes a time in every project when you have to shoot the engineer and start production." -- author unknown
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.
Obviously things like ice cream and marshmallows you would want to let the freeze cycle run longer. When I'm ready to start the drying cycle, I open the door, remove the insulator, and check the temperature of the food on the trays with an infrared thermometer. As long as it's below -10F I start the dry cycle. A side note for TonyC, have you ever thought about attaching a mirror to each side of the tray rack to reflect the radiant heat back in to the trays? I've looked at some mirror finish stainless on ebay, and it looks like you could do it for about $40. Not sure if it's worth a try or not. I would think it would let you get more water out in a cycle because the radiant heat wouldn't be warming the ice on the chamber walls. Just a thought.... Edited December 16, 2015 by Pipsqueak duplicate post (log)
It's hardly the most exciting GoPro video for sure, and some may think it's about as interesting as watching a tree grow, but if you really want to see the Harvest Right "in action" in order to understand what's happening (not that there's much to see), this provides a "speeded-up" way more info to do that!