- published: 06 Sep 2013
- views: 7356
Drying is a mass transfer process consisting of the removal of water or another solvent by evaporation from a solid, semi-solid or liquid. This process is often used as a final production step before selling or packaging products. To be considered "dried", the final product must be solid, in the form of a continuous sheet (e.g., paper), long pieces (e.g., wood), particles (e.g., cereal grains or corn flakes) or powder (e.g., sand, salt, washing powder, milk powder). A source of heat and an agent to remove the vapor produced by the process are often involved. In bioproducts like food, grains, and pharmaceuticals like vaccines, the solvent to be removed is almost invariably water. Desiccation may be synonymous with drying or considered an extreme form of drying.
In the most common case, a gas stream, e.g., air, applies the heat by convection and carries away the vapor as humidity. Other possibilities are vacuum drying, where heat is supplied by conduction or radiation (or microwaves), while the vapor thus produced is removed by the vacuum system. Another indirect technique is drum drying (used, for instance, for manufacturing potato flakes), where a heated surface is used to provide the energy, and aspirators draw the vapor outside the room. In contrast, the mechanical extraction of the solvent, e.g., water, by centrifugation, is not considered "drying" but rather "draining".
Freeze-drying—technically known as lyophilisation, lyophilization, or cryodesiccation—is a dehydration process typically used to preserve a perishable material or make the material more convenient for transport. Freeze-drying works by freezing the material and then reducing the surrounding pressure to allow the frozen water in the material to sublimate directly from the solid phase to the gas phase.
Modern freeze-drying was developed during WWII. Blood serum being sent to Europe from the US for medical treatment of the wounded required refrigeration, but because of the lack of simultaneous refrigeration and transport, many serum supplies were spoiling before reaching their intended recipients. The freeze-drying process was developed as a commercial technique that enabled serum to be rendered chemically stable and viable without having to be refrigerated. Shortly thereafter, the freeze-dry process was applied to penicillin and bone, and lyophilization became recognized as an important technique for preservation of biologicals. Since that time, freeze-drying has been used as a preservation or processing technique for a wide variety of products. These applications include the following but are not limited to: the processing of food, pharmaceuticals, and diagnostic kits; the restoration of water damaged documents; the preparation of river-bottom sludge for hydrocarbon analysis; the manufacturing of ceramics used in the semiconductor industry; the production of synthetic skin; the manufacture of sulfur-coated vials; and the restoration of historic/reclaimed boat hulls.
Downstream Processing by Prof. Mukesh Doble, Department of Biotechnology, IIT Madras. For more details on NPTEL visit http://nptel.iitm.ac.in
When harvest comes to an end, a whole new phase of cannabis cultivation begins. Drying and curing are an essential part of creating a superior product. The April 2015 issue of HIGH TIMES features a story about the Jah Goo harvest at CampCool Farms. One of the master growers at CampCool explains what it takes to properly dry and cure great pot. Stay tuned to hightimes.com for cannabis news, cultivation, and products.
Here's a video tip on how to dry your big buds! If you want to ask me questions, I hang out at my new Marijuana Growing (www.marijuanagrowing.com) forum, come say hello! Hemp CBD products at http://Cervantes.co Visit my new forum: http://www.marijuanagrowing.com/ Submit your pics here: http://www.marijuanagrowing.com/forum... Twitter: http://www.twitter.com/JorgeCervantes Facebook: http://www.facebook.com/JorgeCervantesTV My books: http://www.amazon.com/Jorge-Cervantes/e/B002BM1OFU/ref=ntt_athr_dp_pel_1
A short video to simply explain the freeze drying process and how a freeze drying microscope can be used to optimise the drying cycle and save millions of dollars. http://www.linkam.co.uk/freeze-drying
Constant and Falling rate periods in food dehydration are described. Please provide feedback on this module by selecting _Like_ or _Dislike_. Your feedback and comments is important to me in developing new tutorials. For more learning contents link to www.rpaulsingh.com
Tammy Roberts narrates this short video that covers the basics of drying food. For more information check out the guidesheet from University of Missouri Extension entitled, "Quality for Keeps: How to Dry Foods at Home" at http://extension.missouri.edu/publications/DisplayPub.aspx?P=GH1563. For information about conditioning Kiwi can be found online at http://nchfp.uga.edu/how/dry/csu_dry_fruits.pdf
Material drying is the removal of water from a material or product. The drying of powdered material is an important part of the powder processing industry today. There are several types of drying. They are: Filtration Drying Filtration drying involves using force to push the wet material against a filter. The liquid will move through the filter, while the solid material will stay against the filter. This separates the water and liquid, thereby effectively drying the material. Centrifugation Centrifugation is the use of rotation to separate the liquid and powder by density. If the mixture of the liquid and powder are rotate quickly enough, the powder will move away from the liquid, thereby separating the powder and liquid. This dries the material. Evaporation Evaporation is the remova...
FORUM and MERCHANDISE available at Http://www.NVCMG.com This is the final segment of the 7 part How to grow series. In the section we will discuss harvesting your ripened cannabis plant, drying your colas into smoke able product, and curing your buds to get full flavor and effect. This is a rough edit. LED lighting provided by http://www.topshelflight.com. Use discount code "closetMG" for 10% off your order at top shelf light. If you are looking for a safe way to acquire good genetics, Send the discount code message "closetMG " to @northgenetics on Instagram or by email at northgenetics@gmail.com for a 20% discount on your donation. https://instagram.com/northgenetics/ Visit me on Instagram also @nvclosetmedgrower https://instagram.com/nvclosetmedgrower/ Here are a few inexpensive ...
The Tallest Man On Earth - The Drying of the Lawns
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The Dead Sea has already lost more than one third of its surface area over the years. The water level is currently dropping by over 1 meter every year and its shoreline is expected to drop from 411 meters to 430 meters below sea level by 2020, according to the environmentalist group EcoPeace Middle East. Traditionally, the Jordan River is the Dead Sea’s inflow source. However, 50 years ago it was diverted to supply cities, reducing the water inflow level to the Dead Sea to just 5% of its original volume. The hot and dry climate of the region makes it difficult for the Dead Sea to restore itself. That added to the rapid loss of water has resulted in the increased salinity of the lake. The group also points out that the Dead Sea is threatened by cosmetic companies that extract mineral wat...
Here I demonstrate a trio of different towel drying techniques using the super mean Viper Green body panels of a 500bhp GT3RS. UK Store: http://www.carcleaningguru.com/uk-store/ US Store: http://www.carcleaningguru.com/us-store/ Services: http://www.carcleaningguru.com/services/ Tuition: http://www.carcleaningguru.com/tuition/ Feature Your Car: http://www.carcleaningguru.com/free/ Instagram: http://www.instagram.com/carcleaningguru Facebook: http://www.facebook.com/CarCleaningGuru Products Used: Kranzle K7 Pressure Washer: (UK) - http://amzn.to/2jFia8U (US) - http://amzn.to/2kbtZHm Heavy Duty Foam Lance: (UK) - http://amzn.to/2k0Esmo (US) - http://amzn.to/2k0EBpY Synthetic Wash Mitt: (UK) - http://amzn.to/2jmIC6e (US) - http://amzn.to/2ku04aB Meguiars Buckets & Grit Guards: (UK) - ht...
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How to build a cheap-ish freeze dryer. It can make astronaut ice cream, instant coffee, mre's and all sorts of freeze dried foods. The freeze drying process turns the water in frozen foods into a gas without it ever being a liquid. This sublimation phase shift maintains the foods structure. While that's cool and all, Freeze dryers are't the most useful things unless you do a lot of camping or long trip without a fridge stuff. You could easily make it for around $200 starting from nothing I bought the materials at Mcmaster.com amazon.com and various local stores dry ice can be purchased at most grocery stores I found the water bubblier at my local dump There are many different sorts of design options, this is just a more basic one without much automation. Various warnings: Dry ice w...
Downstream Processing by Prof. Mukesh Doble, Department of Biotechnology, IIT Madras. For more details on NPTEL visit http://nptel.iitm.ac.in
I ended up with 474.6 grams of dry bud. On a 90 to 93 day grow 9 female's in 1 and 3 gallon pots under 1750 watt HPS during flower. Grow Grow Grow ✌ 21 AND OLDER PLEASE! This Ch is being filmed and grown in the state of Oregon. I produce this this How to Grow Cannabis ch because at one time I had nobody to turn to, and had no idea where to start when it comes to growing cannabis plants. These videos are intended for anybody with an open mind that wants to grow cannabis on your own. I Believe simple is better and less stress you put on your plants the bigger and better they will harvest. I'm still learning to this day and also believe your mistakes are more valuable then you think as long as we stay positive and Grow Grow Grow Peace!
FORUM and MERCHANDISE available at Http://www.NVCMG.com This is the final segment of the 7 part How to grow series. In the section we will discuss harvesting your ripened cannabis plant, drying your colas into smoke able product, and curing your buds to get full flavor and effect. This is a rough edit. LED lighting provided by http://www.topshelflight.com. Use discount code "closetMG" for 10% off your order at top shelf light. If you are looking for a safe way to acquire good genetics, Send the discount code message "closetMG " to @northgenetics on Instagram or by email at northgenetics@gmail.com for a 20% discount on your donation. https://instagram.com/northgenetics/ Visit me on Instagram also @nvclosetmedgrower https://instagram.com/nvclosetmedgrower/ Here are a few inexpensive ...
This video presents an introduction to drying of solids. By the end of this lecture you should be able to: - Understand psychometric charts and key drying parameters - Explain the drying process and drying curves - Calculate drying times
Material drying is the removal of water from a material or product. The drying of powdered material is an important part of the powder processing industry today. There are several types of drying. They are: Filtration Drying Filtration drying involves using force to push the wet material against a filter. The liquid will move through the filter, while the solid material will stay against the filter. This separates the water and liquid, thereby effectively drying the material. Centrifugation Centrifugation is the use of rotation to separate the liquid and powder by density. If the mixture of the liquid and powder are rotate quickly enough, the powder will move away from the liquid, thereby separating the powder and liquid. This dries the material. Evaporation Evaporation is the remova...
10 hrs: https://www.youtube.com/watch?v=OHzwANmqfOI 10 day Hair Dryer Sound https://www.youtube.com/watch?v=EQD3b0OjhyU&index;=1&list;=PLe5_kK6g9ABBhjlEOUGQigbIecrLuQpc5 8 Hours Sea Waves Ocean Waves : https://www.youtube.com/watch?v=Pkkqv6KMb50&feature;=youtu.be 2 hours 120 minutes Relaxing Hair Dryer Sound Facebook: http://www.facebook.com/milleaccendinifunpage Youtube: http://www.youtube.com/user/milleaccendini Sito: http://www.magiamagia.org/ twitter: http://twitter.com/#!/milleaccendinit
White Noise for babies, blow dryer ASMR 10 hours, relaxing video, sleep aide, hair dryer, hairdryer
Demonstration and discussion of the wortheffort techniques for processing, roughing , and drying found green wood. We go over band saw techniques, turning techniques, safety, spindle roughing, bowl roughing, coring, drying, warping, green turning, ect...
A video presentation by Donald G. Mercer., Ph.D, P. Eng., FIAFoST, Department of Food Science, Ontario Agricultural College, University of Guelph.
using spray dryer to make honey liquid into honey powder
Part 2 at: https://youtu.be/Xz9K8D0EmRQ A shootout of the best 15 car drying towels... waffle weaves, diamond weave, fluffly towels, twist weave, fluffly waffle weaves... "how to dry your car" detailing methods
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Towel is available from (with international shipping options) http://waxpack.co.uk/home/shop/microfibre-towels/master-of-fibre-drying-towel/
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9 Hours of rhythmic, hypnotic, clothes dryer sound. The screen will darken after a few seconds. If you enjoy this video, please consider liking and subscribing, sharing, and commenting below. Thanks for listening! And don't forget to try other SleepySounds videos: Brown Noise: https://youtu.be/LY0kLycju-I Pink Noise: https://youtu.be/-f-JjmEtrvQ Forced Air Heater: https://youtu.be/jMVKYhB5Xzk Sailing The Sleepy Seas: https://youtu.be/3O4PZE3B2tA Sleeping Quarters – Starship Sleep Sound: https://youtu.be/EzcKrfKaUcM Deep Sea Soundscape: https://youtu.be/UjQxhOXco_k Deep Sea Whale Songs: https://youtu.be/s2zF_-tBV4A Wetlands at Night: https://youtu.be/cdjqURPeum0 Jungle Birds and Crickets: https://youtu.be/YbCP0ShVnb4 Jungle Rain: https://youtu.be/3cHUATIIs4w Forest Rain: https...
No Description Available... Credit to: Christopher Tarr https://www.flickr.com/photos/random1/ This image is licensed under Creative Commons by Attribution: 3.0 http://creativecommons.org/licenses/by/3.0
I'm a cherry drying pilot in Washington state. This is a narrated GoPro video of me drying a 16-acre orchard in the Wenatchee area. It's not exactly riveting stuff -- after all, the work is tedious. But the narration explains what I'm doing and why I'm doing it. It also offers some information of interest to helicopter pilots who might be interested in doing this work. You can learn more about my cherry drying work on my blog: http://www.aneclecticmind.com/tag/cherry-drying/
Subject : Food Technology Paper : Technology of Fruits and Vegetables Module : Advanced drying processes for fruits and vegetables
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