Axel Heinemann: 1 revision

2015-01-27T08:03:28Z

1 revision

Franz Schreier at 14:45, 25 January 2015

2015-01-25T14:45:00Z

New page

{{Powering Agriculture Technology Database
|PAT quality check=Yes
|PAT Name=Solar Dryers
|PAT Picture=Solar Dryer.jpg
|PAT Type RE=Renewable Energy
|PAT Description=Solar dryers are devices that use solar energy to dry substances, especially food. There are two general types of solar dryers: Direct and indirect.

Direct solar dryers expose the substance to be dehydrated to direct sunlight. They have a black absorbing surface which collects the light and converts it to heat; the substance to be dried is placed directly on this surface. These driers may have enclosures, glass covers and/or vents to in order to increase efficiency.

In indirect solar dryers, the black surface heats incoming air, rather than directly heating the substance to be dried. This heated air is then passed over the substance and exits through a chimney, taking moisture from the substance with it. Dependency from sun radiation can be reduced by combination with other available heat sources.

(Source: http://en.wikipedia.org/wiki/Solar_dryer)
|PAT Technology Application Solar=Solar
|PAT Value Processing=Processing
|PAT Value Preservation=Preservation
|PAT Actions Drying=Drying
|PAT Commodity Cereals=Cereals
|PAT Commodity Fruits Vegetables=Fruits and vegetables
|PAT Commodity Roots and Tubers=Roots and Tubers
|PAT Commodity Pulses=Pulses
|PAT Commodity Fiber Crops=Fiber Crops
|PAT Commodity Spices=Spices
|PAT Dev Region Worldwide=N/A
|PAT Dev Region South Asia=
|PAT Dev Country South Asia=
|PAT Dev Region Africa=
|PAT Dev Country Africa=
|PAT Dev Region East Asia=
|PAT Dev Country East Asia=
|PAT Dev Region Europe=
|PAT Dev Country Europe=
|PAT Dev Region Latin America=
|PAT Dev Country Latin America=
|PAT Dev Region Middle East=
|PAT Dev Country Middle East=
|PAT Dev Region North America=
|PAT Dev Country North America=
|PAT Dep Region Worldwide=N/A
|PAT Dep Region South Asia=
|PAT Dep Country South Asia=
|PAT Dep Region Africa=
|PAT Dep Country Africa=
|PAT Dep Region East Asia=
|PAT Dep Country East Asia=
|PAT Dep Region Europe=
|PAT Dep Country Europe=
|PAT Dep Region Latin America=
|PAT Dep Country Latin America=
|PAT Dep Region Middle East=
|PAT Dep Country Middle East=
|PAT Dep Region North America=
|PAT Dep Country North America=
|PAT Dep Pot Region Worldwide=Worldwide
|PAT Dep Pot Region South Asia=
|PAT Dep Pot Country South Asia=
|PAT Dep Pot Region Africa=
|PAT Dep Pot Country Africa=
|PAT Dep Pot Region East Asia=
|PAT Dep Pot Country East Asia=
|PAT Dep Pot Region Europe=
|PAT Dep Pot Country Europe=
|PAT Dep Pot Region Latin America=
|PAT Dep Pot Country Latin America=
|PAT Dep Pot Region Middle East=
|PAT Dep Pot Country Middle East=
|PAT Dep Pot Region North America=
|PAT Dep Pot Country North America=
|PAT Dep Pot Region Not Available=
|PAT Manufacturers=Many manufacturers in many countries; high quality technologies see for example www.cona.at or www.grammer-solar.com; Many low cost solutions are locally available.
|PAT Economics=Increases independency from fuels; In many cases an economic way to dry food;
|PAT Technology Development Level=Low to high depending on size, purpose and source. So far, ETFE film as cover material has not yet been used. Implementing ETFE film to some of the existing systems might be an easy way to increase the efficiency of the device and to reduce material cost and provide longer life time - especially for the simple versions.
|PAT Maintenance=Low to medium, depending on the system;
|PAT Infrastructure=Plain ground;
|PAT Required Resources Manufacture=Glass, transparent plastics, metal, timber;
|PAT Required Resources Operation=In some cases electricity for the operation of ventilators;
|PAT Deployment Capability=High;
|PAT Requirements for Deployment=Developing a standard well performing solar dryer with longlasting materials (like ETFE), efficient ventilation supplied with photovoltaics, spread knowledge;
|PAT Relevance Autonomy=High - reduces dependency on fuels, improves the present situation (avoids transport losses, avoids contamination of food when in-approriate spots are used to dry food, provides the option to produce high quality dry products and to open new markets for the users);
|PAT Environment Impacts=None;
|PAT Bio-Cybernetic=100%
|PAT Links=http://en.wikipedia.org/wiki/Solar_dryer

http://intranet.eng.unsw.edu.au/node/608

http://www.builditsolar.com/Projects/Cooking/cooking.htm#Drying

https://practicalaction.org/a-simple-solar-dryer

http://www.alvanblanchgroup.com/solar-drier

http://practicalaction.org/solar-drying-2

http://www.cona.at/index.php?id=referenzen_fruechtetrocknung0

http://grammer-solar.com/cms/de/produkte-und-leistungen/spezielle-anwendungen/solartrocknung.html

http://www.arjunenergy.com/solar-dryers.html

Collection of interesting links: http://www.alternative-technology.de/Solar_Dryer/solar_dryer.html
|PAT Category=Food Conservation
|PAT Pumping=
|PAT Lighting=
|PAT Heating=
|PAT Cooling=
|PAT Wind=
|PAT Biomass=
|PAT Biofuel=
|PAT Biogas=
|PAT Humans=
|PAT Animals=
|PAT Biochar=
|PAT Composte=
|PAT Insects=
|PAT Plants=
|PAT Others=
}}

Solar Dryers (PA Technology) - Revision history

Axel Heinemann: 1 revision

Franz Schreier at 14:45, 25 January 2015