1 color deterioration of green fruit during dehydration and 2 decomposition of residual chlorophyll in the tissue under direct solar radiation.
Solar dryer advantages and disadvantages.
Less risk of spoilage because of the speed of drying.
Relative advantages and disadvantages of cabinet type direct solar dryers are.
Here are the results.
Productivity increase in terms of labour energy cost saving.
The disadvantages of heat are that if there is no solar energy then there is no heat.
What are the disadvantages for freeze drying foods.
The discussion started a while ago and has had a lot of feedback.
Using a solar dryer or direct sun drying there is still the challenge of getting the right.
Heated air flows up the chimney to the outside of the dryer fresh replenishing air is drawn in other end of the dryer.
Solar power is pollution free and causes no greenhouse gases to be emitted after installation.
Air heated by the sun is harnessed and used to run the solar dryer.
The majority of the numerous solar dryer designs which are available are used mainly for drying of various crops either for family use or for small scale industrial production.
These are easy to make at very low costs.
I have been following a post on wiki answers for a while on the advantages and disadvantages to solar power and wanted to share the results.
The cost depends on the size of the solar dryer and the materials used but is at least usd 150.
Some of the simple designs use only cardboard boxes and plastic wrap.
Advantages of solar dryers.
This is an indirect way of drying food using solar energy.
It is labour saving.
If the drying process is slow the fruit start to ferment and the product is spoilt.
The other solar dryer model has a simpler design and can be constructed by the farmer using local materials such as wood and bamboo.
1 easy to assemble 2 cheap available materials can be used 3 simple to operate maintain and control and 4 light in weight.
Solar dryers are equipment generally of small capacity and based rather on empirical and semi empirical data than in theoretical designs.
One is completely constructed and delivered by the manufacturer.
Endev supports two kinds of solar dryers.
Thus the solar powered air inflated grain dryer is a low cost portable dryer which is manufactured using easily available materials and can eliminate all the disadvantages occurring in the sun drying.
Advantages of solar dryer advantages of solar dryer domes.
Reduced dependence on foreign oil and fossil fuels.
Drying is faster because inside the dryer it is warmer than outside.
Solar dryers in parabolic domes allows water to run along the walls no contamination of goods by water better product quality color skin taste.
