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.
Solar dryer advantages and disadvantages.
It is labour saving.
Solar dryers in parabolic domes allows water to run along the walls no contamination of goods by water better product quality color skin taste.
Relative advantages and disadvantages of cabinet type direct solar dryers are.
Less risk of spoilage because of the speed of drying.
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.
Solar power is pollution free and causes no greenhouse gases to be emitted after installation.
This is an indirect way of drying food using solar energy.
Solar dryers are equipment generally of small capacity and based rather on empirical and semi empirical data than in theoretical designs.
The product is protected against flies pests rain and dust.
The cost depends on the size of the solar dryer and the materials used but is at least usd 150.
Advantages of solar dryers.
Here are the results.
Heated air flows up the chimney to the outside of the dryer fresh replenishing air is drawn in other end of the 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.
The disadvantages of heat are that if there is no solar energy then there is no heat.
Air heated by the sun is harnessed and used to run the solar dryer.
Drying is faster because inside the dryer it is warmer than outside.
Advantages and disadvantages types of solar food dryers classification direct sun advantages least expensive disadvantages uv radiation can damage food simple indirect sun products protected from uv more.
These are easy to make at very low costs.
What are the disadvantages for freeze drying foods.
One is completely constructed and delivered by the manufacturer.
Some of the simple designs use only cardboard boxes and plastic wrap.
1 easy to assemble 2 cheap available materials can be used 3 simple to operate maintain and control and 4 light in weight.
The expencive process from start to finish.
Productivity increase in terms of labour energy cost saving.
1 color deterioration of green fruit during dehydration and 2 decomposition of residual chlorophyll in the tissue under direct solar radiation.
Advantages of solar dryer advantages of solar dryer domes.
Using a solar dryer or direct sun drying there is still the challenge of getting the right.
If the drying process is slow the fruit start to ferment and the product is spoilt.
