The main function of the device is to remove the moisture from the food to aid in the preservation process of food for longer time. The food dehydrators are a method of the preserving the fruit, meats and vegetables which is practiced from long time.
Design:
The units are like the conventional ovens which are low powered and they use the heated air flows and which can reduce the water the content in the food. The normal water content in the food is more than eight to ninety percentage for the various fruits and also to the vegetables and fifty and seventy-five percentage for the various meats the removing of the moisture will not aid to grown of the bacteria from growing and spoilage of the food doesn’t occur. If the moisture is removed there will be drastic decrease in the weight and often it will the storage capacity to be higher. The food dehydrators are used to preserve and to extend the shelf life of the various foods too.
Requirements:
The food hydrators is the unit which requires heat source and the such kind of the source may be solar energy or the electric power of the biofuel and it will vary from the large scale of the dehydrations projects .A commercial food dehydrators will be with the basic parts that usually consist of the heating elements and the electric fans and the air vents which will allow the air to be circulated and the food trays which are lay the food upon .The dehydrators heating the elements and the fans the vents simultaneously work to the direct hot air oven on the food , which will accelerate the surface evaporation process and warm the food and in return will cause the moisture to be released in the interiors .The entire process will continue the process until the food is totally dried and the substantially the water content is lowered and it reaches to the less than the twenty percentage .
The key aspect of the successful food dehydration process is that the application of the constant temperature and the requirement of the adequate amount of the air flow. The high temperatures may harden the food and the harden food when exposed to the moisture may be in the chances of the spoilage.
Summing up:
The units are like the conventional ovens which are low powered and they use the heated air flows and which can reduce the water the content in the food.