Mechanical Devices in the Home
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123. Dryer. Times they are deyised to direct currents of air thru the drying material. If the air is heated, the drying is hastened (Fig. 123).
A sieve on which food is spread hung above the stove is a simple drying device and one of the most practical for home use. The heat currents rising from the stove pass thru this and dry the food.
Many dryers are constructed on this same principle, having a heating unit below and trays of food above. These trays have to be shifted from time to time, as t...he moisture from the lower ones rises with the heat to the upper trays, thus retard- ing their drying. The top trays, if too numerous, are useless on this account. Two or three seem to be all that can be used with advantage at one time in home dryers, tho some machines are made with many more.
DISH-WASHERS, CANNERS AND DRYERS 177 Another type of dryer has a fan device in it which forces the air thru at a faster rate than would be accomplished by heat alone. Such air should pass thru a strainer. Ordinary air, even when drawn from a clean room, carries much dust with it, and if the dust is not strained out previously, it is strained out by the food.
What to read after Mechanical Devices in the Home?
You can find similar books in the "Read Also" column, or choose other free books by Edith Louise Allen to read onlineMoreLess
To quickly assess the difficulty of the text, read a short excerpt:
123. Dryer. Times they are deyised to direct currents of air thru the drying material. If the air is heated, the drying is hastened (Fig. 123).
A sieve on which food is spread hung above the stove is a simple drying device and one of the most practical for home use. The heat currents rising from the stove pass thru this and dry the food.
Many dryers are constructed on this same principle, having a heating unit below and trays of food above. These trays have to be shifted from time to time, as t...he moisture from the lower ones rises with the heat to the upper trays, thus retard- ing their drying. The top trays, if too numerous, are useless on this account. Two or three seem to be all that can be used with advantage at one time in home dryers, tho some machines are made with many more.
DISH-WASHERS, CANNERS AND DRYERS 177 Another type of dryer has a fan device in it which forces the air thru at a faster rate than would be accomplished by heat alone. Such air should pass thru a strainer. Ordinary air, even when drawn from a clean room, carries much dust with it, and if the dust is not strained out previously, it is strained out by the food.
What to read after Mechanical Devices in the Home?
You can find similar books in the "Read Also" column, or choose other free books by Edith Louise Allen to read onlineMoreLess
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