. Bulletin - Massachusetts Agricultural Experiment Station. Agriculture -- Massachusetts. FARM STORAGES FOR APPLES 19 Insulation No matter what type of building is used, it must be well insulated to make a satisfactory storage. Frame buildings are commonly insulated with fill insula- tion, as the space for the fill is partially provided in the normal construction of the building The most common materials are ground cork, manufactured fibrous materials, and shavings, all of which are good insulators provided they remain dry. Every effort must be made to prevent the entrance of moisture, and the
. Bulletin - Massachusetts Agricultural Experiment Station. Agriculture -- Massachusetts. FARM STORAGES FOR APPLES 19 Insulation No matter what type of building is used, it must be well insulated to make a satisfactory storage. Frame buildings are commonly insulated with fill insula- tion, as the space for the fill is partially provided in the normal construction of the building The most common materials are ground cork, manufactured fibrous materials, and shavings, all of which are good insulators provided they remain dry. Every effort must be made to prevent the entrance of moisture, and the common means for doing this is to line the surface enclosing the insula- tion with waterproof paper. The chief source of moisture is from the air entering the insulation through the outside walls. This moisture is deposited when warm air comes in contact with the cold insulation. Continuous condensation from the outside may eventually moisten the insulating material so much that it loses a great deal of its insulating value. The heat transfer through a few types of building construction is given in Table 4. The values under "C" give the number of British thermal units which will pass through one square foot of area per hour per degree of temperature difference. By using this coefficient, it is possible to determine heat leakage for any set of assumed temperature conditions. The columns under "Tons" indicate refrigeration load per 100 square feet for two storage temperatures, with normal air and ground temperatures for New England at apple harvest Figure 10. Remodeled Structure. Basement storage ten feet or more higti obtained by raising old ceiling. Packing shed added on side. Second story used for box storage. Regranulated cork and many other types of fill insulation when installed under ideal conditions have as high insulating values as corkboard. In refrigeration practice, however, it is customary to use two inches of fill insulation as equivalent
Size: 2135px × 1170px
Photo credit: © Book Worm / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: ., bookauthormassachusettsagricult, bookcentury1900, bookdecade1900
