Ontario Sessional Papers, 1901, . E [ No. 14 cooling-chamber, extending from the top to the trough at the bottom. These tubes withthe trough serve incidentally to carry off the water from the ice-box ; but their principalfunction is to hold a mixture of ice and salt, which mixture is to take the place of the icein the box, when it is desired to reduce the temperature of the refrigerator to a lowerdegree than can be reached by the use of ice alone. Small openings were made at thetop over the air spaces in the walls, so that a thermometer might be suspended in the air-space, as shown in
Ontario Sessional Papers, 1901, . E [ No. 14 cooling-chamber, extending from the top to the trough at the bottom. These tubes withthe trough serve incidentally to carry off the water from the ice-box ; but their principalfunction is to hold a mixture of ice and salt, which mixture is to take the place of the icein the box, when it is desired to reduce the temperature of the refrigerator to a lowerdegree than can be reached by the use of ice alone. Small openings were made at thetop over the air spaces in the walls, so that a thermometer might be suspended in the air-space, as shown in Figure 2. Figure 2 is a vertical section of the whole refrigerator, showing the relative positionsof ice-box, cooling-chamber, tubes, and trough. The walls, ceiling, and floor are con-structed on the same plan, as follows : If inch, studding having on each side two thick-nesses of I inch, matched lumber (spruce), with a layer of building paper between eachtwo thicknesses of spruce. Figure 3 shows a transverse section of part of the Fig. 1.—A simple refrigerator constructed by the Collegecarpenter for experiments in refrigeration. Purpose of the Experiment.—The purpose of the experiment that we have been ablethus far to conduct was, to determine the amount of ice that would be consumed by theabsorption of heat through the walls of a refrigerator of given dimensions, constructedafter the same plan as the one used in the experiment, which plan is that recommendedin the instructions on Oold Storage issued by the Dominion Government. We endeavoredto obtain a radiation-co-efficient, that is, the number of units of heat that would radiatethrough a square foot of the wall of this refrigerator in twenty-four hours, with a differ-ence of temperatures of outside and inside air of 1 F. A unit of heat may be defined asthat quantity of heat-energy required to raise the temperature of 1 pound of water 1 ° F. The amount of ice consumed by an empty refrigerator depends on these con
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Keywords: ., bookauthorontariol, bookcentury1900, bookdecade1900, bookyear1901
