Handy man's workshop and laboratory . Fig. 275.—A heat retaining bottle 336 HANDY MAN S WORKSHOP AND LABORATORY ICELESS REFRIGERATION While the mad race for supremacy between the mercury andprice of ice is on much comfort can be taken in the factthat there are other methods of keeping victuals cool besidesthat of melting ice in an ice box. If in changing from thesolid to the liquid state water absorbs sufficient heat to keep anice box cool, it is equally true that a change from the liquid tothe gaseous state will result in refrigeration, provided, of course,the rate of vaporization keeps pace
Handy man's workshop and laboratory . Fig. 275.—A heat retaining bottle 336 HANDY MAN S WORKSHOP AND LABORATORY ICELESS REFRIGERATION While the mad race for supremacy between the mercury andprice of ice is on much comfort can be taken in the factthat there are other methods of keeping victuals cool besidesthat of melting ice in an ice box. If in changing from thesolid to the liquid state water absorbs sufficient heat to keep anice box cool, it is equally true that a change from the liquid tothe gaseous state will result in refrigeration, provided, of course,the rate of vaporization keeps pace with the heat which entersthe ice box from the outside atmosphere. Under proper condi-tions it is possible by this method to maintain a sufficiently low. Fig. 276—Refrigerator completewith tank uncovered Fig. 277—Cloth removed to showthe zinc box temperature in the ice box to preserve food from rapid simple method of making such an iceless refrigerator is illus-;trated in Fig. 276. In Fig. 277 the cover of the water tank isremoved. The box comprises a frame A, Fig. 278, which is builtupon a wooden floor B. The frame A serves as a support for azinc box D, which is fastened thereto. The water tank F issoldered to the top of the box, while at the bottom is a troughD1. The door E at the front of the box has its own trough sec-tion E1. Slots G are cut in the four sides of the tank F to re- HANDY MAN S WORKSHOP AND LABORATORY 337 ceive the ends of a cloth cover for the box. The cover is prefer-ably made up of several thicknesses of cheesecloth stitched to-gether at the corners, and the ends are jammed tightly throughthe slots into the water tankF. The door E is providedwith its own section ofcheesecloth, as indicated inthe illust
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Keywords: ., book, bookcentury1900, bookdecade1910, booksubjectworkshoprecipes
