Appletons' cyclopaedia of applied mechanics: a dictionary of mechanical engineering and the mechanical arts (1880)
D. Appleton and Company, Benjamin, Park, 1849-1922 · New York, D. Appleton · leaf 147
. The Pictet System.—The principle of the system of refrigerating machinery devised by M. RaoulPictet is the volatilization of anhydrous sulphurous oxide, a colorless liquid, having a specific gravityof 1.6, and remaining fluid under a pressure of from 2 to 3 atmospheres. When allowed to escape… … ICE-MAKING MACHINERY. 137 ebullition of the oxide is 14° F., under the atmospheric pressure. The whole apparatus is extremelysimple, as is indicated by the annexed diagram of a small machine, Fig. 2369. The refrigerator I>consists of a tubular copper cylinder placed horizontally in a tank…
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