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1947-48 Theatre Catalog, 6th Edition, Page 413 (399)

1947-48 Theatre Catalog, 6th Edition
1947-48 Theatre Catalog
1947-48 Theatre Catalog, 6th Edition, Page 413
Page 413


1947-48 Theatre Catalog, 6th Edition, Page 413

labor mining gold at the mines located in the Witwatersrand, near Johannesburg, South Africa, to stand the high temperatures at the bottom of these mines, both of which are over a mile deep. At the 6,300-foot level in the East Rand Proprietary Mine air-conditioning machinery with Freon for cooling the air in the mine has been installed. Another manufacturer put in a system for cooling the Robinson Deep Mine, where the men are working at the 8,300-f00t level.

Navy Craft

Still another group of men who appreciate the safety features of Freon-12 are the sailors who operate the submarine boats of the United States Navy. These men live in an atmosphere artificially created and artificially cooled, where health is guarded, and where every device to prevent accidents is provided. The recent air-conditioning installations are of the reverse-cycle type, cooling the atmosphere when the boats are cruising in the tropical waters and warming it in the Arctic. Destroyers, aircraft carriers, battleships, minesweepers, and every type of Navy craft have been provided in the last 15 years with refrigeration employing Freon-12.

Government Buildings

The great government buildings in Washington, including the United States Capitol, the Senate Office Building, the Library of Congress, the Old House Oiiice Building, the New House Office Building, the Post Office Building, the Department of Justice Building, the Archives Building, and the Administration Building of the Department of Agriculture, are all air-conditioned with Freon, comprising over 12,000 tons of refrigeration.

THE FREON REFRIGERANTS

The family of Freon fiuorine compounds, of which there are many members, satisfy wide fields of application where panic, health, fire, and property damage hazards are to be eliminated. The Freon compounds when used as refrigerants, having characteristic physical and thermodynamic properties, adapt themselves for use in reciprocating, rotary, and centrifugal type compressors which vary in size from fractional refrigeration tonnage up to 2,250 tons capacity; they produce wide ranges of temperatures that vary from normal room temperature to those 10w sub-zero temperatures beyond those found in nature and for conditions necessary for body comfort air-conditioning, processing and preservation of foodstuffs, and the wide variety of needs for industrial applications. There is a Freon refrigerant for every design, size, temperature requirement, purpose or use in mechanical refrigeration equipment.

Other uses for the Freon compounds are as solvents, intermediates, propellents, aerosol ingredient solubilizers, and propellent (lilucnts or pressure reducers.

The Freon compounds are clear and water-white, odors of the vapors are mild and somewhat ethereal but disappear when mixed with air, non-irritating to the eyes, nose, throat, lungs, and skin, non-toxic, non-flammable, nonexplosive, non-corrosive, stable, and inert.

1947-48 THEATRE CATALOG

Freon-113

Freon - 1 1 3, trichlorotrifiuoroethane (C2013F3), has a boiling point of 117.6 degrees Fahrenheit, and is used as a refrigerant in industrial and commercial air-conditioning systems; also, in industrial process water and brine cooling to 0 degree Fahrenheit, employing four or more stage centrifugal type compressors of 25 tons refrigeration capacity and larger. Freon-113 has been found satisfactory for use as a solvent or extractant in yarn and fabric finish anaylsis.

Freon-1 l

Freons11, trichloromonofiuoromethane (CCISF), has a boiling point of 74.7 degrees Fahrenheit, and has Wide usage as a refrigerant in indirect industrial and commercial air-conditioning systems; also, in industrial process water and brine cooling to -40 degrees Fahrenheit employing single or multi-stage centrifugal type compressors of 100 tons refrigeration capacity and larger. Freon11 is used as a solubilizer for DDT and a pressure depresser or reducer for the propellent Freon-12 as used in insecticidal aerosol.

Freon-114

Fre on- 1 1 4 , dichlorotetrafluoroethane (C2012F4), has a [boiling point of 38.4 degrees Fahrenheit, and is being used as a refrigerant in fractional horsepower household refrigerating systems and drinking water coolers employing rotary vane type compressor; also, in indirect industrial and commercial air-conditioning systems and in industrial process water and brine cooling to e70 degrees Fahrenheit, employing multi-stage centrifugal type compressors of 100 tons refrigeration capacity and larger. Large installations using Freon-114 are at the



neoprene plant at Louisville and ten 2,250-horsepower units at the Hanford Plant in the state of Washington.

Freon-21

Freon-21, dichloromonofluoromethane (CHClgF) has a boiling point of 48 degrees Fahrenheit, and may be used as a refrigerant in industrial and commercial air-conditioning systems; also, in industrial process water and brine cooling to e50 degrees Fahrenheit employe ing single or multi-stage centrifugal type compressors of 100 tons refrigeration capacity and larger; also, Freon-21 has been used in fractional horsepower household refrigerating systems and drinking water coolers employing rotary vane type compressors; also, Freon-21 has been used in comfort-cooling air-conditioning systems of the absorption type where dimethyl ether of tetraethylene glycol was used as the absorbent.

Freon-12

Freon-12, dichlorodifluoromethane (CCIQFZ), has a boiling point of *21.6 degrees Fahrenheit, and is extensively used as a refrigerant in both direct and indirect industrial, commercial, and household air-conditioning systems; also,

. in household refrigerators, ice cream

cabinets, frozen food cabinets, food locker plants, water coolers, and so forth, employing reciprocating type compressors ranging in size from fractional to 800 horsepower. Freon-12 is also used in household refrigerating systems, ice cream and frozen food cabinets employing rotary vane type compressors. Freon-12 is used in industrial process water and brine cooling to e110 degrees Fahrenheit employing multi-stage centrifugal type compressors in cascade of 100 tons refrigeration capacity and larger. One such installation has been made in the world's largest low-temper WHEN SERVICING refrigeration or air-conditioning equipment, where cx liquid refrigerant is involved. it is recommended that large lens spectacles or goggles be worn-as is this attache of Kinetic Chemicals, Inc., at the Wilmington planteto prevent the low boiling point refrigerant frame entering the eyes and causing freezing of the moisture around the eyeball, which would he a most painful iniury.
1947-48 Theatre Catalog, 6th Edition, Page 413