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Insulation Alfol Insulation Go. Chrysler Building New York, N. Y. Agents in Principal Cities INSULATION for INSULATION for Fans Turbines Blowers Dehumidifiers Pumps Air Conditioners Ducts Boilers, Pipes, etc. Houses, Buildings, etc. At temperatures up to 1250 F. Patented in 34 Countries Refrigerators Refrigerator Cars Refrigerator Trucks Refrigerator Boxes Refrigerated Rooms etc. Ships Ovens Ranges Tanks Stills DESCRIPTION Alfol Insulation is a flexi ble form of insulating material for use on irregular, curved or straight surfaces where it is desirable to conserve heat or cold, prevent condensation and block sound transmission. Alfol Insulationlayers spaced ap proximately apart Conductivity-- Pond Type Jit Crumpled Type .18 In its simplest form it con sists of successive layers of crumpled special metal foil applied approximately 54 in* apart. The outside layer of Alfol is covered with a re movable metal jacket. Alfol is a modern, scientifically designed insulation which effectively and econo mically meets all high and low temperature require ments. Some of the many advantages are: 1. Negligible Weight-- only yi oz. per board foot. 2. Highly Efficient--con ductivity .28 B.t.u. per hour, per sq. ft., per 1 F temp, difference, per inch thick. 3. Non-Inflammable -- being metal it will not burn. 4. Impervious to Mois ture--repels all mois ture attacks thereby retaining its uniform high insulating value. 5. Durable -- unaffected by vibration, will not disintegrate, crumble, warp or settle. 6. Odorless and Clean--Alfol has no odor. No dust, dirt or waste result from its use. much more rapidly than with any_other insulation. 8. Low Initial Cost--ease, rapidity of application and no dirt or waste make the initial cost of Alfol lower than for most other insulations. APPLICATION Alfol Insulation is applied in never more than 3 crumpled layers to one inch thick ness. The high re- tv foil (95%) and the non-conducting air spaces between the layers, provide Alfol's amazing efficiency. It is never necessary to wad or pack Alfol in place. As a mat ter of fact, when ap Alfol Insulated Routes pre heat quicker in winter, and plied loosely in cor cool down quicker in summer. ners, slots, etc., its efficiency is actually increased. All Alfol joints are lapped in each layer about 1 in. and staggered with respect to joints in ad jacent layers. ^PERMANENCE Many years oToperating service in build ings, railroad cars, locomotives, ships, ovens, piping etc., have proved Alfol's en during efficiency. Removable metal jackets with their many obvious ad vantages are ap plied over Alfol Insulation. Alfol Insulation on 8000 KW. Turbine SIZES Alfol is furnished in convenient size rolls of 2000 or 3000 sq. ft. Rolls are approx. 6 in. diam. x 1554 `n* 7. Low Heat Stor age--Alfol pos sesses virtually ENGINEERING Trained Alfol en no heat storage gineers are ready to capacity --there fore pre-heating or pre-COOling may be do--n---e- Burlington Zephyr, Alfol Insulaled. assist in the solu tion of your insula ting problems. (See Chapter 5 for information on Aluminum Foil Insulation) 844 Insulation American^Flange & Manufacturing Co. Inc. 26 BROADWAY NEW YORK Terro Therm Something New in Insulation Ferro-Therm metal insulation is a new invention utilizing commercial black steel sheets properly spaced to eliminate turbulent air flow and to provide high thermal insulating efficiency. In Ferro-Therm insulation parallel black sheets of 33 gage having low emission and high reflection values at the frequencies of radiant heat are used. They are formed with angular surfaces with small ribs at the joint to secure rigidity, eliminate vibration and prevent transmission of sound. Ferro-Therm metal insulation is made 16 by 40 in., 22 by 40 in. and 32 by 40 in. for convenient and eco nomical installation. Typical Ferro-Therm Installation The number of sheets of Ferro-Therm used in an insulated wall may be one or more and the spacing may be 54 in., 54 in., 54 in., % in. and J4 in., depending on temperature differences. Applications--General building insula tion, cold storage plants, railway refrigerator Interior of Hot Room at New Castle Laboratory cars, refrigerators, ovens, dry kilns, boiler and pipe covering. In building applications for walls or roofs the use of one or more sheets is advisable and the accompanying illustration shows the method of application. The heat conductivity factor of Ferro-Therm is 0.226 Btu's per hour per square foot per deg. F per inch of thickness determined in tests made by J. C. Peebles, Mechanical Engineer, Armour Institute of Technology, Chicago, Illinois, on a 2 in. thick panel of four sheets with 54 in. spaces at a mean temperature of 72.1 F. Ferro-Therm may also be successfully applied for insulating pipes carrying steam, water or refrigerant. Ferro-Therm has the following unique advantages; (1) No absorption of moisture or adsorption of gases, (2) No condensation of moisture in normal operation, (3) Proof against attack by bacteria and rodents, (4) Free from odors--non-inflammable, (5) Light in weight--compact--strong--durable, (6) Low heat storage value, hence quick stabi lization of temperature, (7) High in insulating efficiency. .More complete data on Ferro-Therm will be gladly supplied. The services of trained insulating specialists are available if you will write the American Flange and Manu- Co., Inc. Ferro-Therm is sold exclusively by this company. Engineers, Architects and Contractors are invited to write for prices. 845