Document 82BJK2gXo6xJDZwrVjbrjb9RK

292 CHAPTER 19 1965 Guide And Data Book T" oJ2------Swelling of Plastics in liquid Refrigerants at Room Temperature1* - ____ linear Swvfl, fercciii II Phenol Formalde hyde Resin Cellulose Acetate' Cellulose Nitrate Nylon Methyl methacry late Resin 0 0.4 06 U 0 12 0 0 0 -0.1 Refrigerant 21 30 1 .,3 00 -* a 00 -0.2 0 -0.2 )l4<j --0^2 *0 1 -0.2 -0.2. Polyethylene 6,7 Polystyrene Polyvinyl Alcohol 0.3 Polyvinyl Chloride 0 Folyvinyiidene -0.2 Chionde 0.4 --0.1 -0.7 0 0 4.5 15.1 1.0 2.4 -0.2 -.-6.2 -0.1 0 Polytetrafluoro- 0 ethyiene -0.7 6.1 0 0 -0.3 * Rumple completely diibteptfed any form. A highly 0ammable gas is formed and the explosion hazard is great. ' Ammonia should never be used with copper, brass, or other alloys containing copper. When water is present in sulfur dioxide systems, sulfurous acid is formed and may rapidly attack iron and steel, and. other metals at a slower rate. Elastomers :'Hie linear swelling of some elastomers in the liquid phase of various refrigerants is shown in Table 21. Swelling data can be used to a limited extent in comparing the effect of. refrigerants on elastomers. However, other factors such as the amount of extraction, the tensile strength, and the degree of hardness of the exposed elastomer must be considered in a particular application. When other fluids will be present' in addition to the refrigerant, the combined effect on elastomers should be determined. In some instances, somewhat higher swelling of elastomers has been found in mixtures of Refriger ant 22 and lubricating oil than in either fluid alone. Plastics The effect of a refrigerant on a plastic material should be thoroughly examined under the conditions of intended use: * uc vwMiu an*tures oi two or more oasic types and it is difficult to predict the effect of the refrigerant. The linear swelling of some plastic materials in refrigerants is shown in Table 22. The swelling data can be used as a guide but, as with elastomers, the effect on the properties of the plastic ahmiM also be examined. Comparable data; for Refrigerant 22 are not available. The effect of Refrigerant 22 on plastics is gen erally somewhat more severe than that of Refrigerant 12 but not as severe as that of Refrigerant 21. . The effect of Refngerant 114 is very similar to that of Refrigerant 114a. REFERENCES Clmpter 7, Refrigerants (ASRE Data Boos, Design Vol- otie, American Societt or Refrigerating Engineers 1957os)- Chemistry and Phyria (Chemical Rubber Pub lishing Co., Cleveland, Ohio, 41st ed., 1959-60). andcPtiin^r: Encyclopedia of Chemical Technology (The InJefsci?I10e Encyclopedia, Inc., New York, 1956) ' A. P^ennmg and W. H. Markwood, Jr.: The viscosities of p* 243) refneran*fl (Refrigerating Engineering;-April 1939, R. J. Thompson: Properties,and characteristics of refriver- "" (RErawEBATTNo Enginbering, November 1942, p 311) t abstracted from Russian journals published m i959 and I960 (Kaltetecknik, July I960, p. 214).' ., 7 PowcU and A. R. Chaffoner: Proposed values for the thermal conductivities of some liquid refrigerants (Modem Re frigeration, Januaryl960, p. 42). ~ * JiH- ?ry:ChemicalEngineers'Handbook (McGraw-Hill Book to.,bc,, New York, 1950). W. H. Markwood and A. P. Behning: Thermal conductances and heat transmission coefficients .of''Freon' refrigerants (Re frigerating Engineering, February 1943, p. 95). , *'B; W. Powell: Need for revision of accepted thermal con ductivity values of certain refrigerants (Modem Refrigeration De"mberl?56z P- 434. Indudes a review of dataofuCheri neyeva published m-Russian).- - i- - a U-* S T^ermal Conductivity, of Gases (American of Mechanical Engineer* Transactions, 1954, p. 809). , , . A. Beacham and R. T. Divers: Some aspects of the didectnc properties of refrigerants (Refrigerating Engineer ing, July 1955, p. 33). u B. J. Eiseman, Jr.: How electrical properties of Troon' com pounds affect hermetic system's insulation (Refrigerating Engineering, April 1955, p. 61)/ ' ^7 " B- M. .Fuoss: Dielectric constants of some fluorine oom- die American.ChemiaU Society, 1938, p. 1633). . E;.E. Chariton and F. S. Cooper: Dielectric strengths of j^a^n|3J)Ulda. (General Electric fierieu. No. 865, September ,J* k- 9'P0?rnin: Facta figures on Troon' refrigerants (National Engineer, April 1960, p. 22) . a ?**{ E*TM. : ^ect on elastomers of Troon' compounds SLSSrm9 py'S??f0": (Bdtobuiko- EMmkbbu.o, _" J-,- Brown: Effect of propellants on plastic valve'comnonente (iSoop and Chemical Specialties, Maicn 1960, p. 87). CHAPTER 20 REFRIGERANT TABLES AND CHARTS TABLE OF CONTENTS SEE PAGE Refrigerant II (Triebloramouofluorocnethane) PraSure--Enthalpy Diin Properties of Liqurf and Saturated Vapee Propcrtica el Superheated Vapor Refrigerant jj (Diehlorodiflaoromethane) p^son--Enthalpy Ditpin p,onerties d Liquid aod Saturated Vapor propertim ot Superheated Vapor Refrigerant 13 (Moooehlarotriflnorometheae) Prepare Enthalpy Ktmm Properties el liquid and Saturated Vapor propertM* f Superheated Vapor Refrigerant 14 (Carhoatetnlhioride) Refrigerant 21 (DieMorcmcnofluoromethaae) Prereure--Enthalpy Diagram . Propertim et liquid aad Saturated Vapor Properties of Superheated Vapor Refrigerant 23 (Monoehiorodifluoromsthane) Praasure--Enthalpy Distrain Property of Liquid and Saturated Vapor Properties of Superheated Vapor Refrigerant 40 (Methyl Chloride) Pressure--Enthalpy Diagram Properties of Liquid ana Saturated Vapor Properties of Suparheated Vapor Refrigerant 113 fTriehlorotrifluoroethane) Pleasure--Enthalpy Diagram Propertiea of liquid and Satstated Vapor Properties of ftnpnrheatnri Vapor Refrigerant lie (DiehlorotetisSuoroefhaae) Preinma--Enthalpy Diagram Property of liquid and Saturated Vapor Propertiea of Superheated Vapor * Refrigerant 170 (Ethane) Pressure--Enthalpy Diagram Properties of Liquid and Saturated Vapor . _______ alpy Diagram Properties of liquid and Saturated Vapor Piopeities of Superheated Vapor Refrigerant 502 (Aaeotrope of 'Refrigerant * and Refrigerant 115) Premare--Enthalpy Diagram Properties of liquid aad Saturated Vapor Properties of Superheated Vapor Refrigerant C00 (n-Butane) Proem*--Enthalpy Diagram Properties of liquid aad Saturated Vapor TtSde-l Table 2 294 296 TtiifeS Table 4 Fig. 3 Table 6 ' Table 6 FI*. 4 Fig. 5 Table 7 Tables Pig. 6 Table 9 Table 10 Table 29 9$ > 300 ' 306 307 309 310 . 310 811 312 313 -314 349. Refrigerant 717 (Ammonia) Pressure--Enthalpy Diagram Properties of Liquid and Saturated Vapor Properties of Superheated Vapor Refrigerant 744 (Carbon Duxride) Pnmiiiii T7nlni))i> Diagram Properties of Liquid and Saturated Vapor Properties of Superheated Vapor Refrigerant 744A (Nitrous Oride) - filialira Fnltiilpy Diagram Properties of Liquid and Saturated Vapor Refrigerant 734 (Sulfur Dioxide) Pressure--Enthalpy Diagram Properties of liquid and Saturated Vapor Properties of Superheated Vapor Refrigerant 1150 (Ethylene) Pressure--Enthalpy Diagram Properties of liquid and Saturated Vapor 7%Jll Table 12 Ptg. 19 Fig. S Table 13 Table 14 Fig. 9 . Table IS Table 16 Pig. 15 Table 27 Pig. 17 Table 30 Pig. 10 Table 17 Table IS 318 SIS ' 319 350 820 821 321,. 324 325 - 347 346 349 350 328 329 329 - CRYOGENIC HUIDS Refrigerant 702 (Normal H; .Temperature--Entropy Properties of Vapor Refrigerant 703 (Parahydrogen) Refrigerant 704 (Helium) Temperature--Entropy Diagrams Enthalpy--Entropy Diagram Properties of Saturated Liquid aad Saturated Properties of liquid aad Vapor Refrigerant 720 (Neoa) Temperature Entropy Diagrams Properties of Saturated Liquid and Saturated Properties of liquid and Vapor Refrigerant 72S (Nitrogen) Temperature--Entropy Diagram - Properties of Saturated Liquid and Saturated Vapor Fig. 11 Table 19 Table 20 Fig. 20 ' Table S3 ' 333 334 334 851 352 Refrigerant 740 (Argon) Properties of Saturated Liquid and Saturated Vapor Properties of Liquid and Vapor Table S3 Table SI Fig. 12 Table 21 Table 22 Fig. 13 Table 23 Table 24 Fig. 21 Table 34 Fig. 14 Table 25 Table 26 Fig. 16 Table 28 Fig. IS Figs. 22. 23 353^354 Table 35 Figs. 24. 25 Fig. 26 Table 36 Tbs general responsibility for this chapter b amigned to TC 1.9, Refrigerants and Brines, aad to the Task Group far Refrigerant Tabka. 293 l1