Document 44pOOwb4aynmrDo7BXK4NzNqx

910 Subject' Vacuum Pumps, Warm Air (Gravity) Water Heaters Water Heaters, Water Heaters Wiring CHAPTER 52 I- Table !. ' Codes and Standards-'--(Concluded) ' Title Sponsor " 1948 Guide Reference A.8.H.V.E. - Standard' Code /for.'.Testing,and t ,' A.8.H.V.E.; ' Rating Return Line Low. Vacuum-mating' Pumps (1934). -A.&H.V.E. Gravity Code and Manual for the'Design ami N.WJ..H. i A.CJi. N.WAM.A A.CA ' Installation of Gravity Warm Air Halting Section No. 5 Systems (1945). NJS.MA. Standards for Electric Water Heaters . NXM.A. (1945). American .Standard Approval Requirements for Gas Water Heaters (1944). A.GA. Testing- and Rating . Hand-Fired...Hot Water , . FMA..... 8upply Boilers (1948). *" ' National.Electrical Code, Standard of N.B.F.U.- .. - N.B.F.U. -, and N.FT.A. (1947),: /, V ' ;n.fsa. N.BMA:7 45-104 ASA. Z21.10-1944 BS ... CS145-47 ! N.B.F.U., ABBREVIATIONS A.CJSAA A.C.RM.A. A.FA.. A.GA. A.GA MM.* AJZ. ABA.' AJS.ofA. . AAH.VB,' AS.M.B. ABJtA. AJ2.TM. B 8. ` CJt.A. F.H A. GAMA: HJ. . HJ>. A A.C.C.NA. IMS : ... ^ I.CM.AM. Air Conditioning Manufacturers I.M.WJ. Industrial Mineral Wool Institute. Association.- I.O.BA. Industrial Unit Heater Association. Air Conditioning and Refrigerating NA.FM. 1 - --:-;! -' National Association of Fan: Manu Machinery Association. ' facturers. American Foundrymen's Association NM.F.U. American Gas Association. NJ2.MAI National Board of Fire Underwriters. "National`Electrical Manufacturers Association of Gas Appliance and 5 Association. Equipment Manufacturers. . N.F.PA. National Fire Prevention Association. AnthraciteIndustries laboratory.; ; ' MM.A: ' National Housing Agency- American Standards Association. - - NSC. ` National Research Council Acoustical Society of America. N.WAM.&A.CA. National Warm Air Henting and Air American Society of Heating and1'.- : ' Ventilating Engineers. O.B.l* Conditioning Association.- -' ` ` Oil Burner Institute. American Society of Mechanical O.B.IA. (hi Heat Institute of America. Engineers. -v,OJ>.A:*` Office of Price Administration'. ' American Society of Refrigerating '-PMJfA: Engineers. 'Propeller Fan Manufacturers Association. American Society for Testing .RJSJAJL. Materials. . Refrigeration Equipment Manu facturers Association. National Bureau of Standards. SMA.1 Convector Manufacturers Association. SAM. - Refrigerating Machinery Association. . Society of Automotive Engineers. Federal Housing Administration. ' S.BJ. .Steel Boiler Institute. Gas Appliance Manufaeturera* 8M.CA. Association. Standard Refrigeration Compressor' . ,, Association. Hydraulic Institute. TJ2.MA. - ~ ' Tubular' Exchanger Manufacturer's Heating, Piping and Air Conditioning ' Association. Contractors National Association. . UJj. . Underwriter's Laboratories. Institute of Boiler and Radiator'' VMS)A - ! United: States Department of Manufacturers Association. Agriculture. Institute of Cooking and Heating UMSMS:' Appliance Manufaeturera. United States Public Health Service. ^perseded 1940 by A.CSM.A. ^Superseded 1945 by GAMA. 'Superseded 1942 by OM.I.A Beating\ Ventilating Air Conditioning Guide 911 . Table 1. Specific. Heat of Solids3 ` Materials Temperature F Specific Heat ' Authority Alloys. Brass, Red-- *. ................. Bronze (80Cu, 20S)............... Monel Metal........ --............ Aluminum........ ........... ................. _Asbestos.. ... Brickwork.... ____ i....*............. . Carbon (Graphite)........................ ; _ Coal.."-.-'. **..%____ - CokeU....--....... i Copper... Fire Clay Bnckv-s-....................... .... ,__ Glass. ., RnM* - r - ... 77,_______ '" L' Iron.' Pure' ...J,:!--........... .-- Irori,*Pure___ 7-. '............ 7------- .. . . ., ; Piaster........... .'. 77.-................-...... ........ 7. Rocks. I,- __Limestone...................... ..... Marble...... ________ 7..-.-- Silica Brick _l*.......... Tin..s.:^.,,.:........ ...... Woods.(Average)............. .--:..... Zinc^_'_.... :___ 32 32 57-208 68-2370 80-212 68-208 ........... ........... ... 104-1637 ___ .._____ . ................ 64-212 77-1832 * 50-122 50-122. 64 32 -f40 32 32-600 68^-212 59^-212 32 32 : 63-210 54-212 59-212 32-212. 32 240-320 77-1832 77 68 32 ,. ! . .. UJo:0899 0.0883 0.0862 0.127 . 0.212 -0.195 .0.195 0.314 . 0.278 -0;201 . 0.270 0.0928 ,t).258 . . ; .v !../: s S S ....... S -.s- 1 s H, r '. r I .H -H H S I .0.161 ; .0.117 0.0312 . * Ss- " : .7 S' . 0^59 H - 0.487 .. .S 0.434 0.1043 - ;!--;;v/.- ss-. ` ; 0.127 r- - M\ -.I 0.1189 -H 0.1152 0.0297 . h , :7 s 0.1032 -..7 S- 0.2169 H' 0J2 -- H 0.0319 % . { 0.196 . 0.192 r 0^216 o.2i 0^2 . 0.0536 .. .. . ... . s. ; s s s. s. ; ;. s 0.1175 \ 1 ,, ;0.220 . . ?v H .s 0.263 0,0548 0.327 - ; i ., i- 7 S. S 0.0913 - "`\i: S 7 :. ''7. ! ... 7..\ , Table 2. = Specific Heat, of Liquids ;/ - Liquid .7 Alcohol, Ethyl-- ......-- ........ ............... Alcohol, Methyl................-..................... -- Lead: (Molten).--!.-------------------------:.-- Petroleum____ _ -- Sp Gr 1.0043 Sp Gr 1.0463- Water--:--;-- -------- :....... ......................... Temperature F.'.V 32 69-68 59-122 360 68 70^136 7- 64 64 59 Specdtic Heat ;. 0.548 0.601 ! 0:576 0.041 0.03325 .: 0.511 0.980 0.903 1.000 Authority !! ::,;s :.-S ' ~h -."is. s. : ... 1 ,w!, 7\S , Table 3. Specific Heat of Gases and Vapors Substance Temperature ` '"F ' Specific Heat at Constant - Pressure.. , Ratio of Specific Heat Cp/Cy Specific Heat at Constant Volume (Computed)'; Authority Air 7..... Carbon- Monoxide............. :... Coal Gas _ Flue Gas____.......................... Water Vapor....................... Water Vapor 32-392 80-392 52-^417 79-^388 68-1900 . 70-212 32^392 55^404 212 356 0.2375 ' 0.5356 0.2169 0.2426 0.3145 : 0.24 (Approx.) 3.41 0.2438 0.2175 0.421 0.51 1.405 1.277 1.3003 1.395 1.419 1.41 1.3977 1.305 0.169 * * 0.419 0.1668 0.1736 - 2.402 ' ' 0.1729 0.155 ' 0.322 7:--------. S' s. s S'1' s H' S s s s See also The Specific Heat of Thermal Insulating Materials, by Gordon B. Wilkes and Carl O. Wood (A.S.H.V.E. Transactions, Vol. 48, 1942, p. 493). . , .. Notes: When one temperature is given the true specific heat is given, otherwise the value is the mean speeme neai Deiween me given minis. . -- ,, Authorities: S--Smithsonian Physical Tables, 1933: I--International Critical Tables; H--Heating. Ventilation and Air Conditioning, by L. A. Harding ana A. C. Willard; M--Engineers Handbook, by Lionel S. Marks.