Document 8Oewx4y4VE0qBg6Naqmoj8M9k

1066 UHAHTKK 48 54 Guide Performance of Air Filler,, by Mechanical Division. Association o/ America* g,a_ Ca"' by L- W' W*"-- "d G- G- ^ * tASMJ. JW 83 anTMarch.C1936C^UlM)Me`h0<la' by Kenneth Cartwriitht Engineering. Febroary. Jw, p p. lSr6* DriVe fr *aa3CDger Air Conditlonin*- hy J- R- Hornaday (Refrigerating Engineering, March. JWj .. R^irpad Air Conditioning,by Gordon T. Wilson {Refrigerating Engineering, May. 1943 n 323) p,n Air Conditioning, by M. R. Eastin (RatZunp Elec. Engr., August-December 1942) ` nJi^AT? Po*er tor RaUway Cars, by F. L. Sahlmann and E. M. BUI (Railway Elec. Engr. Mav tarn 19M)d Elld P"er fr Streamlmed PMsenyer Trains, by J. D. Loftis (A.S.M.B. Raleigh Section, oJtobK' P.C.C. Car Ventilation, B-3697 Wesringhouse Electric Corp., September, 1946. Buses ana Automobiles Bus Heating, by E. T. Todd and F. O. Gadd (Heating and Ventilating, Dec. 1946 p. 83). T,m,rio<?s?d R "T ^ ^ ,m0b,leS and by L W. ChUd (Society of Automotive Engineer. JamTM, J bsoi193r'. a"3n Conditioning. by Jerry Hicke (Heating, Piping and Air Conditioning, October^.' 1939? p.' 388L A C d l0mne' by A' J" MaUmckrodl and Lara Hanson (Refrigerating RfiiinceriTtt.'S, noI,PJul>y?'ll939).A'' Cond,tioaing Automobiles. by F. J. linsenmeyer (Society of Automotive Engineer. Jour- Airplanes Comfort in High Altitude Flying, by D. W. Tomlinson (A.S.H.V.E. Tbansactions, Vol. 47. 1941 o 57) Heat Kichangcrs forAircraft, by Arthur J. Hess (Refrigerating Engineering, September, 1944 p 192) ' H..t ing^d V--e--n- stda.t^ingHforATimrainasupwo,rtAyrroo.laanxe*so.robayBtA. .Mo..nB.rvojdb.(AiB.SA.NHS.VAJcBn.oTNhaa. nVsoal,c5t2io1n9s4,6)VoClo.m5.2,1946). Sm forrrtiuzatiton ol{Aircraft, by Albert A. Armnhhyrm (Pitman PuhblUishingir (Cinomrp., NNeawv vYTMorvk 1h9u45o) <dol^ p0^, as Pressurised Transport Aircraft, by B. L. Messinger (Heating and Ven Ships British VSSber>'l939S)hiPS' by R` MoDonald journal of the Institution gt Heating and Ventilating Bnginem, Ventilation and Air Conditioning of the S. 8. Panama (Heating and Ventilating, September. 1939, p. 47). Air Conditioning the New Mauretania (Heating, Piping and Air Conditioning, duly, 1939. p. 431). j,,,;;'S,,`n!',,I.en.iaJS"=d A,r Cooditioningon Shipboard, by J. H. Clarke (Heating, Piping and Air Con ditioning, August, p. 467; September, p. 529; October, p. 610 1940). v GfTM "uT by S' D' Colvj?' W,- " ,B- Hahne, and M. R. Colby (Transaction, oftheSocietg ei Nasal Architects and .Mantis Engineers, Part I. Vol. 46. 1938. p. 109; Part II. Voi. 49, 1941, p. 208) don Vobto jSni4^-l^ Noam,V. ml"' f ^ Ventilating Engineer., Do- Modern Marine Engineers Manual. Vol. II, Sections 16 to 19, Inc. (Cornell Maritime Press. 1943). Warship Ventdating, Heating and Air Conditioning, by Comdr. T. H. Urdahl. U.S.N.R.. and W. C., Whittlesey (A.S.H.VJb. Transactions, Vol. 49, 1943, p. 35). Standardized Hearing and Ventilating Equipment for Fighting Ships, by Comdr. T. H. Urdahl, U-S.NJL and Lt. John Everetts, Jr.. U.S.N.R. (Heating, Piping and Air Conditioning, July, 1943. p. 333). Designing Warship Ventilation with Standardized Equipment, by Comdr. T. H. Urdahl, U.S.N.R. and W C. Whittle sey (Heating, Ptptng and Ait Conditioning, August, 1943, p. 419). ,rtl!5t,on?d Maritime Commission Ships, by J. W. Markert (Heatingand VnriZorifl. Feb ruary, 1943. p. 32). Why Ship Ventilation, by J. W. Markert (Heating and Ventilating, October, 1943). Evo- lution of Ships Ventilation Systems, by J. W. Markert ( The Log, 1944 Yearbook, p. 202). Refrigeration. Air Conditioning, Ventilation and Heating, by H. E. Parker (Marine Engineering, Vol. II, The Society of Nasal AnhUeets and Marine Bngxnfcr*, 1944 Chapter VI, p. 319). Blackout at Sea. by J. W. Markert (Beotint March 1944, p. 55). Your Merchant Marine Will be Comfort Air Conditioned, by J. * Markert (/fearing and Ventilating, May, 1945, p. 60). .^2dero p. 177). Conditioning, by J. W. Markert (Marine JSnj ineerinp and S&tpptno Review, November, IMS, Modern Marine Refrigeration andAir Conditioning, by W. H, Carrier and L. E. Starr (Marine Engineering and Shipping Review, April, 1946, p. 132). Dehumidification Proteeta U. S. Navy's Inactive Fleet, by Capt. T. H. Urdahl and Comdr. E. R. Qu. (tfeaunp, rtptng and Atr Conditioning, March, 1946, p. 71). ,, Rf",;^io11 f LineT S- S- Outline, by Robert Tate (Society of Naval Architeetv and Marine Engineer., May 12, 1949). 1946)ir CnditioniDg of P"2 American President Linera. by J. W. Markert (Pacific Marine Revieur, Auger*. Ejport Lines Air Conditioning of Four Aces, by J. W. Markert (Marine Engineering, March, 1949). CHAPTER 49 WATER SERVICES Siting Cold Water Supply Piping, Procedure for Sizing Cold Water Systems, Cool ing Water Piping, Estimating Heating Load and Storage Capacity, Methods of Heating Water, Computing Heat Transfer Surface, Hot Water Supply Piping, Control of Service Water Temperature, Safety Devices, Solar Water Heaters, Domestic Hot Water by Heat Pump PROPER design of the water distributing system in a building is neces sary in order that the various fixtures may function properly. The amount of either hot or cold water used in any building is variable, de pending on the type of structure, usage, occupancy, and time of day. It is necessary to provide piping, water heating, and storage facilities of sufficient capacity to meet the peak demand without wasteful excess in either piping or equivalent cost. SIZING COLD WATER SUPPLY PIPING One of the important items that must be determined before any part of the water-piping system can be sized, is the probable rate of flow in any particular reach of piping. The rate of flow in the service line, risers, and main branches, however, will rarely be equal to the sum of the rates of flow of all connected fixtures. In fact, the probability that every fixture in a large group will be in use at the same time is so remote that it would be very poor engineering practice to design the piping to take care of such simultaneous flow. The demand load in building water supply systems cannot be deter mined exactly and is not readily standardized. The two main problems to be considered are: (1) the satisfactory supply of water for a given fixture, and (2) the number of fixtures which may be assumed to be in use at the same time. The minimum flow that will be satisfactory to the consumer depends greatly on the consumer, his standard of living, his professional needs, sire of family, garden requirements, and similar factors. Depending on these factors, the per capita water consumption for domestic use usually varies between 20 and 80 gal per day. Experience indicates that the type of dwelling also has considerable influence on the water consumption. In apartment houses the per capita daily water consumption is generally higher than in single-family houses. This is due to the use of a central metering system which is not conducive to the saving of water, and to the long hot water lines which cause high heat losses and an increase in the wasting of the cooled water. In designing water supply systems for apart ment houses, a daily per capita water consumption of 50 gal may be con sidered a safe design figure. ^though a considerable number of housing projects have been developed throughout the United States, conclusive water consumption data have not yet been gathered. Nevertheless, it seems that the daily per capita water consumption in housing projects falls in between the consumption in apart ment houses and that in single dwellings at the same geographical location. 1067