Document gD7g2qqnDRjgwbz9vDpm631aq

.916 CHAPTER 42 1951: Guide rnent, by James H. Wilson and E. C. Groesback (Research Paper 1305, National Bureau of Standards Journal of Research, Vol. 24,1940, p. 665). The Control of Corrosion in Air-Conditioning Equipment by Chemical Methods, by C. M. Sterne (Proceedings, American Society for Testing Materials, Vol. 38, 1935, Part 2, p. 261). " Cold Water Vacuum Deaeration, by S. T. Powell (Proceedings, Water Confer ence, Engineers' Society of Western Pennsylvania, 1945, p. 51). 11 Corrosion--Causes and Prevention, by F. N. Speller (McGraw-Hill Book Co., 1935, p. 366). 11 Corrosion Control with Threshold Treatment, by G. B. Hatch and Owen Rice (Industrial and Engineering Chemistry, Vol. 32,1940, p. 1572). " Refrigeration Data Book (American Society of Refrigerating Engineers, 1936, p. 404). " Engineering Problems of Water Treatment, by L. F. Collins (Power Plant Engi neering, Vol. 50, July 1946, p. 78-81,120). See p. 470 of Reference 18. ** Studies in The Detroit Edison Co.- (Unpublished). ** Preventing the Solution of COj in Condensates by Venting of the Vapor Space of Steam Heating Equipment, by D. S. McKinney, J. J. McGovern, C. W. Young and L. F. Collins (A.S.H.V.E. Transactions, Vol. 51, 1945, p. 53). 14 Corrosion in Steam Heating Systems, by Leo F. Collins and Everette L. Hender son (Heating, Piping and Air Conditioning, October 1939, p. 620). U. S. Patent 1,395,730. " U. S. Patent.2,053,024. > U. S. Patent 1,903,287. - ** Treating Steam Chemically to Reduce Return Line Corrosion, by A. A. Berk (Industry and Power, Vol. 53, Nov. 1947, p. 79). * Tests in The Detroit Edison Co. (Unpublished). * More Information Concerning Corrosion in Steam Heating Systems, by L. F. Collins (Proceedings, Water Conference, Engineers' Society of Western Pennsylvania, 1943,p. 37). . 11 Rubber Linings and Coatings, by J. J. McNeil (Corrosion and Material Protec tion, March-April, 1947). ** Protection of Steel Bins from Corrosion, by'J. V. Schaefer (Power Plant Engi neering, Vol. 26, 1922, p. 632). ** Some Notes on Corrosion of Cast-Iron Sectional Boilers, by E. R. Walters (The Institution of Healing and Ventilating Engineers, Preprint, 1944). See p.. 67 of Reference 2. ** Soil Corrosion Studies, i941 by K. H. Logan and M. Romanoff (National Bu reau of Standards Journal of Research, Vol. 33, 1944, p. 145). * Cathodic Protection of Steel Equipment Submerged in Water, by L. P. Sudra- bin (Proceedings, Water Conference, Engineers' Society of Western Pennsylvania, 1944). .. 17 A discussion by D. W. Haering (See p. 66 of Reference 11). " Cyclohexylamine and Dicyclohexylamine, by T- S. Carswell and H. L. Morrill (Industrial and Engineering Chemistry, Vol. 29, 1937, p. 1247). Drinking Water Standards, etc. (Reprint No. 2440, Public Health Reports, Vol. 58, No. 3, January 15, 1943). , 40 Discussion of Ref. 15, by R. M. Palmer. 9 Official Plumbing Code of the City of Detroit, Article V. 44 Private Communication frOm H. S. Jordan, A.W.W.A. I CHAPTER 43 OWNING AND OPERATING COSTS Fixed Charges: Amortization, Interest, Taxes, Insurance, Rent; Maintenance Costs, Service Costs: Operating Refrigerating Equipment, Condenser Water, Heating The purpose of this chapter is to discuss owning and operating costs of heating, ventilating, and air conditioning systems. The discussion will dwell particularly on air conditioning systems, as most owners or prospec tive purchasers will be interested in comparing the owning and operating costs with the possible investment return due to increased patronage, im proved efficiency of employees, or improvement and maintenance of qual ity in a manufactured product. Owning and Operating Costs may be grouped under three headings: (1) Fixed Charges, (2) Maintenance Costs, and (3) Service Costs, FIXED CHARGES Fixed Charges, which are the costs of owning the system, include: (1) Amnrt.i7at.ion, (2) Interest, (3) Taxes, (4) insurance, and (6) Rent. Amortization Amortization cost will depend on: (1) the total first cost, and (2) the amortization period. The total first cost of an installation is the actual dollar outlay or capital expenditure required to buy and install the air conditioning, or heating and ventilating system ready for operation. It can be divided into two parts: (o) the first cost of the air conditioning or heating and ventilating system itself, and (6) other first costs incurred because of the installation of the air conditioning or heating and ventilating system. The first cost of air conditioning or heating and ventilating systems in cludes the following: 1. Heat producing equipment including boilers, burners, controls, etc. 2. Heat distributing equipment including direct radiation, piping, etc. 3. Air handling equipment including fans, air heaters, air conditioners, filters, controls, etc. 4. Air distribution system including ducts, outlets, grilles, etc. 5. Refrigerating equipment including piping, pumps, etc. 6. Water conservation devices including towers, evaporative condensers, etc. 7. Insulation of pipes, ducts and equipment. The best procedure for establishing the first cost of any system is to first determine the heating and cooling load and then, after a thorough engi neering study, select the type of system. The installed cost of a system will vary between-wide limits depending upon the type of equipment selected, the design of the distribution system, equipment and labor costs in the locality, etc. An approximate cost, within 10 percent, may then be quickly determined for a selected design in a given locality by adding i Si Pi