Document zdj69XxKm9zKXmMLaa0L0gzE3

Copyright i960 BY THE American Society of heating, Refrigerating and Air-Conditioning Engineers, Inc. and by it Dedicated To the Advancement of The profession and Its Allied Industries TEXT' AND ILLUSTRATIONS ARE FULLY PRO TECTED BY.'CaRVRIGHT; ANbl.NOTHING THAT APPEARS MAY-BE REPRINTED'EITHER WHOLLY OR IN PART fWITHOUT'SPECIAL PERMISSION. Printed and Bound by Waverlt Press, Inc. BALTIMORE MARYLAND PREFACE TO THE 38th EDITION The Heating Ventilating Air Conditioning Guide, U-Values for building constructions which include high- 1960 contains a Technical Data Section of 792 pages and conductivity members. therefore, is the largest in a series which has now reached 38 Chapter It--Heating Load. Temperature design data were editions. The increase in new technical text is considerably added for 9 cities in Alaska as prepared from U. S. Weather greater than the 24 pages added because space for new text Bureau records. was obtained in many places throughout the book by con Chapter 14--Radiators, Convectors, Baseboard and Pinned- densation and revision of previous text. Tube Units. Rating method information was brought into The previous grouping of chapters in twelve sections has conformity with latest standards used by manufacturers. been retained as follows: I--Fundamentals, II--Environ Chapter 17--Electric Heating. Several sections referring to ment, Comfort, and Physiological Principles, III--Heating use of electric beaters were revised. and Cooling Loads, IV--Room Heating and Cooling Meth Chapter 18--Warm Air Heating Systems. The entire chap ods and Equipment, V--Air Systems and Equipment, VI-- ter was reviewed to permit changes in application resulting Steam and Water Systems and Equipment, VII--Heat Gen from NWAHAACA experience. New diagrams were added erating Methods and Equipment, VIII--Refrigeration, to show duct length equivalent of fittings aod intakes. Pre Spray Apparatus, and Sorbents, IX--Controls, Instru- - cautions for starting up perimeter systems were added. ments, and Motors, X--Specific Applications, XI--Indus Chapter 19--Central Systems for Air Conditioning. The trial Systems, and XII--General. section on Zoning and Zone Control was rewritten. Dia Some of the outstanding improvements to be found in this grams and text for high-pressure systems as well as for the edition include (1) a rewritten chapter on thermodynamics dual-duct systems were improved. to facilitate explanation and solution of problems dealing Chapter 85--Sound Control. As a result of a critical review with control of environment in occupied spaces, (2) exten by the Society's Research Advisory Committee on Sound sive revision of text and improvement of illustrations io the Control this chapter was revised extensively and eight illus chapter on sound control, (3) new data od restaurant hot trations were improved. water requirements and method of rising storage tanks, Chapter 86--Steam Healing Systems. Eight illustrations coils, and heaters, (4) a new section dealing with funda were improved as a result of review by the Research Ad mentals, detection, and elimination of odors, (5) extension visory Committee on Hot Water and Steam Heating and of winter design temperatures to 9 Alaskan cities, (6) new others. Precautions were added with regard to piping for data on equivalent duct lengths for sheet metal fittings,.(7) blast heaters. additional information on heat gain of insulated-cold pipe Chapter SI--Pipe, Fittings, Welding. Some extensions were and on loss from tarnished copper tube, (8) a new chart and made in the table on applications of pipe, tube, and fittings. table for selection of chimney sizes for automatically fired Chapter 39--Industrial Insulation. Revised tables were boilers, (9) revised data on treatment of water for preven provided to show heat gain of insulated cold pipe and also tion of corrosion and scale, (10) maximum allowable con beat loss of.tarnished copper tube. centration of air contaminants adjusted to values adopted Chapter SS--Fuels and Combustion. A new table was added by the ACGIH in 1959, (11) many new illustrations of auto to Bhow'characteristics of natural gas distributed in various matic control arrangements for air-conditiooing systems, large cities. The text dealing with gaseous fuels was brought (12) a rewritten chapter on residential air conditioning, (13) up to date. rating data for steel boilers, packaged units, and furnaces Chapter S4--Automatic Fuel-Burning Equipment. A new revised to meet recent changes in rating methods, (14) new section on operating controls for commercial and industrial data on operating controls for oil burners, and (15) a new as well as domestic oil burners was provided. Flow capaci table of flow capacities of gas piping. ties of gas piping are shown in a new table. Extensive revi The significant changes in the various chapters are as sions were made in the text. follows: Chapter 85--Heating Boilers, Furnaces, Space Healers. Chapter 8--Thermodynamics. The text was rewritten to Most recent methods of rating boilers and packaged units by improve the presentation for students of air conditioning SBI, IBR, and ABAI standards were inserted together with and to facilitate solution of problems dealing with control tabulated ratings. Suggestions were improved for cleaning, of environmental conditions by means of circulated treated and maintenance of boilers and systems. The portion of the air. Many new illustrations and new problems were added. chapter dealing with warm air furnaces was rewritten with The Goff and Gratcb tables on thermodynamic properties of new discussion of ratings, heat exchangers, equipment, com moist air and those on water were retained with the same ponents, and controls. completeness as in the previous edition. Chapter 86--Chimneys and Draft Calculations. A new chart Chapter 7--Air Contaminants. The tables of maximum al and table were added for selection of chimney size for auto lowable contaminants were brought up to date with the 1959 matically fired, intermittently operated heating and process recommendations of the American Conference of Govern boilers. A section on gas appliance venting was added to mental Industrial Hygienists. A new enlarged section od bring information in agreement with latest practice of odors and odor control was added. GAMA and NFPA. Chapter 9--Heat Transmission Coefficients of Building Ma Chapter 88--Refrigeration. A section was added on control terials. A new method was presented for calculating overall of absorption refrigeration systems.