Document 9Jpjp3j9RDr62GwrOmxw58v5q

786 CHAPTER 30 1958 Guide be no interference with the movement of air throughout its entire path from the high velocity nozzles to the front of the theater. The ceiling should be smooth, without projecting beams or obstructing ornamentation. For large theaters, relatively high velocities can be used. These will work satisfac torily if adjustable outlets are used to avoid areas of local turbulence. In small or medium size theaters, it is sometimes practicable to use side wall or front wall distribution. For the satisfactory operation of such a A. Rear Wall. High-outlet velocity, satisfactory if properly designed; possibility of excessive air motion and drafts if used for wrong application. B. Front Wall. High outlet velocity, results same as A. C. Front and Rear Wall*. Moderate room air motion, outlet blows should not impinge giving rise to down drafts in oenter. D. Center. Moderate air motion, no impingement of air streams. Good results. E. One Side. Moderate room air motion; should blow toward exposed wall. Good results. F. Ceiling. Low room air motion. Good results. Outlets should be selected of sufficient sire to allow for blocking when not located in perfect squares. system during the winter heating period, the returns should preferably be located at the floor level and near the front of the theater to prevent cold spots resulting from exposed wall convection or infiltration from exits. For multi-room buildings diagrams shown in Fig 16 illustrate distribution methods for small rooms with exposed wall, such as offices, hotel (guest) rooms, hospital (patients) rooms, apartments, etc. For a small store the cooling performance of various distribution methods is illustrated in Fig. 17. REFERENCES 1 Ventilation Jets in Room Air Distribution, by H. B. Nottage. Originally sub mitted as a Ph.D. thesis,to Case Institute of Technology. (3 volumes) Loan copies available from ASHAE Research Laboratory. (a) Volume I: Data and interpretations of tests for ventilation jets discharging horizontally into a large confining space. 131 pages + 67 fig. + 9 tables. (b) Volume II: Appendix A. Survey of the literature on the problems of ventila tion jets and the related fundamentals of turbulent flow. 499 pages incl. ngsand tables. (c) Volume III: Appendixes B to H. General features of the experimental installa tions, instrumentation, and operations, boundary-layer theory and workenergy treatment. (142 pages incl. figures). " ASHVE Research Report, No. 1476--Air Velocities in Ventilating Jets, by, G. L. Tuve (ASHVE Transactions, Vol. 59,1953, p. 261). * Air Flow at Discharge of Fan-Pipe Lines in Mines, by G. E. McElroy (U Bureau of Mines Report of Investigations R. I. 3730. November 1943, p. 19.) K. Air Distribution 787 * ASHVE Research Report No. 1404--Comparative Study of Ventilating Jets from Various Types of Outlets, by Alfred Koestel, Philip Hermann, and G. L. Tuve (ASHVE Transactions, Vol. 56, 1950, p. 459). Throw of Air from Slots and Jets, by R. D. Madison and W. R. Elliot (ASHVE Journal Section, Heating, Piping & Air Conditioning, November 1946, p. 108). " ASHVE Research Report No. 1328--The Discharge of Air from a Long Slot, by Alfred Koestel and G. L. Tuve (ASHVE Transactions, Vol. 54, 1948, p. 87). 7 ASHVE Research Report, No. 1429--The Control of Air Streams from a Long Slot, by Alfred Koestel and C. Y. Young (ASHVE Transactions, Vol. 57, 1951, p. 407). "ASHVE Research Report No. 1366--Air Streams from Perforated.Panels, by Alfred Koestel, Philip Hermann, and G. L. Tuve (ASHVE Transactions, Vol. 55, 1949, p. 283). ASHVE Research Report, No. 1443--Isothermal Ventilation--Jet Funda mentals, by H. B. Nottage, J. G. Slaby and W. P. Gojsza (ASHVE Transactions, Vol. 58, 1952, p. 107). 10 Entrainment in Ventilating Jets, unpublished'paper (Case Institute of Tech nology). 11 Computation Charts and Theory for Rectangular and Circular Jets, by Harold G. Elrod, Jr. (ASHVE Transactions, Vol. 60,1954, p. 431). 17 ASHVE Research Report No. 1155--The Performance of Stack Heads, by D. W. Nelson, D. H. Krans and A. F. Tuthill (ASHVE Transactions, Vol. 46,1940. p. 205). ^IIVE Research Report No. 1206--Performance of Stack Heads Equipped with Grilles, by D. W. Nelson, D. H. Lamb and G. E. Smedberg (ASHVE Transac tions, Vol. 48, 1942, p. 279). 14 4??^^ Research Report No. 1226--Performance of Side Outlets on HoriDucts, by D. W. Nelson and G. E. Smedberg (ASHVE Transactions, Vol. 49, 1943, p. 58). BIBLIOGRAPHY ,. Many theoretical papers on air jets have been published which--though Highly interesting and even fascinating to the specialist--are of little value to the practicing engineer. This guide to the literature on air distribution is, therefore, purposely restricted to papers resulting from research sponsored by The American society of Heating and Air-Conditioning Engineers and other papers of interest to engineers which are easily accessible to them. For an excellent survey of the enure literature the reader is referred to Reference 1. ASHAE Research Laboratory tio4S)!? Re8S)reh * Air Distribution and Air Duct Friction, by Cyril Tasker. (ASHVE Journal SecPiping & Air Conditioning, April 1948, p. 125). The fnlpTOi Research Report--Ventilation Jets in Air Distribution, by H. B. Nottsge (See Reference 1). ASH ^ papere hMwl on "hi report have been published: H. B Keport No. 1360--Turbulence--A Fundamental Frontier in Air Distribution, by ASHVF (ASHVE Transactions. Vol. 55, 1949, p. 193). (ASHVF ASHVp Report No. 1402--A Simple Heated-Thermooouple Anemometer, by H. B. Nottage "'0TM Vo1' 56, 1950, p. 431). G. Slabv Report No. 1443--Isothermal Ventilation-Jet Fundamentals, by H. B. Nottase, J. ASHVFd W' R GiSZa (ASHVE Transactions, Vo!. 58, 1952, p. 107). W. P. GoiSa (AKHtn? Repost No. 1441--A V-Wire Direction Probe, by H. B. Nottase, J. G. Slaby and ASHVF lASHVE Transactions, Vol. 58, 1952, p. 79). Flow, bv R Research Report No. 1458--Outlet Turbulence Intensity as a Factor in Isothermal-Jet ASHVE p Nottage, J, G. Slaby, and W. P. Gojsza (ASHVE Transactions, Vol. 58,1952, p. 543). Room Air Report No. 1461--A Smoke-Filament Technique for Experimental Research in 1952, p. 3My nbutl0n' by H- B- Nottage, J. G. Slaby, and W. P. Gojssa (ASHVE Transactions, Vol. 58. P. Ckiislf Repnr No. 1459--Exploration of a Chilled Jet. by H. B. Nottage. J. G. Slaby, and W. tASHVE Transactions, Vol. 58, 1952, p. 357). SHAE Cooperative Research at Case Institute of Technology ASHVE ft w and L. J. BeiWAlm?TO Sf081 No. 1140--The Use of Air Velocity Meters, by G. L. Tuve, D. K. Wright, Jr. ASHVE r WSHVE Transactions, Vol. 45, 1939, p. 645). and Grilles kvEf'EATRc^ Report No. 1162--Air Flow Measurements at Intake and Discharge Openings ' y L* Tuve and D. K. Wright, Jr. (ASHVE Transactions, Vol. 46, 1940, p. 313).