Performance of Louvered Devices as Air MixersU.S. National Bureau of Standards, 1970 - 20 pages As part of a study evaluating methods for reducing thermal gradients within the cross section of an air stream, three louvered mixing devices were investigated. Each of these devices was found to be capable of reducing the cross-sectional nonuniformity of air temperature to a few percent of the entering value. |
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Page
... Resistance for Built - Up Membranes . 20 cents BSS10 . Field Burnout Tests of Apartment Dwelling Units . 25 cents BSS11 . Fire Resistance of Steel Deck Floor Assemblies . 25 cents BSS12 . Performance of Square - Edged Orifices and ...
... Resistance for Built - Up Membranes . 20 cents BSS10 . Field Burnout Tests of Apartment Dwelling Units . 25 cents BSS11 . Fire Resistance of Steel Deck Floor Assemblies . 25 cents BSS12 . Performance of Square - Edged Orifices and ...
Page 2
... resistance heaters in each of the spaces to produce and maintain selected conditions of temperature . Immediately following the conditioning section of the apparatus , a measuring station was posi- tioned for determining the temperature ...
... resistance heaters in each of the spaces to produce and maintain selected conditions of temperature . Immediately following the conditioning section of the apparatus , a measuring station was posi- tioned for determining the temperature ...
Page 3
... resistance heaters posi- tioned in a circular pattern around the periphery of the duct near the duct wall were used to produce concentric temperature pat- terns . was In this study , three types of mixers were in- vestigated : louvered ...
... resistance heaters posi- tioned in a circular pattern around the periphery of the duct near the duct wall were used to produce concentric temperature pat- terns . was In this study , three types of mixers were in- vestigated : louvered ...
Page 15
... resistance thermometer , due to the radiation from the heated walls , was then determined EFFECTIVENESS ( % ) 100 90 80 100 200 O CONCENTRIC TEMPERATURE PATTERN △ QUADRANT TEMPERATURE PATTERN ( THREE QUADRANTS WARM AND ONE QUADRANT ...
... resistance thermometer , due to the radiation from the heated walls , was then determined EFFECTIVENESS ( % ) 100 90 80 100 200 O CONCENTRIC TEMPERATURE PATTERN △ QUADRANT TEMPERATURE PATTERN ( THREE QUADRANTS WARM AND ONE QUADRANT ...
Page 16
T. K. Faison, Joseph C. Davis, Paul R. Achenbach. 2 ' RESISTANCE HEATER CABLES CHROMEL P - CONSTANTAN THERMOCOUPLES FOR MONITORING AIR MIXING ( 17 THERMOCOUPLES IN EACH ARRAY ) , The performance of three types of air temperature sensing ...
T. K. Faison, Joseph C. Davis, Paul R. Achenbach. 2 ' RESISTANCE HEATER CABLES CHROMEL P - CONSTANTAN THERMOCOUPLES FOR MONITORING AIR MIXING ( 17 THERMOCOUPLES IN EACH ARRAY ) , The performance of three types of air temperature sensing ...
Common terms and phrases
0.92 duct diameter 4.75 DUCT DIAMETERS air flow Air Mixers air passed AIR STREAM VELOCITY apparatus ASHRAE automatic data processing baffles blower Building Science Series Bureau of Standards cents circular band concentric louver mixing CONCENTRIC TEMPERATURE PATTERN cross section deg F Devices as Air DIAMETER DUCT FPM DIAMETERS MEAN VELOCITY direct the air DISTANCE BETWEEN MIXING downstream measuring station Duct Diam DUCT DIAMETERS MEAN duct wall elements in series evaluated FIGURE 17 flow rate held constant louver angle louver mixing device LOUVER SETTING louver-baffle mixing device louvered strip mixing MEAN AIR STREAM ment metal mixing effectiveness National Bureau normal path outer area path of flow PATTERN THREE QUADRANTS percent pitot-static tubes QUADRANT COOL QUADRANT TEMPERATURE PATTERN Resistance Thermometer shown in figure spacing between mixing standard deviation strip mixer strip mixing device tempera temperature difference TEMPERATURE PATTERN THREE test conditions THERMOCOUPLES THREE QUADRANTS WARM tion ture U.S. Government Printing velocity head
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Page 1 - A schematic of the apparatus is shown in figure 1. Figure 2 is a photograph of the apparatus.
Page 20 - Announcement of New Publications in Building Science Series Superintendent of Documents, US Government Printing Office, Washington, DC 20402 Dear Sir: Please add my name to the announcement list of new publications to be issued in the series : National Bureau of Standards Building Science Series. Name Company Address City State Zip Code (Notification key N-339...