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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T. K. Faison, Joseph C. Davis, Paul R. Achenbach. ARCHITECTURE TH 7 .058 no27 B 916,966 QUADRANT PARTITION QUADRANT AIR MIXER QUADRANTS END HERE MEASURING STATION. Front Cover.
T. K. Faison, Joseph C. Davis, Paul R. Achenbach. ARCHITECTURE TH 7 .058 no27 B 916,966 QUADRANT PARTITION QUADRANT AIR MIXER QUADRANTS END HERE MEASURING STATION. Front Cover.
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... mixing devices 3.1 . Louvered strip 3.2 . Louver - baffle 3.3 . Concentric louver 4. Performance 1 13 3 3 3 4 4 5 4.1 . Louvered strip 5 4.2 . Louver - baffle 8 4.3 . Concentric louver 13 4.3.1 Applications of the concentric louver mixer ...
... mixing devices 3.1 . Louvered strip 3.2 . Louver - baffle 3.3 . Concentric louver 4. Performance 1 13 3 3 3 4 4 5 4.1 . Louvered strip 5 4.2 . Louver - baffle 8 4.3 . Concentric louver 13 4.3.1 Applications of the concentric louver mixer ...
Page 1
... devices covered in this report contain combinations of louvers ( directing vanes ) and baffles as mixing elements . Two of the devices were designed at the National Bureau of Standards ; the third was a modification of a previous design ...
... devices covered in this report contain combinations of louvers ( directing vanes ) and baffles as mixing elements . Two of the devices were designed at the National Bureau of Standards ; the third was a modification of a previous design ...
Page 2
... mixing apparatus used to produce the test condition and house the mixing devices to be evaluated . T AND 1 REPRESENT AREAS OF AN AIR STREAM AT. QUADRANT PARTITION QUADRANT AIR MIXER QUADRANTS END HERE MEASURING STATION # B WATER VAPOR ...
... mixing apparatus used to produce the test condition and house the mixing devices to be evaluated . T AND 1 REPRESENT AREAS OF AN AIR STREAM AT. QUADRANT PARTITION QUADRANT AIR MIXER QUADRANTS END HERE MEASURING STATION # B WATER VAPOR ...
Page 3
... louvers for deflecting the air from its normal path . Louvers were designed so that FIGURE 4. A view of the louvered strip mixing device 3 Instrumentation Conditioning and control Description of mixing devices Louvered strip.
... louvers for deflecting the air from its normal path . Louvers were designed so that FIGURE 4. A view of the louvered strip mixing device 3 Instrumentation Conditioning and control Description of mixing devices Louvered strip.
Common terms and phrases
0.92 duct diameter 4.75 DUCT DIAMETERS air flow Air Mixers air passed AIR STREAM VELOCITY apparatus 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 Drop Across Mixer Duct Diam DUCT DIAMETERS MEAN duct wall elements in series evaluated 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 mixing elements National Bureau normal path outer area overall distance 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 PATTERN THREE test conditions THERMOCOUPLES THREE QUADRANTS WARM tion ture 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...