Johnson Controls York Acoustics
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1 Johnson Controls York Acoustics If you can read this Click on the icon to choose a picture or Reset the slide. To Reset: Right click on the slide thumbnail and select reset slide or choose the Reset button on the Home ribbon (next to the font choice box) If you can read this Click on the icon to choose a picture or Reset the slide. To Reset: Right click on the slide thumbnail and select reset slide or choose the Reset button on the Home ribbon (next to the font choice box) R. Troy Taylor Sound and Vibration Engineer CAV Spring Conference 2017
2 Acoustics Team at Johnson Controls York About me BS Physics, Brigham Young University 2011 MS Acoustics, Penn State University years as an acoustics engineer at Johnson Controls About our Team Engineering services team led by Pat Marks Sound and Vibration team managed by Dale Unger Four full-time engineers Two part-time consulting engineers (retired JCI employees) Two full-time technicians Air handling unit acoustics team led by Curt Eichelberger Two full-time engineers 2
3 Johnson Controls creates intelligent buildings, efficient energy solutions, and integrated infrastructure that work seamlessly together to deliver on the promise of smart cities and communities. Power Solutions Buildings Batteries HVAC Equipment Distributed Energy Storage Security and Fire Safety 3
4 The acoustics and vibration team performs research, product development, testing and evaluation geared to creating and sustaining quiet and reliable chillers and air handling systems for our customers. Variable Geometry Diffuser Varies Width to Match Changing Flow Pin & Diffuser-Ring Motion 4
5 At our current York facility we have a variety of test facilities for acoustic testing of water-cooled chillers, air-cooled chillers and air handling units 5
6 Two hemi-anechoic chambers used for testing water cooled chillers Laboratory Specifications: Large Hemi-Anechoic room: Volume: 41,000 cu-ft TR loading capability Door clearance: 18 wide x 16 high. Room floating on 41 ½ static deflection isolators. 1.7 million pound building weight. Room Qualification to 50 Hz. Small Hemi Anechoic Room: Volume: 18,000 cu-ft. 400 TR loading capability Mechanical Support Equipment Isolation. Special capability: Simultaneous testing of thermal and sound performance in a hemi-anechoic environment. Noise signature testing for US Navy chillers. 6
7 Water cooled chiller measurements done according to AHRI 575 using Mueller BBM data acquisition system AHRI 575 is a method of measuring machinery sound within an equipment space 7
8 There is also a hemi-anechoic room used for acoustic testing of aircooled chillers Laboratory Specifications: Hemi-Anechoic room: Volume: 38,000 cu-ft. 340,000 CFM Quiet Air Supply Support Equipment > 400 TR loading capability Mechanical Support Equipment Isolation Special capability: Simultaneous testing of thermal and sound performance in a hemi-anechoic environment Measurements done according to AHRI Standard 370 8
9 Statistical Energy Analysis models are used for noise predictions of products in development and for changes to existing products SPL Measured Predicted Frequency (Hz) Software: ESI VA One Internal compressor pulsation measurements used as inputs to the model 9
10 Air-handling unit testing Laboratory Specifications: Reverberation room: Volume: 105,000 cu-ft. Apertures: 12 x 12 and 8 x 8 (for duct connections). Door clearance: 14 wide x 14 high (for casing radiated sound). Silencers sized to pass air through the Rev. Rm. (< 0.2 iwg pressure at 100,000 cfm). Analyzer with dual rotating microphone booms for sound measurement. Code Testers: 100,000 cfm code tester, rated at 9 iwg, turn-down to 10% of flow. 30,000 cfm code tester, rated at 9 iwg, turn-down to 10% flow. Special capability: Simultaneous testing of air and sound performance. Test fully assembled AHUs. Test packaged equipment (rooftops, floor-by-floors) Test Standard AHRI
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