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Laboratory Capabilities For Purdue University

Laboratory Capabilities For Purdue University. August 14, 2002. Agenda. Background Overview of Siemens Laboratory Control Options System Management Why Siemens? Discussion. Introductions and Background. Our relationship spans many years. We are committed

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Laboratory Capabilities For Purdue University

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  1. Laboratory Capabilities For Purdue University August 14, 2002

  2. Agenda • Background • Overview of Siemens • Laboratory Control Options • System Management • Why Siemens? • Discussion

  3. Introductions and Background • Our relationship spans many years. We are committed • to helping Purdue now and in the future. Driving Forces at Purdue • State budget crisis • Reducing energy costs • Training and maintaining • Future goals

  4. What makes Siemens different?

  5. K-12 Schools MARKET EXPERTISE We have provided building solutions to more than 20,000 North American locations. High-Tech Manufacturing Higher Education Healthcare

  6. CUSTOMER SATISFACTION #1 in customer satisfaction for 5 consecutive years *Based on a blind survey of the market. Q. “For each building management and control systems you have installed and currently use, indicate your overall level of satisfaction.”

  7. Indiana University Michigan State University Merck Abbott Laboratories U.S. EPA Northwestern University Bristol Myers Squibb Virginia Institute of Tech. Dupont Critical Environment Customers • Ford Motor Company • Monsanto • Harvard University • U.S. DEA • Carleton University • Dow • Los Alamos National Lab • General Motors • Texas A&M

  8. Compatibility by Design Unique in the Industry 1979: 1986: Introduced Insight PC w/s 2002 1992: Modular Building Controllers (MBC) System 600 Introduced 1991:Introduced Laboratory Controls 1997: Modular Equipment Controllers (MEC) 1983: Standalone Control Units 1990:Campus-wide Insight with Ethernet

  9. So many choices, which one is best?

  10. What are the goals of a laboratory ventilation system? Chemical Fume Containment Safe & Proper Lab Room Environment Safe Total Building Environment

  11. Fume Hood Airflow Control Via Siemens Venturi Air Valve 4 Ft2 25 CFM per Ft2 of Work Surface (NFPA 45 & Z9.5) Update Display Panel FPM Control Process: 1. Controller Determines Sash Position VAV Fume Hood Controller Siemens Venturi Air Valve 2. Controller Calculates Total Open Area = Sash Height x Width 400 cfm + Fixed Open Area Airflow Sensor 3. Controller Calculates Req’d. Exhaust = Area Ft2 x Face Velocity (4 Ft2 x 100 Ft/Min = 400 Ft3/Min (400 CFM) 4. Measure Airflow & Compare 5. Position Cone Sash Sensor

  12. Siemens Venturi Air Valve Integrated Airflow Sensor

  13. Siemens Venturi Air Valve Electric Actuator Orifice Plate Airflow Sensor Airflow Measurement Makes SIEMENS Unique ! dP Taps For Airflow Measurement

  14. Phoenix Venturi Air Valve Open Loop Control ! No Airflow Measurement !

  15. Laboratory Ventilation Sources of Sound SUPPLY AIR TERMINAL GENERAL EXHAUST TERMINAL EXHAUST SYSTEM FUME HOOD EXHAUST TERMINAL RADIATED SOUND DISCHARGE SOUND

  16. Acceptable Laboratory Sound Levels TEACHING LAB @ OPEN 35 TO 45 dB FUME HOOD 65 dB RESEARCH LAB AIHA Z9.5: 45 TO 55 dB 85 dB MAX (OFFICE / CONFERENCE ROOM: 25 TO 35 dB)

  17. Why Siemens? -- We matched all key features ! Feature Phoenix Siemens Venturi Air Valve Yes Yes Pressure Independent Yes Yes Linear Yes Yes Proven Design Yes Yes Factory Calibrated Yes Yes Accuracy +/- 5% +/- 5% Response to flow upset Less Than a Second Less Than a Second Turndown Specific to Valve Size Specific to Valve Size Available sizes 8”, 10”, 12” 8”, 10”, 12” Plus 5” & 6” Cone Rod Coating Teflon Teflon Cone Rod Bushings Teflon Teflon Valve Coating for Corrosive Applications Heresite Heresite or Teflonas required Ganged Valves Available Yes Yes External Insulation Yes Yes Slip & Flange Fittings Available Yes Yes

  18. NC Sound Curves 2 3 4 5 6 7

  19. NC Sound Curves

  20. Supply Discharge Sound Calculation NOTES: SUPPLY AIR 1. ASSUME SUPPLY FAN SOUND HAS BEEN ATTENUATED BY SUFFICIENT DISTANCE. TERMINAL 2. MAX SUPPLY AIRFLOW: 1200 CFM, 10" DIA. VAV TERMINAL 3. 10" DIA. LINED FLEX DUCT, 9' LONG FROM TERMINAL OUTLET TO EACH DIFFUSER 4. TWO 24" SQUARE PERFORATED DIFFUSERS 125 250 500 1000 2000 4000 Hz Hz Hz Hz Hz Hz SUPPLY VAV TERMINAL @ 0.5 "WG 71 64 61 57 51 46 ENVIRONMENTAL ADJ. FACTOR: -3 -2 -1 -1 -1 -1 DIVISION TO 2 DIFFUSER DUCTS: -3 -3 -3 -3 -3 -3 -8 -17 -25 -28 -27 -17 LINED FLEX DUCT,10" DIA, 9' LONG: -9 -4 -2 -1 0 0 DUCT END REFLECTION: SOUND POWER LEVEL @ DIFFUSER: 48 38 30 24 20 25 DIFFUSER GENERATED SOUND: 60 54 49 46 44 43 COMBINED SOUND POWER LEVEL: 60 54 49 46 44 43 SPACE EFFECT (20'W X 30'L X 9'H): -5 -6 -7 -8 -9 -10 55 48 42 38 35 33 SOUND PRESSURE LEVEL @ 5'H:

  21. Laboratory Ventilation Air Consumption vs. Type of Hood LARGE BYPASS AREA SASH Constant Volume Bypass FULL EXHAUST AT ALL TIMES AIRFLOW RELATIVELY CONSTANT AT ALL TIMES CAV bypass hood exhaust to remain “essentially unchanged” (less than 5% change)….Z9.5 VERY COSTLY TO OPERATE 6’ FUME HOOD @ 1250 CFM ANNUAL COST*….$3750 to $6250 *Annual average cost of $3 to $5 per CFM FULLY CLOSED 100% OPEN 50% OPEN

  22. Laboratory Ventilation Air Consumption vs. Type of Hood DAMPER W / 2 POSITION CONTROL LARGE BYPASS AREA SASH Constant Volume Bypass - 2 Position EXHAUST REDUCTION DURING UNOCCUPANCY UNOCCUPANCY ROOM CONTROLLER SASH CLOSED • SAME AS REGULAR CAV DURING OCCUPANCY. • AIRFLOW REDUCED TO 20% DURING UNOCCUPANCY. • WORKS IN CONJUNCTION NNWITH SUPPLY AIR REDUCTION. FULLY CLOSED 100% OPEN 50% OPEN

  23. + 100.5 Fume Hood Shutdown Requirements 1. Maintain Required Room Ventilation Rate (ACH). 2. Maintain Room Negative Pressurization if ……..Hazardous Substances Are Present in Room. 3. Remove All Chemicals From Fume Hood. W a r n i n g Fume Hood is Not Operational. Do Not Use ! 4. Post Sign: W a r n i n g Fume Hood is Not Operational. Do Not Use !

  24. CAV 2 - Position Laboratory Ventilation Control ROOM SUPPLY AIR TERMINAL UNOCCUPIED EXHAUSTAIRFLOW SUPPLY AIRFLOW CAV 2 - POSITION CONTROLLER ROOM CONTROLLER INFLOW FROM ADJACENT AREAS Laboratory Room CAV FUME HOOD

  25. Laboratory Ventilation Air Consumption vs. Type of Hood Variable Air Volume EXHAUST MODULATION FOR CONSTANT FACE VELOCITY VAV FUME HOOD FACE VELOCITY CONTROL BY SASH SENSING RESTRICTED BYPASS SASH SASH POSITION • AIRFLOW CONTROLLED TO ENSURE CONSTANT FACE VELOCITY. • AIRFLOW REDUCED TO 20% WHEN SASH IS FULLY CLOSED. • COST OF OPERATION TYPICALLY 40% OF CAV BYPASS FUME HOOD FULLY CLOSED 100% OPEN 50% OPEN • ALSO REQUIRES VAV ROOM VENTILATION CONTROL.

  26. VAV Laboratory Ventilation Control ROOM SUPPLY AIR TERMINAL ROOM CONTROLLER SUPPLY AIRFLOW EXHAUST AIRFLOW VAV FUME HOOD CONTROLLERS EXHAUST Laboratory Room INFLOW FROM ADJACENT AREAS VAV FUME HOODS

  27. OCCUPIED UNOCCUPIED Air Consumption vs. Type of System A I R U S A G E CAV (1 POSITION) CAV (2 POSITION) VAV

  28. CAV $12.00 $10.00 2-POS CAV $8.00 $6.00 VAV $4.00 $2.00 $0.00 Laboratory Facility Annual Energy Expense Per Sq. Ft. Ventilation Control Scenario

  29. Diff. Pressure Sensing Airflow Tracking Laboratory Room Ventilation Negative Room Pressurization Inward Airflow =  Airflow Tracking Airflow Tracking EXHAUST SUPPLY

  30. Room P depends upon: E X H A U S T S U P P L Y P Room Pressurization Dynamics 1. DIFFERENTIAL AIRFLOW (DA) CFM 2. ROOM LEAKAGE AREA (A) Sq. Ft. ROOM SIZE = (DA ÷ 2610 A )2 * * 1999 ASHRAE Handbook - HVAC Applications - Page 51.5

  31. 0.02 0.2 sq. ft. 0.5 sq. ft. 1.0 sq. ft. P IN. H20 Room Differential Airflow Room Differential Pressure 0.01 DOOR OPEN 0.00 Laboratory Room Ventilation Room Pressurization Dynamics 0.2 sq. ft. 0.5 sq. ft. 1.0 sq. ft. “Tight” Room - - -“Average”- - - Room 25 CFM 25 CFM 0 100 200 300 400 DIFFERENTIAL AIRFLOW - CFM

  32. Laboratory Room Ventilation Room Pressurization Control Comparison DP Sensing Airflow Tracking Airflow Tracking Supply & Exhaust Airflow Sensing DP Sensor in Wall Signal Unaffected By Normal Activities Signal Affected By Doors, People, Wind, Temp, etc. Enables Fast Fume Hood Control Response Delays Fume Hood Control Response Control Action Doesn’t Affect Building Air Balance Control Action Affects Building Air Balance

  33. System Management

  34. Laboratory Ventilation Floor Level Network LABORATORY ROOM LABORATORY ROOM FLOOR LEVEL NETWORK (FLN)

  35. System 600 APOGEE Architecture Floor Level Network (FLN) Building Controller

  36. System 600 APOGEE Architecture Building Level Network (BLN) Building Level Network (BLN) Central Monitoring & Control • Dynamic Graphics • Alarm Monitoring Apogee Insight Workstation • System-Wide Control • Status Reports

  37. System 600 APOGEE Dynamic Graphics FUME HOOD 046 SASH HEIGHT 0 Inches SASH HEIGHT 18 Inches SASH HEIGHT 28 Inches EXHAUST 525 CFM EXHAUST 250 CFM EXHAUST 800 CFM FACE VELOCITY 103 Ft./Min. FACE VELOCITY NORMAL FACE VELOCITY 64 Ft./Min.

  38. FUME HOOD 046 SASH HEIGHT 16 Inches FACE VEL. 103 FPM Integration • Siemens can utilize existing Phoenix Air Valves with existing electric actuators or with a Siemens electric actuator. • Siemens would add airflow measurement to enhance performance. • Siemens laboratory controls can be integrated into the existing Automated Logic system utilizing Bacnet.

  39. Why Siemens?

  40. Key Benefits to Purdue • Reduce capital expenditures through competitive bid process • Reduce operational expenditures • Reduced training costs • Shorter learning curve for maintenance staff • Single source responsibility • Backward and forward compatibility • Support (e.g., service, training)

  41. Thank You

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