Siemens Industry, Inc. Industry Automation Sensors & Communication Process Instrumentation & Analytics Clamp-on Ultrasonic Flowmeters – “How they Measure Up” Siemens Siemens Industry,AG Inc. 2011. 2011. AllAllrights rightsreserved. reserved. U.S./Industry Automation/SC/Process Instrumentation & Analytics About the speaker Martin Dingman is a product manager for Siemens Industry, Inc.‟s U.S. Clamp-on Ultrasonic Flow Meter line. He started with Controlotron in 1991, giving him more than 19 years of experience in the flow instrumentation field, where he has served in a variety of manufacturing, engineering project management and sales roles. His expertise includes flow applications in various industries including HVAC, oil and gas, water and wastewater, and power. Siemens Industry, Inc. 2011. All rights reserved. U.S./Industry Automation/SC/Process Instrumentation & Analytics Agenda Clamp-on Ultrasonic Flowmeters – “How they Measure Up” 1. Brief introduction to Clamp-on Ultrasonic flow technology 2. Key features of non-intrusive measurement in HVAC 3. Applications 4. Not just a flowmeter - Useful Diagnostics 5. Geothermal Case Study Siemens Industry, Inc. 2011. All rights reserved. U.S./Industry Automation/SC/Process Instrumentation & Analytics Clamp-on Non-Intrusive Flowmeter Technology Transducer is both transmitter and receiver. Transit Time Upstream direction, tup Downstream direction, tdn tup = Ultrasound is Decelerated by Flow tdn = Ultrasound is Accelerated by Flow t = Proportional to Fluid Velocity Equations Area = ID 2 2 Q = VA Siemens Industry, Inc. 2011. All rights reserved. U.S./Industry Automation/SC/Process Instrumentation & Analytics Clamp-on Non-Intrusive Flowmeters for HVAC Non-Intrusive Technology No Need to Cut Pipes No Process Shutdown for Installation Low Installation Costs No Pressure Drop or Energy Loss Measure Pipes From ¼” – 360” Price independent of line size Wide Turn-Down Ratio Portable / Permanent Measure flow & BTU Data Logging Multiple Channel Capability Measure multiple pipes simultaneously Measure clean or dirty liquids Transit-Time & Doppler Application Diagnostics Siemens Industry, Inc. 2011. All rights reserved. U.S./Industry Automation/SC/Process Instrumentation & Analytics Clamp-on Non-Intrusive Flowmeters for HVAC Flow Display Computer CuFT / HR 12.54 1 4 7 2 5 8 SIEMENS SITRANS 3 6 9 Transducer Cable Pair RTD Cable Ultrasonic Clamp -on Transducers Mounting Assembly Spacer Bar RTD Transducer and Mount PIPE Mounting Strap Kit Siemens Industry, Inc. 2011. All rights reserved. U.S./Industry Automation/SC/Process Instrumentation & Analytics Application - Balancing Condenser water makeup CHILLED WATER COOLING TOWERS F F Clamp-on Ultrasonic's used to balance a hot or chilled water sytem F FCU T 1) No intrusion into the pipe T F 15ºC 42°F 2) Measure lines that do not have circuit AHU AHU balancing valves T T RETURN AIR FAN 3) Measure multiple lines simultaneously F F T F T MAIN RISER RETURN 9 - 12 ºC MAIN RISER FEED 6ºC 1) Measure and add multiple branches when main line is not available 15ºC 15ºC 42°F 42°F 2) Primary, Secondary, and Tertiary flows T F PRIMARY CHILLED 3) condenser flows – regulate to design conditions AHU Measure evaporator and WATER PUMPS T CONDENSER WATER 35ºC 4) Recirculation loop on boilers 95°F CHILLER 3 CHILLER 2 SECONDARY 5) Commissioning / Recommisioning CHILLED CHILLER 1 1) ensure minimum design flow requirements are met 15ºC 42°F CONDENSER T EVAPORATOR F CONDENSER WATER PUMPS WATER PUMPS 6) Data logging for reporting and analysis F F F F RETURN CONDENSER WATER 30ºC 85°F Siemens Industry, Inc. 2011. All rights reserved. U.S./Industry Automation/SC/Process Instrumentation & Analytics Application – Thermal Energy Measurement Transmitter Clamp-on Ultrasonic's used to measure Thermal Energy Use DANFOSS EFC3500 1) No intrusion into the pipe 2) Measure CHW / HW for billing Temperature 1) As opposed to square footage or apportionment 2) Flow Measurement– Awareness Sensor (RTD) Curb unnecessary energy use 3) Meter verification using portable flowmeters Temperature Sensor 1) Verify existing meter performance 4) Calculate energy usage / efficiency 5) Help achieve LEED status Air Handling Unit or Fan Coil Unit Siemens Industry, Inc. 2011. All rights reserved. U.S./Industry Automation/SC/Process Instrumentation & Analytics Diagnostics VS – Speed of Sound Ultrasonic Flowmeters measure the speed of sound of the fluid and can report changes in temperature and/or other properties 1800 1750 1700 20% Sonic Velocity (m/s) 25% 1650 30% 35% 40% 45% 1600 50% 55% 1550 1500 1450 -40 -20 0 20 40 60 80 100 Temperature (Degrees F) Siemens Industry, Inc. 2011. All rights reserved. U.S./Industry Automation/SC/Process Instrumentation & Analytics Diagnostics AER – Aeration Ultrasonic Flowmeters provide the indication of entrained air in a hydronic system Effects of Aeration: -Poor energy transfer -Reduce efficiency -Valve damage -Indication of particulate Siemens Industry, Inc. 2011. All rights reserved. U.S./Industry Automation/SC/Process Instrumentation & Analytics Case Study – Geothermal Heat Exchange A country club located in New York is saving more than $100K annually after optimizing their Geothermal Heat Exchange System. Background: - Providing Heating and Cooling 450 water sourced heat pumps Since inception, the system was not fully functional Received constant complaints - Not enough heating and cooling - Incurring unnecessary costs due to the need to use boilers Siemens Industry, Inc. 2011. All rights reserved. U.S./Industry Automation/SC/Process Instrumentation & Analytics Case Study – Geothermal Heat Exchange A country club located in New York is saving more than $100K annually after optimizing their Geothermal Heat Exchange System. Problem: - - Discovered two problems - Delta T less than 4ºF - Insufficient heat exchange Flow was 50%, out of specification - Laminar flow, “boundary layer” Laminar Flow RN factor 0 . 78 ( approx ) Turbulent Flow RN factor ` 0 . 95 (approx ) Plug flow RN factor 1 . 00 ( approx ) Non-Intrusive measurement of both Temperature and Flow Siemens Industry, Inc. 2011. All rights reserved. U.S./Industry Automation/SC/Process Instrumentation & Analytics Case Study – Geothermal Heat Exchange A country club located in New York is saving more than $100K annually after optimizing their Geothermal Heat Exchange System. Solution: - Remove „Boundary Layer” - Turbulent flow required Turbulent flow provided: (replaced pumps) - Increased flow - Optimal heat transfer Laminar Flow RN factor 0 . 78 ( approx ) Turbulent Flow RN factor ` 0 . 95 (approx ) Plug flow RN factor 1 . 00 ( approx ) Non-Intrusive measurement of both Temperature and Flow Siemens Industry, Inc. 2011. All rights reserved. U.S./Industry Automation/SC/Process Instrumentation & Analytics IDEA Magazine Article http://www.districtenergy-digital.org/districtenergy/2010Q3?folio=13#pg15 Siemens Industry, Inc. 2011. All rights reserved. U.S./Industry Automation/SC/Process Instrumentation & Analytics Thank you for attending! Martin Dingman Product Manager, Clamp-on ultrasonic flowmeters Siemens Industry, Inc. 155 Plant Avenue Hauppauge, NY 11788 Office: (631) 231-3600 ext.1215 Mobile: (631) 764-1344 martin.dingman@siemens.com http://www.linkedin.com/pub/martin-dingman/15/809/310 http://twitter.com/martinjd1 Siemens Industry, Inc. 2011. All rights reserved. U.S./Industry Automation/SC/Process Instrumentation & Analytics