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 = VA
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