next generation belimo energy valve
DESCRIPTION
Next Generation Belimo Energy Valve. Belimo Energy Valve ™. The Energy Valve is a pressure independent control valve with an integrated BTU meter Measure Energy Control Power Manage Delta T. Belimo Energy Valve ™. BACnet. Actuator. Flow Sensor. Valve. - PowerPoint PPT PresentationTRANSCRIPT
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1Belimo Americas Danbury, Connecticut
Belimo Energy Valve™
Investing inEfficiency
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Chiller Plants Overall Energy Efficiency
2Belimo Americas Danbury, Connecticut
Source:
Plant Manufacturer Chiller Plant Efficiency Coefficient♦
A (Office) 4.26
B (Museum) 4.78
C (Bank) 3.15
D (Office) 3.87
Average Chiller Plant Efficiency Coefficient♦
2.02
2.87
2.14
0.84
Actual Delta T [F]
2.4
2.8
3.6
0.7
♦ Higher Efficiency Coefficient reflects higher plant efficiency
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Chiller Plants Overall Electric Consumption
3Belimo Americas Danbury, Connecticut
Chillers Avg51%
Pumps Avg
25.5%
Plant A (Office)
Plant D (Office)Plant C (Bank)
Plant B (Museum)
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US Cooling Energy Usage
4Belimo Americas Danbury, Connecticut
15%
85%
Cooling EnergyOther US Residential & Commercial Electric Energy
Source: US Energy Information Administration (eia)How much electricity is used for cooling in the United States?(www.eia.gov/tools/faqs/faq.cfm?id=98&t=3)
11%
89%
Cooling Energy Other US Electric Energy
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Belimo Energy Valve™is the Solution
5Belimo Americas Danbury, Connecticut
The Energy Valve is a:Pressure Independent
Control Valve
with an integrated Delta T Manager
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Belimo Energy Valve™
6Belimo Americas Danbury, Connecticut
• Chilled Water Plant Energy Consumption• Energy Valve Benefits and Features• Risk Free Investment• Savings Estimator• Case Studies• www.energyvalve.com
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Pressure Dependent 240 GPM
144 GPM
96 GPM
Pressure Independent (PI)
Delta T Manager + PI
Pressure Independent and Delta T ManagerPump Savings in Large Tech Company in NC
♦ Pressure Independent♦ Pressure Dependent
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Benefits of Energy Valve
8Belimo Americas Danbury, Connecticut
• Saves on Pump • and Chiller Energy
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0 5 10 15 20 25 30 35 40 45 50 55 60 65 70 75 801
50001
100001
150001
200001
250001
300001
350001
0
2
4
6
8
10
12
GPM
Pow
er =
kB
TU/h
r
Del
ta T
°F
335
10.5°F
65 GPM
12°F
55 GPM
330
CoilPower Curve
Delta T Curve
1
2
Benefits of using Energy ValveSave Energy
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Pump hp Hp increase = (65/55)3 65%
1 2 ΔkBTU/hr 330 335 1.5%GPM 55 GPM 65 GPM 18%
3
1
2
1
2
GPMGPM
HPHP
Low Delta TCost of Overflowing the Coil…
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Low Delta TCost of Chiller Staging
Chiller Plant Efficiency
• Design delta T=12oF (54oF - 42oF)
• 360 GPM
• 1 Chiller, 90% Load (180 Ton)
Design Condition
360 GPM Loop flow
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Chiller Plant Efficiency
A drop in delta T causes more GPM
Low delta T
• Delta T=10.4oF (52.4oF - 42oF)
• 415 GPM• 2 Chillers, 45% Load (180 Ton)
No change to the load, but a 2nd Pump and 2nd Chiller are started.If cooling towers exist, additional cooling tower and pump may start.
415 GPM Loop flow
Low Delta TCost of Chiller Staging
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Features of Energy Valve
13Belimo Americas Danbury, Connecticut
• Power Control maintains coil power regardless of system variations
• Built-in Energy Metering• Multiple Communication
Options
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Power ControlDefinition
What is Power Control ?• A control algorithm that
creates a Linear relationship between control signal and kBTU/hr output
• Power Control maintains a coil power set point regardless of pressure and temperature fluctuations
Control Signal
0 10
00
0V 10V
Coi
l Pow
er (k
BTU
/hr)
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• Power Control allows the controller to deliver exact energy to the space• 0 to 10 VDC = 0 to 100% kBTU/hr Capacity
Coi
l Pow
er (k
BTU
/hr)
0V 10VControl Signal
0 10
00
3V30
0
Example: 83 Ton AHU83 Tons ~ 1000 kBTU/hr coil
3 VDC = 300 kBTU/hr
7.5 VDC = 750 kBTU/hr
7.5V
750
Power ControlExample
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Belimo Energy Valve™Energy Metering
• By measuring Flow (Electronic Flow Sensors)and
• Delta Temperature (RTD sensors)
• the Energy Valve can calculate Power/Energy
Power: Q (BTU/hr) = 500 x Flow (GPM) xTemperature Change (°F)
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Belimo Energy Valve™Energy Metering Usage
• Energy Measurement
• Use as System Verification Tool during commissioning.
• Establishes a baseline performance for operation over time.
• Contributes to LEED.
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Belimo Energy Valve™Communication
VOLT CURRENT
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Belimo Energy Valve™Communication: Web Server
• Energy Analysis• Flow and Temperature Analysis• Comparative Analysis
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Low Risk Investment
20Belimo Americas Danbury, Connecticut
Energy Efficiency Investing?
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Energy Efficiency is a Low Risk Investment
Source: Laitner, J., Ehrhardt-Martinez, K. and Prindle, W., 2007, “American Energy Efficiency Investment Market”, Energy Efficiency Finance Forum, American Council or and Energy Efficient Economy .
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Belimo Energy Valve™Savings Estimator
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Belimo Energy Valve
Does it really work?
23Belimo Americas Danbury, Connecticut
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Case StudyMIT University Hayden Library - Boston, MA
Building and Project Details• 150,000 sq. ft. on 3 floors• 6 AHU provide majority of the cooling
Results• Aug 9 - Oct 9, 2010
DT = 6.15°F
• Aug 9 - Oct 9, 2011DT = 12.14°F
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Case StudyUniversity of Miami Hospital
Building and Project Details• Rosenstiel Building• 11 AHUs• 2600 Tons of Cooling• Over 10,000 GPM
Results• Delta T raised from
5.5°F to 10.5°F• Flow ~ 5600 GPM• Estimated $66,000/yr savings• Estimated 2.9 year payback
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Conclusion
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www.energyvalve.comInformation and resources
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Belimo Energy Valve™
Thank You
28Belimo Americas Danbury, Connecticut