Belimo Energy Valve™ Power Control
description
Transcript of Belimo Energy Valve™ Power Control
Belimo Energy Valve™Power Control
1Energy Valve Power Control
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Power Control
• Expanded Size Range• Sizes from ½” through 6”• Flow ranges from 1.65 GPM
to 713 GPM
• Powerful New Features• Linear BTU/hr control• Maximum Power (P’max)
Power Control is a feature that is added to the Energy Valve™ in 2014
Energy Valve Power Control
Power Control
Agenda• Power Control• Maximum Power (P’max)• Applications
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Power Control Definition
What is Power Control ?• A control algorithm that
creates a Linear relationship between control signal and BTU/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)
Energy Valve Power Control
Power Control
• Power Control allows the controller to deliver exact energy to the space• 0 to 10 VDC = 0 to 100% BTU/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/h
7.5 VDC = 750 kBTU/h
7.5V
750
Energy Valve Power Control5
6Energy Valve Power Control
Without Power Control - Standard Control
Minutes 0 2 4 6 8 10 12 14 16SWT ˚F 45 46 47 47 48 48 47 46 45RWT ˚F 55 55 55 55 55 55 55 55 55DAT ˚F 55 55 55 56 57 57 56 55 55Flow gpm 100 100 100 120 140 160 140 120 100Power kBTU/hr 500 450 400 480 490 560 560 540 500
0 2 4 6 8 10 12 14 16350
450
550
650Without Power Control
Minutes
Pow
er k
BTU/
hr
Increase in supply water temperature takes time to recover.
Increase in Supply Water Temperature (SWT)The Discharge Air Temperature (DAT) will change shortly afterThe DDC controller increases flow to compensatePower output fluctuates due to DAT delayed response
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With Power Control – Energy Valve
Minutes 0 2 4 6 8 10 12 14 16SWT ˚F 45 46 47 48 48 48 47 46 45RWT ˚F 55 55 55 55 55 55 55 55 55DAT ˚F 55 55 55 55 55 55 55 55 55Flow gpm 100 111 125 143 143 143 125 111 100Power kBTU/hr 500 500 500 500 500 500 500 500 500
0 2 4 6 8 10 12 14 16350
450
550
650With Power Control
Minutes
Pow
er k
BTU/
hr
Increase in supply water temperature has no effect on powerPower Control is Pressure and Temperature Independent.Precise temperature control for temperature critical applications.
Power remains stable regardless of SWT changes
Field Test - Busch Gardens, Florida
Application• Timbuktu 4D Cinema• Energy Valve in Pressure Independent Mode• Energy Valve using Power Control
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Bush Garden Test – Without Power ControlTe
mp
[°F],
Pos
ition
[%],
Flow
[GPM
]
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Valve Position %
Flow GPM
Flow set point
Discharge Air temperature [°F]
Supply water temperature [°F]
ΔT [°F]
Power kBTU/hr
Pow
er k
BTU
/hr
0 3 6 9 12 15 18 21Minutes
3
1. Supply Water Temperature (SWT) increases by 1.4°F2. Discharge Air Temperature (DAT) increases by 2°F3. Power output fluctuates
Energy Valve Power Control
Bush Garden Test– with Power Control
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Tem
p [°F
], P
ositi
on [%
], Fl
ow [G
PM]
Power SP kBTU/hr Power kBTU/hr
1
2
3
Pow
er k
BTU
/hr
Valve Position %
Flow GPM
Supply Air temperature [°F]
ΔT [°F]
Supply water temperature [°F]
0 3 6 9 12 15 18 21minutes
1. Supply Water Temperature (SWT) increases2. Discharge Air Temperature (DAT) remains constant3. Power output remains constant
Faster Response - No Loss of Occupant ComfortEnergy Valve Power Control
Power Control
Agenda• Power Control• Maximum Power (P’max)• Applications
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Maximum Power (P’max)
• Energy Valve can be reprogrammed to a specific load.
Simple, Programmable Maximum PowerEnergy Valve Power Control
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Simple Load Application
Load?
Load?1. Select the Valve
Flow
2. Set Maximum Power to Coil BTU/hr capacity
Simplify Valve Selection - Simplify ImplementationEnergy Valve Power Control
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Maximum Power Control
• During high demand days, the utility companies may call for a reduction in energy consumption (Load Shedding).
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Power Control
Agenda• Power Control• Maximum Power (P’max)• Applications
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• Temperature Sensitive Applications
• Simple Load Application
• Load Shedding
Power Control Applications
Simple, Programmable & Repeatable Load Reduction
Simplify Valve SelectionSimplify Design Implementation
Provide Precise control in Temperature and Pressure
independent operation
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Thank You !
Visit (www.EnergyValve.com)
or Contact Belimo(800) 543-9038
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Thank You
Energy Valve Power Control