Belimo Energy Valve™Power Control

1Energy Valve Power Control

2

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

Energy Valve Power Control3

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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

Co

il P

ow

er (

kBT

U/h

r)

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

Co

il P

ow

er (

kBT

U/h

r)

0V 10V

Control Signal

0 10

00

3V

300

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 16

SWT ˚F 45 46 47 47 48 48 47 46 45

RWT ˚F 55 55 55 55 55 55 55 55 55

DAT ˚F 55 55 55 56 57 57 56 55 55

Flow gpm 100 100 100 120 140 160 140 120 100

Power 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

Po

wer

kB

TU

/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

7Energy Valve Power Control

With Power Control – Energy Valve

Minutes 0 2 4 6 8 10 12 14 16

SWT ˚F 45 46 47 48 48 48 47 46 45

RWT ˚F 55 55 55 55 55 55 55 55 55

DAT ˚F 55 55 55 55 55 55 55 55 55

Flow gpm 100 111 125 143 143 143 125 111 100

Power 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

Po

wer

kB

TU

/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

8Energy Valve Power Control

Bush Garden Test – Without Power ControlTe

mp

[°F

], P

ositi

on [%

], Fl

ow [G

PM]

12

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

10

Tem

p [

°F],

Pos

ition

[%],

Flow

[GPM

]

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

Energy Valve Power Control11

Maximum Power (P’max)

• Energy Valve can be reprogrammed to a specific load.

Simple, Programmable Maximum Power

Energy Valve Power Control12

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).

Energy Valve Power Control14

Power Control

Agenda• Power Control• Maximum Power (P’max)• Applications

Energy Valve Power Control15

• Temperature Sensitive Applications

• Simple Load Application

• Load Shedding

• 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

Energy Valve Power Control16

Thank You !

Visit (www.EnergyValve.com)

or Contact Belimo(800) 543-9038

17

Thank You

Energy Valve Power Control