ashrae technical seminarashraeqatar.org/uploads/3/2/4/9/3249974/ashrae_piccv...room & system...

ASHRAE Technical Seminar

Belimo Introduction

by

David Stevenson

Managing Director

http://www.ashraeqatar.org/

Company Presentation Europe

About us

Information about our products

Information about the market

The Belimo Group in figures

Overview

• Belimo develops, manufactures and distributes electric actuators for air dampers and valve technology for heating, ventilation and air conditioning systems (HVAC)

• Founded: 1975

• Headquarters: Hinwil, Switzerland

• Close to 1,400 employees worldwide – on all continents in over 70 countries

• Listed with the Swiss Stock Exchange since 1995

• Worlds first Direct Coupled Damper Actuator

Sales responsibility

Europe

Americas

Asia / Pacific

Sales

in % of total

Regional HQ

Assembly plant

R & D

Employees

Europe

CHF 270 m

55 %

Hinwil

Switzerland

728 (57%)

Americas

CHF 171 m

35 %

Danbury

CT, USA

371 (29%)

Asia / Pacific

CHF 53 m

10 %

Shanghai

China

-

-

179 (14%)

Sales responsibility

Subsidiaries of BELIMO Holding AG

Americas

BELIMO

Aircontrols (CAN) Inc.

Canada

BELIMO

Aircontrols (USA) Inc.

USA

BELIMO

Technology (USA) Inc.

USA

BELIMO

Customization (USA) Inc.

USA

BELIMO Brasil

Comércio de Automação Ltda.

Brazil


Asia / Pacific

BELIMO Actuators Ltd.

Hongkong

BELIMO Actuators Pty. Ltd.

Australia

BELIMO

Actuators (India) Pvt. Ltd.

India

BELIMO Actuators

(Shanghai) Trading Ltd.

China


Europe

BELIMO Automation AG

Switzerland

BELIMO Automation

Handelsgesellschaft m.b.H.

Austria

BELIMO Stellenantriebe

Vertriebs GmbH

Germany

BELIMO

France

BELIMO Ibérica de

Servomotores S.A.

Spain

BELIMO

Automation UK Ltd.

UK

BELIMO Silowniki S.A.

Poland

BELIMO Automation

Norge AS

Norway

BELIMO Servomotori S.r.l.

Italy

BELIMO Automation FZE

UAE

BELIMO Finland Oy

Finland

BELIMO Servomotoren B.V.

Netherlands

Belimo Automation FZE

• UAE Office established: September 2006 as BELIMO Subsidiary

• Located in the Dubai Airport Freezone

• Unit K17 LIU

• $1,000,000 USD Stock

• 4 to 6 Weeks Delivery

• Technical Training Centre – 2009

• Branch Office in Jeddah, KSA – July 2011

• Branch Office in Doha, Qatar – January 2014

• Branch Office in Riyadh, KSA – August 2014

Sales Responsibility in Middle East

Lebanon

Oman

Qatar

Saudi Arabia

Syria

UAE

Bahrain

Egypt

Iran

Iraq

Jordan

Kuwait

Qatar Branch Office

• Trade Representative Office

as of 1st January 2014.

• All logistics, order processing and accounting from Dubai.

• One resident General Manager started 1st October 2013.

BELIMO FZE Sales

• Colin Bridges

• General Manager, Qatar

• Major Projects UAE & KSA

• Joined October 2013

• Previously TA Hydronics for 18yrs

• Please call him!

Local Reference Projects

• Burj Khalifa – Dubai

• Dubai Metro Stations

• Dubai Sport City

• Oasis Shopping Center - Dubai

• Park Rotana Hotel – Abu Dhabi

• Mekkah Expansion - KSA

• Al Barari Villas – Dubai

• Dubawi Super Yacht

• Marriott Hotel – Dubai

• National Museum - Qatar

About us




Where to find Belimo products?

Total solutions from a single source

Pressure-independent characterised control valve

6-way chatcterised control valve

Characterised control valve

Globe valve modulating

Butterfly valves ON/OFF

Zone valve

a.

b.

c.

d.

e.

g.

h.

i.

j.

k.

l.

Air damper with actuator

Dampers with spring-return

Fire protection damper with actuator

VAV-Box Compact

VAV-Box Universal Dynamic

Air applications

Water applications

General Air Solutions

Rotary, linear and full rotation actuators for motorising air control dampers and

slide valves in heating, ventilation and air-conditioning systems.


Standard applications in

heating, ventilation and

air-conditioning systems

• Air conditioning plants

• Ceiling-mounted air outlets

• Supply / exhaust air grilles

• Slotted outlets

• Fan coils

• Underground units

• Façade devices

• etc.


Special application areas

• Rail vehicles

• Cruise ships

• Wood-burning heating systems

• Wood drying plants

• Chemical and pharmaceutical

industry

• Animal breeding

• Cheese dairies

• Greenhouses


CM damper actuator:

Perfection for limited space.

The revolutionary, multi-patented CM rotary actuators prove Belimo’s innovative strengths once again. As thin as

16 mm (without the optional positionindicator), they are flatter than some cell phones and as reliable as all Belimo

actuators: The hardest tests in the industry testify to that with over 100,000 complete cycles and more than a million

partial cycles..


CM..D actuator with damper blade:

Discrete, quiet, space-saving.

Controlled ventilation is increasingly the standard for both modern industrial construction and high-end residential

property. It is even included on the list of basic furnishings. Air dampers from Belimo represent a perfect combination of

design, quality and convenience: motorised with an internal CM..D compact actuator, they lend them-selves readily to

spacesaving integration in the ventilation network.

Safety Solutions

Motorisation of fire and smoke control dampers

Fire protection Smoke control

Safety Solutions

Motorised fire dampers effectively

prevent the spread of fire and

smoke.

Mechanical smoke control solutions

keep escape and emergency routes

smoke-free and delay flashover.

Application: Fire protection and smoke control

Safety Solutions

Room & System Solutions

Controlled room and zone ventilation

to ensure individual room comfort


VAV-Compact D3:

Efficient room control in one unit.

MP-Types MP-Linear LonWorks-Types Modbus-Types

5 – 20 Nm 150 N 5 – 10 Nm 5 – 10 Nm


Actuator, controller and sensor in one unit – VAV-Compact provides an

economical solution for variable and constant air volume control systems in

office buildings, hotels, hospitals, etc.

The fans can be incorporated in Belimo Fan Optimiser systems to facilitate

cost-optimised control according to demand.

VAV-Compact D3:

Efficient room control in one unit.


Digital, self-adaptive VRP-M controllers interact with fastrunning actuators

in laboratories or production areas with a severely polluted atmosphere to

assure an instant supply of fresh air. Depending on what is chosen, the

control system can be integrated in a higher-level fieldbus system – directly

or over the MP-Bus.

VAV-Universal – VRP-M system solution:

Volume or pressure – both via MP-Bus.


ZTH-GEN service tool:

Parametrize and test on side in plaintext.

The ZTH-GEN service tool considerably simplifies diagnostics, function testing and

setting of all HVAC controlling elements.

By connecting it directly to a parameterisable Belimo actuator, important actual values

can be read off on site and adjusted without delay.


MFT-P PC-Tool:

Adaption, diagnostic and grafics depiction.

With PC-Tool MFT-P HVAC controlling elements can be easy, comfortable an application

specific parameterised.

For manufacturer and installer offers the PC-Tool various advantages like graphics

depiction of actual values. That simplified diagnostics with commissioning and

maintenance.

Water Solutions

Control, shut-off and change-over valves for HVAC water circuits, as well as

actuators for globe and rotary valves from leading manufacturers

Water Solutions

Control valves

Standard

Digital

Flexible

Shut-off and

change-over

valves

Motorising fittings

from other

manufacturers

Bus & System Integration

Intelligent integration of HVAC air/water controlling elements and

sensors in a variety of higher-level systems

Safety

solutions

Room & system

solutions

General air

solutions

Water

solutions

Bus & System Integration All Belimo ranges on the MP-Bus

MP AI AO

DI

DO

Bus & System Integration Reducing inputs and outputs

conventional MP-Bus

Fieldbus

system

(optional)

Bus & System Integration Approaches used for MP applications

DDC

LonWorks

EIB/Konnex

Modbus RTU

MP interface

MP- Bus

t

F p t p

24 V

MP

T ~/+

Bus & System Integration Central ventilation unit at DDC controller with MP interface

DDC

Bus & System Integration

LonWorks®

UK24LON

t

Controller

for LonWorks

«Swissness» – reliable quality is appreciated

About us




Our Customers

About us




Key figures 2014

Net sales

Change of sales in local currencies

Operating income (EBIT)

Net income

Research and development

Cashflow

Employees

Actuators shipped

493.9 m CHF ($520 m)

Europe

Americas

Asia / Pacific

81.3 m CHF

67.2 m CHF

30.6 m CHF

70.6 m CHF

1388

5.6 m

(from operating activities)

(FTE’s, yearly average)

+4.5%

+4.3%

+4.6%

+5.1%

+0.1%

+7.3%

+12.1%

-14.8%

+5.6%

+9.1%

Number of actuators shipped

5‘063

-

1,000

2,000

3,000

4,000

5,000

6,0001

98

6

19

87

19

88

19

89

19

90

19

91

19

92

19

93

19

94

19

95

19

96

19

97

19

98

19

99

20

00

20

01

20

02

20

03

20

04

20

05

20

06

20

07

20

08

20

09

20

10

20

11

20

12

20

13

in 1

'000

BE LI MO beraten liefern montieren (advise) (deliver) (install)

www.belimo.ae

The Evolution of

Pressure Independent Control Valves

Evolution of PICCV & EPIV Valves 48 16 April 2015

Part 1

Energy

16 April 2015 Evolution of PICCV & EPIV Valves 49

40% of the world's energy

consumption is used in buildings*

50% of this is in HVAC systems

alone*

(*) Sources: European Commission EPBD (point 6, pp1) &

US Department of Energy’s “Buildings Energy Data Book”

In 90% of installations, the distribution

flow is more than 150% of the design

flow. Source: Investigation by Costic (French Research and Training

Centre in HVAC), published in CFP Journal April-May 2002.


Quick trip thru history of balancing & control

1960’s Balance on temperature – Control traditional

1970’s Manual orifice valve (flow) DRV (return) – Control traditional

1980’s Variable Orifice DRV and Autoflows/AFL (constant flow)

1990’s Differential Pressure Controllers + Manual Balancing

2000’s Pressure Independent Control Valves (various types)

2010 Electronic Pressure Independent Control Valve (EPIV)

2013 Energy Valve (EPIV ++)

Traditional 3 Port Mixing Valve

Arrangement (Constant Volume)


p1 + p2

p1

• Variable flow through the coils to meet demand

by expensively by-passing unwanted water

• Constant flow through each branch and the

main header

• Valve sizing is straightforward – match coil flow

rate and pressure drop (p2)

• Commissioning and balancing is relatively

straightforward

• The main circulating pump is running at

constant speed throughout the occupancy

period, delivering the total design volume of all

cooling coils whatever their demand

• Chiller and coil efficiencies suffer & no pump

energy saving

BSRIA BG51/2014

p1 = Pressure loss of the control valve only

p1+p2 = Total pressure loss of the controlled circuit

Pressure Dependent 2 Port Valve

Arrangement (Variable Volume)


• Variable flow through the coils to meet

variable demand

• Variable flow in the main header

• Control valve sizing more difficult, in addition

to the coil, the losses through the

commissioning sets and the branch pipework

also need to be taken into account (p2)

• Commissioning and balancing is more

difficult and takes longer than for 3 and 4

port valves

• The main circulating pump speed is varied to

satisfy the total demand of all the coils at the

time. A near impossible task without pressure

control. Where do we control the pump ?

BSRIA BG51/2014

p1 = Pressure loss of the control valve only

p1+p2 = Total pressure loss of the controlled circuit

What must be considered when using

pressure-dependent valves (selection)?

Planning phase

• The kvs-value must be calculated correctly

• Various differential pressure at each valve

• Additional to the control valves balancing valves must

be selected/ordered

• If changes occur other valves are may be necessary

Construction phase

• Balancing valves must be installed

Commissioning

• Hydraulic balancing must be performed carefully to get

the required flows at full load

During operation

• Most of the time operation at partial load

• What is going on in the system is not exactly known

Conversion of the building

• New calculations are necessary

• Maybe other valves are needed

Belimo Energy Valve(TM) August 2014

Conventional ball valves cannot Modulate !

Water Event 2014

Advantages:

• Large Kvs values

• All sizes 15-150mm

• High tightness

• Low flow resistance

• Maintenance Free

• Resist clogging & sticking

Disadvantages:

• Only on/off Applications

The Belimo difference: the characterized disk

Water Event 2014

Disc (EQM) Advantage: Longer service life and higher

control quality

Smaller ball Advantage: Less torque means lower actuator

costs

Form-fit spindle Advantage: Insensitive to inferior water quality

Air bubble-tight Advantage: Saves energy when valve is fully

closed

Characterised Control Valves


Deliver EQM characteristic required to

modulate in a stable and efficient

manner

The Belimo result

Water Event 2014 13 / 08 / 2014

The proven BELIMO disc

Principle

• Characterizing disc

• Gentle rise, no inlet jump

• More system stabilty across the entire control

range

• Maximum quality control in the partial load

range

4th February 2014 (V2.0) Belimo Energy Valve(TM)

Stable Control - total circuit characteristic

60

Dp

variation

effect

(authority)

q

Kv

Valve

characteristic

(inherent)

h

Kv

Terminal

characteristic

P

q

Global circuit

characteristic

P

u

q

P

u

h

Actuator

characteristic

u

Kv

The key point is to provide good authority from the control valve

Pressure independent valves Thomas Leser, BELIMO FZE April 16, 2013

Valve authority is a measure of the change in differential

pressure across a control valve during operation.

A = DPv / (DPv + DPc).

• Pv100 = Pressure drop across a fully open control valve.

• Pc = Pressure drop across the remainder of the circuit.

range between 0.25 – 0.5 as “acceptable”.

Better minValue A = 0.3

Valve Authority

62

2-way control valve authority (variable flow)

Variable, depends on flows in the

piping,and on the opening/closing of all

the other control valves

In a variable flow distribution, the authority of a control valve is

variable.

Constant as soon as the valve

Kvs is chosen (pV).

shutfully valve Control

flow design and openfully valve Control

P

P

20 April 2013 Belimo Safety Solutions Europe 63

100

90

80

70

60

50

40

30

20

10

00 10 20 30 40 50 60 70 90 10080

Flow in %

Lift h in %

100

90

80

70

60

50

40

30

20

10

00 10 20 30 40 50 60 70 90 10080

100

90

80

70

60

50

40

30

20

10

00 10 20 30 40 50 60 70 90 10080

Heat output in %

=+

Heat output in %

Flow in % Lift h in %

Coil characteristic EQM Control valve characteristic

shutfully valve Control

flow design and openfully valve Control

P

P

Power / Position relationship

Stable Control room temperatures by controlling the flow

To obtain a circuit characteristic that is as linear as possible, the

non-linearity of the coil characteristic is matched by an equal

percentage characteristic (EQM) of the control valve.

On-off control – Flow increases at partial load

• Manually balanced variable flow on-off control system

• 100 identical units; Pump head 150 kPa; Terminal unit 20 kPa;

On-off CV 5 kPa

Temperature regime:

Ts/Tr/Ti = 7/12/24°C

0%

10%

20%

30%

40%

50%

60%

70%

80%

90%

100%

0% 20% 40% 60% 80% 100%

To

tal syste

m flo

w

System load

At 50% load, the total flow in system reaches 73% of the total design flow.

This is a 46% increase w.r.t. the required flow (50%) at 50% load.

Seasonal flow increase lead to an estimated increased pumping energy

consumption.

64

6,0

8,0

10,0

12,0

14,0

16,0

18,0

20,0

22,0

24,0

26,0

0% 20% 40% 60% 80% 100%

6,0

8,0

10,0

12,0

14,0

16,0

18,0

20,0

22,0

24,0

26,0

0% 20% 40% 60% 80% 100%

Return water temp. – proportional vs on-off

control

65

Retu

rn t

em

p. T

r

2-way proportional

3-way proportional

Temperature regime:

Ts/Tr/Ti = 7/12/24°C

Flow through terminal unit R

etu

rn t

em

p. T

r

System load

2-way on-off, MBV

3-way on-off, MBV

Proportional control On-off control

A 2° C reduction of return temperature of chilled water can lead to

a 15% drop of the COP of the Chiller

1. To Balance the System, from This ……

April 16, 2015 66

To this ………..PICCV’s

April 16, 2015 67

with an EQM (MODULATING)

characteristic

Fewer valves and much

simpler installation


There are many PICV’s……

…So how do you choose ?

http://www.google.ch/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&docid=YiUMTiIf_ziyTM&tbnid=yd3WjrRZHNS23M:&ved=0CAUQjRw&url=http://www.johnsoncontrols.co.za/content/za/en/products/building_efficiency/product_information/hvac-control-products/valves/vp1000.html&ei=9SbaU4GaJYje7Aay1IHoCg&bvm=bv.72185853,d.ZGU&psig=AFQjCNGYSuHxNpimmengJWHcAsYIh6k9fQ&ust=1406892072934578

http://www.google.ch/url?sa=i&rct=j&q=&esrc=s&frm=1&source=images&cd=&cad=rja&uact=8&docid=LElXVIQm7kIQeM&tbnid=aEs8wKBUalWfiM:&ved=&url=http://www.supplyht.com/keywords/4555-piccv&ei=JCjaU-3XGMuS7AaH54Eg&bvm=bv.72185853,d.ZGU&psig=AFQjCNHmiCwsJIbuMt7OtMUaeQZk4CL5CQ&ust=1406892452561385


Some of the Different Types of PICV on the Market

Flow Cartridge (fixed)

Flow Cartridge (adjustable)

Integrated Spring & diaphragm (differential pressure control)

Separate differential pressure control + control valve

Magnetic Flow meter & control valve

Ultrasonic Flow meter & control valve

With test points (optional)

Without test points

Linear characteristic

EQM characteristic

Control Valve Authority 1 (?)


What is it that Pressure Independent Control Valves do ?

This is what some manufacturers say........

1. Pressure Independent Balancing & Control Valves provide perfect

control and automatic hydronic balance.

2. Pressure Independent Control Valves (PICV) make a significant

contribution to efficient energy usage and offer cost savings by preventing

over- or under-supply of heating or cooling energy. They also improve the

control accuracy and, therefore, enhance room comfort.

3. Sizing and selection are also much more simplified thanks to the

xxxxxxx maintaining 100% authority at all times

No ! ..... There are some important differences

Lets take a closer look


So…..Are all Pressure Independent

Control valves the same ?


Cartridge Type (Fixed)

Fixed Cartridge type

Fixed Delta P

Fixed Flow

Ideal for clean Constant Flow Systems

Work well at 100% design flow only.

Suited to 3 port control of circuits where

excess flow is (expensively) by-passed.

Test Points verify valve is operating within

it’s control band (not measuring flow)


Cartridge Type (Fixed)

Pros

o Simple, selection of nearest cartridge to

design flow

o Eliminate manual balancing

o Low Cost

Cons

• Cannot flush with cartridge installed

• Not adjustable

• Water should be clean to prevent

cartridge ‘sticking’

• Still require a control valve

• Suited to on/off or Constant flow

systems


Cartridge Type (Adjustable)

Pros

o Simple, selection of nearest cartridge to

design flow, adjustable flow within a

range


Cons

• Cannot flush with cartridge installed

• Water should be clean to prevent

cartridge ‘sticking’

• Still require a control valve

• Suited to on/off or Constant flow

systems


Separate Differential Pressure Control Valve

And Control Valve (mechanical)

Pros

o Differential Pressure stabilized

outside the control valve


o Now supplied with Actuator

o Enhanced Authority

Cons

• Cannot usually flush.

• Bulky & usually Expensive

• Complicated capillary connections

• Accuracy subject to spring P band


Integrated Spring & Diaphragm (mechanical)

Pros

o Simple, selection of flow rate and DP

range


o Supplied with Modulating Actuator

o Enhanced Authority (Close to 1)

Cons

• Cannot usually flush.

• Internally complicated

• Stabilize Delta P in order to improve flow

control in variable flow systems.

• Flow measurement not so accurate.

• Control accuracy subject to spring’s P

Band

Short animation on

how Belimo PICCV

works…………

PICCV – principal

Diaphragm

Constant

Pressure

Constant

Flow

Pressure

Variations

Unsteady

Flow

Pressure sensing port:

“signal” to pressure

regulator

FLOW DIRECTION

Increase of p:

cone closes to reduce

excessive pressure



Electronic Pressure Independent Control

(EPIV)

Pros

o Accurate Electro-magnetic or Ultra-

sonic Flow Meter

o Measures real-time flow rate

o Communicates with Actuator to

constantly correct to required flow

o Straight thru – no complex internals

o Simple to flush

Cons

• It’s a new concept

• Doesn’t control DP to give Authority

• Non Traditional

Electronic Pressure Independent Valve

• Controls automatically and supplies the desired set-flow, regardless of

pressure variations in the system


Old type of hydraulic balancing versus

the new one with EPIV

16 April 2015

Evolution of PICCV & EPIV Valves

The old type of balancing

At least 2 people

Equipment: ● Laptop

● Mobile phones

● Measuring kit

● Instructions

10 kg

The new balancing

1 person

Equipment: ● Setting device

100 grams

84

Setting and Commissioning (EPIV) - Local


• Setting & Diagnostic

device

EPIV – 4 Functions – One Unit

1. Hydraulic balancing

2. Air bubble-tight-shut-off

3. Pressure-independent flow

control

4. Continual ‘Real Time’ flow

measurement reporting to the

actuator to maintain required

flow regardless of pressure

With the EPIV,

4 functions are

combined in one unit.


Setting & Commissioning -

Local & Remote (PC-Tool software)

16 April 2015 Evolution of PICCV & EPIV Valves

• Setting of various

parameters

• Recording of flow

• Dispay of set and actual

values for flow, valve

angle, control signal

87

Electronic Pressure Independent Valve

On-Site Benefits

• A smaller pump is required compared to PICV resulting in reduced costs.

• Reduced energy consumption.

• Pump Optimisation.

• Commissioning time is dramatically reduced.

• More information is being provided to the BEMS.

• System performance can be monitored due to integral flow measurement.

• Continual increases in pump speed to maintain flow results in required

maintenance to check strainers.

” The EPIV offers the reality that is pre-set offsite valves. Until now everyone was

second guessing the accuracy of either the measuring station or the PICCV. Is there

enough pressure? This one, simple device cuts through all that and can genuinely be

preconfigured off site. It’s one of the few devices that benefits everyone, consultants,

installers, vendors and end users”

Andy Brooks (Ability Projects)


Accuracy of the EPIV EPIV vs. calibrated Measuring Rig

2-3% 2-3%

2-3%


EPIV – Benefits

• Use as ordinary modulating control valve (0-10 V or 2-10V)

• Pressure independent, no balancing – and no balancing valves – required

• Current Flow Feedback "in real-time" (0.5-10 V signal)

• No oscillations (hunting), long system service life

• Simple selection and valve design

• Non-sensitive to dirt Maintenance-free

• Few moving parts (only valve) Long service life

• Air bubble-tight No waste of energy

• Non-sensitive to glycol portion

• High flow precision



We can see the progression........

• Mechanical Automatic Flow Limiters (fixed cartridge)

• Mechanical Automatic Flow Limiters (adjustable)

• Mechanical Integrated DP controller Control Valves

(PICV)

• * Electronic Pressure Independent Control Valves (EPIV)

*Although not controlling DP to enhance Authority –

Reading Real Time flow rate and communicating with the

Actuator to adjust to required flow rate.

Enhanced communication.........................and it gets better !

?????

Water Event 2014

Coffee Break

Water Event 2014

Part 2 follows after a………..

The Evolution of

Pressure Independent Control Valves


Part 2


¹ Urban areas are responsible for over 70% of global energy consumption and CO2 emissions, mostly from buildings. By 2030, a staggering 82 billion square meters (900 billion square feet), an area roughly equal to 60% of the total building stock of the world, will be built and rebuilt in urban areas worldwide. This projection provides an unprecedented opportunity to reduce fossil fuel CO2 emissions by setting the entire global Building Sector on a path to peak emissions quickly, and completely phase out CO2 emissions by about 2050.

¹ ROADMAP TO ZERO EMISSIONS

June 4, 2014 (originally submitted March 30, 2014)

The Built Environment in a Global Transformation to Zero Emissions


The Building Sector Must Lead


The introduction of Variable Speed Drives in Pumps changed things

Flows and Pressures became Variable to save Energy

Manual Balancing fine for Constant flow systems but Not for Variable

Dynamic flow requires Dynamic control

Why use them ?


Why use them ?

1. To automatically Balance the System (replace all Balancing Valves)

2. To Control room temperatures by controlling the coil flow

3. To allow the Pump to vary (reduce) speed and save Energy (cost)

4. To help the Chiller and Coils to maintain Efficiency

How can pressure - independent valves make

your life easier?

Planning phase

• The kvs-value must be calculated correctly

• Various differential pressure at each valve

• Additional to the control valves balancing valves must

be selected/ordered

• If changes occur other valves are may be necessary

Construction phase

• Balancing valves must be installed

Commissioning

• Hydraulic balancing must be performed carefully to get

the required flows at full load

During operation

• Most of the time operation at partial load

• What is going on in the system is not exactly known

Conversion of the building

• New calculations kvs-value are necessary

• Maybe other valves are needed


• Not necessary. Selection according required

volume of water

• No balancing valves needed

• Easy setting of Vmax

• No balancing valves needed

• The only thing you have to do is setting Vmax. The

PI-valve undertakes the balancing.

• The flow rate is also at partial load operation

defined. Energy valve with monitoring function.

• Not necessary

• Easy setting of Vmax within a wide range

Waste Zone

100

Cooling Output

[kW]

Signal

Flow through Coil 75% 100%

Power Saturation Point / Waste Zone

PkvV *

Flow 100%

Amount of Valve opening

Typical cooling

coil characteristic

Equal-percentage flow characteristic

Typical HVAC Coil Curve

+

Equal Percentage Valve Charactreristic

100%

Coil Performance

Control Signal from BMS 50%

50%

100%

0%


An increase of flow to 200%

increases power by only 6%


When using PICV’s - What should we consider?

1. Flow Rate – can the control valve handle the flow ?

2. Maximum pump head – the valve should control the flow ?

3. Can the actuator close-off against the pump head ?

4. Does the control valve have an EQM characteristic ?

5. Can we flush thru the control valve ?

6. Will the control valve isolate fully ?

7. Is the flow rate adjustable ?

8. Can the flow rate be verified/measured ?

The evolution of the characterised Control Valve

Belimo Energy Valve(TM)

Fu

nctio

na

lity / c

usto

me

r b

en

efit

CCV

PICCV

EPIV

Belimo

Energy Valve TM

Position

Pressure-independent

volumetric flow

Flow measurement

• Pressure-independent

• Real-time information

flow rate

Flow measurement +

Energy monitoring

• Pressure-independent

• Real-time information

and recording system

parameters

→ Provides energy transparency

→ Helps ensure an energy-

optimised operation

August 2014 Belimo Energy Valve(TM)

Belimo Energy ValveTM

DN15 to DN150

What is The Energy Valve ?

•

107

The Energy Valve is a PICCV ++++++

+ Power Management (real time)

+Delta T Management (real time)

+ Data Recording

+ Data Storage (13 months) & retrieval

+ Communication (remote & local)


The Energy Valve

• Gives real visibility into how the system is operating

• Provides the means to record data for analysis

• Allows remote and local intervention

• Allows circuit optimization

• Dynamically intervenes if things go wrong (Delta T

Manager)

• Allows the energy to be managed precisely (Power

Manager)

• Provides for ongoing preventative maintenance

Belimo Energy Valve™

The Energy Valve is an intelligent, communicative pressure

independent control valve with an integrated BTU meter

109 August 2014


Modulating

Actuator

EQM Control

Valve

Internet

BACnet

Temperature Sensors (for

supply & return water)

Accurate Flow

Sensor

110


111 Belimo Americas

Danbury, Connecticut

15mm-50mm 65mm-150mm

4.03.2015 Belimo Energy Valve(TM)

The Belimo Energy ValveTM

DN15 … DN50 DN65 … DN150

1

1

2

2

3

3

5

5

4

4

6 6

1 Characterized control valve

2 Volumetric flow sensor

3 Flow meter carrier

4 Temperature sensor T1 (DN15…50: wired; length 3 m / DN65…150: wired; length 10 m)

5 Temperature sensor T2 (DN15…50: wired; length 0.8 m / DN65…150: integral)

6 Actuator with

- Integrated logic

- Integrated web server

- Data Recording function

- Delta-T manager

- Power control

ALL-IN-ONE

Rapid installation, simple integration

Conventional ALL-IN-ONE

R

egula

tion

Pressure-

independent

regulation +

measurement

Balancing valve

Actuator

Valve

Energy counter

Energy ValveTM

Pressure independent valves Thomas Leser, BELIMO FZE November 28, 2013


EV..R+BAC / P6..W..EV-BAC

The pressure-independent characterized control valve (CCV)

with electronic flow control and monitoring function

• Revolutionizing the flow rate regulation and hydraulic balancing

• Enables monitoring and energy balance optimization


Energy Valve – Combines 5 Function

With the Belimo Energy ValveTM,

all 5 functions are combined in

one unit.


1. Hydraulic balancing (no balancing

valves)

2. Air bubble-tight shut off

3. Pressure-independent flow control

4. Measurements Flow rate, Delta T, Energy consumption

Water temperatures supply/return

5. Monitoring function - Power output heating/cooling coil -

Expenditure of energy for heating/cooling

- Creates plant transparency


Measuring Flow and T allows us to…

Directly Control Flow or Control Energy, BTU Meter

116


Low Delta T Syndrome………

1. 3-Way Control valves (short circuiting)

2. Blocked strainers/coils

3. Poor pump control (mis-matching supply and demand)

4. Poor coil control (coil efficiency not maintained).

5. Poorly sized and selected control valves (modulating

control requires high authority and EQM characteristic)

6. On/off control

7. System aging

Improper Set-point or Controls Calibration

Probably the most common cause of low delta-T is improper set-points on controllers

controlling supply air temperature off of cooling coils such as those in VAV systems and other

central fan systems. When the set-point of a cooling coil is set too low, the controller causes

the chilled water valve to open fully since it is unable to attain the set-point no matter

how much chilled water flows through the coil. Extract from ASHRAE article



Visualise, Observe, Record and Trend Performance Data

119



Measure, Observe, Record and Trend Performance Data

120 Belimo Americas



Measuring Delta T allows us to… Power Saturation Point

Limit Waste with Delta T Management

121

Communication modes

Energy Valve

• Conventional, analogue, 0.5 (or 2) to 10 Volts

• Positioning signal Y as set point for flow rate or valve position

• Feedback U5 as information on flow rate, power, T1, T2, T or opening

angle

• Always an integral part of the Energy Valve are:

• BACnet IP

• BACnet MS/TP

• BELIMO MP-Bus (MP bus slave interface)

The usage of Belimo Gateways is not possible


Integrated Web server… …the unique added value – local access

Ethernet RJ45

http://192.168.0.10:8080 (default)

We

b b

row

se

r

We

b s

erv

er


Integrated Web server

• Display of setpoints

• Real-time information actual values


• Positioning signal

• Flow rate

• Temperatures T1 / T2 / T

• Consumer power output

• Accumulated energy

consumption heating/cooling

• Settings

• Status information

http://ev56.belimo.ch/

Advanced Functions

• Power Control

• DT Manager

August 2014 Belimo Energy Valve(TM)

Control signal Flow rate

Control signal

Power output


with power control

• NOTHING


- with Power Control


Pressure dependent

valve

Control signal

Valve opening

Valve opening

Flow rate

Flow rate

Power output

Flow rate Power output

Pressure independent

valve

Power output at the coil is

influenced by:

• Differential pressure

• Coil characteristic

• Temperatures

• Coil characteristic

• Temperatures

Power Control Function


• The Belimo Energy ValveTM provides the possibility of direct power control

• Power Control allows the controller to call for a specific load to the space

• 0 to 10 VDC = 0 to 100% BTU/h (kW) Capacity

Example: 83 Ton AHU

• 83 Tons ~ 1000 kBTU/h coil

• 3 VDC = 300 kBTU/h

• 7.5 VDC = 750 kBTU/h

Signal / Flow

Valve Flow

The first Temperature- and Pressure-independent Valve !

The challenge:

Too low T supply / return

• In many cases heating or cooling systems are operated with a too high flow rate.

• In the event of a too high water throughput:

• The T between supply and return is lower than designed.

• No increase of output power at heating or cooling coil. Therefore no improvement in interior

comfort.

• Considerably more water is pumped around the circuit. This results in disproportionally more

power consumption by the circulation pump.

• The chiller or boiler is operated above the designed operating point. This results in an

inefficient power supply.


• → Additional energy which does

no result in increased power

output is spent.

Saturation

AHU-6 Power Curve


A

AHU-6 DT Curve


T

LOW

T OK

A

Application of the recorded Data AHU-6 Power & DT Curve


A

Field Test

Massachusetts Institute of Technology (MIT)

• Field test results

• System transparency indicates large

optimisation potential

• Systems are operated with too much

volumetric flow of water

• Optimised water quantities can be defined

• Significant reduction of pump energy

• Typically, flow rate reduction > 25%

• Previously, water quantity was too

high by a factor of 2 on some days

pump energy reduction by 50%


Application of the recorded data

(example new system)

• "For what purpose can the recorded data be used?"

• Monitoring the power performance of the heat exchanger in operation

• "My heat exchanger was optimally designed and energy-efficient

operation was checked and documented at the time of commissioning."

• The circumstances of the entire system change during operation. The

Energy Valve provides all of the data in order to recognise when the

performance worsens.

• "What does change?"


Worsening of heat exchanger performance...

…through damage

…through contamination


Heat exchanger performance


0% Flow rate 100%

Po

we

r o

utp

ut

Diffe

ren

tia

l te

mp

era

ture

• In operation: The performance of the exchanger is reduced by

contamination or damage.

Th

e n

ew

(re

du

ce

d)

ma

xim

um

po

wer

is r

ea

ch

ed

at

Vn

om

< 1

00

%

→ T

he

qu

an

tity

of

wa

ter

thro

ug

h t

his

op

era

tin

g p

oin

t

bri

ng

s n

o g

rea

ter

po

we

r

→ A

pp

lic

ati

on

of

en

erg

y

wit

ho

ut

be

ne

fit!

En

erg

y l

os

s

Heat exchanger performance


0% Flow rate 100%

Po

we

r o

utp

ut

Diffe

ren

tia

l te

mp

era

ture

• During operation: The performance continues to decline!

En

erg

y l

os

s

Th

e n

ew

(re

du

ce

d)

ma

xim

um

po

wer

is r

ea

ch

ed

at

Vn

om

<<

10

0%

→ T

he

qu

an

tity

of

wa

ter

thro

ug

h t

his

op

era

tin

g p

oin

t

bri

ng

s n

o g

rea

ter

po

we

r

→ A

pp

lic

ati

on

of

en

erg

y

wit

ho

ut

be

ne

fit!

Energy

loss

Reduction maximum

possible power output


(example new system)

• Conclusion:

• Every system exhibits changes during operation

• With the aid of the data made available, changes can be readily noted and

suitable measures can be implemented

• Ensuring energy efficiency in operation, not only at the time of

commissioning

• Data make it possible to plan/execute maintenance on the basis of ACTUAL

performance

• In the case of new systems, the Energy Valve helps secure the

preservation of value.



(example retrofit)

• "I would like to replace the valve in my existing system. Unfortunately, the

system data is no longer known due to its age and the various

adjustments that have been made since its commissioning."

• The Energy Valve is the ideal solution in such cases.

• "Why is that? What does the Energy Valve offer that a conventional valve

does not?"

• If no hydraulic data is available, then the same valve DN can be selected as

the heat exchanger connection DN. After the commissioning, a variety of

system data is recorded by the Energy Valve. Such things as the

characteristic curve of the heater can be reconstructed with the help of this

data. A retroactive change in the maximum flow rate can be quickly and

simply implemented .



(example retrofit)



(example retrofit)

• Conclusion:

• The Energy Valve is the ideal solution for retrofits!


Minimum required differential pressure

• Dependent on the needed V’max (Pump optimizer: currently required flow rate)

• Example Energy Valve DN25 - V’nom = 69 l/min = 4.14 m3/h

- Theoretical kvs = 8.6 m3/h

- Operation at 50% V’nom → V’max = 2.07 m3/h

• Minimum required P:

∆𝑝𝑚𝑖𝑛 = 𝑉 𝑚𝑎𝑥

𝑘𝑣𝑠

2

= 2.07 𝑚

3ℎ

8.6 𝑚3ℎ

2

= 6 𝑘𝑃𝑎


Comparison EPIV vs. Belimo Energy ValveTM


Feature Belimo EPIV Belimo Energy ValveTM

4 functions combined in one valve

5 functions combined in one valve

Simplified valve selection (no calculation of kvs required)

Wide adjustment range of the maximum flow

No balancing valve needed

Permanent hydraulic balancing

(manual hydraulic balancing no longer necessary)

Correct flow rate at any time

Real time information of the measured flow rate

Monitoring function

(Displaying and recording of the plant data)

Reconstruction of the coil characteristic possible

Delta-T Manager

Possibility of power control

Conventional control

Belimo MP-Bus®

BACnet MS/TP, BACnet IP

Air bubble-tight (Leakage rate A, EN 12266-1)

Case Study (1) MIT University - Boston, MA

Building and Project Details

• 150,000 sq. ft. on 3 floors

• Built in 1947 (originally had its own

dedicated chiller, later converted to

campus district cooling)

• 6 AHU provide majority of the cooling

• Average T coil = 6.15oF (3.1°C) (2010)

Hayden Library

148 Belimo Americas


Field test Massachusetts Institute of

Technology (MIT)

• Field test results

• System transparency indicates optimisation

potential

• Systems are operated with too much

volumetric flow of water

• Optimised water quantities can be defined

• Significant reduction of pump energy

• Typically, flow rate quantity reduction

> 25%

• Previously, the water quantity was too

high by a factor of 2 on some days

pump energy reduction by 50%


Case Study (1) MIT University - Boston, MA

Results

• System as is:

Aug 9 - Oct 9, 2010

T = 3°C (6.12°F)

• System with Energy Valve

Aug 9 - Oct 9, 2011

T = 6°C (12.14°F)

• Savings: about $1.5M/yr

• MIT You Tube Video

www.energyvalve.com

150 Belimo Americas


Case Study (2) University of Miami Hospital

Results

• 11 AHU

T raised from

5.5°F to 10.5°F

• Flow reduced from

10,000 GPM to 5600 GPM

• Estimated $ 66,000 /year savings

• Estimated 2.9 years payback

151

Case Study Large Tech Company in North Carolina

Position Control 240 GPM

144 GPM

96 GPM

Flow Control

DT Management

152 Belimo Americas


13

ENERGY VALVE

• ... includes all Benefits of a Control Ball Valve and an EPIV

• ... offers Transparency and Availability of

Consumption and Operation Data (up to 13 months)

• ... is a powerful Tool against Low Delta T

• ... will maximise Energy Efficiency of your Systems


• Flow-Control: Deliver exact flow to the coil …

Benefits of using Energy Valve Simplified Control, Flow control

154

Directly Control Flow or Energy

• Deliver exact BTU/hr to the space, regardless of system fluctuations.

Benefits of using Energy Valve Simplified Control, Power Control

Power Control can overcome disruptions in the supply water temperature

DAT SWT

155

Benefits of using Energy Valve Track Equipment Performance

• Your system degrades over time…

know about it before there is a comfort issue!

Access live or long term data,

Ongoing Commissioning, Predictive Maintenance

156

Benefits

• Knowledge of Hydronic Systems

• Flow, Energy, Consumption, Delta T, Performance ...

• Commissioning / Diagnostics

• Continuous Commissioning, Benchmarking

• Coil

• Optimisation in Retrofit Applications

• Information for predictive Maintenance

• DT Managing for coil Efficency

• Pump

• Reduced pump Energy from maximum DT’s achievement

• Chiller Plant

• Improved efficiency from lower flow resulting in higher DT

• Released plant capacity



Thank You

159

Thank You for Your Attention !

Any Questions?


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