ashrae technical seminar · 2016-02-03 · overview • belimo develops, manufactures and...
TRANSCRIPT
ASHRAE Technical Seminar
Belimo Introduction
by
David Stevenson
Managing Director
Company Presentation Europe
About us
Information about our products
Information about the market
The Belimo Group in figures
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
Subsidiaries of BELIMO Holding AG
Asia / Pacific
BELIMO Actuators Ltd.
Hongkong
BELIMO Actuators Pty. Ltd.
Australia
BELIMO
Actuators (India) Pvt. Ltd.
India
BELIMO Actuators
(Shanghai) Trading Ltd.
China
Subsidiaries of BELIMO Holding AG
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
Information about our products
Information about the market
The Belimo Group in figures
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.
General Air Solutions
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.
General Air Solutions
Special application areas
• Rail vehicles
• Cruise ships
• Wood-burning heating systems
• Wood drying plants
• Chemical and pharmaceutical
industry
• Animal breeding
• Cheese dairies
• Greenhouses
General Air Solutions
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..
General Air Solutions
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
Room & System Solutions
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
Room & System Solutions
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.
Room & System Solutions
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.
Room & System Solutions
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.
Room & System Solutions
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
Information about our products
Information about the market
The Belimo Group in figures
Our Customers
About us
Information about our products
Information about the market
The Belimo Group in figures
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.
Evolution of PICCV & EPIV Valves 50 16 April 2015
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)
16 April 2015 Evolution of PICCV & EPIV Valves 51
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)
16 April 2015 Evolution of PICCV & EPIV Valves 52
• 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
16 April 2015 Evolution of PICCV & EPIV Valves 57
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
Evolution of PICCV & EPIV Valves 68 16 April 2015
There are many PICV’s……
…So how do you choose ?
Evolution of PICCV & EPIV Valves 69 16 April 2015
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 (?)
Evolution of PICCV & EPIV Valves 70 16 April 2015
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 (?)
Evolution of PICCV & EPIV Valves 71 16 April 2015
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
Evolution of PICCV & EPIV Valves 72 16 April 2015
So…..Are all Pressure Independent
Control valves the same ?
Evolution of PICCV & EPIV Valves 73 16 April 2015
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)
Evolution of PICCV & EPIV Valves 74 16 April 2015
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
Evolution of PICCV & EPIV Valves 75 16 April 2015
Cartridge Type (Adjustable)
Pros
o Simple, selection of nearest cartridge to
design flow, adjustable flow within a
range
o Eliminate manual balancing
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
Evolution of PICCV & EPIV Valves 76 16 April 2015
Separate Differential Pressure Control Valve
And Control Valve (mechanical)
Pros
o Differential Pressure stabilized
outside the control valve
o Eliminate manual balancing
o Now supplied with Actuator
o Enhanced Authority
Cons
• Cannot usually flush.
• Bulky & usually Expensive
• Complicated capillary connections
• Accuracy subject to spring P band
Evolution of PICCV & EPIV Valves 77 16 April 2015
Integrated Spring & Diaphragm (mechanical)
Pros
o Simple, selection of flow rate and DP
range
o Eliminate manual balancing
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
Pressure independent valves Thomas Leser, BELIMO FZE April 16, 2013
Evolution of PICCV & EPIV Valves 79 16 April 2015
Evolution of PICCV & EPIV Valves 80 16 April 2015
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
Evolution of PICCV & EPIV Valves 81 16 April 2015
Evolution of PICCV & EPIV Valves 82 16 April 2015
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
Evolution of PICCV & EPIV Valves 85 16 April 2015
• 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.
Pressure independent valves Thomas Leser, BELIMO FZE April 16, 2013
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)
16 April 2015 Evolution of PICCV & EPIV Valves 88
Accuracy of the EPIV EPIV vs. calibrated Measuring Rig
2-3% 2-3%
2-3%
Pressure independent valves Thomas Leser, BELIMO FZE April 16, 2013
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
Pressure independent valves Thomas Leser, BELIMO FZE April 16, 2013
Evolution of PICCV & EPIV Valves 91 16 April 2015
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
Evolution of PICCV & EPIV Valves 94 16 April 2015
Part 2
Evolution of PICCV & EPIV Valves 95 16 April 2015
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
Evolution of PICCV & EPIV Valves 96 16 April 2015
The Building Sector Must Lead
20 April 2013 Belimo Safety Solutions Europe 97
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 ?
20 April 2013 Belimo Safety Solutions Europe 98
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
4th February 2014 (V2.0) Belimo Energy Valve(TM)
• 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%
Pressure independent valves Thomas Leser, BELIMO FZE April 16, 2013
An increase of flow to 200%
increases power by only 6%
20 April 2013 Belimo Safety Solutions Europe 102
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)
Evolution of PICCV & EPIV Valves 108 16 April 2015
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
Belimo Energy Valve™
Modulating
Actuator
EQM Control
Valve
Internet
BACnet
Temperature Sensors (for
supply & return water)
Accurate Flow
Sensor
110
Belimo Energy Valve™
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
Belimo Energy Valve™
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
4th February 2014 (V2.0) Belimo Energy Valve(TM)
Energy Valve – Combines 5 Function
With the Belimo Energy ValveTM,
all 5 functions are combined in
one unit.
Belimo Energy Valve(TM)
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
Belimo Energy Valve™
Measuring Flow and T allows us to…
Directly Control Flow or Control Energy, BTU Meter
116
20 April 2013 Belimo Safety Solutions Europe 117
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
Evolution of PICCV & EPIV Valves 118 16 April 2015
Belimo Energy Valve™
Measuring Flow and T allows us to…
Visualise, Observe, Record and Trend Performance Data
119
Belimo Energy Valve™
Measuring Flow and T allows us to…
Measure, Observe, Record and Trend Performance Data
120 Belimo Americas
Danbury, Connecticut
Belimo Energy Valve™
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
4th February 2014 (V2.0) Belimo Energy Valve(TM)
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
Belimo Energy Valve(TM)
Integrated Web server
• Display of setpoints
• Real-time information actual values
Belimo Energy Valve(TM)
• Positioning signal
• Flow rate
• Temperatures T1 / T2 / T
• Consumer power output
• Accumulated energy
consumption heating/cooling
• Settings
• Status information
Evolution of PICCV & EPIV Valves 127 16 April 2015
Advanced Functions
• Power Control
• DT Manager
August 2014 Belimo Energy Valve(TM)
Control signal Flow rate
Control signal
Power output
Belimo Energy ValveTM
with power control
• NOTHING
Belimo Energy ValveTM
- with Power Control
Belimo Energy Valve(TM)
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
Belimo Energy Valve(TM)
• 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.
4th February 2014 (V2.0) Belimo Energy Valve(TM)
• → Additional energy which does
no result in increased power
output is spent.
Saturation
AHU-6 Power Curve
Pressure independent valves Thomas Leser, BELIMO FZE November 28, 2013
A
AHU-6 DT Curve
Pressure independent valves Thomas Leser, BELIMO FZE November 28, 2013
T
LOW
T OK
A
Application of the recorded Data AHU-6 Power & DT Curve
Pressure independent valves Thomas Leser, BELIMO FZE November 28, 2013
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%
Pressure independent valves Thomas Leser, BELIMO FZE November 28, 2013
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?"
4th February 2014 (V2.0) Belimo Energy Valve(TM)
Worsening of heat exchanger performance...
…through damage
…through contamination
4th February 2014 (V2.0) Belimo Energy Valve(TM)
Heat exchanger performance
4th February 2014 (V2.0) Belimo Energy Valve(TM)
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
4th February 2014 (V2.0) Belimo Energy Valve(TM)
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
Application of the recorded data
(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.
4th February 2014 (V2.0) Belimo Energy Valve(TM)
Application of the recorded data
(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 .
4th February 2014 (V2.0) Belimo Energy Valve(TM)
Application of the recorded data
(example retrofit)
4th February 2014 (V2.0) Belimo Energy Valve(TM)
Application of the recorded data
(example retrofit)
• Conclusion:
• The Energy Valve is the ideal solution for retrofits!
4th February 2014 (V2.0) Belimo Energy Valve(TM)
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
4th February 2014 (V2.0) Belimo Energy Valve(TM)
Comparison EPIV vs. Belimo Energy ValveTM
4th February 2014 (V2.0) Belimo Energy Valve(TM)
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
Danbury, Connecticut
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%
4th February 2014 (V2.0) Belimo Energy Valve(TM)
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
Danbury, Connecticut
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
Danbury, Connecticut
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
Pressure independent valves Thomas Leser, BELIMO FZE November 28, 2013
• 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
Pressure independent valves Thomas Leser, BELIMO FZE April 16, 2013
Evolution of PICCV & EPIV Valves 158 16 April 2015
Belimo Energy Valve™
Thank You
159
Thank You for Your Attention !
Any Questions?
Evolution of PICCV & EPIV Valves 160 16 April 2015