DCV-overview
Overview
Demand-controlled
Ventilation
Leading edge products for ​demand-controlled ventilation
Demand-controlled ventilation offers
great comfort and low operating costs
When the room is in use, ventilation and air conditioning is controlled to meet the needs of the occupants.
An empty room requires minimum ventilation and air-conditioning.
Demand-controlled ventilation involves ventilating and conditioning the air in a room or premises precisely to meet our needs
– no more and no less. The potential for savings is substantial, especially in premises such as offices, classrooms and hotel rooms
where there is considerable variation between high and low load
conditions in rooms and during times when there are few or no
occupants.
At the same time, it gives the opportunity for maximum comfort
for the people occupying the premises through demand-controlled heating and cooling regulation.
Using demand-controlled ventilation, it is possible to meet the
ever-increasing requirements on energy efficiency. As much as
80% fan electricity and 40% of heating and cooling energy can
be saved with demand-controlled ventilation compared with
constant airflow and temperature.
CAV
DCV
Constant airflow based on
full occupancy
Demand-controlled airflow
based on actual occupancy
Other positive effects are that smaller units and dimensions can
frequently be used for ventilation, heating and cooling as the
maximum airflow and air conditioning can be reduced compared
with constant flows and temperatures. Flexibility will also be
greater if walls are moved or conversions are made in the future.
The slightly higher investment cost is quickly recovered through
significantly lower operating costs.
Example of an office floor
250
CAV
yy Up to 80% saving on fan electricity
yy Up to 40% saving on heating and cooling
electricity
yy Increased comfort through demandcontrolled cooling and heating regulation
yy Increased flexibility in the building
yy Smaller units for ventilation, heating and
cooling
yy Smaller technical room
Airflow, l/s
200
150
100
06:00
2
DCV
08:00
10:00
12:00
Time
14:00
16:00
18:00
Swegon has solutions on all levels
Swegon can offer specific products in most product areas that
deal with air handling. However, the end user will get the most
benefit from our products if they are supplied in the form of
system solutions. The products are designed for straightforward interconnection to work in harmony to provide the highest possible degree of comfort when using the least possible
amount of energy.
The illustration below shows schematic examples of products
and solutions for a demand-controlled system and on the following pages you will find inspiration and practical proposals
for different levels. However, Swegon’s products offer great
potential for object-specific solutions and variations.
Specific product information can be found at
www.swegon.com.
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Chiller & Heat pump
NESTOR
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Internal network/
Internet
Building management system
System
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Sub-­
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All Year Comfort
Super WISE
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GOLD
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Zone
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CONTROL Zone
CONTROL Zone
CONTROL Zone
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Room
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ADAPT Damper
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Passive air diffusers
ADAPT active air diffusers
ADAPT Parasol
3
m
m
System
System
System
Sub-system
Sub-system
Sub-system
Zone
Zone
Zone
Room level
ne
From zone
m
From zone
From zone
Room
Room
Room
Product
Product
Product
(Spare) parts
(Spare) parts
Components
Components
Room
ADAPT
(Spare) parts
ct
Damper
Components
ts
ADAPT active air diffusers
Passive air diffusers
Intelligent damper for variable airflow
ADAPT Parasol
Active air diffusers for variable airflow
ts
ADAPT Colibri
ADAPT Sphere
ADAPT Damper
Selection of passive air diffuser for use together with ADAPT Damper
ADAPT Free
LOCKZONE
EAGLE
HAWK
PELICAN
ADAPT Extract
Comfort module for variable airflow with
integrated intelligence and dampers
ADAPT Parasol
4
Zone
Examples for offices
Room
Low to normal cooling load
Conditions
Room with normal heat load from lighting, computer equipment, persons and
solar radiation from windows.
Product
Varying number of occupants present.
Solution
(Spare) parts
Demand-controlled ventilation and cooling via active supply air diffuser. Control
of valves for radiators.
Components
Components
Flow diagram
1. Active ADAPT Colibri supply air diffuser with integrated
temperature sensor, presence detector, flow measurement and
flow control via motor-driven damper
2. Radiator valve
3. Extract air via transfer air grille to the corridor, CGV/RGV
for instance
Other options
Active supply air diffuser ADAPT Sphere or ADAPT Free
instead of ADAPT Colibri. Air quality sensor as a supplement to
the integrated presence detector in ADAPT Colibri. Extract air
via passive extract air register and ADAPT Damper, or via active
extract air register ADAPT Extract.
Function
Benefits
yy Energy-efficient operation since the room is ventilated,
heated and cooled exactly as called for by the load, neither
more or less.
yy Free cooling can be utilised during a large part of the year.
yy High comfort and draught-free environment.
yy Fast and simple connection.
The presence detector integrated in the supply air diffuser gives
signals for opening or closing the motor-driven damper to the
occupancy flow when the room is occupied and to the minimum
flow setting when the room is unoccupied.
The temperature sensor integrated in the supply air diffuser
gives signals for variable flow increase from occupancy flow to
maximum flow in the event of a cooling requirement and for
regulation of radiator valves in the event of a heating requirement. When the room is unoccupied, the system allows the room
temperature to rise or drop more than it would if the room was
occupied, to save energy.
5
Zone
Examples for offices
Room
Normal to high cooling load
Conditions
Room with high heat load from lighting,
computer equipment, persons and solar
radiation from windows.
Product
Varying number of occupants present.
Solution
(Spare) parts
Demand-controlled ventilation with
cooling and heating via hydronic climate
solution with variable airflow.
Components
Components
Flow diagram
1. Comfort module ADAPT Parasol with supply air, cooling and
heating including valves and valve actuators, as well as integrated presence detector, temperature sensor, condensation
sensor, flow measurement and flow control via the motorised
damper
2. Cooling and heating water
3. Extract air via ADAPT Damper is slave controlled from
ADAPT Parasol
4. Extract air grille, e.g. ALG
Other options
Sensor module placed on the wall instead of integrated in
ADAPT Parasol. Air quality sensor as a supplement to the
integrated presence detector in the sensor module for ADAPT
Parasol. Extract air via transfer air to the corridor. Window
contact for adapted control of the airflow and temperature when
the window is open.
Function
Benefits
yy Energy-efficient operation since the room is ventilated, cooling and heated exactly as called for by the load, neither more
or less.
yy High comfort with provision for individual control.
yy Unique operating and comfort advantages together with
Super WISE and the All Year Comfort GOLD function.
yy Fast and simple connection.
6
The presence detector in the control module gives signals for
opening or closing the motor-driven damper to the occupancy
flow when the room is occupied and to the minimum flow setting
when the room is unoccupied. The temperature sensor gives
signals to control the comfort module water valves. Dampers for
extract air are slave controlled from ADAPT Parasol.
When the room is unoccupied, the system allows the airflow to
drop to the minimum flow and the room temperature to increase
more than it would if the room was occupied, to save energy.
Individual adjustment of the temperature set point value can
occur directly on the sensor module, or the wall-mounted sensor
module.
Zone
Examples for classrooms/conference rooms
Room
Varied air requirement and low to normal cooling load
Conditions
Classroom/conference room with varying load. High demands on air volume
and air quality.
Product
Varying number of occupants present
and load.
(Spare) parts
Solution
Demand-controlled ventilation via room
control damper. Control of valves for
radiators.
Components
1. ADAPT Damper (master) room control damper for extract air
with integrated temperature sensor, air quality sensor (VOC),
flow measurement and flow control via motor-driven damper
2. ADAPT Damper (slave) room control damper for supply air
with integrated temperature sensor, flow measurement and
flow control via motor-driven damper
3. Radiator valves
4. Presence detector
5. Supply air diffuser that manages variable flows and high subtemperature, LOCKZONE, COLIBRI and EAGLE Ceiling
for instance
6. Extract air register, PELICAN Ceiling for instance
Components
Flow diagram
Other options
Extract air via active extract air register ADAPT Extract instead
of passive air diffuser and ADAPT Damper.
Function
Benefits
yy Energy-efficient operation since the room is ventilated and
heated exactly as called for by the load, neither more or less.
yy Free cooling can be utilised during a large part of the year.
yy Ensured air quality via air quality sensor (VOC) that detects
volatile organic substances.
yy If you are renovating a building, the room control damper
can be installed in a corridor, only the presence detector is
needed inside the room.
yy Fast and simple connection.
The presence detector gives signals for opening or closing the
motor-driven room control damper to the occupancy flow when
the room is occupied and to the minimum flow setting when the
room is unoccupied. The extract air damper acts as the master
damper and it slave-controls the supply air damper.
The temperature sensor in the extract air damper gives signals to
regulate radiator valves for a heating requirement and for cooling
by variably increasing the airflow from the occupancy flow to
max. flow. When the room is unoccupied, the system allows the
room temperature to rise or drop more than it would if the room
was occupied, to save energy. The air quality sensor (VOC) increases the airflow if the content of impurities in the air exceeds
the preset limit value.
7
Zone
Examples for conference rooms
Varied air requirement and normal to high cooling load
Room
Conditions
Conference room irregularly occupied.
High demands on air volume and
temperature regulation under maximum
load conditions.
Product
Varying number of occupants present
and load.
(Spare) parts
Solution
Demand-controlled ventilation, cooling
and heating via hydronic climate solution
and damper.
Components
Components
Flow diagram
1. Comfort module ADAPT Parasol with supply air, cooling and
heating including valves and valve actuators, as well as integrated presence detector, temperature sensor, condensation
sensor, flow measurement and flow control via the motorised
damper
2. Sensor module for ADAPT Parasol with integrated presence
detector and temperature sensor, placed on the wall
3. Cooling water and heating water
4. Extract air register, PELICAN Ceiling for instance
5. Extract air via ADAPT Damper is slave controlled from
ADAPT Parasol
6. Window contact
Other options
Only cooling water in PARASOL and control of radiator valves
for heating. Air quality sensor as a supplement to the integrated
presence detector in the sensor module for ADAPT Parasol. Extract air via transfer air to the corridor. If a greater air quantity is
needed, supplement with active air diffusers or ADAPT Damper
and passive air diffusers.
Benefits
yy Energy-efficient operation since the room is ventilated,
heated and cooled exactly as called for by the load, neither
more or less.
yy The cooling sequence can be chosen for the best comfort or
for the best economy.
yy Very high comfort and air quality with provision for
individual control.
yy Fast and simple connection.
8
Function
The sensor module presence detector gives signals for opening
or closing the motor-driven damper to the occupancy flow when
the room is occupied and to the minimum flow setting when the
room is unoccupied. The temperature sensor gives signals to
control the comfort module water valves. Dampers for extract air
are slave controlled from ADAPT Parasol.
When the room is unoccupied, the system allows the airflow to
drop to the minimum flow and the room temperature to increase
or decrease more than it would if the room was occupied, to save
energy. The window switch gives, with an open window, signals
to shut off heating, cooling and ventilation and with a risk of
frost for increased heating.
The cooling sequence can be chosen for the best comfort (water
cooling first, then increased airflow) or for the best economy
(increased airflow first, then water cooling).
Individual adjustment of the temperature set point value can occur on the sensor module.
Demand-controlled ventilation is already here
PWC, offices, Oslo, Norway
Elit Grand Palas, hotel, Istanbul, Turkey
Debenhams, department store, Llandudno, UK
AMC Hospital - Beddenhuis, hospital, Amsterdam, The Netherlands
Best Western, hotel, Årjäng, Sweden
Roissy Parc Mail, office, Paris, France
9
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Zone level
Infrastruktur
System
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Sub-system
From sub-system
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Zone
Infrastruktur
Infrastruktur
Room
Infrastruktur
Infrastruktur
System
System
Product
System
System
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Zone
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CONTROL
Sub-system Zone
CONTROL
Sub-system
(Spare) parts
Zone
Zone
Components
To room
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rts
CONTROL
Sub-system Zone
Zone
To room
Zone
To room
To room
Room
Room
Room
Product
Product
Product
Product
(Spare) parts
(Spare) parts
(Spare) parts
Components
Components
Components
Components
CONTROL Zone
Zone damper CONTROL Zone is used to manage
flow changes faster in large systems. CONTROL Zone
can be used both as a master and slave damper for
both supply and extract air. CONTROL ZONE can also
be used during renovation through smart pressure
and flow control.
10
CONTROL
Router
Sub-system
Room
(Spare) parts
nts
Zone
CONTROL Router
CONTROL Router is an intelligent communication unit
that can be used at the zone
level when a constant air flow
is wanted but with demandcontrol of heat or cooling
energy for waterborne room
products, e.g. PARASOL,
PACIFIC or PARAGON.
Sub-system
Examples for zone control
Provides stable and economical operation
Zone
Room
Zone 1
Zone 2
Product
(Spare) parts
Components
Balanced ventilation at room level
1. CONTROL Zone damper with integrated damper actuator for
supply air (pressure controlled)
2. Pressure sensor for CONTROL Zone damper, supply air
3. CONTROL Zone damper with integrated damper actuator for
extract air (pressure controlled)
4. Pressure sensor for CONTROL Zone damper, extract air
5. Office room with active supply air diffuser/damper and extract
air register/damper for balanced ventilation
6. Passive supply air diffuser in cloakroom for constant supply
airflow
7. Passive extract air register in toilet group for constant extract
airflow
Function
In a smaller ventilation system, the GOLD air handling unit
manages the necessary pressure control. Zone dampers that
divide the system into smaller zones are used in larger systems.
The zone dampers react quicker to flow changes than they would
if the air handling unit was located centrally and in this way
provides a stable ventilation system with fewer motor movements
in the system.
No duct pressure is throttled away unnecessarily and the duct
pressure can be kept as low as 40–60 Pa in the zone, with provides economical operation.
In the zone example above, we see that the zone dampers in the
WISE system manage both a balanced solution (zone 1) and
mixed solution (zone 2).
Central extract air and balanced ventilation ​
on a room level
1. CONTROL Zone damper with integrated damper actuator for
supply air (pressure controlled)
2. Pressure sensor for CONTROL Zone damper, supply air
3. CONTROL Zone damper with integrated damper actuator
central extract air in the corridor (pressure controlled)
4. Pressure sensor for CONTROL Zone damper, central extract
air
5. SLAVE Zone damper with integrated damper actuator extract
air (slave-controlled by zone damper 1)
6. Office room with active supply air diffuser/damper and extract
air register/damper for balanced ventilation
7. Office room with active supply air diffuser and extract air
register for outflow to the corridor
8. Passive supply air diffuser in cloakroom for constant supply
airflow
9. Passive extract air register in toilet group for constant extract
airflow
Benefits
yy Quickly adjusts to pressure fluctuations due to the variable
airflows in the rooms.
yy No unnecessary throttling of duct pressure.
yy Low duct pressure in the zone; provides a quiet ventilation
system and economical operation.
11
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Subsystem level
Infrastruktur
System
m
Sub-system
m
From system
Zone
Infrastruktur
Sub-system
Infrastruktur
Super WISE
All Year Comfort
Room
System
ne
Infrastruktur
System
System
GOLD
Product
Sub-system
Sub-system
To zone
m
Sub-system
To zone
To zone
(Spare) parts
Zone
Zone
Zone
Room
Room
Components
ct
Room
Air handling unit GOLD
All Year Comfort
Product
Product
Product
(Spare) parts
(Spare) parts
(Spare) parts
Components
Components
Components
ts
ts
Control unit for primary circuits with cooling
and/or heating water.
Super WISE
Complete and compact air handling units in
several sizes and designs and with built-in control
equipment.
Communication unit with building management system, GOLD air handling units and
underlying products included in the WISE
system and CONDUCTOR.
12
System
Sub-system example
Air handling unit GOLD
GOLD is the name of a series of complete air handling units for
comfort ventilation in several sizes for airflows up to approximately 14 m3/s (50,400 m3/h). GOLD is available with a rotary
heat exchanger, cross-flow plate heat exchanger or coil heat
exchanger.
The unit has low energy fans with newly developed EC technology that manage large flow ranges with maintained efficiency.
The integrated control equipment has a large number of control
functions of which the following are well-suited for demandcontrolled ventilation:
−−Pressure regulation of fans
−−Slave control of fans
−−Compensation for outdoor air temperature
−−Summer night cooling
−−Demand-control of cooling and heating water production via
the SMART Link function
−−Demand-control of the supply flow temperature for cooling
water and heating water via the All Year Comfort control unit
All Year Comfort
Sub-system
Zone
Room
Product
GOLD is controlled via a user-friendly touch screen, but can also be
controlled via mobile phone, computer or Building management
system.
(Spare) parts
All Year Comfort is a supplementary control unit for GOLD in
order to demand-control cooling and heating water to the unit's
cooling and heating coils or to hydronic room products.
All Year Comfort controls valves and/or pumps so that the
required supply flow temperature is always obtained. Settings are
available for outdoor compensation, room compensation, night
compensation and dew point compensation to optimise adaptation to the system's needs.
Components
Pumps and valves can be alarm monitored and exercised during
seasonal downtime.
All Year Comfort can control the primary water circuit to the unit's
cooling and heating coils or to waterborne room products.
Super WISE
The Super WISE communication unit has contact with all intelligent dampers and room products. Super WISE communicates
with the GOLD air handling unit in order to minimise the pressure required in main ducts.
The webpage built into Super WISE is automatically configured
based on connected products and shows the system in a clear tree
structure. Actual values and set points can be viewed and changed
all the way down to the room level. Only requires an ordinary web
browser (Internet Explorer, for instance).
Communication with Building management system takes place
via Modbus RTU/TCP or BACnet TCP and EXOline.
Example of the webpage in Super WISE.
13
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System level
Chiller & Heat pump
NESTOR
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Internal network/
Internet
Building management system
System
Infrastruktur
m
System
To sub-system
ne
Sub-system
m
Zone
Chillers and Heat pumps
Swegon can offer a comprehensive range of Chillers
Room
and Heat pumps for comfort ventilation.
Two examples:
ct
Product
NESTOR
ts
(Spare) parts
Components
ts
TETRIS
Air-cooled water Chillers in several sizes and configurations with a cooling capacity up to 700 kW.
Also available in a reversible model.
Central communication unit acting as the
connection point for all intelligent Swegon
products in the building.
TETRIS W
Water-cooled water Chillers in several sizes and configurations with a cooling capacity up to 615 kW.
Also available in a reversible model and as a Heat
pump only.
14
Infrastruktur
System example
System
NESTOR and Chiller
NESTOR is a system level communication unit.
NESTOR interconnects all intelligent Swegon products in the building to a single point.
NESTOR
LAN/Modem
Sub-system
NESTOR utilises the intelligence of all connected
products, creates common alarm lists, establishes
priority for heating and cooling and helps to optimise
temperatures for heating and cooling for up to 8 subsystems in the building.
Zone
NESTOR can also be used in virtual internal networks
between up to 8 buildings for central control of ventilation and the indoor climate.
GOLD
Super WISE
Room
Chiller
GOLD as a system product
Product
SMART Link
The GOLD air handling unit has an advanced control system
that provides demand-controlled ventilation in smaller systems
without dampers or communication units. Applications include
assembly halls, stores, production premises and suchlike.
For example, the installation could consist of GOLD air handling units with a combi-type water coil, a reversible cooling
unit, duct system, diffusers, temperature sensors and air quality
sensors.
Via the SMART Link function, the reversible cooling unit produces demand-controlled cooling water, when there is a cooling
load, and heating water, when there is a heating load.
On indication from the air quality sensor, the air flow is regulated variably based on the demand and, on indication from the
temperature sensor, the temperature is regulated with the help of
the Heating & Cooling Boost control functions.
GOLD
(Spare) parts
Components
Reversible
Chiller
Passive air diffusers suitable for
both chilled and heated air
15
EN–DCV overview 2016–03–01
We make every breath count.
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