Home
0

Items in your download folder

Download folder is empty
View download folder
0

Items in your cart

Cart is empty.
View Cart / Project List
Export as .xlsx Export as .csv Import from .csv Import from .bel
Discontinued Products
  • Welcome, {0} - My account

    My account


    • Logout
    Login/Register
  • Products

    Actuators

    • Actuator Sizing and Selection
    • Non Fail-Safe Actuators
    • Fail-Safe Actuators
    • Actuators for Harsh Environmental Conditions
    • Fast Running Actuators
    • Linear Actuators
    • Fire Damper Actuators
    • Smoke Control Damper Actuators
    • Variable Air Volume
    • Valve Actuators

    Valves

    • Valve Sizing and Selection
    • Belimo Energy Valve™
    • Pressure Independent Control Valves
    • Zone Valves
    • Characterised Control Valves
    • Ball Valves
    • Butterfly Valves
    • Globe Valves
    • Potable Water Valves
    • Valve Actuators

    Sensors / Meters

    • Sensors/Meters Selection
    • Duct Sensors (Air)
    • Pipe Sensors (Water)
    • Outdoor Sensors (Air)
    • Room Units
    • Thermal Energy Meters (TEM)
    • Belimo Energy Valve™ with TEM

    Systems

    • Belimo Energy Valve™
    • Room Solutions
    • Bus & System Integration
    • Fire & Smoke
    • Energy Manifold
    • Belimo ZoneEase™ VAV

    RetroFIT+

    • RetroFIT+ Product Replacement Tool
    • Make the Most Out of It
    • Upgrade Your System
    • Start with Minimal Effort
    • RetroFIT+ Replacement Products

    Applications

    • Data Centre Cooling Aplications
    • Air Handling Units (AHUs)
    • Room and Zone Applications
  • Support

    Services

    • Actuator Sizing and Selection
    • Valve Sizing and Selection
    • Sensors/Meters Selection
    • RetroFIT+ Product Replacement Tool
    • Customer-specific products
    • Download Center
    • Service Tools / Apps
    • Software / Plug-ins / CAD
    • File Archive (Bus & System Integration)
    • Product and Price Catalogue
    • General conditions of sales and delivery
    • Belimo Cloud: Login / Register
    • Thermal energy meter activation
    • Videos

    Belimo Education

    • Belimo Experience Center (Hinwil, Switzerland)
    • Company Tour (Hinwil, Switzerland)
    • Webinars
    • Training

    Applications

    • Data Centre Cooling Aplications
    • Air Handling Units (AHUs)
    • Room and Zone Applications
  • About Us

    Belimo

    • Profile
    • Our Values
    • Sustainability
    • History
    • Awards & Recognitions
    • Suppliers
    • Affiliated Organisations
    • Quality @ Belimo

    Jobs & Careers

    • Jobs
    • Culture@BELIMO
    • Benefits
    • Recruitment process
    • Careers
    Navigation_Teaser_1

    Investor Relations

    • Key Figure Comparison
    • Reports and Presentations
    • Ad hoc and Corporate News
    • Belimo Share
    • Corporate Governance
    • Annual General Meeting
    • Financial Calendar
    • Contact

    Media

    • News
    • Highlights
    • Success Stories
    • Videos
    • Pictures and Logos
    • Exhibitions & Events
    • Contacts
    Navigation_Teaser_2
  • Contact Us
  • Ireland

    Americas

    • Brazil
    • Canada
    • Caribbean, Latin America, and United States

    Europe, Middle East & Africa

    • Albania
    • Austria
    • Belarus
    • Belgium
    • Bosnia & Herzegovina
    • Bulgaria
    • Croatia
    • Czech Republic
    • Denmark
    • Estonia
    • Finland
    • France
    • Georgia
    • Germany
    • Greece
    • Hungary
    • Ireland
    • Israel
    • Italy
    • Kazakhstan
    • Latvia
    • Lithuania
    • Netherlands
    • North Macedonia
    • Norway
    • Poland
    • Romania
    • Saudi Arabia
    • Serbia & Montenegro
    • Slovakia
    • Slovenia
    • South Africa
    • Spain
    • Sweden
    • Switzerland
    • Turkey
    • Ukraine
    • United Arab Emirates (FZE)
    • United Kingdom

    Asia Pacific

    • Australia
    • Cambodia
    • China
    • Hong Kong SAR, China
    • India
    • Indonesia
    • Japan
    • Korea
    • Macau SAR, China
    • Malaysia
    • Myanmar
    • New Zealand
    • Philippines
    • Singapore
    • Taiwan, China
    • Thailand
    • Vietnam
    English
  • Ireland

    Americas

    • Brazil
    • Canada
    • Caribbean, Latin America, and United States

    Europe, Middle East & Africa

    • Albania
    • Austria
    • Belarus
    • Belgium
    • Bosnia & Herzegovina
    • Bulgaria
    • Croatia
    • Czech Republic
    • Denmark
    • Estonia
    • Finland
    • France
    • Georgia
    • Germany
    • Greece
    • Hungary
    • Ireland
    • Israel
    • Italy
    • Kazakhstan
    • Latvia
    • Lithuania
    • Netherlands
    • North Macedonia
    • Norway
    • Poland
    • Romania
    • Saudi Arabia
    • Serbia & Montenegro
    • Slovakia
    • Slovenia
    • South Africa
    • Spain
    • Sweden
    • Switzerland
    • Turkey
    • Ukraine
    • United Arab Emirates (FZE)
    • United Kingdom

    Asia Pacific

    • Australia
    • Cambodia
    • China
    • Hong Kong SAR, China
    • India
    • Indonesia
    • Japan
    • Korea
    • Macau SAR, China
    • Malaysia
    • Myanmar
    • New Zealand
    • Philippines
    • Singapore
    • Taiwan, China
    • Thailand
    • Vietnam
  • Welcome, {0} - My account

    My account


    • Logout
    Login/Register
Home
  • Products

    Actuators

    • Actuator Sizing and Selection
    • Non Fail-Safe Actuators
    • Fail-Safe Actuators
    • Actuators for Harsh Environmental Conditions
    • Fast Running Actuators
    • Linear Actuators
    • Fire Damper Actuators
    • Smoke Control Damper Actuators
    • Variable Air Volume
    • Valve Actuators

    Valves

    • Valve Sizing and Selection
    • Belimo Energy Valve™
    • Pressure Independent Control Valves
    • Zone Valves
    • Characterised Control Valves
    • Ball Valves
    • Butterfly Valves
    • Globe Valves
    • Potable Water Valves
    • Valve Actuators

    Sensors / Meters

    • Sensors/Meters Selection
    • Duct Sensors (Air)
    • Pipe Sensors (Water)
    • Outdoor Sensors (Air)
    • Room Units
    • Thermal Energy Meters (TEM)
    • Belimo Energy Valve™ with TEM

    Systems

    • Belimo Energy Valve™
    • Room Solutions
    • Bus & System Integration
    • Fire & Smoke
    • Energy Manifold
    • Belimo ZoneEase™ VAV

    RetroFIT+

    • RetroFIT+ Product Replacement Tool
    • Make the Most Out of It
    • Upgrade Your System
    • Start with Minimal Effort
    • RetroFIT+ Replacement Products

    Applications

    • Data Centre Cooling Aplications
    • Air Handling Units (AHUs)
    • Room and Zone Applications
  • Support

    Services

    • Actuator Sizing and Selection
    • Valve Sizing and Selection
    • Sensors/Meters Selection
    • RetroFIT+ Product Replacement Tool
    • Customer-specific products
    • Download Center
    • Service Tools / Apps
    • Software / Plug-ins / CAD
    • File Archive (Bus & System Integration)
    • Product and Price Catalogue
    • General conditions of sales and delivery
    • Belimo Cloud: Login / Register
    • Thermal energy meter activation
    • Videos

    Belimo Education

    • Belimo Experience Center (Hinwil, Switzerland)
    • Company Tour (Hinwil, Switzerland)
    • Webinars
    • Training

    Applications

    • Data Centre Cooling Aplications
    • Air Handling Units (AHUs)
    • Room and Zone Applications
  • About Us

    Belimo

    • Profile
    • Our Values
    • Sustainability
    • History
    • Awards & Recognitions
    • Suppliers
    • Affiliated Organisations
    • Quality @ Belimo

    Jobs & Careers

    • Jobs
    • Culture@BELIMO
    • Benefits
    • Recruitment process
    • Careers
    Navigation_Teaser_1

    Investor Relations

    • Key Figure Comparison
    • Reports and Presentations
    • Ad hoc and Corporate News
    • Belimo Share
    • Corporate Governance
    • Annual General Meeting
    • Financial Calendar
    • Contact

    Media

    • News
    • Highlights
    • Success Stories
    • Videos
    • Pictures and Logos
    • Exhibitions & Events
    • Contacts
    Navigation_Teaser_2
  • Contact Us
  • Discontinued Products
  • 0

    Items in your download folder

    Download folder is empty
    View download folder
  • 0

    Items in your cart

    Cart is empty.
    View Cart / Project List
    Export as .xlsx Export as .csv Import from .csv Import from .bel
belimo_4-Chilled-Beam_1920x350px

Chilled Beam

  1. Home
  2. Belimo Energy Valve™ and Thermal Energy Meter
  3. HVAC Applications

What is a Chilled Beam?

A chilled beam is a type of convection HVAC system designed to heat and cool spaces, typically deployed in open plan office buildings. Tubes are passed through a 'beam' (a heat exchanger), either directly integrated into a suspended ceiling, or hanging below the suspended ceiling of a room.

There are two types of chilled beams in use today:

  • A passive beam chills the air around it, forming a natural convection current where cooled air falls and warmer air rises to replace it, therefore cooling the space.
  • Active chilled beams are widely used as well, and use air from an AHU to induce additional airflow over the beam.

The principal challenge with this application is the control of the water temperature and flow rate, assuring that the surface temperature of the beam doesn’t fall below the dew point of the space.

Schematic

chilled-beam-schematic

The figure shows the schematic of a chilled beam application using an Energy Valve. This provides the following control functionality:

  • Accurate measurement of volumetric fl ow and the supply and return temperature
  • Monitoring and control of thermal power of the unit
  • Permanent hydronic balancing of the water fl ow at changing system pressures and in any load condition
  • Optional integration of a dew point sensor switch
  • Required delta T on chilled beams is very low, making managing them, critical


Order the new Belimo Energy Valve™ now

Learn how the Energy Valve improves your chilled beam





Energy Valve
Shop now




Common Issues in Chilled Beam Applications and Why You Should Choose the Belimo Energy Valve™

Large chilled water systems are dynamic in nature, with pressure fluctuations caused by pump speed and valve position changes. Statically balanced systems, as the name suggests, are unable to deal with these dynamic changes and, as a result, flow rates through each unit fluctuates with pressure changes.
The dynamic balancing function of a pressure independent valve handles pressure fluctuations in the system, and assures that the flow is maintained on the defined setpoint.

Dynamic Balancing of a Chilled Beam


Low water temperatures and insufficient humidity control can lead to condensate forming on the chilled beam, and can subsequently damage furniture of office equipment that can be costly. However, conservative supply water temperatures can result in insufficient cooling capacity.



Condensation of humid air on the cold coil surface. The supplied cooling water needs to be above the indoor dew point to prevent condensation

Using the more accurate and responsive immersion flow sensor from the Belimo Energy Valve™, DDC systems are able to detect and close-off water flows before condensate forms on the chilled beams. Reliable data from both the space and the water temperatures is the key to maximising chilled beam performance, while minimising the risk of condensate forming. An outdoor humidity/temperature sensor, such as the Belimo 22UTH-11, can be used to measure the outdoor air conditions and to adapt the AHU-control accordingly.

Supply air into the occupied space, and the circulated air from the room, pass over the coils of the chilled beam. The indoor dew point must be maintained below the surface temperature of the chilled beam coil to prevent condensation water dropping from the ceiling.

The primary air system in the AHU is used to offset the space latent load, and it typically maintains the indoor dew point at or below 13 °C [55 °F] to prevent condensation. Also, the water temperature delivered to the beams is typically maintained between 14 °C [58 °F] and 16 °C [60 °F], sufficiently above the dew point of the space.

Pro Tip

Consult local standards on recommended room air temperatures and humidity values (or maximum values), as well as recommended cooling water temperatures If you have smaller cooling loads in the room or large cooling surfaces, the cooling water temperatures can be raised by a few degrees (for example, up to 18 °C). It should still be possible to maintain sufficient cooling in the room, and thus dehumidification can be carried out in an energy saving way.

Application Example

In the figure, a Chilled Beam is not working as expected. Design water flow should be 0.12 l/s [1.9 GPM], with delta T at 3 °C [1.5 °F], and a differential pressure across the loop of 1 bar [14.5 PSI]. However, due to the pressure changes in the system, delta P increases from 1 to 2 bar [14.5 to 29 PSI], and different loads are needed. The chilled beam is receiving 25% more water than design. This results in poor comfort in the ambient and lowers the efficiency of the heat transfer.

Chilled beam with a pressure dependent valve
Using the mechanical pressure independent valve, PIQCV, guarantees the design flow 0.12 l/s [1.9 GPM], even when pressure fluctuations happen in the system. This results in better control and comfort.

Chilled beam using a mechanical PI valve

The Energy Valve will keep the flow as designed regardless of pressure fluctuations, at 0.12 l/s [1.9 GPM]. It will also manage the delta T over the coil and provide all essential data regarding flow, temperatures and energy to the BMS. Using the data available from the EV, many other value-added features are available, such as early detection of likely condensate issues.



Chilled beam using an Energy Valve

As shown below, the Energy Valve is on the same network as the sensor and the BMS head-end PC. The BMS is looking at the water flow temperature and calculating the dew point, using the RH and temperature data from the room unit. The BMS has seen the entering water temperature is at dew point, and has commanded the valve to close, in order to prevent condensate forming on the unit. The Delta T manager will keep your beams optimized when air flows over the coil vary.



Chilled beam using an Energy Valve, with the BMS calculating the dew point with the input from a room sensor

Order the Belimo Energy Valve™ in our Webshop

  • Buy now

More about the Belimo Energy Valve™

  • More information

The Belimo Energy Valve™ in other HVAC Applications

  • Read more

Welcome to Belimo {{js-currentCountryName}}

{{js-currentCountryText}}
Belimo Contacts Privacy Policy Change privacy settings Safety Notes General conditions of sales and delivery Imprint
+44 1932 260460
Subscribe to newsletter
BELIMO Automation UK Limited, Suite 001a, The Airport Hub, 1 Fury Park Industrial Estate, Swords Road, Santry, Dublin 9 (Ireland)