Home

Stavke u vašoj mapi za preuzimanje

Mapa za preuzimanje je prazna
Stavka/stavke u mapi za preuzimanje

!

Pogledaj mapu za preuzimanje
Idite u centar za preuzimanje

Artikli u vašoj košarici

Košarica je prazna.
artikl/artikla u košarici

Solution

Količina:
Ukupno:
Pogledaj košaricu / popis projekata
Otvori drugi popis projekata
Izvezi kao datoteku u formatu .xlsx Izvezi kao datoteku u formatu .csv Uvezi iz datoteke u formatu .csv Uvezi iz datoteke u formatu .bel
Discontinued Products
  • Dobrodošli, {0} - Moj račun

    Moj račun


    • Odjava
    Prijavite se / Registrirajte se
  • 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
    • Refrigeration 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+ Zamenski proizvodi
    • RetroFIT+ Partner

    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
    • Tender Texts
    • Customer-specific products
    • Download Center
    • Service Tools / Apps
    • Software / Plug-ins / CAD
    • File Archive (Bus & System Integration)
    • Product and Price Catalogue / Datanorm
    • General Conditions of Sales and Delivery
    • Belimo Cloud: Login / Register
    • Thermal energy meter activation
    • Videos

    Belimo Education

    • Belimo Experience Centre (Vienna, Austria)
    • Belimo Experience Center (Hinwil, Switzerland)
    • Belimo Experience Center (Großröhrsdorf, Germany)
    • 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
    • Slike i logotipi
    • Exhibitions & Events
    • Kонтакти
    Navigation_Teaser_2
  • Contact Us
  • Austrija

    Amerike

    • Brazil
    • Kanada
    • Karibi, Latinska Amerika i Sjedinjene Američke Države

    Europa, Bliski istok i Afrika

    • Albania
    • Austrija
    • Belgija
    • Bjelorusija
    • Bosna i Hercegovina
    • Bugarska
    • Češka Republika
    • Danska
    • Estonija
    • Finska
    • Francuska
    • Grčka
    • Gruzija
    • Hrvatska
    • Irska
    • Italija
    • Izrael
    • Južnoafrička Republika
    • Kazahstan
    • Latvija
    • Litva
    • Mađarska
    • Nizozemska
    • Njemačka
    • Norveška
    • Poljska
    • Rumunjska
    • Saudijska Arabija
    • Sjeverna Makedonija
    • Slovačka
    • Slovenija
    • Španjolska
    • Srbija i Crna Gora
    • Švedska
    • Švicarska
    • Turska
    • Ujedinjena Kraljevina
    • Ujedinjeni Arapski Emirati (FZE)
    • Ukrajina

    Azija i Pacifik

    • Australija
    • Filipini
    • Indija
    • Indonezija
    • Japan
    • Kambodža
    • Kina
    • Koreja
    • Malezija
    • Mjanmar
    • Novi Zeland
    • PUP Hong Kong, Kina
    • PUP Makao, Kina
    • Singapur
    • Tajland
    • Tajvan, Kina
    • Vijetnam
    Srpski

    Deutsch

    English

    Magyar

    Slovenščina

    Slovenský

    Srpski

    македонски

    Hrvatski

    Srpski

  • Austrija

    Amerike

    • Brazil
    • Kanada
    • Karibi, Latinska Amerika i Sjedinjene Američke Države

    Europa, Bliski istok i Afrika

    • Albania
    • Austrija
    • Belgija
    • Bjelorusija
    • Bosna i Hercegovina
    • Bugarska
    • Češka Republika
    • Danska
    • Estonija
    • Finska
    • Francuska
    • Grčka
    • Gruzija
    • Hrvatska
    • Irska
    • Italija
    • Izrael
    • Južnoafrička Republika
    • Kazahstan
    • Latvija
    • Litva
    • Mađarska
    • Nizozemska
    • Njemačka
    • Norveška
    • Poljska
    • Rumunjska
    • Saudijska Arabija
    • Sjeverna Makedonija
    • Slovačka
    • Slovenija
    • Španjolska
    • Srbija i Crna Gora
    • Švedska
    • Švicarska
    • Turska
    • Ujedinjena Kraljevina
    • Ujedinjeni Arapski Emirati (FZE)
    • Ukrajina

    Azija i Pacifik

    • Australija
    • Filipini
    • Indija
    • Indonezija
    • Japan
    • Kambodža
    • Kina
    • Koreja
    • Malezija
    • Mjanmar
    • Novi Zeland
    • PUP Hong Kong, Kina
    • PUP Makao, Kina
    • Singapur
    • Tajland
    • Tajvan, Kina
    • Vijetnam
  • DE EN HU SL SK SR MK HR BA
  • Dobrodošli, {0} - Moj račun

    Moj račun


    • Odjava
    Prijavite se / Registrirajte se
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
    • Refrigeration 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+ Zamenski proizvodi
    • RetroFIT+ Partner

    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
    • Tender Texts
    • Customer-specific products
    • Download Center
    • Service Tools / Apps
    • Software / Plug-ins / CAD
    • File Archive (Bus & System Integration)
    • Product and Price Catalogue / Datanorm
    • General Conditions of Sales and Delivery
    • Belimo Cloud: Login / Register
    • Thermal energy meter activation
    • Videos

    Belimo Education

    • Belimo Experience Centre (Vienna, Austria)
    • Belimo Experience Center (Hinwil, Switzerland)
    • Belimo Experience Center (Großröhrsdorf, Germany)
    • 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
    • Slike i logotipi
    • Exhibitions & Events
    • Kонтакти
    Navigation_Teaser_2
  • Contact Us
  • Discontinued Products
  • Stavke u vašoj mapi za preuzimanje

    Mapa za preuzimanje je prazna
    Stavka/stavke u mapi za preuzimanje

    !

    Pogledaj mapu za preuzimanje
    Idite u centar za preuzimanje
  • Artikli u vašoj košarici

    Košarica je prazna.
    artikl/artikla u košarici

    Solution

    Količina:
    Ukupno:
    Pogledaj košaricu / popis projekata
    Otvori drugi popis projekata
    Izvezi kao datoteku u formatu .xlsx Izvezi kao datoteku u formatu .csv Uvezi iz datoteke u formatu .csv Uvezi iz datoteke u formatu .bel
belimo_6-Branch-Flow-and-Delta-T-Control_1920x350px

Branch Flow and Delta T Control

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

Branch Flow System

Large distributed systems, either as a building or part of a larger district system, need good delta T to operate effectively.

Application of the Energy Valve on every unit might not always be practical, and installation of the Energy Valves on the main risers or entry to the building for district cooling isn’t advisable, as Delta T Manager may starve individual units while trying to manage a whole building.

Schematic

The system shown in the figure, using Belimo Energy Valves™, provides the following advantageous functions:

  • The flow to the branch is monitored, and can be set to prevent overflow to the floor and also monitor the delta T
  • Energy on to each branch is monitored. This can be logged and alarmed if demand from any one branch increases dramatically
  • Flow through each terminal unit can now be verified using the flow meter attached to the Energy Valve, by opening them one at a time. Closing all valves will confirm if the valves are allowing water past when closed, or if a bypass valve is open
  • Full branch transparency (volumetric flow, temperatures, cooling/heating output, etc.) with data recording and Belimo Cloud connection

 

branch-flow-application-schematic


Order the new Belimo Energy Valve™ now

Learn how the Energy Valve improves your branch flow





Energy Valve
Shop now




Common Issues in Terminal Unit Branches and How the Belimo Energy Valve™ addresses them

Larger buildings have complex distribution systems and are occupied, meaning that the retrofit of an Energy Valve on each terminal is impractical. However, lack of capacity at peak times or fines from district plant providers often drive building owners to look for a solution. The figure below shows a pressure dependent system with a single balancing valve. This is a typical contract installation of multiple low flow heating units, for example, used for underfloor heating.



Mechanical balancing valves only allow for a static balancing of the total flow to the floor, with unknown flow rates to each individual unit
This can be remedied by retrofitting Belimo Energy Valves™ to every branch. Monitoring the flow and delta T being supplied to a number of terminal units allows facilities teams to identify problem ‘passing units’ and bypasses left open. This focus improves efficiency quickly by offering a targeted approach to overcoming the issues being experienced. This involves replacing passing or stuck terminal valves with 'air bubble tight' zone valves, or closing a bypass valve that has been inadvertently left open.


Our need to operate more efficient buildings, drives the demand to check water flow rates not just once but multiple times during each season. Experience tells us tenant fit outs or changes to hydronic system adversely effect non-PI installations. However, even with PI valves installed, checking the identifying passing valves and open bypasses should remain a priority to keep delta T to an acceptable range.

By using an EV in the branch line, we are able to measure the total flow to the floor and also to each individual unit, if opened sequentially



With an EV, the branch flow can be measured when each valve is opened, allowing for verification


Ghost energy/passing/leakage is typically used to describe the process where water is unintentionally passing from the flow side to the return. A bypass is left open after maintenance or at axial valve leakage rates. These small rates quickly add up when a large number of them are applied. The rate at which these valves pass or leak is made worse over time by the accumulation of dirt on the seats of the valves.



An accidentally open bypass valve may not be discovered for weeks, months or even years

By using an EV in the branch line, we are able to measure the total flow to the floor and to each individual unit. You can ensure bypasses are closed and valves are not leaking. Should a number of terminal valves suffer from leakage, the characterised ball valve technology in the EV can be closed, hence providing a stop to the wastage when the branch is not in use.



With an EV, both leaking short-stroke valves or an open bypass can be clearly identified


Often, terminal units are statically balanced, which leads them to overflow and deliver low delta T when in part load. Valves may be allowing water past them when they should be closed. Sometimes, even a bypass left open can stay undetected, reducing the pressure and dragging the delta T down.



Low delta T syndrome

The Delta T Manager, integrated in the Belimo Energy Valve™, is a function that continuously measures the temperature spread. This information can either be used to raise an alarm while you are troubleshooting the branch, looking for passing/leaking valves or bypasses left open. Once the branch is performing as well as it can, you can enable Delta T Manager to limit overflows to the branch.



Delta T Manager

Success Story: Ludmillenstift hospital in Meppen/Germany

PIC_RP_Energy-Valve_Ludmillenstift-Meppen_DE

Intelligent Energy Valve solves longstanding hydraulics problems

The Ludmillenstift hospital in Meppen/Germany is renowned well beyond the local area for its standard of medical care, state-of-the-art diagnostic and therapeutic technology and its pleasant atmosphere. However, a large number of modernisations over the years, in the form of extensions or modifications, resulted in problems in the hospital's hydraulic distributor circuits. These have finally been rectified through the use of Belimo Energy Valves™.

  • Success Story - Hospital Ludmillenstift, Germany (pdf - 6,98 MB)

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}}
Contact Us Privacy Policy Change privacy settings Safety Notes General Terms and Conditions Imprint
+43 1 7490361 0
Subscribe
BELIMO Automation Handelsgesellschaft m.b.H, Brunner Straße 63/20, 1230 Vienna (Austria)