WS 10: BELIMO Water Solutions - Energy Efficiency in modern buildings

Please find Opens internal link in current windowhere the Workshop Presentations

Monday, May 23, 15.30-17.30 (Meeting room: Laugstuen)


BELIMO Automation AG -


Dr. Marc Thuillard - Belimo Automation AG

Dipl. Ing. Forest Reider - Belimo Automation AG

Dipl. Ing. Christian Luchsinger - Belimo Automation AG


  • Hydraulic Balancing:

The proper balancing of hydraulics flows is an important factor contributing to the stability of HVAC in a building. Balancing can be achieved through different approaches using an electronic or a mechanic pressure-independent valve. Besides balancing an electronic solution can be expanded to a performance device, known as Energy Valve, capable of monitoring and optimizing energy consumption. This concludes the introduction. This talk will focus on electronic balancing methods and discuss two approaches for achieving this goal. The first method uses an electronic pressure-independent valve (ePIV).

  • Pressure independence for 4-pipe systems:

In state of the art office buildings the main comfort demand is more and more on cooling with a general low heating demand. Therefore, a 4-pipe system with one heat exchanger like heating/cooling ceiling is likely and very common. To run such a system in an efficient way it is important that the pump runs efficient, independent on the load. For reaching this, different flows for heating and cooling are required combined with the lowest possible pressure loss. The advantages and disadvantages of mechanic and electronic pressure-independent solutions are highlighted with three different examples in relation with the established Belimo 6-Way Zone-Valve.

  • New solution for cooling coil management:

In this talk, we will show how the ePIV can be expanded into a more intelligent HVAC device by adding two temperature sensors and advanced logic, resulting in the Belimo Energy Valve™.

  • Case study 1 MIT, Boulder:

Experimental results obtained during field tests at Massachusetts Institute of Technology (MIT), Boston and University of Colorado, Boulder: Saving energy and primary costs by preventing DeltaT degradation.  


  • Case study 2 Singapore:

Test at Nanjang Technical University (NTU), Singapore. We will show how the measurement of air enthalpy could further enhance the function of the Energy Valve.

  • Case study 3: Hospital Ludmillenstift, Germany

We will walk through a case study demonstrating how hydraulic problems can be discovered, monitored, analysed and finally solved with the Belimo Energy Valve. A too low and/or too high flow results in wrong Energy transmission and will have a huge impact on patient comfort, energy bill and maintenance cost.


This workshop is suitable for consultants, system integrators, mechanical contractors, building owners and operators, facility contractors and building automation business people as well as for professors and students from relevant universities.

Expected results:

Visitors will be informed about potential of energy savings by applying the discussed solutions.