On May 4, 2015 Marc Thuillard, Head of Research Belimo was a panelist for the U.S. Department of Energy’s (DOE) workshop: High-Density Urban Environments and Buildings of the Future. The objective of this workshop was to develop a vision for future buildings based on collective views of thought leaders. They explored technologies that could revolutionize the built environment across energy, water, environment, resilient design, health, security, and productivity.
Marc stated “We live in exciting times.” With the current evolution of electronics, a small microprocessor integrated into an actuator, has the capability that only previously was available in a computer. He stated that currently, lifelong stability of building controls is difficult to achieve. In the future building systems will be self-learning and more demand control oriented. There will be more virtual sensors, such as information from wearable devices and smart phones, which will provide information through the internet of things to dynamically control systems. He stated systems will also be self-healing and make adjustments when there are temporary or permanent changes, in order to operate at peak efficiency. He reminded us clean air is a resource we must be vigilant to maintain. That rapid expansion in parts of the world is resulting in bad air quality.
The Buildings of the Future Scoping Study will develop a vision for what U.S. mainstream commercial and residential buildings could become in 100 years. To learn more download the Building of the Future Discussion Guide.
For more information on DOE’s Buildings of the Future program download NYC full presentation or visit the Project website.
Marc Thuillard is Head of Research for Belimo a manufacturer of energy efficient products such as Energy Valve and the ZIP Economizer. Belimo is a world leader in the design and manufacture of damper actuators and control valves used in commercial HVAC systems. Known for its direct-coupled actuator and innovations in pressure independent control valve technology, Belimo has solutions to maintain an efficient building environment. For 40 years, Belimo has provided innovations in Comfort, Energy Efficiency and Safety Solutions to customers throughout the world.
Belimo Americas, the leading producer of electronic valves and air damper actuators, announces enhancements to SelectPro™, the company’s unique and powerful sizing and selection software. SelectPro is a quick and simple tool for accurately sizing and selecting valves, actuators, and replacement solutions. With the recent enhancements SelectPro now offers:
- Updated User Interface – Easy & Intuitive Navigation
- Quick Quote Module – Create a schedule or quote in no time
- Additional Media – Now offering Images, Installation Instructions and 3D drawings
- Media Download – Save a ZIP ﬁle of your entire schedule’s media
- Manual Selection – Now offered in the Damper & Retrofit Modules
“The goal is to provide a tool that the customer could navigate with ease and be able to seamlessly move from selection to schedule to ordering”, states Danielle Breece, Product Specialist for Belimo’s Sales Tools. “I believe the Quick Quote Module will be a great asset to every user’s daily business.”
To download or learn more, visit the Belimo website at www.belimo.us. You can also e-mail firstname.lastname@example.org or contact Customer Service 1-800-543-9038.
is pleased to announce the release of their new ZoneTight zone valves which are designed for maximum efﬁciency in tight spaces. The Belimo’s ZoneTight zone valve product range sets new design and performance standards for both pressure dependent and pressure independent zoning applications.
“The ZoneTight zone valves are unlike any other zone valve on the market today”, states Nigel Gallimore, Product Manager. “The PIQCV not only provides reliable, pressure independent control—it offers several advantages to those who design, install, and rely on flow control equipment.” Learn more online at www.belimo.us.
- Belimo’s zero leakage ball valve design eliminates energy losses and is resistant to clogging.
- Low power consumption - up to 95% less than conventional zone valves.
- Field adjustable flow to meet your design requirements.
- Smallest pressure independent characterized ball valve in the market.
- 5-year warranty.
Belimo Americas is pleased to announce that it has officially made the move to its brand new, energy-efficient headquarters in Danbury, Connecticut.
Located on 34 acres of hillside landscape near the city’s western border, the 200,000 square foot facility is more than twice the size of the company’s previous office and production site and will serve as a showcase for all of its valued customers.
Built to give visitors a firsthand experience of how Belimo technologies can improve controllability, comfort, and energy efficiency in structures, the new facility features a number of the company’s very own proprietary products and is on track to achieve LEED® Gold Certification from the U.S. Green Building Council.
In addition to expanded manufacturing capabilities, which will help ensure the production of high quality products with industry best lead times, the building also includes a state-of-the-art HVAC control valve design and testing laboratory, a hands-on training facility for Belimo University, improved ergonomic design to better accommodate employees from Ability Beyond, and a full-range of interactive product demonstrations for its customers.
All together, the building includes 126,000 square feet of manufacturing space, with the option of adding another 100,000 square feet if the need arises. It can also accommodate another 23,000 square feet of office space in the event that future operations require expansion.
One of the most interesting design aspects of the new facility is its layout, which features cloud-based ceilings that allow visitors to view the company’s damper actuators and control valves at work. In the boiler room - which other facilities usually close off from the public - Belimo has also installed color-coded pipes to help customers see each system in operation.
When asked about the decision to implement the unique ceiling design, Belimo’s Vice President of Finance and Administration, John Coppola, said:
“The building layout allows for tours of the facility so that customers can see our products in action. The tour is called: Belimo – Experience Efficiency. It’s a fabulous work environment; one where not only everyone can enjoy their day at work, but where we can teach our employees, sales managers, and customers the important role that our products have in sustainable buildings.”
Among the many Belimo products and technologies used to improve the energy efficiency of the building, some of the most notable include:
- 44 Energy Valves that allow for precise energy measurement, control and optimization of chilled and hot water flow.
- 94 6-Way Valves for changeover control of chilled beams and fan coil units, which helps reduce the overall number of valves, actuators, and integration points required to achieve the same result.
- 188 Pressure Independent Characterized Control Valves for automatic balancing of chilled and hot water flow to each chilled beam branch.
- More than 160 Active Chilled Beams in combination with Belimo air flow balancing actuators to target the delivery of outdoor air efficiently.
- A roof top unit for delivering conditioned air to the retrofit actuator machine shop, RMA, and AB area. The purpose of the unit is to demonstrate the effectiveness of the ZIP Economizer.
While the facility’s unique design will put on display Belimo’s prowess in the HVAC industry, other energy saving strategies and technologies will also help pave the way to its LEED® Gold Certification. Some of these strategies include water efficiency landscaping with bioswales to prevent water runoff and erosion, sub-metering of mechanical room devices so that energy consumption of systems can be closely monitored and recorded, occupancy and brightness sensors for efficient use of LED-lighting, evaporative coolers, dual flush toilets, and onsite waste management and recycling.
"Being an energy-solutions provider, it was important to us that the building reflects who we are," added Coppola. "We aren't just providing energy solution products; we are living it every day. We live who we are."
Visit the Belimo building photo gallery online or download the facilty guide book.
Belimo Americas is pleased to announce the release of the new ZIP Packs. A packaged solution designed for a speciﬁc economizing strategy; providing what you need to retroﬁt current systems - the ZIP Economizer Base, sensors, Energy Module for Demand Control Ventilation (DCV) integration, and a spring return actuator, and retrofit brackets backed with 5 year warranty. Each retroﬁt kit meets utility incentive programs and is conveniently packaged in one box and can be ordered with a single part number.
“The ZIP Packs were designed as a quick drop in economizer replacement solution, saving you time and energy,” states Vanessa Castro Product Specialist, OEM/Custom Products & Economizer Applications. “Companies can get their systems back on track and meet the latest energy standards and building IAQ requirements.”
Learn more online at www.belimo.us.
When control loops are not properly tuned, actuators may fail prematurely, and the system can provide poor temperature or flow control.
Three conditions are usually caused by poor control loop tuning: oscillation, hunting, and dithering. Oscillation is constant changes in position. Hunting is wide, constant swings in control signal. Dithering is small, sometimes imperceptible changes in signal. For floating actuators, the time and frequency of the pulse, rather than signal voltage, is the control output but the result is the same.
Oscillating control loops caused by being over sensitive can result in more than a million actuator movements in just a few years and can cause actuator failures. In sluggish control loops, actuator movement does not occur or is too small to affect flow, resulting in extreme system overshoot and comfort problems.
There is an easy trade-off between tight control and a reasonable number, and size, of actuator movements. Space temperature changes occur slowly in a stable process. When a room fills with people, it takes about 5 minutes for a 1 degree temperature change to occur. It may take another 5 minutes for a wall sensor to register the change. Fast movements of the actuator are not necessary.
Mixed air control is also a very stable process. Rapid changes in outdoor air temperature or average return air temperatures are rare. On the other hand, discharge air temperature control with a hot water or chilled water valve is a fast process because the sensor is close to the coil. A bare averaging thermistor sensor may respond in 30 seconds to a 1-degree change. Encapsulated sensors may take 2 minutes.
During start-up of a system, more actuator movements may be necessary to find the correct operating condition, but the space is not occupied and there is time to stabilize the system without fast actuator responses. In an ideal control loop, each actuator movement is productive.
Proportional constants (and also integral and derivative) should be set so that continuous oscillation of actuators does not occur. Actuator movement should not occur before the effects of previous movements have had time to affect the sensor. This may be 10 minutes for a space sensor or 1 minute for an air sensor. Movement of damper or valve actuator when air temperature is within .5 degrees of set point, or when mixed-air is within 1 degree of set point usually will yield stable control; attempts to achieve more precise control may result in unstable control and excessive actuator movement.
When 3-point floating control is used, the total run-time of the actuator should be entered into the program logic. When the actuator is at either the fully open or fully closed position, continual pulsing of actuator against end-stops (end-stop dithering) should not occur. The actuator should either stop and hold or drive continuously against the end-stop.
Each VAV box and actuator control loop should be individually tuned. Where high turbulence in the sensor flow control loop is causing dithering (rapid oscillation) of the actuator control loop, the sensor loop should be corrected mechanically or with software averaging. Where the control loop is not fully adjustable, it may be necessary to find a method unique to the individual controller.
If an actuator is “chasing” a process which occurs faster than the actuator movements are able to correct, as may occur in the situation described above, the result will be many more actuator movements than are necessary to affect flow. The average flow should be adjusted, but turbulence is normal and should be ignored.
- Hunting: wide oscillations
- Dithering: small, unproductive movements of the actuator
- End-Stop Dithering: the actuator or damper is at the end of its rotation, but the control loop continues to pulse.
- Reduce the proportional or integral gain.
- Use a deadband.
- Add time delay.
- Reset constants.
- Shut down control when at end-stops.
- Do not control process faster than components response.
The ZTH US is a simple diagnostics and testing tool used with Belimo actuators offering a series of powerful diagnostic functionalities: function test, position preset, test setpoint /actual value, test damper and valve position and verify flow. The ZTH tool eases system maintenance and achieves maximum operational reliability.
The ZTH directly connects to the Belimo Multi-Function Technology (MFT) series actuator offers you access to the MFT parameters. MFT is a programmable actuator that allows you to create custom solutions for individual applications. If you need a particular control or feedback signal, or need to change running speeds, MFT is the answer. It comes standard as a 2 to 10 VDC proportional control but can be reprogrammed on-site. You can modify voltage control, time proportional control, floating point, on/off and feedback signals too. In addition, MFT makes it easy to set parameters for running time, mechanical working range, address, status and diagnostics.
The ZTH also allows users to connect the actuator to their personal computer when using the Belimo PC-Tool software. Connecting to the PC-Tool software enables you to customize the actuator, conduct functional tests and provides the ability to chart trends and operations.
In a Water Source Heat Pump (WSHP) application, water distribution is accomplished either of two ways: variable speed pumping or constant speed pumping. The decision to use one over the other is usually made based on who has the most convincing argument. Because of the simplistic nature of a heat pump, the basic function of valves is to allow a predetermined volume of water to enter each unit through either a water-to-refrigerant coil, water-to-air coil, or a water-to-water coil. These valves are not required to control the amount of flow as in a traditional HVAC hydronic system. Instead, they are on/off controlled to allow full design flow when the WSHP starts.
What are the benefits?
A Pressure Independent Characterized Control Valve (PICCV) dynamically balances a system by responding to changes in differential pressure. The PICCV regulator modulates in response to differential pressures in the system to maintain a constant differential pressure across the ball of the valve. The PICCV will maintain a constant flow at part load and during morning start-up when all loops become critical. With the PICCV, each terminal gets the required flow, no overflow or underflow at this critical time. The PICCV allows a mechanic to easily commission additional circuits after the initial system is up and running, again thanks to dynamic balancing capability. The PICCV is available in flow rates from .5 to 100 GPM. Choosing the right PICCV is as easy as determining the appropriate flow for your heat pump and then choosing the valve that satisf es the flow requirement.
How does it work?
The PICCV is ideally suited to save pumping cost associated with water source heat pumps. The PICCV with On/Off control actuator is used to isolate the zone coil from the main hydronic circuit when the space is not calling for heating or cooling. Hydronic friction is reduced and when the system pump is controlled with a VFD, the flow is matched to the load of the building. This combination of PICCV and VFD saves pumping energy 90% of the time when the building load is less than full. The PICCV is available with integral -S travel switch models. The switch is wired in series with the compressor enable circuitry to assure water is f owing through the coil before the compressor starts.
Learn more, down pressure independent valves technical documentation.
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In this 30 minute webinar, you will learn how to set up an economizer to match the specific climate zone profiles, and code requirements of different regions. We will also provide an overview on the different economizing strategies, how maximize energy savings and how the ZIP Economizer eliminates the guess work of code compliance, and ensures you are automatically set up.
No registration needed. Just click on this link on September 17th at 11:00 am EST.