Danfoss AB-QM™ was the first of its kind control valve for HVAC heating and cooling applications. It is a control valve with automatic flow limitation and built-in differential pressure control functioning over the control valve. The result of this concept is a high performing control valve with a – still - unique valve authority of 100%. The design flow can easily be set to the needed amount by using a 20-100% scale. Simply setting the design flow replaces traditional commissioning processes, gives a much more accurate control and avoids Cv calculations for system designers.
When equipped with a complimentary Danfoss actuator, PICV's increase energy efficiency and improve the indoor climate. The AB-QM™ is mainly used for air handling units, climate ceilings, variable air volume boxes, fan-coil units and other terminal units in HVAC heating and cooling systems.
Features and benefits
Easy setting and sizing
Selecting the right AB-QM is much less complicated than sizing and selecting conventional control valves. Once the design flow is determined the matching AB-QM can be selected, no additional Cv and authority calculations are required.
Having a 100% valve authority increases the control quality and precision, also at low flow requirements. This creates a better comfort in the building, as well as increasing the energy savings.
By providing the right flow at the right time, the AB-QM optimizes chiller and boiler efficiency and reduces pumping costs. In addition, the actuators need to make much less movements, increasing the lifetime value and lowering the Total Cost of Ownership.
Hydronic balancing and control with Danfoss AB-QM
Brief explanation of the principle of automatic balancing & control of fan coil units in office buildings. Including the benefits of using Danfoss' AB-QM valve compared to traditional balancing valves.
High-end climate solutions in Waldorf Astoria by Hilton, Amsterdam, the Netherlands
Application: Hydronic balancing and control for radiator heating and fan coil cooling
Challenge: Establish top level comfort and minimum energy consumption for heating and cooling
Solution: Fan-coil units for cooling; 8 heating risers and radiators equipped with Danfoss products.
Energy comfort in Prime Tower, Zurich, Switzerland
The Prime Tower in Zurich is a building of many records. With its 126 meters it is the tallest building in Switzerland with 36 floors and 40,000 square meters accommodating mostly offices. And with its more than 6,000 AB-QM valves it is also one of the biggest heating and cooling installations ever designed and installed by Danfoss.
SAMBA bank head office cuts energy use by 25% with AB-QM, Riyadh, UAE
At the heart of the new King Abdullah Financial District in Riyadh stands the impressive SAMBA head office. The 40-story building represents a landmark in sustainable architecture and engineering and forms an attractive work space for the 800 people working in the SAMBA Financial Group head office.
Rochester Institute of Technology puts PICVs to the Test
In hydronic HVAC systems made up of traditional balancing and control valves, system pressure is affected every time a valve changes its position. When the system pressure changes, the flow through all of the valves reacts and causes the amount of heat transfer through each device to also change.
Energy savings and optimal passenger comfort for a cruise ship
Air-conditioning for passenger comfort is second to propulsion for using energy on a cruise ship and can account for 30-40% of fuel consumption which could be 50,000 tonnes of Bunker oil for a large cruise ship each year. The AB-QM, Pressure Independent Balancing and Control Valve, (PIBCV), can save 25-30% of HVAC energy costs compared to conventional distribution designs, equating to about US$1 million each year at today’s oil prices for a large modern cruise ship.
|Type||Name||Language||Valid for||Updated||Download||File type|
|Operating guide - AQ||AB-QM (½"-2")||English||United States||01 Nov, 2018||2.8 MB|
|Data sheet - AI||AB-QM Valve Datasheet||English||United States||30 Jan, 2019||2.7 MB|
|Catalog - AF||AB-QM™ Quick Select Guide||English||United States||30 Jan, 2019||7.3 MB|