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All testing within the Krueger Technology Center is performed in accordance with existing industry standards. Krueger also participates in the development of industry standards, through involvement in ASHRAE and ARI. Terminal units are tested in the Technology Center in accordance with ASHRAE/ARI standard 880-94 and ANSI/ASHRAE standard 130-1996. Performance data gathered through these in-house tests is certified by a third-party test agency.
Air outlets are tested in accordance with ANSI/ASHRAE standard 70-1991.
Krueger is dedicated to educating the HVAC community on topics relating to air distribution. The Technology Center is the home of Krueger's Institute of Technology (KIT), trainings of which are held in the Center's product showcase. This gives visiting customers an opportunity to learn about air distribution from our industry experts, using a hands-on approach.
Krueger also conducts educational seminars around the country through large scale, industry-specific events and through lunchtime seminars on-site at customer locations.
Main System: The Technology Center is fully equipped with a digital control system. This system is used during customer visits to control tests and demonstrations.
The main system includes a graphical workstation, modular building controller, 2 fume hood controllers, 1 fume hood monitor, 1 room pressure transmitter, 1 room pressure monitor, 1 supply box, 1 general exhaust box, and 1 room pressure monitor.
Air Flow Test Room: The Air Flow Test Room is equipped with anemometers for profiling airflow patterns. A thermal wall controls a simulated outside air temperature, when required. The room ceiling is used to mount any type of air diffuser.
A working Sterilflo® system is also on permanent display in this room.
Reverb Room: The Reverberation Room is equipped with microphones and other sound generation and recording equipment. The sensors feed into a data-gathering computer located in the primary Air Flow Test Room.
Architectural Room: The Architectural Room is equipped with PLQ plaque style diffusers. Above the ceiling, an LMHS single-duct terminal unit controls air flowing into the room. In the corridor outside the Architectural Room, Krueger's 1900 Linear Slot Diffuser with concealed frame is installed in the ceiling.
Clean Environment Room: The Clean Environment area contains one single vertical fume hood and one combination sash fume hood with four horizontal sashes and one vertical sash. Both hoods are fully operational and have variable air volume (VAV) fume hood controllers installed on and controlling them. A VAV supply box with reheat and a general exhaust box controls the lab room.
A room pressure monitor is installed between the lab and the hallway monitoring the differential pressure of the lab in relation to the hallway. This is tied into the control network.
The workstation collects historical and alarm information from the network for later use in reporting and compliance documentation.
Fume Hood Demonstrations: This room is permanently ready to exhibit fume containment, speed of response and the ASHRAE 110 test procedure.
Theatrical smoke sent through the supply box then into the lab through the TAD (Total Air Diffuser) provides a visualization of the air flow patterns from the diffuser and the impact of diffuser placement on air flow patterns within a laboratory.
Room Level Control Demonstrations: The Lab Room Controller (LRC), which is installed in the lab, controls the supply and exhaust boxes and monitors the fume hood exhaust. The Lab Room Controller is not mounted on the supply box, but is instead mounted above the ceiling behind a clear plexiglas panel which allows visibility during demonstrations and testing.
Industrial Room: The industrial room is outfitted with a Krueger DPL drum louver.
After a building design has been developed, validation is often desirable prior to installation.
A first step toward validation may be Computational Fluid Dynamics modeling. CFDs can accurately predict airflows, particle concentrations, temperature and other parameters using proven numerical techniques.
Another method, often used in conjunction with CFD modeling, is to mock up a room physically. The mockup can serve to fine-tune a design that has already been validated using CFD. Physical mockups also provide a means of witnessing, first-hand, the operation of a laboratory.
The Technology Center is well equipped to offer custom mockups to visiting clients. Key designers and facility managers from around the globe have used the Technology Center to demonstrate and validate critical lab performance parameters. From laboratory modules to hospital operating rooms to vivaria, the Technology Center has provided clients with the tools to determine the design best suited for their applications.
One of the most important functions of the Technology Center is the role it plays in helping Krueger develop new and innovative products. Under controlled conditions, Krueger evaluates products to understand how they perform in real world applications.
Adhering to industry standards during testing, Krueger confidently generates performance data for its products that are not only reliable, but certifiable.