How this engineering solution helped Yale University save big!

Few people know that in most critical environments, such as laboratories and health care units, air flow is strictly controlled by the building's HVAC system.

In general, there are two types of air flow systems: Constant Air Volume (CAV) and Variable Air Volume (VAV); both of which have been widely applied across all buildings and industries. However, for sensitive environments, any problems caused by insufficient flow supply or exhaust would be extremely costly. Therefore, the VAV system is recognized as a standard since it provides more precise temperature and humidity control, and expends less energy than CAV systems.

According to research conducted by Phoenix Controls, if a 15 year life cycle cost comparison is made for a regular laboratory, CAV may require more than $6,000,000 for energy cost while VAV costs merely less than $4,000,000. Not only does VAV perform with utmost stability, but in the long term, it is more cost- and energy-efficient.

As an expert in laboratory and health unit air flow design, Belnor proudly offers Phoenix Controls products. The key reason why Phoenix Controls solutions are so trust-worthy and reliable is due to the specially designed and customizable venturi valve. Every single Phoenix venturi valve is calibrated to best suit a specific critical environment to ensure its perfect accuracy.

However, instead of controlling the valve by measuring the present flow rate conventionally, Phoenix chooses to rely on airflow characterization curves generated by Phoenix software, which are then downloaded to the specific valve controller at the Phoenix factory prior to shipment. Once installed, the product already knows how to operate in order to achieve any specific flow within its flow range. Metering the flow also provides the valve a shorter reaction time, therefore, allowing for better precision.

Another great advantage of Phoenix venturi valves is that all valves are pressure independent. Without this feature, there is a high possibility to produce system instability, which would eventually affect the overall performance of the air flow system. In critical environments such as laboratories and hospitals, any troublesome results could be problematic. Furthermore, the valve is corrosion resistant; as an accurate measuring device and flow control device, corrosion-resistant is mandatory. Therefore, the associated maintenance is significantly lower, and as a result, Phoenix systems do not require continual preventive maintenance.

An excellent example is Yale University. With 160 eight-foot chemical fume hoods, 74 point exhaust systems, 74 vented chemical storage cabinets, 37 equipment exhaust locations, and a once-through air system, Yale University’s Chemistry Research Building was an extreme energy consumer. With the application of Phoenix Controls solutions, 380 Phoenix valves with barely one-second response times were installed in the world-class university chemistry lab. As a result, energy use was greatly optimized. Instead of using the conventional CAV systems which were previously installed in the lab, Phoenix VAV solutions ultimately assisted Yale’s chemistry lab to be the recipient of the Labs21 “Go Beyond Award” in 2009. The building is now also LEED certified.

In conclusion, VAV systems are better than CAV systems in terms of energy cost and humidity control, and Phoenix Controls’ venturi valves are great for any flow control use in critical fields. Call Belnor today to start saving.

#YaleUniversity #engineering #HVAC #Phoenix #PhoenixControls #controls #solutions #buildings #energyefficiency #venturivalves #valves #VAV #CAV

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