Fume hoods are essential equipment in modern laboratories, protecting lab technicians from toxic materials and gases. On the other hand, they also require large amounts of energy to operate.
Traditionally, a self-contained CAV ducted hood exhausts 181,440 m³ of conditioned air per week. In fact, a single unit consumes more energy than your average UK household per year.
With this in mind, it is easy to understand why fume cupboard manufacturers are developing new technologies to save energy. Especially in times of rising inflation and soaring energy prices.
However, energy concessions could put a strain on user security. The key is in combining efficiency and safety to develop a unit that still meets the strict EN 14175 standards while saving you money.
Here we look at some strategies used by manufacturers and operators to achieve this goal.
Good practice procedures
The energy efficiency of a ducted hood is greatly influenced by those who operate the cabinet. Limiting the access area to 200mm when not in use, optimizing the position of cabinets in the lab and turning off the device all make a substantial difference.
Variable air volume systems
VAV (Variable Air Volume) reduces the volume of air drawn in by the fume cupboard when the sash is closed. This simple yet effective solution works through a strategically placed damper installed inside the ductwork.
The damper regulates the airflow according to the height of your fume cupboard frame, ensuring that a safe face velocity is maintained at all times. The higher the belt, the higher the cost. Thus, VAV systems can decrease the amount of conditioned and make-up air needed by the HVAC system to maintain the desired environment.
So there you have it, a safe and secure ducted hood solution that protects your bank account while keeping your employees safe.
Visit the Tion website to learn more about their energy efficient extractor hoods.