Fume hoods are essential pieces of equipment in modern laboratories, protecting lab technicians from toxic materials and gases. On the other hand, they also require vast quantities of energy to operate.
Traditionally a standalone CAV ducted fume cupboard will exhaust 181,440 m³ of conditioned air per week. In fact, a single unit consumes more energy than your average British household per year.
With this in mind, it's simple to understand why fume cupboard manufacturers are developing new technologies to conserve energy. Especially during times of rising inflation and creeping energy costs.
However, energy concessions could place a significant strain on user safety. The key lies in combining efficiency with security to develop a unit that still adheres to stringent EN 14175 standards while saving you money.
Here, we examine a few strategies used by manufacturers and operators to accomplish this objective.
Best Practice Procedures
A ducted fume hood's energy efficiency is greatly influenced by those who operate the cabinet. Limiting the access area to 200mm when not in use, optimising the cabinets position within the lab, and switching the unit off all make a substantial difference.
Systems With Variable Air Volume
VAV (variable air volume) reduces the volume of air extracted by the fume cupboard when the sash is closed. This simple yet effective solution operates through a strategically placed damper retrofitted inside the ductwork.
The damper regulates airflow according to your fume cupboard sash height, ensuring that a safe face velocity is maintained at all times. The higher the sash, the greater the cost. Thus, VAV systems can decrease the quantity of conditioned and makeup air needed by the HVAC system to maintain the desired environment.
So, there you have it, a safe and secure ducted fume hood solution that protects your bank account while keeping your employees safe.
Visit the Tion website to find out more about their energy efficient ducted fume hoods.
