Localise & extract unwanted air from specific points in the building
The building HVAC system ensures safe and healthy conditions are maintained with respect to air quality, ideally using fresh air from outdoors. Building inhabitants will not feel comfortable if exposed to extreme temperatures, smoke, odours or toxic air. The building HVAC systems are designed to localize and extract unwanted air from specific points in the building layout so that the rest of the building remains fee of air pollutants. The extracted by-product is then transported via the duct system to a designated point for further biodegrading or release. The HVAC system also plays a vital role in the building fire control system, ventilation and air conditioning system.
The energy monitoring must not only take air handling and pumping through the duct network into account but also the chiller plant energy, all fan energy (supply and exhaust), and heating hot water pump energy where applicable. Careful monitoring and tweaking of the system can reduce speed in air handling and pumping applications without compromising the required output of the system.
One of the most important factors in maintaining high-performance HVAC systems is to implement a strategy that continuously commissions the system. All too often, the system is run as a fixed installation at one speed from inception without performance reviews or exploring option on performance improvement and /or energy savings. The ideal situation is to have real-time measurement and verification via remote monitoring.