HVAC & Extractor Systems

The factory HVAC system ensures safe & healthy factory conditions are maintained with respect to air quality, ideally using fresh air from outdoors. The HVAC systems are designed to localise & extract waste matter, toxic fumes & smoke from specific points in a production process such that the rest of the factory remains safe & smoke free. The extracted by- product is then transported via the duct system to a designated point for further bio- degrading/disposal.

The HVAC system also plays a vital role in the factory 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.

What You Need To Know:

Avoid a complex duct system with limited access. Ideally the entire system should be exposed but networked outside main work areas

The HVAC system must deploy the correct drive to suit a specific job requirement. In order for this to happening on an on-going basis, operation settings must be flexible and programmable according to specific machining requirements

Match capacity to the required performance. Deploy lower-cost variable-speed drives in smaller sized systems

There are a number of advanced management and monitoring systems which can be retrofit to existing HVAC systems

The system must have the ability to deploy only in areas where required and switched off in areas of the factory network where extraction not required

The factory HVAC system is usually designed within the overall fire prevention plan. It is vitally important that the system is designed to provide a smoke free escape by accurately maintaining the air pressure along the designated escape routes

A multidirectional system with forward & reverse speed ensures flexibility & allows adjustments for future production line planning & fire control requirements

High-efficiency motors are an option that would reduce fan and pump power in all applications