Advanced Ergonomic Technologies underfloor air conditioning air systems access flooring news 120406

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AET Control brings Energy Metering function to Hiross Flexible Space Air Conditioning System

Advanced Ergonomic Technologies (AET) has introduced an energy metering capability to the Liebert Hiross control system available as part of the Hiross underfloor air conditioning provided in its Flexible Space Concept. The system can thus provide an accurate, easily reconfigurable and cost-effective alternative to the expensive building control systems typically used for this purpose in multi-tenanted commercial buildings.

The Liebert Hiross Hirovisor is an intelligent service interface and web-server for use with the Hiross Flexible Space System. By interfacing directly with the TCP/IP LAN or WAN network through an ethernet connection, it brings building or facilities managers remote access to the system to monitor energy consumption and usage patterns by zone or occupier. This ensures that tenants can be billed accurately, irrespective of any changes in occupancy, without the need for a stand-alone building management system or any requirement for costly re-engineering or re-programming of the control system.

Ideally suited to applications where more than one point of access is required, the Hirovisor system is also a simple to use solution where occupants demand better local control of their environment. Users can now take a degree of control over their personal air terminal (fantile unit) operation from the comfort of their desk without having to request minor system changes via the facilities or system manager. Any number of fan tile units can be controlled in this way by any number of different users. With the latest demands of Part L of the Building Regulations, monitoring and control are of increasing importance and the Hirovisor system permits an easy, user friendly platform from which to manage the total environment. Best suited to large installations where monitoring and remote adjustment is essential, the system may equally well be applied to a single tenancy within a large building or just on its own for ease of operation.

The Hirovisor is quick and easy to set up. When loaded onto a PC, the software automatically generates a site-specific picture of the Flexible Space System in it’s control. Simultaneous access can be achieved from multiple PC’s with different levels of service and security levels set up to suit the requirements of high priority and low priority users.

AET’s Flexible Space Concept, incorporating Hiross underfloor air conditioning, uses the whole void under a raised access floor as a “duct” for air distribution. The area to be conditioned is divided into “zones” of typically between 100 – 300m 2 and each zone is isolated from the others to create airtight boxes. Walls or demountable partitions separate the zones above the raised access floor with either mineral fibre fire barriers or solid walls beneath. Each zone’s floor void, or plenum, is divided into two sections by a silicone covered barrier material; creating a supply air zone and a return air zone, very roughly splitting the plenum into two halves. Depending on the users requirements, either cooled or warmed air is driven into the supply air zone by a Conditioned Air Module (CAM).

This air is then drawn up into the occupied space by fan-assisted terminal units (FTU). The FTU are recessed into the floor, plugged into an underfloor power source and connected by Cat5 data cabling for intelligent control. After thorough mixing in the office space, the used air travels back down into the plenum through grilles over the return air zone and, along with an injection of fresh air, passed through to the CAM. Here, it is filtered, has the humidity and temperature adjusted according to settings made both at the CAM and FTUs and is once again recirculated into the supply air channel.

Since the FTUs are not restricted by duct or pipe connections, they are easily interchanged with nearby floor panels, allowing swift reconfiguration in the event of any discomfort or office changes. Alterations are therefore very straightforward, keeping costs and disruption for the users at a minimum.

With well over 1½ million sq m of commercial building space now air conditioned with its Flexible Space System, AET is the clear market leader in underfloor air conditioning. This is a low energy concept popular amongst consultants keen to comply with the carbon neutral requirements of the forthcoming Part L of the Building Regulations.
Image Caption: AET’s Liebert Hiross Hirovisor

As well as Hiross Flexible Space underfloor air conditioning, AET’s Flexible Space Concept incorporates the Movinord Modular Partition System, Nesite raised access floors, a Venitzia range of carpet tiles and Electropatent power voice and data cabling.

Email: sales@flexiblespace.com