QuietflowDCV system has improved efficiency

Edited by the Engineeringtalk editorial team Aug 3, 2009

Elta Fans is to launch its QuietflowDCV (demand control ventilation) system at the Heating and Ventilation Exhibition at the NEC in Birmingham.

QuietflowDCV allows the efficient and effective implementation of variable ventilation solutions to variable occupancy spaces within a single building in order to save energy and money.

In the QuietflowDCV system, Elta Fans has combined energy-efficient fan and impeller units with the ability to use Elta's DCV control methodology.

The system can suit any application where there is a variable occupancy space to be ventilated.

As occupants move about the building in large and small groups throughout the course of the day, the way in which they use the space therein can vary.

Their activities and the way in which they congregate can give rise to many different situations - thereby resulting in many varied ventilation requirements.

The system is integrated fully into the building's management system - either as a manually controlled system or as an intelligent system using a range of sensors and enabling devices.

The latter uses different forms of sensor to provide an array of different detection modules to detect the level of spatial contaminant (for example, people, temperature, CO2, humidity) within the building.

The sensors provide an almost infinite amount of variation to the ventilation system so that it matches the level of occupancy within the space.

The intelligent system will also interface with other enabling systems (infrared PRI, building automation systems) so that the end user can be alerted to changes in performance levels, energy levels, maintenance requirements and so on.

Efficiency of the fans has been greatly improved, according to the company.

Some models are fitted with a backward-curved impeller to provide around 87 per cent efficiency.

Also, a self-extinguishing acoustic lining provides an enhanced noise rating when compared with similar models.

For cleaning and maintenance, access is simpler via easy-to-remove top panels and the control systems also incorporates SELV (safety extra low voltage facility) for the greater protection of users and installers alike.

Generally all QuietflowDCV units have been designed and developed to minimise their height, so that they can fit easily into ceiling spaces and voids.

Multiple choice of fan allows for a range of airflows to ensure a good choice for the customer.

They are suited to either new-build or refurbishment projects where space is at a premium and energy conservation is a priority.

QuietflowDCV units have been fully tested in compliance with ISO 5801:1997 (airside performance) and BS848 Part2: 1985 (sound performance) in order to provide accurate and reliable test data.

All QuietflowDCV products (indeed, all Elta products) are designed and manufactured in accordance with BS EN ISO9001: 2000 to strict design and manufacturing standards.

The QuietflowDCV is the first product in the range of in-line box fan units, with the twin-fan unit following later in 2009.