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Heat recovery technology
Airflow Developments has launched an addition to the Duplexvent MVHR range, which uses high performance heat recovery technology to provide efficiency and protection against indoor air contaminants. Available in DV250, 300 and 400 models, the Entro range consists of side-entry supply and extract ventilation units, suitable for use in small, medium and large homes up to 220m2. The company says this mechanical ventilation with a heat recovery solution operates with minimal noise while achieving over 90% efficiency with air capacity of up to 385m3/hr at 100Pa. The Entro range is available with a choice of two control panels.
Airflow Developments

Central air-handling units
Fan manufacturer Ziehl-Abegg has released a new range of central air-handling units – the ZAbluefin blades. The radial fans vary in size, starting at 710mm, and benefit from knowledge gained in the field of bionics. Less weight protects the bearings in the motor, and there are no gaps into which dirt or condensation can penetrate, making the new product more stable.
Ziehl-Abegg

Guide to floor plenum airtightness
BSRIA has published a guide that addresses issues with floor plenum and recommends criteria for air leakage from floor plenums. It is important that air supplied to the floor plenum is discharged through floor-mounted diffusers or grilles rather than through joints in the raised access floor or between the raised access floor and the walls, and the guide suggests the worst acceptable criteria for plenum leakage. The Floor Plenum Airtightness Guide is available to download from the company website and as a hard copy.
BSRIA

Psychrometric diagram viewer
Daikin has launched a new psychrometric diagram viewer, which provides the means to plot moisture levels in building projects. The software settings of the new tool can be adjusted to accept a wide range of variables. Data obtained is reviewed against a series of parameters and presented as charts. The software promotes precise capture of the properties of moist air in changing conditions and the resultant effects on the building environment. The psychrometric data viewer offers the ability to plot and adjust points on the graph with the click of a mouse and to zoom in to see relevant areas of the chart in more detail.
Daikin

PVCu soil and MUPVC waste pipes
Soil and waste pipes from Marley Plumbing & Drainage have been installed on a scheme to provide 497 high-rise homes in Salford. The PVCu soil and MUPVC waste products were specified because the company offered a package that included all the products the project needed. Marley’s soil and waste products are certified to British and European standards including BS EN 4514, BS EN 1329 and BS EN 1566.
Marley Plumbing & Drainag

Fire alarm control panel technology
A new life safety system based around Kentec’s Syncro fire alarm control panel technology has been installed at a new biology laboratory facility, part of the Babraham Research Campus in Cambridge. The open protocol system was designed around a six-loop Kentec Syncro AS analogue addressable fire control panel incorporating approximately 400 addressable devices and 250 loop driven sounders, to provide a complete building system solution with flexible cause and effect capabilities.
Kentec Electronics