HVAC
benefits of the TABS by limiting the amount of heat loss and solar gain through the building fabric.
For the Dudley Advance II installation, thermal modelling data was used to estimate the heating and cooling requirements for the 3,500m² building and it was calculated that two domestic boilers (with a third for standby) would be sufficient for both the TABS system and the domestic hot water. Moreover, the building requires no air conditioning or mechanical ventilation but relies solely on the TABS system, window opening linked to a BMS (building management system) and air entering the building through the BMS-controlled roof-top clerestory.
Dudley Advance II is a steel frame building with metal decks for the concrete floors and these have been painted white to provide a reflective surface for the TABS system, maximising its thermal performance. Embedding the heating and cooling in the floors and ceilings in this way not only removes the need for any wall-mounted radiators or air conditioning and air handling plant but also allowed the building’s interiors to be designed without ceiling voids or raised access floors. As a result, all remaining building services have been installed below the metal ribbed deck and are fully visible from within the building, once again
providing an opportunity for students to learn from their surroundings.
The Uponor TABS system has been divided into zones on each of the building’s five storeys to enable heating and cooling to be adjusted according to the purpose of the location and occupancy rates. Weather stations positioned externally will collect weather data and this will be used to automate temperature control through the TABS system via actuators. The thermally-efficient building envelope will minimise both heat loss and solar gain, so that the water in the TABS system will only need to be adjusted by four or five degrees in order to deliver a comfortable temperature all year round.
Fully Tested Dudley Advance II has been fully operational since its first intake of students in September, following full testing of the TABS system to full heating and cooling capacity – way beyond its normal operating requirements.
Steve added: “This is the first time we have specified a building with a TABS system, but the cost, operational and student welfare benefits it offers mean it’s unlikely to be the last.”
www.uponor.co.uk
www.tomorrowsfm.com
TOMORROW’S FM | 33
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