Line up for energy efficiency

Buderus has commissioned its largest ever multi-boiler heating system in the UK at Wandsworth Town Hall. The installation features two cascade systems, each comprising 12 Buderus GB162 100kW output boilers.

Cascade heating in the non-domestic sector is becoming increasingly popular and this new Buderus system was designed by Wandsworth Council Design Services working closely with the Buderus technical team and installation contractors T Brown of Surrey.  The result is a highly efficient heating and hot water system servicing the needs of the 1930s municipal building and the later seven storey extension council office block.

With the existing boilers having been in use for 20 years, the council took the decision to replace them with a new, state-of-the-art system which would deliver considerable savings in fuel costs, reduce system maintenance, and minimise emission levels.

The heating and hot water system had to be flexible to provide energy efficient operation whilst meeting the varied pattern of usage.  In addition the building has a large thermal inertia, so once heated only requires relatively low boiler outputs to maintain the required temperature levels.

Until the recent development and availability of multi-boiler cascade systems, the only previous option would have been for a virtual like-for-like replacement, albeit with more modern appliances.  However the cascade option particularly suited the usage pattern as each 12-boiler cascade can provide heat output which modulates according to the demands of the system down to just 19kW, but has a maximum output of 1,200kW which is more than sufficient to cope with the coldest days and the highest hot water call off.

David Higgins of Wandsworth Design Service says: “We opted for a Buderus system because they were able to offer the most complete solution, providing all the necessary components from a single source.”

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