News
passivehouse+ | Issue 17
Goodwood lives up to name with Viessmann biomass boiler Goodwood Estate in West Sussex, home to the world-famous annual Festival of Speed, has constructed a new energy centre and district heating network as a step towards selfsufficiently meeting its energy requirements from renewable sources. At the heart of the new centre is a high-tech Viessmann Pyrot biomass boiler which will be fuelled by wood from the 11,500-acre estate.
chippings, available in a range of six models with outputs from 80 to 540 kW and with boiler efficiency greater than 90%. The Pyrot’s patent-protected rotating combustion chamber optimises utilisation of the wood gases with minimum dust emissions at all power levels and its horizontal heat exchanger can be pneumatically cleaned, significantly reducing maintenance requirements.
Goodwood House and Estate have been home to the Earl of March’s family for more than 300 years. “With this,” Lord March has observed, “comes great responsibility to protect, maintain and enhance the character, setting and landscape for the enjoyment of future generations without compromising their needs.” Goodwood’s ultimate goal is to supply the whole estate with renewable energy.
The energy centre has been built with a hydraulic roof which slides back to allow the tipping of woodchip into a 100 cubic metre fuel store. A rotary auger transfers the woodchip into a transverse auger which delivers fuel to the boiler’s moving grate. Heat is then transferred for storage to two Viessmann Vitocell 300 buffer vessels and four Viessmann Vitocell 300 domestic hot water cylinders. The 220 kW Pyrot biomass boiler is supplemented on occasions of peak demand by an LPG-fuelled 187 kW Viessmann Vitocrossal 300 boiler.
It was this commitment to sustainability which led to the creation of an entirely new, sustainable energy centre when it was time to update the heating and hot water supply to Hound Lodge, an exclusive 10-bedroom country retreat in the estate’s grounds. With an abundant on-site fuel source, a woodfuelled boiler was a logical choice and a Viessmann Pyrot was specified. The Pyrot is a fully automatic firing boiler, for wood pellets or
(Below) A Viessmann Pyrot boiler, installed at Goodwood Estate in West Sussex
Darren McMahon, marketing director at Viessmann, commented: “Lord March and his team are internationally famous for the excellence of their sporting events and at Viessmann we’re proud that our products meet the Lord’s exacting standards.”
Airflow launches new MVHR system
Airflow Developments has launched the latest addition to its successful Duplexvent MVHR range. The Duplexvent Entro utilises high performance heat recovery technology to provide optimum efficiency and protection against harmful indoor air contaminants. Available in DV250, 300 and 400 models, Airflow said its latest product innovation
offers a simple installation method as well as easy-to-use controls, making it an ideal option for domestic properties. The Entro range consists of side entry supply and extract ventilation units, suitable for use in small, medium and large dwellings up to 220 square metres. Airflow said the system operates with minimal noise whilst achieving over 90% efficiency, with air capacity of up to 385m3/hr at 100 Pa. The Entro range has been independently tested to comply with SAP Appendix Q criteria, enabling inclusion in an architect’s SAP calculations for the specification of a high performance heat recovery ventilation solution. Each Entro unit contains a plastic heat exchanger, to transfer warmth from the outgoing waste airstream into the incoming fresh air, while ensuring that the incoming and outgoing airstreams do not mix at any point in the exchange. All Entro units are also fitted with an automatic 100% summer bypass function to isolate the heat exchanger — ensuring no warm air is passed back into the dwelling — to provide effective cooling in the summer season. The Entro range is available with a choice
of two control panels. The basic control panel is a manual switch which is available as standard. This control allows the user to adjust the speeds of the fans, as well as enable or disable the unit’s heaters, in addition to automatic functions including the air flow boost and frost protection. Customers also have the option to upgrade to a touch screen panel for added functionality including weekly programming and maintenance reminders, as well as indoor temperature display and controls via the easy-to-use, touch screen interface. Rob Dennis, product marketing executive at Airflow Developments, said: “We are delighted to introduce the Duplexvent Entro range to the market to provide powerful, efficient, affordable ventilation for domestic properties. The performance benefits, practical approach to installation and easy to use controls mean this is an ideal ventilation solution to protect homes against harmful indoor air contaminants all year round.” For more information on Airflow Developments, visit www.airflow.com. (Above left) Duplexvent Entro, Airflow Developments latest addition to its MVHR range
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