Dyffryn Mymbyr puts its trust in biomass

After numerous successful installations of biomass systems in properties owned by the National Trust, leading supplier of sustainable heating systems Windhager UK has once again been specified to provide an energy efficient heating system at Dyffryn Mymbyr in Snowdonia following the restoration of the estate’s 19th century farmhouse and cottage.

Made famous by Thomas Firbank, whose account of his life at the 3,000 acre hill farm in the 1930s ‘I Bought a Mountain’  became a best-seller, the aim of the project was to restore both houses to a high standard and re-open them as holiday cottages, giving people an opportunity to stay at the historic farm and to help raise funds for the Trust’s work in Snowdonia.

The BioWIN 52kW cascade system installed at the estate by Ian Ryan of Mon Heating in conjunction with Windhager UK consists of two separate 26kW boilers operating together in cascade to deal with the fluctuating heating requirements for the properties as efficiently as possible. Maintenance work can be carried out easily without having to shut down the full heating system. The cascade system installed boasts an impressive output range between 7.5kW up to 52kW.

Keith Jones, Environmental Practices Advisor at the National Trust has been impressed with the results and cost savings after installing the system as he comments, “The system can modulate to meet all the demands of the site without having to store large volumes of water resulting in heat loss. The two highly efficient boilers can together easily meet the severe winter heating needs for the site. In summer when only a fraction of the total power is needed, the system can alternate between single boilers to provide only hot water without heating. The other boiler will then remain on standby, saving on operational costs.”

The project has been a great success for the National Trust, as Keith Jones goes on to explain, “ The restoration of such an iconic farmhouse has been a huge achievement for the Trust’s local team. The project has received praise for the way it has used modern technology to reduce its environmental footprint.”

The boilers are served by wood pellets transported by lorry from Ruthin and blown into the 9.6 tonne bulk capacity hopper. The pellets are then sucked from the large storage hopper into the individual boiler hoppers and then fed when required into the burner bowl. The system is fully automatic in operation with little maintenance required. The system and associated plant are located in the former garage adjacent to the rear of the cottage. The wood pellet system has only 1/13th of the carbon emissions of a standard oil heating system and all wood pellets used for the system meet FSC/ UKAS sustainability credentials and a large hopper has been installed to minimise the transportation of fuel to the site.

Although the National Trust has over 60 biomass systems on its estates, the Windhager two boiler cascade district heating system is the first of its type for the Trust. Windhager systems have also been installed in several farmhouses and offices owned by the National Trust nationwide in projects such as the installation of a 50kw Windhager LogWIN boiler to heat the tearoom, chalet pavilion and educational facilities on site at Cardingmill Valley, saving nearly £4,500 in operational costs per year. Impressed with the results and cost savings, project managers at the site have now also specified a VestoWIN central heating cooker from Windhager, a reliable and environmentally friendly traditional cooker with all the advantages of a wood burning central heating system.

There are currently no comments for this article.

Login to comment. slider