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Groundwork’s Trust, Creswell

Groundwork’s Trust, Creswell

Client: Groundwork
Contractor: Groundwork
Sub-contractor: Radiant
Type of works: supply of Hanson’s Aquaflow ThermaPave energy system and Red Brindle paving.

The unique Aquaflow ThermaPave energy system was installed into the car-parking areas of the Groundwork Cresswell, Ashfield & Mansfield’s head offices in Clowne, Derbyshire with excellent results. Groundwork, as approved contractors for Hanson, installed the innovative system on its own premises. Harvested and cleaned rainwater for reuse, a proven flood prevention solution, and reduced energy costs and water bills are just some of the high-impact benefits already being gained from the environmentally friendly permeable paving and geothermal implementation.

Groundwork is an environmental regeneration charity, dedicated to supporting and sustaining vibrant, healthy and safe communities through delivering projects that tackle regeneration, environmental and educational issues. At the head offices in Clowne, the Trust had already implemented numerous green technologies within the building, including solar thermal panels, air-source heat pumps and PV cells to demonstrate the greener future as endorsed by the charity.

With the installation of the Aquaflow ThermaPave energy system, the integrated ground-source heat pump (GSHP) and rainwater harvesting solution completed the portfolio of environmentally-friendly systems and provided Groundwork with a route in tackling global climate change challenges and carbon footprint reduction.

There were a number of reasons why the system was required. The Groundwork’s trust wanted to install a GSHP and rainwater harvesting system along with the environmental benefits, but the site was also having a major problem with flooding in the sloping car park. Since the installation of the Aquaflow Thermapave energy system, there have been no issues with flooding and the underfloor heating that is sourced from the GSHP provides a reliable, comfortable and constant temperature.

The Trust’s headquarters are built around a quadrangle with a large courtyard and a sloping car park. More than 300m2 of Red Brindle Aquaflow permeable paving was laid to eradicate the flooding issues, with an impermeable liner and sub-base underneath to harvest and clean rainwater for secondary use. The sub-base also provides the ideal laying environment for the collector loops of the geothermal system. Integrated with a 6kW Disme system, the GSHP now provides full comfort heating, via a newly laid underfloor heating system, to the refurbished annex of the building at a substantially lower cost to conventional heating systems and significantly reducing the carbon emissions of the building. This forms part of a greater redevelopment of the building that will now be used as a training centre for both adults and young people in the area of construction skills, amongst other things. Groundwork provides trainees with the chance to put into practice what they learn on real working projects, such as installing the Aquaflow Thermapave energy system.

Aquaflow Thermapave energy system at this site is an excellent example of the versatility of the solution and demonstrates the remarkable results and benefits that can be gained. Up to 6kW of heating was produced by the Aquaflow paving installation. This is more than enough power to maintain a comfortable year-round temperature - all with the added benefit of a water-harvesting and storm-management solution incorporated.

Formpave partnered with renewable specialist Radiant Heating Solutions to design the complete system from the sub-base through to the underfloor heating to provide a total thermal solution. The heat pump aspect was something quite new to the team at Groundworks. To assist the installation team, Radiant were regularly on site to give technical guidance and advice. On completion, Radiant assisted the installers throughout the commissioning process.

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Established in 1989 Formpave, which is based in Coleford Gloucestershire, are manufacturers of concrete block paving and offer a range of block types to suit all purposes. Formpave were the pioneers of permeable paving and have completed numerous...
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