Oakhill Park has achieved a Code 4 rating for Sustainable Homes, the highest level locally for a new development in terms of reducing energy needs while producing 44% less CO2 than gas.
- Heated floor area: 5,200 m²
- Number of apartments: 60
- Heating and hot water demand: 156 MWh & 216 MWh
- Completion date: 2016
Ashgrove designed an innovative energy solution for Oakhill Park in London. Three 42kW Thermia Robust Ground Source Heat Pumps provide all the heating, through the underfloor heating system, and hot water requirements for the 60 apartments. The system will provide heating and hot water to each apartment cheaper than a gas system and with a 44% reduction in CO2. The combination of the heat pump technology, recovering waste energy and back up gas boiler system allows for the perfect balance between capital investment and both energy and financial savings.
Many similar projects are now endeavouring to reduce the number of boreholes by recovering waste energy wherever possible from the building. Suitable sizing, energy recovery and the benefits from the RHI scheme result in a very attractive return on investment.
Ground Source Heat Pumps
- 16 Boreholes, 150m deep
- 3 Thermia Robust Eco 42 kW with 5.000 litres hot water
- Production Hot Water > 80ºC from ‘de-superheater’
- Built-in BMS
- Gas boiler back-up
- Optional cooling function
Environmental & Economics
- Reduced environmental footprint
- Secured high energy efficiency
- 88% less CO2 emissions
- COP of up to 5.0
- Constant water temperature of 65°C (without supplementary heating)
- Improves the overall system’s seasonal performance factor
- Lowers the system’s running costs
“This is a very unique system design using the mature knowledge accumulated in the Nordic region, where air/ground source heating and cooling have been the norm for decades. Using their proven philosophy we can use smaller capacity heat pump equipment, ensuring radically reduced capital outlay and payback periods. Carbon compliance was the initial challenge for this project, which could be easily nachieved with ground source heat pumps provided the system was sized carefully”