Celsius Energy proposed a geoenergy solution to replace an aging HVAC system
CO2 EMISSIONS -87%
ENERGY COSTS -67%
LOCATION South-West England
PROJECT Geoenergy solution
SURFACE 4500 m²
INITIAL SYSTEM Gas boilers and chillers
DURATION 8 months
CELSIUS ENERGY DIFFERENCE
Small drilling footprint and uninterrupted site activity
Need
A technology center with 300 employees needed to replace the aging HVAC (heating, ventilation and air conditioning) system for a 4500-m2 mixed-use building, currently heated by gas boilers and using air chillers for cooling.
The new solution has to contribute to the owner’s emission reduction ambitions (net zero by 2050) and ensure energy savings in the context of rising energy costs; at the same time, the impact on site operation has to be minimized
Solution
Celsius Energy proposed a geoenergy solution to replace both the gas boiler and the chillers with a renewable source of energy. The solution consists of 18 closed loop, inclined wells, connected to a high-temperature ground-source heat pump (GSHP) covering 100% of the cooling needs and 87% of the heating needs. The inclined wells are drilled from the same point on the ground surface in a star-shaped arrangement to a depth of 200 meters, significantly reducing the surface footprint of the installation.
Result
The proposed system allows achieving emissions reductions of 100 tons of CO2 per year from the first year, with the aim to reach net zero through electricity decarbonization. Gas consumption is reduced by a factor of 7.6 and overall energy costs by £40,000 a year. Moreover, the system can be built over a period of 8 months with minimum disruption to the site activities, thanks to the innovative design of the borehole heat exchanger.
“Our company has committed to ambitious ESG goals among which making our operations as sustainable as possible is foremost. After careful consideration, geoenergy was by far the best option to ensure thermal comfort, drastically cut costs and significantly reduce emissions. ”
Jonathan D., HSE & Facility Manager