Harris Primary School THERMOBOIL Installation
ClientLancashire County Council
Location Harris Primary School, Fulwood, Lancashire
Requirements To replace outdated domestic hot water cylinders with a new, highly efficient thermodynamic unit and remove the existing cold water storage tank from the school’s attic.
ObjectiveTo make the school more energy efficient and, in doing so, reduce the school’s CO2 emissions and energy bills.
New Thermodynamic Unit
Lancashire County Council approached SC Horsfield Building Services Engineers to update the hot water system at Harris Primary School in Fulwood, near Preston, in order to improve the energy efficiency of the school, thereby reducing energy costs and emissions.
The focus of the works was the hot water supply to the school’s kitchen, which was using a tank-fed, domestic hot water storage cylinder. The 2m x 0.8m cylinder used two 6KW electric immersions to provide the hot water required for three large sinks, one hand basin, and one industrial dishwasher.
As part of our initial inspection, we installed meters on the TCWS to the cylinder and on the three phase electrical supply, allowing us to monitor the energy consumption over a two week period. This would enable us to show any improvements following the installation of the new, highly efficient thermodynamic unit.
We recommended the installation of a THERMBOIL unit, a new concept in thermodynamic compact systems. This innovative water heater, which includes a heat pump system with solar gain and a water tank, has been designed to capture the ambient solar energy to heat water efficiently, thereby reducing energy consumption compared to conventional systems.
In this instance, we installed the THERMBOIL RH (Rapid Heating) unit. The THERMBOIL RH uses panels which can be placed inside or outside the establishment, meaning they can capture both solar and environmental energy. Due to its greater thermodynamic power, heating time is much quicker, ideal for Harris Primary School’s demands for large volumes of direct hot water.
Other advantages of the THERMBOIL RH unit include: two compressors connected to two independent circuits, maximising efficiency; shorter recovery time; an auxiliary electrical system; and an anti-legionella system. The unit has a high-quality finish, an appealing design, is quiet and does not require an annual inspection or sterilising, saving the school around £750 per year.