New Thermodynamic Unit
The focus of the works was a tank-fed, domestic hot water storage cylinder supplying hot water to the school’s kitchen. The 2m x 0.8m cylinder used two 6KW electric immersion heaters to provide the hot water required for three large sinks, one hand basin, and one industrial dishwasher.
As part of our initial inspection, meters were installed on the TCWS (tank cold-water supply) to the cylinder and on the 3-phase electrical supply to the immersion heaters. The meters would enable us to measure and record energy/water consumption data over a 2-week period prior to decommissioning and removal of the old cylinder.
In this instance, we recommended and installed a Thermoboil TB 500E; this innovative water heater is a new concept in thermodynamic compact systems and combines a heat pump system and a water cylinder in one unit, and the thermodynamic collector panels were placed inside the tank space to capture the ambient environmental energy from the kitchen next door. Due to its greater thermodynamic power, heating time is much quicker, and ideal to meet Harris Primary School’s demands for large volumes of direct hot water.
Other advantages of the Thermoboil 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, and is quiet.
Decommissioning of the cold storage tank in the loft space means that the school does not require an annual inspection, or sterilising regime, saving the school around £750 per year.