New Tyneham heat pump cascade installed at a Camrbidge school

Two Tyneham 290HT 27kW air source heat pumps have been installed in cascade for underfloor heating in a new extension at school in Cambridge.

To effectively meet the heating requirements of the new school extension and ensure an even distribution of heat, Sotham Engineering Services Ltd has installed a new system that includes two 27kW Tyneham 290HT heat pumps using natural refrigerant. These pumps are arranged in a hydraulic cascade setup and are connected to a 500-liter buffer cylinder, which also features an electrical heating element, controlled by a BMS. The buffer connections were also supplied by Hamworthy.

Instead of depending on a larger single heat pump that might operate inefficiently at partial loads, the new cascade system at a primary school in Cambridge uses multiple units with inverter-controlled compressors. This setup allows the units to adjust their capacities as needed, providing a more precise match to the school's actual heating demand. Additionally, as the new system can adjust to keep the heat pumps operating at their most efficient state, cycling of heat pumps and unnecessary energy consumption is avoided.

The new heat pump installation at the school also provides the school with increased protection against breakdowns. Unlike a single heat pump installation, which could result in total heat loss during a malfunction, the new Tyneham 290HT cascade installation will supply the school building with continuous heating, as and when needed. Moreover, as the workload is shared between two heat pumps, which reduces stress and wear on individual components, the school is protected by a robust heating solution.

Following a previously successful collaboration with Hamworthy Heating on the schools existing heating system, Sotham Engineering were keen to stick with a brand they could trust on the second phase of its project.

Ricky Harris, Sotham Engineering Services Ltd comments:

“We choose Tyneham heat pumps due to their overall performance and efficiency. Having collaborated with Hamworthy during the first stage of the project, we found them easy to work with and always available to provide support and assistance”.

Following a successful installation, students and pupils alike at the new building at the school are now benefiting from a reliable and efficient heat pump system that will help the school reduce its carbon footprint and lower operational costs.

To read the full case study visit, here.