Reducing Carbon Emissions Whilst Meeting Year-Round Energy Demands
Client: Hamworthy
End Client: Sunderland City Council
Location: Stansfield Business Centre
Goal: Reduce carbon emissions and reduce environmental impact
Project: Installing and linking an air source heat pump to a wall hung boiler
Products: Tyneham air source heat pump and a Stratton mk3 wall hung boiler
Background
Like many local authorities, Sunderland City Council is actively addressing the global climate change crisis and has committed to reducing carbon emissions from its operations. As part of this, a dedicated team has been created and tasked with finding solutions to reduce energy use across council-run buildings in Sunderland.
One of these buildings was the Stansfield Business Centre. It had been identified that their current high energy heating system was due for replacement. Alan Cowgill, who is Mechanical Building Services Engineer at Sunderland City Council and works as part of the specialist energy reduction team, saw this as the perfect opportunity to replace it with a more energy-efficient system.
The Brief
The existing heating system was served by two wall-hung gas boilers and was designed to operate at elevated temperatures, with high-grade heat at peak loads. Because of this, Alan Cowgill had already identified that an Air Source Heat Pump could not replace the system alone and instead, a hybrid solution would be needed. The project was assigned to Hamworthy and our specialist engineers here at Compac.
The Solution
It was decided that the best option to meet all requirements and not limit operational effectiveness was to opt for a hybrid solution – an Air Source Heat Pump would be the lead source of heating, with a new more energy-efficient gas boiler supporting with heating when elevated temperatures were required. Our team, along with the team at Hamworthy, removed the existing heating systems/boilers and installed a 32kW Tyneham Air Source Monobloc Heat Pump and a 500L buffer cylinder in which it is connected to.
The Outcome
A Tyneham heat pump is known for its exceptional operational reliability, top-tier quality, and outstanding performance - they deliver efficient, low-carbon heating with a co-efficient of performance (COP) rating of up to 4.85. As the primary heat source at the Stansfield Business Centre, the Tyneham heat pump heats water to 55\u00baC, which is stored in a buffer tank. When additional heating is needed, the system seamlessly switches to the Stratton mk3 condensing wall-hung boiler, which serves as the secondary heat source to meet the demand. This configuration ensures year-round reliability, with the boiler supporting the heat pump, while optimising energy efficiency at all times.
The Stratton mk3 offers impressive performance with a 5:1 turndown ratio, low-class 6 NOx emissions across all models, and up to 97% gross seasonal efficiency. The entire system is managed through a Building Management System (BMS) designed by WS Controls, providing Sunderland Council with a user-friendly platform to monitor and adjust set points either on-site or remotely. This advanced control capability ensures the heating system operates efficiently and effectively at all times.
Watch the video case study below which features our very own Director, John-Paul Malpass.
