Goat Wharf is an 86 dwelling Notting Hill Genesis[i] housing development located in Brentford, with a mix of private and affordable rent. The heating and hot water is provided to residents via a communal heat network.
FairHeat[i] were approached by Notting Hill Genesis as they were concerned by the operating efficiency of the network at Goat Wharf. High network operating temperatures and poorly performing HIUs were resulting in overheating, high heat costs and an unreliable system.
FairHeat undertook a performance optimisation project which included site audits, onsite testing and inspections, and analysis of performance data. Once the analysis was complete and the root causes for poor performance were identified, FairHeat developed a fully costed business case for the improvement works to Notting Hill Genesis.
FairHeat and Notting Hill Genesis rolled out a full programme of works which included replacing the existing poorly performing HIUs with a new HIU unit in every dwelling, reducing the operating temperatures across the network through recommissioning and installing a new Guru metering system. Within the plant room, the main circulation pumps were replaced with smaller, more efficient units and a water filtration system was installed to address water quality issues on the main system.
As this was a retrofit project in an occupied development, it was identified at the beginning that resident engagement would be critical. Therefore, the project began with an onsite ‘kick-off’ meeting attended by all stakeholders where detailed surveys were undertaken to establish the best approach to installation that caused minimal disruption to residents – including residents with limited mobility. Meeting onsite meant that the contractor, Sycous[i], could identify several problems, including the original use of incorrect materials. This allowed a resolution to be agreed prior to wider installations and without disruptions to the programme.
Guru’s Hub II [ii]utility management device was installed in each dwelling. The fine-grained network performance data captured by each Hub was then analysed by FairHeat using the Guru Pinpoint[iii] performance monitoring platform as part of the post-installation monitoring process. This allowed FairHeat to monitor the progress of the installation project and to quantify the impact of the works.
The project resulted in a reduction in the heating network flow temperature from 80°C to 65°C, resulting in much lower heat losses, lower heat costs and no further complaints of overheating from residents. In addition, the pump replacement works have resulted in a £2,000 per year saving, which is a cost reduction of 90% when compared with the previous installation.
Cat Avenell-Pankhurst, Notting Hill Genesis, commented:
“We’re happy with the result of the project at Goat Wharf, the improvement to the network has meant the system is now much more reliable and we’ll be able to offer more affordable tariffs to our residents.
We faced several challenges along the way associated with the unique set-up of the legacy network, both Sycous and FairHeat were committed to working through these challenges and proposed effective solutions to any problem while keeping residents needs in mind at all stages.”