Building services specialist, LJJ, has completed the £14m mechanical and electrical installation at CLS Holdings’ Spring Mews mixed use scheme as part of Shepherd Construction’s £40m design and build programme.

Located in the heart of the Vauxhall Gardens Conservation Area south of the Thames, Spring Mews comprises a 378 student accommodation development, with on-site gym, swimming pool, cinema and laundry facilities, a number of flexible office/retail units and a 93-bed Staybridge Suite hotel, operated by the IHG Group, which is designed for residents with longer stay requirements.

The M&E installation has been designed around an energy centre devised by a Swedish energy management consultant to help deliver CLS Holdings’ sustainability goals for the scheme. LJJ installed a high-performing geothermal heat pump system, which supplies more than 80% of the development’s energy requirements, delivering heating, cooling and domestic hot water (DHW), with the waste heat from the cooling equipment used to supply the heating system and DHW.

The energy centre uses an aquifer as an energy source, supplying three Energy Machines with high-grade heat from the ground. The system also utilises waste heat produced by the building in the summertime by storing that heat in the ground until it is needed in the winter.

The mechanical installation also included boilers, thermal stores, calorifiers and plate heat exchangers, along with dry air cooling plant, a CHP and photovoltaic panels at roof level.

For the electrical installation, LJJ put in two large switch panels – one each for the hotel and the student accommodation – and a roof-mounted generator which will provide essential power for life safety systems.

Rising busbars have been used for power distribution in the student accommodation, with XLPE steel wired armoured cabling connected to a mains distribution board on each floor of the hotel. LJJ also installed a complex lighting scheme, which utilises LED, tungsten filament and fluorescent luminaires. The emergency lighting and exit signage is also LED and a key card system in both the student and hotel rooms ensures lights are switched off when not in use.

The electrical installation also included CCTV, a fully programmable fire system with sprinklers in the basement areas and the hotel, and extensive data cabling to ensure excellent Wi-Fi coverage.

Ronnie Elliot-Scott, Shepherd Construction commented: “Spring Mews was a complex project and LJJ was able to answer the brief from a technical perspective while working collaboratively with our team to ensure that the scheme remained on schedule.

“The company’s flexibility on site was invaluable; LJJ worked around our needs, putting in extra hours when we needed them to, which really helped to keep everything on track.”