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Great Ormond Street Hospital

WSP | Parsons Brinckerhoff is a key consultant on Great Ormond Street’s extensive redevelopment programme, not due for completion until 2025. The four-phase programme will create a sustainable, leading-edge clinical facility employing low-energy solutions.

Our client’s challenge

The hospital’s early-20th-century buildings are nearing the end of their useful lives, and it is undergoing a programme to refurbish and replace its facilities to meet the demands of modern clinical care.

The programme is now in its second phase: the construction of the Mittal Children’s Medical Centre, of which Phase 2A involves the construction of the Morgan Stanley Clinical Building. This will include seven floors of in-patient wards, state-of-the-art operating theatres enabling live video link-ups, and enhanced diagnostic and treatment facilities. The building also contains the catering facilities for the whole hospital.

Our approach

WSP | Parsons Brinckerhoff’s design involves installing decentralised interconnected primary heating and cooling systems to create an “energy loop”, which enables the linking of the primary services to adjacent buildings and systems, maximising efficiency by ensuring that the systems are optimally loaded at all times.

The linking of the systems also allows the recovery of heat from the heat rejection systems of adjacent buildings to feed into the low-grade heating systems.

WSP | Parsons Brinckerhoff’s solution also includes combined cooling, heating and power (CCHP), mixed-mode ventilation, a high-performance building facade and a brown roof. Greater use of off-site construction is improving efficiency and the use of concrete with a reduced cement content will result in lower embodied energy.

When the 3MW CCHP installation is complete at the end of Phase 2B in 2016, it will reduce carbon emissions across the hospital campus by more than 3,000 tonnes per year.

The hospital’s programme has already won best environmental strategy at the Building Better Healthcare awards in 2008 and best ecological product for the installation of ammonia chillers for the Variety Club Building.