London School of Hygiene & Tropical Medicine

SAS International's active chilled beams feature throughout the School of Hygiene in open plan office areas, teaching spaces and IT suites.

Key features




London School of Hygiene & Tropical Medicine


Devereux Architects

Main contractor

Downie Consulting Engineers


SAS International

Completion year


System type

SAS130, Integrated Service Modules | ISM

Area M2

231 linear metres


United Kingdom

Product Groups

Metres of energy-efficient active chilled beams were supplied to the London School of Hygiene and Tropical Medicine’s new South Courtyard building in Keppel Street.

Paul Downie, Principle, Downie Consulting Engineers comments: “The environmental systems are designed to balance the buildings significant thermal gains with inherent passive construction and renewable sources, in this case, ground water abstracted from 70m below existing pavement vaults and providing a totally renewable form of cooling for the building.

Paul continues: “Heating is provided via a District Heating Main routed from a Combined Heat and Power plant located within The School of Oriental and African Studies at Thornhaugh Street, Russell Square. With heating and cooling, as the two major energy consumers for the building, both being provided via renewable and highly efficient sources, the total buildings energy CO2 emissions are minimised.”

The building achieves a ‘Very good’ BREEAM Rating and received a Low Carbon Buildings Award for its sustainable environmental systems including renewable energy sources incorporating the use of active chilled beams sourced with ground water supplied from geothermal bores. Other environmental systems include mixed mode ventilation, heat recovery, and photovoltaic arrays integrated in to Atrium glazing providing shading to internal spaces to reduce solar gain. A wind turbine has been installed at the highest point of the roof.

In addition to the active chilled beams SAS International’s Project Management division also supplied and installed service bulkhead panels, soffit linings and structural beam cladding. The design department worked closely with the project team and a number of sub-contractors to ensure seamless integration between the different design elements.

Mark Goodwin Associate at Devereux Architects comments: “SAS International were very helpful during the design stage by constructing a mock up incorporating all facets of the design so that the client and design team could view and assess the impact of the proposals and fine tune the system”.

SAS International active chilled beams feature throughout the building, in open plan office areas, teaching spaces and IT suites. In open plan office floors the striking design of the active chilled beams and other ceiling elements complement that of the surface mounted luminaires, a concept developed by Hoare Lea Lighting. Mark Goodwin continues: “SAS International were able to adapt and modify their systems, to incorporate features such as the luminaires to provide the client with the required unique effect in terms of aesthetics and function.”

The design involved the demolition of the existing 1920s lecture theatre situated in the middle of the South Courtyard and the insertion of a new structure rising five storeys, surrounded on all sides by top-lit atria. This new, reclaimed space accommodates areas of teaching and research space and two new Lecture theatres.

The project has exceeded its obligations for renewables and is an excellent example of how low and zero-carbon technologies can be incorporated into an urban setting. “The premise of the building’s design is to achieve sustainability throughout and in keeping with this principle the ventilation strategies incorporate heat recovery, lighting solutions are all daylight controlled and therein further savings are achieved within these systems”, concludes Paul Downie.

SAS130 metal ceilings also feature throughout the building, which was officially opened by HRH The Princess Royal.

Systems used