London Institute of Healthcare Engineering

Client: Kings College London

Main Contractor: To be appointed

Architect: HLM

M&E: Cundall

Structural Engineer: Pell Frischmann

Sustainability Consultants: HLM GreenBuild

Project Value: £50m

Completion Date: TBC

Working alongside HLM Architects, GreenBuild was appointed at RIBA Stage 1 to provide BREEAM and general sustainability consultancy services.

Throughout the design development stage GreenBuild assisted the design process by undertaking Dynamic Simulation Modelling to enhance the design the passive measures.

A particular analysis was undertaken on the façade, ensuring internal daylight levels were optimised whilst mitigating any risk of overheating. 

GreenBuild’s appointment also included a BREEAM Pre-Assessment and Lifecycle Analysis (LCA) to ensure the scheme achieved BREEAM credit Mat01.


Thermal Comfort in circulation spaces

Thermal comfort within the main stairs of the building has been assessed in terms of internal temperature (Ti) during the summer (May-September) months. These have been compared against the recommended summer-time internal temperature range for circulation spaces within CIBSE Guide A (21-25C).

The general aim of this study was to ensure that the internal temperatures within the main stair core exceeding the recommended internal temperature range of 21-25C is around 3% of its occupied hours or less. However, the main focus is on the most effective strategies to reduce overheating risks within the main stair area, and prioritise these over less effective measures. 

The thermal comfort strategies used mainly focuses on the glazing and ceramic fritting specification of the main stairs and the introduction of openings to encourage natural ventilation.

Façade Recommendations for Thermal Comfort

The most effective passive strategies and glazing specifications that will ensure a reasonably  comfortable internal environment within the main stair core has been highlighted at right. 

Further strategies have been performed to ensure that the percentage of occupied hours where the main stair area will overheat (Ti>25C) is maintained at 3% during the May-September.

These additional strategies have been presented as ‘Additional recommendations’  below.