Skip to content


In association with:   CIBSE Journal
CIBSE is currently upgrading its IT systems to improve core customer functions and increase efficiency and effectiveness. This will mean some website services will be offline until Monday 25 July. Help

Refurbishment Project Award

Norman Disney & Young

The Angel Building was an unloved early- 1980s commercial building in Islington, north London. It provided the perfect opportunity for Norman Disney &Young and Derwent London to build on their combined experience of delivering contemporary design, integrated with modern technologies.

Energy reduction was at the heart of the services development. A low-energy displacement ventilation system provides ‘free’ cooling for a large proportion of the year resulting in the high-efficiency water-cooled chillers being used for less time and enabling heat recovery of up to 65%. This gives a 44% reduction in CO2 emissions. To allow the system to overcome the loads associated with a modern-day office, solar gains needed to be minimised. Laboratory tests carried out by Norman Disney & Young give a clear indication of cooling loads achievable with the correct building design. Working closely with architects Allford Hall Monaghan Morris, a high-performance facade solution was developed that included a balanced proportion of glazing to solid elements, high-performance glazing and fritting.

Two biomass boilers provide a significant part of the heating load (representing 15% overall energy use). Variable speed pumping is used on both the chilled and heating water to reduce energy consumption to a minimum. Rainwater is harvested and used for flushing WCs and landscape irrigation, while water reduction measures include low-flow washroom fittings and waterless urinals. In addition, DALI lighting systems which can respond to daylight and occupancy levels reduce electrical energy.

Shortlisted

Royal Shakespeare Company, Stratford Upon Avon (BuroHappold)
The Service Personnel and V eterans Agency, Gloucester (Debut Services (South West) Limited)
The Student Centre, University of Bath (Hoare Lea)
The Percy Gee Building, University of Leicester (Shepheard Epstein Hunter)