The focus of the DT774a Postgraduate Diploma in Digital Analysis & Energy Retrofit programme is non-residential building stock, exploring schools and office buildings. Each year our PG Diploma students produce nZEB retrofit design proposals for real life schools and office buildings, with projects carefully selected to inform research and establish retrofit design principles.
In 2013-2014 the office project was a deep energy retrofit proposal for the Dublin Airport Authority 1960s former Aer Lingus Head Office Building using NEAP and SBEM. Click below to see a range of DAA Head Office Building Office Retrofit projects.
The retrofit presented particular challenges in terms of an established footprint and structure, with a low floor to ceiling structural zone, a main east - west orientation, issues of noise pollution and with a solution requiring both open plan and cellular office layouts. The focus of the study was to resolve a typical floor, with energy modelling undertaken on a typical bay. Students first developed a base model achieving current regulatory compliance, followed by a series of modelling studies of various solutions with a particular emphasis on the façade design and specification given the challenges to avoid overheating and associated cooling loads.
A variety of solutions and specifications were explored and proposed with a key emphasis on utilisation and exposure of the thermal mass and shading and low solar transmission glazing – all to limit overheating risk, along with intelligent services design solutions to optimise the finished floor to ceiling heights. Façade strategies included, twin skin, vertical external shading, high performance – solar resistant glazing, integral blinds and shading, with services design including exposure of ceiling thermal mass, low e air conditioning both local and centralised, low e lighting and task lighting, and a range of renewable energy solutions including PV and Geothermal.