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VENTILATION 2 M&E CASE STUDY


HEALTHY PACKAGE


Natural ventilation has helped to keep the projected CO2 emissions for a planned new health service unit to a minimum, according to the project’s M&E contractor. Andrew Brister reports


T


he mechanical and electrical (M&E) services applied to a new building are, of course, crucial to its effective operations. But all too often, say


some M&E engineers, these services are not sufficiently taken into account during a project’s design stages. Engineering consultancy Atkins has provided the M&E design services for a new Child and Adolescent Mental Health Services unit in Colchester, for client North Essex Partnership NHS Foundation Trust. Atkins argues that the building’s designed- for-performance approach is benefiting from its approach of including M&E from the project’s inception. ‘The importance of the early involvement


of the M&E team was crucial if we were to achieve the BREEAM rating,’ says James Bourne, senior building services engineer at Atkins and a CIBSE Low Carbon Consultant. The design has received a BREEAM Excellent rating. ‘As an M&E team, we demonstrated what


A representation of the new Child and Adolescent Mental Health Services unit, which also includes some external therapeutic facilities


was available, the associated costs and what carbon savings would be achieved if we went for a particular technology,’ Bourne adds. ‘The overall design plan was to provide


a healthy, bright environment that creates a sense of well-being to aid the occupant’s recovery treatment.’ The design eschews mechanical ventilation and air conditioning where possible, and the team has looked at all possible ways of utilising renewable technologies. The building accommodates some


external therapeutic areas such as a sports pitch, around which the whole building is structured. Internal courtyards in the two wards allow rooms to be easily naturally ventilated due to the shallow plan. The natural ventilation strategy uses


Monodraught’s Windcatcher technology. The design by Atkins and Monodraught covers 95% of the building and has Windcatchers above the building line


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May 2011 CIBSE Journal


59


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