CASE STUDY SCOTSTOUN HOUSE
Low carbon architecture The team took a holistic design approach, integrating the architecture, building services and structural engineering. The end result is an exemplary sustainable and low energy environment, which uses passive design techniques and renewables. A low carbon design was a key aspect of
The redevelopment has achieved an Energy Performance Certifi cate A rating, a signifi cant achievement for a 1960s Grade B listed building
the brief. As already noted, the project is extensively daylit and uses natural ventilation throughout the occupied spaces, thereby negating the need for mechanical cooling. Comprehensive integrated control was required, and the chosen system successfully integrates the control of the electrical and mechanical services, with comprehensive monitoring and metering. As an example, the gas and water meters are monitored, the latter enabling any leaks in the buried distribution mains to be identifi ed. The lighting system’s electricity consumption is also extensively metered, and the data from this helps to optimise the lighting control, which in turn assists in maximising the performance of the daylighting strategy. The internal and external environments are comprehensively monitored for temperature, relative humidity, CO2, and
light levels. The system includes a weather station, the output of which has been used to validate the original modelling of daylighting against measured values.
Making the grade The redevelopment has achieved an Energy Performance Certifi cate A rating, a signifi cant achievement for a 1960s Grade B listed building. Even with the restrictions imposed by the listing, the permitted U-values of the building elements are signifi cantly better than required by the UK Building Regulations. For example, the U-value of the glazing is 1.6. Optimisation of thermal comfort is in
part achieved by the use of the phase change thermal mass that is incorporated into the ceiling construction. Solar-powered ‘windcatchers’ have been provided for the natural ventilation of internal meeting rooms. The design team has built on the simplicity
of Peter Foggo’s original design and has created an elegant refurbishment, which still adheres to the modernist principles of ‘light and air’. What’s more, the POE reveals that, despite the challenges, the occupants are comfortable and impacts on the environment are minimised. CJ
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36 CIBSE Journal February 2013
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