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Abstrakt

Much of the existing building stock typically found on business parks and industrial estates in the UK are poorly designed in terms of energy efficiency, occupant comfort and indoor air quality. This paper reports work undertaken to investigate the performance of a typical retrofitted lightweight office building in the UK in order to identify opportunities for improving its environmental performance and energy efficiency. The case study building selected is a retrofitted lightweight two-storey commercial building located in Lichfield near Birmingham in the UK midlands which is considered representative of this type of building.
To assess actual performance of the case study building, quantitative and qualitative field measurements were conducted. Air temperature, CO2 concentrations and relative humidity have been measured in all the main zones of the building. Furthermore, to assess the building behaviour in more detail, pressure testing and energy meter readings were conducted. Subjective responses to the environmental conditions were investigated by questionnaire.
This paper provides an overview of the actual building performance and comparison of the quantitative and qualitative studies. The current performance of the case study building reveals that there are great opportunities to take advantage of natural ventilation and intelligent control strategies to improve indoor air quality and thermal comfort while reducing energy consumption.

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