Abstract
Over the last decades, strong focus has been placed on the energy efficiency of buildings; not least school buildings. Energy performance (EP) of buildings is nowadays in principle described by one single indicator based on purchased energy in kWh/year.m2. Another important building performance aspect is the indoor environmental quality. This study’s overarching goal is to identify school buildings with a good balance between energy performance and indoor environment. Thus, this paper investigates possible correlations between information given in energy performance certificates (EPCs/e.g. energy use, year of construction, type of ventilation) and measured indoor environmental parameters. The work comprises investigation of approximately 20 school buildings with different ventilation systems in Gothenburg. In-situ investigations of the buildings’ properties and ventilation systems were conducted. Indoor environmental parameters were recorded during one week in each classroom. In this paper, indoor temperature, absolute humidity added indoors and CO2 concentration data are compared with the corresponding school’s energy performance data and ventilation type. Results suggest that mechanically ventilated buildings have clearer relationships between energy performance, building indicators and measured indoor environment. For buildings such as naturally ventilated, the relationships are usually weak, and the values spread over much wider ranges.
Highlights
Studies have confirmed the importance of highquality indoor environment and its impact on health, performance or absenteeism [1]
This paper presents results from an initial analysis of buildings’ energy performance data from energy performance certificate (EPC) and indoor environmental quality (IEQ) values collected during measurement campaigns conducted in primary schools in Gothenburg
3.1 Energy performance and building characteristics. This part of the analysis investigates potential relationship between building characteristics available in the EPC and the energy performance values of all 21 school buildings studied
Summary
Studies have confirmed the importance of highquality indoor environment and its impact on health, performance or absenteeism [1]. In school buildings, this is of a particular importance, as schools accommodate more sensitive occupants for a substantial part of their day. Additional actions must be taken to fulfil the required levels of IEQ, too Some of these additional measures can affect the energy consumption of the building. One example is the need for installation of a mechanical ventilation system
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