Ventilation measures for heritage office buildings in temperate climate for improvement of energy performance and IEQ

Research output: Contribution to journalArticle

Abstract

Heritage buildings are usually culturally protected as well as naturally ventilated. As such, it is difficult to control the airflow, which depends on the temperature outdoors as well as the wind. This causes issues with the thermal comfort and the indoor air quality. In this study, status determinations were conducted for 12 heritage buildings with offices, across Sweden. Field measurements on temperature, relative humidity, CO2, and air change rates in the indoor climate, together with a survey with the occupants, confirmed these issues in these buildings. In addition, for two of the buildings, field measurements were used together with building energy performance simulations in order to determine the impact of two different ventilation measures on the indoor environmental quality (IEQ) and the energy use. A mechanical ventilation system with heat recovery, hidden inside a chimneypot, was shown to reduce CO2 concentrations and potentially reduce the energy use by up to 39 kWh∙m-2. Dampers for the reduction of the air change rates out-of-hours, installed in the pathways for the natural airflow through chimney pots, were shown to potentially reduce the energy use by up to 11 kWh∙m-2.

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Research areas and keywords

Subject classification (UKÄ) – MANDATORY

  • Building Technologies

Keywords

  • Ventilation measures, Heritage buildings, Energy use, Indoor air quality, Thermal comfort
Original languageEnglish
Article number109822
JournalEnergy and Buildings
Volume211
Publication statusPublished - 2020 Mar 15
Publication categoryResearch
Peer-reviewedYes