In this second webinar in the series, Professor David P. Wyon presented result from his research on the impacts of thermal and air quality on the performance of office work. The studies were performed as climate chamber experiments, simulated environment experiments or field intervention experiments.
Results of this extensive research include:
- increased ventilation rate as well as increased perceived air quality was found to have a positive impact on the performance of the office workers;
- an intervention study performed in a call center found that increasing the outdoor air supply rate resulted in a 6% decrease in the average duration of a call if the AHU filter was clean;
- if the filter was dirty, the same increase in outdoor air supply led to 8% higher average talk times, i.e. with a dirty filter, the increased ventilation rate had a negative impact on performance!
- higher indoor temperatures and a relative humidity below 20% has a negative impact on the eyes, which was found to result in a lower work rate;
- providing those working in an office with a cool, quiet and clean environment is an investment that pays for itself due to the negative impacts on work rate (up to 8%) of too elevated temperatures, background noise and air pollution.
- allowing subjects in a study to choose themselves what IEQ improvements they preferred between noise, lighting, view out, privacy, temperature & IAQ resulted in less dissatisfaction at a 50% budget than giving the subjects all IEQ improvements (100%budget)
For those of you who missed the webinar #2 on November 21st, a video recording of the presentation available on the YouTube in English (link here) and in Swedish (link here). The presentation in PDF can be downloaded here (link here).
Photo by John Woollett