Renovering af skoleventilation - indeklima og energiforbrug

Danske skoler er notorisk underventileret. I dette projekt blev betydningen af forskellige ventilationsløsninger for klasseværelsers indeklima, elevernes oplevelse af indeklimaet og deres præstationer samt energiforbrug undersøgt. Artiklen præsenterer målinger af luftkvalitet og energiforbrug

Effects of Exposure to Carbon Dioxide and Human Bioeffluents on Cognitive Performance

AbstractThe purpose of this study was to examine whether exposures to CO2 in the range of 500ppm to 3,000ppm with and without bioeffluents influence cognitive performance. Twenty-five subjects were exposed in the climate chamber for 255minutes. Cognitive performance was examined by multiple tasks including proof-reading, addition, subtraction, text typing, neurobehavioral tests, Tsai-Partington task, and d2 attention task. Subjective ratings of comfort and experienced acute health symptoms were collected, physiological responses of subjects were monitored and the saliva samples were collected to analyze stress biomarkers. The results show that during exposure to bioeffluents with CO2 reaching 3,000ppm speed of addition was significantly reduced, subjects responded significantly quicker in redirection task and completed significantly less correct links in Tsai-partington test, which may imply that arousal (stress level) was an underlying mechanism