687: The ‘Pleasant ’ Temperature Window Manipulation and Dynamics of Thermal Comfort in a Naturally Conditioned Space

Windows are one of the major means by which building occupants control indoor environment. This paper explores the improvement of acoustic, visual, olfactory and thermal occupant comfort thought window opening/closing operations in a selected naturally conditioned classroom without mechanical ventilation in a Nordic climate. The survey gathered 425 records of actual sensations and their corresponding thermal parameters. Participants reported 196 adaptive actions taken to improve comfort. Most of windows manipulations were related to thermal comfort. Pleasant Temperature represents the temperature range where occupants are satisfied by the thermal environment and show that the percentage of dissatisfaction against thermal sensations is lower than the one expected by standard. This study supports the theory that the width of temperature range can be highly variable when adaptive opportunities such as window opening are provided