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Dynamic Lighting and Natural Ventilation in Patient Rooms at New Psychiatry Bispebjerg

This paper presents preliminary results of analyzes of the indoor environmental quality (IEQ) in a full scale rotatable 1:1 mockup of a patient room. As initial part of the planning of the indoor environment at a new mental hospital, the project seeks to uncover the natural differences and limitations of the building, caused by the geographical orientation. Examining the outdoor diurnal variations and their effect on the indoor environment, in order to create a balance between on the one hand, daylight and artificial lighting and on the other hand the demand for passive cooling, using natural ventilation. The analysis discuss potential health aspects of daylight and fresh air and proposes a new strategy for dynamic artificial lighting, including natural ventilation to supplement mechanical ventilation. In this article we uncover daylight conditions based on two main parameters; 1) the geographic orientation (N, S, E and W) and 2) the season (summer and winter). Based on the preliminary data and the regional daylight conditions, the article proposes a new way to plan the indoor environmental quality called Lattitude and Orientation Compensated Architectural Lighting (LOCAL).