Paper Conference

Proceedings of eSim 2001: 1st Conference of IBPSA-Canada

     

A METHODOLOGY FOR DETAILED CALCULATION OF ROOM ILLUMINANCE LEVELS AND LIGHT DIMMING IN A ROOM WITH MOTORIZED BLINDS INTEGRATED IN AN ADVANCED WINDOW

Andreas K. Athienitis, Athanassios Tzempelikos

Abstract: This paper presents a methodology for detailed lighting/daylighting numerical simulation of an office space with an advanced window system and calculation of dimming levels for electric lights. The particular system considered is a double-glazed low-emissivity window with motorized highly reflective blinds between the two glazings installed in an outdoor test-room and operated by a custom-built computerised building automation system. The daylight transmittance equations for the window system were determined from experimental measurements. A major requirement for on-line control is the automatic determination of the blind tilt angle required in order to avoid glare and simultaneously allow the maximum possible amount of daylight in the room. Numerical simulations indicate energy savings of over 70% in electricity consumption for lighting.
Paper:
esim2001_1