Objetivo
THE REDUCTION OF ENERGY USE FOR COOLING AND LIGHTING IN AN OFFICE BUILDING WAS STUDIED. THE BUILDING HAS A VOLUME OF 24 000 M3, DOUBLE GLAZING, 40 % GLASS AREA AND INSIDE BLINDS. THE INFLUENCE ON THE COOLING REQUIREMENTS OF THE BUILDING HAS BEEN INVESTIGATED AS A FUNCTION OF MECHANICAL VENTILATION (NOT COOLING) DURING OFF OFFICE HOURS, SHADING AND OF A REDUCTION IN LIGHTING. IT WAS FOUND THAT NO ENERGY WAS SAVED WITH MECHANICAL VENTILATION AS THE ENERGY CONSUMED BY THE FAN WAS ABOUT EQUAL TO THE DECREASE IN ENERGY USE FOR COOLING.ON THE OTHER HAND A REDUCTION OF LIGHTING FROM 20 W/M2 TO 15 W/M2 BROUGHT CONSIDERABLE ENERGY SAVINGS (+/- 25 %) DUE TO THE FACT THAT COOLING WAS NO LONGER REQUIRED AND THE ENERGY FOR LIGHTING WAS REDUCED. THE REDUCTION OF LIGHTING WILL BE BROUGHT ABOUT BY A CONTROL SYSTEM WHICH SWITCHES OFF THE LIGHT WHEN THE DAY LIGHT LEVEL IS ABOVE 700 LUX. TO THIS END A LIGHT SENSOR WAS SELECTED; A LIGHT DEPENDENT RESISTOR WHICH IS VERY CHEAP. MEASUREMENTS WERE MADE TO FIND RELATIONS BETWEEN THE SENSOR SIGNAL AND THE DAY LIGHT LEVEL IN DIFFERENT PARTS OF THE ROOM. ALSO HUMAN BEHAVIOUR AND ACCEPTABLE LIGHTING LEVELS HAVE BEEN STUDIED.
Tema(s)
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2600 AD DELFT
Países Bajos