Energy Saving and Life Cycle Analysis of a Daylight-Linked Control System

Abstract

The main purpose of this work is to examine the environmental impact of a daylight-linked dimming lighting control system integrated in the Lighting Laboratory of Electrical and Electronics Engineering Department, Sakarya University. For this purpose, total annual energy savings and greenhouse gas emission savings is performed in terms of measured annual in operation data and calculated life cycle energy data. The results indicate that the system provides 1,519.55 kWh annual energy savings and spends 365.26 kWh life cycle energy. Assuming that life time of a lighting control system is ten years, annual energy spent by the control system is estimated 36.54 kWh/year. Total annual lighting energy savings, subtraction of estimated annual life cycle energy from measured annual energy savings, are calculated 1,483.01 kWh which is nearly 40% of total annual lighting energy consumption of the test room accordingly. In conclusion, it is established that emissions of the test room are reduced 2.71 tCO2 annually by the lighting control system proposed in this work.