Quality Tests of Smart Indoor Lighting
Another focus area is smart indoor lighting. This area is interesting because the potential for energy efficiency is great and because new innovative solutions make it possible to increase the quality of indoor environments.
The potential of energy savings is emphasised by the fact that 32% of the electricity consumption in the Danish public sector is spent on indoor lighting. Furthermore, in some cases lightning represents more than 40% of the total energy consumption in office buildings.
High-quality and energy-friendly lighting
In 2012 the mercury-vapor lamp was phased out due to low energy efficiency. However, there is still a big difference as to light quality and energy efficiency depending on which illuminates are chosen. The high level of development that the LED illuminate has reached makes it a good alternative to the mercury-vapor bulb and the low energy light bulb, because it is energy efficient, has high colour reflection and gives countless possibilities for creating dynamic lighting environments. With LED the energy savings are often found to be up to 50% compared to traditional light sources.
New solutions can control lighting intelligently and dynamically
By controlling lighting dynamically and intelligently, significant savings can be achieved. In many public buildings lighting is solely controlled manually. That makes the user a big influence on the energy usage. Numbers from the Danish Energy Agency show that 10% of the energy consumption can be saved by changing the users' behaviour. However, experiences prove this to be difficult and this is where technology can help lead the way to these behavioural changes.
By means of flow and temperature sensors, lighting can be automatically turned off when there are no people around. Sensors can be installed and used to measure the levels of light in certain rooms and to adjust the lighting so desired lighting levels can be attained. This makes it possible to use the daylight optimally in relation to the variations in the intensity of the light during the day/night and time of year, ultimately resulting in energy savings. Differentiated lighting adjusts to the needs for light, e.g. with more light in working areas and less light in hallways.
Smart Indoor Lighting creates spaces
Energy efficiency is not the only thing to look for when choosing light sources and control systems. People are inside 90% of the time. That makes it important to have high quality lighting in work places and institutions where people spend much of their waking hours.
Dynamic lighting can be an applicable tool for arranging rooms and creating an atmosphere that supports the different needs for levels and colour of lighting. Moreover, lighting can impact people’s energy level and circadian rhythm – which is particularly relevant to people working in shifts.