GREEN Writeout 02 – Energy Saving Illumination Practices
Whenever organisations think of reducing energy expenses, heavy-duty machineries will always be the main concentration. According to research, 30% of their electricity bills come from interior lighting which was often neglected as compared to heavy-duty machineries. A small light bulb may be very cheap but many of such could generate yearly electricity bills of up to 5 or 6 figures. Organisations are looking at energy saving illumination practices to reduce energy expenses and 3 common energy saving ideas are implementation of “Fluorescent” lighting, “Photoluminescent” lighting and “Automatic” light dimmers in below illumination :
a) Fluorescent Illumination
Fluorescent lights are usually five times more energy saving than incandescent lamps and also have longer life span of up to 20 times. Many commercial buildings use fluorescent lights in passageways but not in individual workstations. As a result, the usage of fluorescent illumination does not show significant reduction of energy cost. If an organisation is able to implement fluorescent illumination across the whole commercial building, it will definitely be more energy efficient as compared to incandescent lamps.
b) Photoluminescent Illumination
Photoluminescent illumination does not require electricity and maintenance as it provide “glows” instead of lights. Photoluminescent illumination is usually used for directional signs such as exit and signage. Most companies are still using incandescent lights for exit signs which cost approximately $1,500 over its lifespan. As for photoluminescent signs, it is cheap and studies has shown that companies which replace 100 incandescent lights with photoluminescent signs save more than $3,500 a year in electricity expenses. Multiply this amount by 25 – the ordinary life expectancy of photoluminescent exit signs and the price discounts approach $ 90,000. In addition, photoluminescent exit signs are recyclable as well.
c) Automatic Light Dimmers
Connecting lights to automated light dimmers allow organisations to save on electricity expenses by adjusting brightness according to company operations and natural light. As an alternative of manually readjusting light degrees or exhorting employees to turn off lights, automated dimmers will do the job for you.
LED lightings and Effective Lighting Control System helps to illuminate areas without spending too much on energy bills. Incorporating sensors into lightings will also contribute to energy saving. LED lights also have longer lifespan than other lightings. The system produces a thorough solution for energy requirements within workplaces and classrooms. All of the systems components can be easily replaced by regular maintenance staff with no need for special training.
The system was designed according to the following emphases:
– Optimal Lighting, in terms of light intensity and quality. (view frame)
– Maximal saving of the devices’ energy consumption by utilizing the most efficient technologies up to date.
– Additional saving by smart, sensor-based control that prevents activation of the illumination and air-conditioning system when unnecessary.
– Simple and easy installation, compatible to any hall, corridor or room with no regard to the existing power grid structure.
– Maximal stability by planning of the illumination devices and control system to work many years with no need of maintenance.
a) The Illumination System
i) Illumination Devices offer the following features :
– LED-Based and therefore offer a very long life span.
– Higher quality than fluorescent lighting (37% more efficient Color Rendering) that eases reading.
– Possibility of dimming when full lighting is not necessary.
– Continuous lighting with no flickering, which improves the employees or students’ functionality.
– Over 70% more energy saving than fluorescent lighting.
– Modular structure, easy and simple access to all of the illumination components for simple and cheap maintenance.
– Illumination devices designed according to common light fixtures (For both surface mounting or lowered ceilings) which allow simple and easy replacement. Existing fixtures may also be converted.
ii) Illumination Control System :
– Control System based on volume (Doppler) and light sensors.
– The System offers light intensity correspondence in rooms according to the amount of sunlight in the room and shuts the lights out when the room is empty or parts of it are not in use.
– Decentralized System, with no central detector. The system allows any illumination device to act according to its local environment. (For example, the light intensity is determined by the amount of sunlight that reaches certain tables so that the lighting will be uniform and cases of over-lighting will be prevented).
– Another advantage of a Decentralized System is that it will remain functional even if a single part of it malfunctions.
b) Air Conditioning Control System
i) Volume-Sensor Based System that shuts the air conditioner down when the room is empty.
ii) The System is compatible to any infrared remote-controlled air conditioner.
iii) The System is wireless (Transmits the required signal to the air conditioner when needed) so that the installation does not require any physical connection to the air conditioner or its power grid.
a) Approximately 70% energy saving in consumption!
b) Additional energy saving due to the devices’ dimming and shutting feature. (approximately 30% of the time)
c) Additional energy saving of dozens of KWh every year due to the automatic shut down of the air conditioning system.
d) Very short ROI period.
It is important for organisations to adapt the right illumination method in order to achieve energy saving and prevent unnecessary costs.