Cold storages require cool lighting solutions
One of the greatest benefits of LED lighting is efficiency in energy consumption. The operating efficiency of well designed LED lighting is outstanding compared to the traditional solutions. LED luminaires give out more light with the same level of energy consumption and at the same time they don´t give up as much heat as the traditional ones. When planning lighting for cold premises the heath load plays an important role. Every watt that the luminaire wastes as heat has to be cooled down by air conditioning.
This fact was also recognized in HKScan food company´s factory in Eura, southern Finland, where renewing project of the cold storages had started in 2010. As part of the project also the lighting of the cold storages was renewed.
-The target was to gain savings in energy consumption. Specifically it was decided that the luminaires in the cold storages should use less energy and produce less heath, tells us the responsible project engineer Teemu Perttu from HKScan. It was also important to find additional energy savings by utilizing intelligent energy control systems. LED lights turn immediately fully on which makes it convenient to turn off the lights when there is nobody working in the area, continues Teemu Perttu.
Quality is important
In the beginning of the project the new LED technology also raised some questions. When working with food the quality of the light plays an important role. In production the light may not distort the colour of the meat but the aim is to reach a neutral colour rendering. - The biggest worry we had in the beginning of the project was that the LED light would be too blue. Now that the luminaires are installed, we have noticed that this is not the case, confirms Teemu Perttu. The colour of the light and the rendering of the colour are important factors in the production line as the meat cutter must see the different colours in the meat.
In addition to improving the quality of the light, we also managed to increase the level of the light without notable increase of the heath load. Good lighting improves working productivity for example as the labels in the packages are easier to read. - Earlier the storages were bit dim but now we have measured there 500 lux. The new lighting has also improved the safety of the work.
Plans for future already exist
The renewing of the cold storages in the Eura factory are not stopping here. A plan and an offer for rennovating the next cold storage already exists. - The level of energy savings from the completed project will be validated by measurements and as the delivery of the project worked well, there are no obstacles for the continuation, says Teemu Perttu.
The long term objective for HKScan is that in the cold storages are going to be equipped with LED luminaires as far as possible.