We do not look at energy efficiency strictly from the perspective of traditional passive energy efficiency solutions, instead, we do this in a much broader way and perform measurements, analysis, and develop suggestions and solutions for energy consumption of automated systems, while also keeping in mind passive energy activities. Since we have significant experience in building management systems, electrical supply, and various low-voltage systems, we are also very familiar with manufacturing processes, which is very important for industrial energy efficiency activities.
First, our specialists perform an energy audit – building inspection and analysis procedure to determine the main consumers of energy and to identify and assess the possibilities for saving energy. We offer to create an electronic accounting system of detailed energy resources which allows to recognise shortcomings in the operation of technical engineering systems, as well as the largest losses that occur as a result of irregularities in a building’s construction, equipment, or organisation of work.
To make something more efficient, the current consumption of the existing situation must first be calculated – how much and where is energy used. Then it must be understood in detail for which processes this energy is being used and in which buildings or spaces this is happening. With the most precise calculation of consumption in the existing situation, we will better understand where energy is being used, where energy is the most expensive, and where we use it inefficiently.
The next action for improving energy efficiency in industrial manufacturing is to relate this energy consumption to one unit of product, in order to understand whether these costs can be attributed to manufacturing. For data to be in an understandable form and with sufficient regularity, it does not suffice to record the numbers once a month. Without seeing the curve of how and where we have used energy, whether it happens during the day or night, we cannot come to conclusions and develop solutions. Possibly, the data will show that the highest energy consumption happens during the night, which hasn’t been noticed before. With such methods, we have succeeded to catch several night or holiday expenses that have occurred because of employee ambivalence, for example, with powerful equipment working during holidays much unnecessary energy has been used. Therefore, regular readings are of utmost importance for preparing detailed consumption curves. The best practice is to make 20-40 readings a day over a period of 3-6 months.
After that, we perform exterior measurements, for example, thermographics. Thus, we can assess the technical engineering systems – heating, ventilation, cooling, lighting, etc. – and understand where energy losses and unnecessary consumption are occurring.
Following a detailed analysis, we develop a proposal with calculations, what we offer as savings, and in which processes we suggest to do this. Our prepared proposals are all-encompassing, they do not only include replacement of doors and windows or insulation of walls. Yes, these are important components, but in our view, energy consumption is a much more important component in situations where ventilation, lighting, air conditioning, and heating are the largest consumers. In manufacturing, there can also be other types of energy, for example, steam, compressed air, and gas. In such cases, we assess which are the most expensive energy consumers and develop solutions for optimising them. We offer specific actions for ensuring less energy consumption, for example, replacing technically and morally outdated electrical motors with new ones. Likewise, we offer to divert losses or suggest to transfer heat that is created during manufacturing processes to an adjacent office building. We can use the heat created during manufacturing and transform this by-product into a useful resource. There are various methods for doing this, for example, heat accumulation. There is a lot of equipment in manufacturing that lets off heat – this can be either cooled with free cooling or, if there is too much heat, it can be transferred to heating systems or used for water heating. If a specific location is lacking power and manufacturing cannot further develop, energy can be freed up through energy efficiency measures, which can then be redirected into the manufacturing process.