Design of power efficiency

Power efficiency is a complex parameter which reflects specific values of the power resources. To our mind objects shall be divided according to the required result:

• Objects of the housing sector (power resources spent on heating, hot water supply, energy supply and heating supply);
• Objects of the process sector (power resources spent on heating, hot water supply, energy supply as well as heating supply on process and technology equipment including transportation);
• Special objects (line structures, etc.)

All the elements – consumer electronics, process equipment and construction of buildings shall be certified according to the rate of energy efficiency. Resources consumed to provide the necessary life conditions and objects security are considered as common. They include heating and heating supply, power supply.

Pursuant to the Federal law №294 the class of the energy performance shall be indicated in the process of new and repaired objects commissioning. When commissioning an object is determined by one of the following classes of energy efficiency – A, B or C. These buildings are differed by the lower level of heating consumption due to the rate of heat loss through such blocking elements as walls, windows, roofs, etc. the rate of the removed heat from the ventilation and sewage systems is also considered.

Requirements of energy efficiency are this or that way concern the requirements from the supply organizations. For example, heating supply organizations include the rules to the automated units for counting thermal energy and the use of automated mixing shunts and other temperature controlling units.

The issue of the energy efficiency rises in the course of engineering. The regulatory documents contain requirements for the heat transfer resistance of the walls, stained-glass windows, windows, coverings, floor structures depending on the function of the objects and the regions. When calculating norms specified for each region it is necessary to consider air conditions in the cold period of the year (temperature, wind speed) according to the average ambient temperature during the heating season. The specification code 50.13330.2012 (Thermal security of structures) which replaced SNip 23-02-2003 shall be considered as the basis.

The procedure to determine the class of energy efficiency is calculated on the basis of comparison of the specific consumption of the thermal energy with the normative amount.

One of the main methods for energy saving is the thermal energy recuperation. Modern ventilation, heating and air conditioning equipment makes it possible to use the heat not only for heating in the cold period of the year but also in the warm period when it is cold. The use of such equipment allows the maintenance costs to be reduced by 10-20%. Various rotary or plate recuperators are used. One may also come to use recuperators with intermediary heat exchangers.

In order to understand the advantage of using such energy efficient systems when engineering objects one can see the statistics. Any building which is being built requires expenditures on ventilation, air conditioning and heating systems which are about 10-15%; service maintenance requires another 5-10% and other expenditures are the ones of electricity – 70-80% from total expenses. That’s why the use of energy saving systems help save significant amounts. By investing at the stage of engineering and assembly of energy efficient systems you save on your future expenses.

Our top-ranked specialists will help you find the engineering solutions for your projects.

Call +7(812)740-47-75 or write to info@bengs.ru.