Calculation and implementation of energy-saving technologies

Smart store

In modern conditions the system of complex automation of engineering systems of a grocery store, allowing realization of concept «Smart shop», is an additional opportunity to reduce operating costs, to gain a competitive advantage in the retail food market.

The programmable logic controller Danfoss MCX is used to control thermal screens, air conditioning, ventilation system, external and internal lighting.

Adaptive thawing

A special electronic algorithm allows the electronic control system to monitor the reduction in performance of each evaporator and to make a decision on whether defrosting mode should be activated.

This function requires a pulsed ETCV and a monitoring system.

On average, the inclusion of this function gives about 1% of the energy consumption of the system and pays off instantly.

Smooth management of head compressor performance

The essence of this technology is the ability to adjust compressor productivity as accurately as possible in relation to consumer needs. During the operation of the central refrigeration unit, the pressure on the compressors is constantly changing, since in the shop the mass of consumers working on their own volume.

The use of a smooth adjustment with the use of a frequency converter makes it possible to adjust the operation of compressors in relation to a change in load.

Furthermore, the use of a frequency transducer makes it possible to speed up the compressor engine over 50 Hz, which in turn increases the compressor performance at the same installed capacity.

At the moment, this technology saves energy and provides the specified capacity of the refrigeration unit.

The payback of the compressor frequency control solution is not more than 3 years.

Energy-saving front glazing

Installation of facade glazing on shelving windows (slides) is the easiest and most efficient way to reduce cold consumption and in turn energy consumption of equipment.

In the Russian retail market, there are two types of glazing installed on refrigeration equipment:

• K-coated tempered glass;
• Single or double glazed unit.

The principle of operation is simple: with the standard design of the rack case, about 80% of the load is generated by the warm air entering the window from the trading hall. In fact, cold showcases are starting to work on air-conditioning of the trading hall. The installation of glazing makes it possible to reduce, and in some cases to exclude, the air intake in the working volume of the window. The main advantage of glazing is the possibility of its installation in standard equipment, that is, not only at the stage of realization of the object but also during operation. The installation of such glazing in commercial equipment guarantees a significant effect on reducing the cost of the electricity consumed.