How to know the power of the refrigerator?
That for household appliances users this issue did not become an impossible task, more than a decade ago in Europe a law appeared that all equipment should be decorated with a noticeable marking with an unequivocal indication of the consumed electricity per day or year. The value, of course, indicates the averaged, but nevertheless, it is possible to calculate the energy consumption of a concrete refrigerator with sufficient accuracy.
Another thing - the very classification of energy efficiency level. Previously there were 7 symbols in the letters of the Latin alphabet: A, B, C, D, E, F, G, where A is the most economical technique, and G is the most wasteful. Today A +, A ++ and A +++ added to them, which improved the performance of A. One + equals minus 10% of consumption, two + minus 30%, three + means minus 50% of consumption. However, the data for getting on the classification list is so averaged that even two similar refrigerators in the same class can be very different when it comes to power consumption.
Typical annual energy consumption of a refrigerator per year is about 400 kW / h, although this value is very average. The electricity consumption is affected by the volume of the refrigerator, the minimum possible temperature in each of the chambers, the availability of additional functions( self-defrosting, screen, ice maker, etc.).
The problem of calculating the power of the refrigerator
The main difficulty is to calculate the power of the refrigerator in that the main energy consuming element - the compressor - does not work continuously, but in periods. In any refrigerator, starting from domestic Saratov and Biryusa to overseas Samsuns, Indesites and Atlantes, freon circulates smoothly until the sensors mark the desired temperature, after which the device switches off. Also complicate the task of asynchronous motors, which at the time of launch can consume a watt at times more than the nominal power.
What is freezing power?
This power, in contrast to all intelligible electrical, is indicated in incomprehensible kg / day. Many mistakenly believe that this is the amount of ice produced by the apparatus. In fact, it is supposed to freeze denser and structurally complex products, so measurements are performed on simulators - special parallelepiped packets with a specially designed composition for such cases. In particular, it includes ¾ water, 1/5 hard-to-pronounce emulsifier, about 1/20 salt and 1/100 antiseptic. Packages are placed in a special way inside the chambers and measure how quickly the liquid freezes and how long it remains at the set temperature. At the same time, the Refrigerators are divided into classes according to the climatic conditions in which they are to work.
