Knowledge of energy efficiency classes and their differences will help to calculate the future costs of the payment of light. Efficiency rate of electricity consumption has a direct impact on the household budget. Therefore it is necessary to know what the energy efficiency index, its category, which is better to choose the class and model of the device, in terms of savings.
Refrigerator - a major consumer of energy in the house, because it is included in the permanent network. As electricity tariffs increased annually, you need a responsible approach to the choice of cooler models. high-class consumer appliances more expensive, but this is offset by savings in the payment of utility bills.
Class refrigerator energy consumption is calculated as a percentage or conditional indexes reflecting the total consumption of kilowatt hour. Devices using little power in operation, have a lower rate in kilowatt-hours percentage.
The index indicates how much time is required from the network operation freezer or refrigerator to maintain a predetermined temperature. High quality units need to be included with the compressor for about 15 percent of the working time, while refrigerators with low class will load the grid often 5-10 times. The less frequently starts cooling and thawing cycle, the smaller consumed kilowatt.
What are the classes
The layman may get confused in the classification as labeling instructions were revised about ten times. Since July 2014 the new European regulations designate categories of devices shown in the table was adopted:
These indices are applicable only to the refrigerator or freezer. Other household appliances apply other requirements.
The lower the index, the higher class and more economical. Therefore, category A the most energy efficient refrigerators, making such devices more popular.
Classes A, A +, A ++ +++ A
Previously refrigerators classified into marking in the range A-G. The two-thousand years of improved technology and were more economical types: A one, two and three pluses.
Refrigerators, belong to this category, occupy two thirds of the market. However, between a category A are differences in quantity the energy consumed during the operating cycle:
- A ≈ 48,5%;
- A + ≈ 37,5%;
- A ++ ≈ 27,5%;
- A +++ ≈ 22% or less.
Even small differences in the categories in practice give a significant gap in energy consumption. Refrigerators Class A - saving, but in fact the electricity consumption is twice as category A +++.
Classes B, C, D
Categories with average values of efficiency:
- B ≈ 65%;
- C ≈ 85%;
- D - to 110%.
- Category A - 125-300 kW / h;
- Category B - 350-550 kW / h;
- Categories C, D - 600-850 kW / h.
- accommodation near heaters, stoves, radiators;
- Wear rubber seal or door magnets;
- loading the chamber with warm or hot products;
- large temperature difference in the room and the chamber;
- clogging of the drainage system, the accumulation of condensation;
- frequent or prolonged door opening;
- overload the freezer.
Due to the low levels reduced release devices, spending lots of electricity. In the next 10-15 years, these refrigerators will be removed from production, as happened with the no longer produced the classes E, F, G.
Before buying the equipment necessary to compare the price of the device with the expected savings in electricity bills. Payback expensive unit A +++ may last for twenty years, then more practical to purchase a more affordable model of refrigerator. Energy Class B buy impractical: A + or A ++ to be more advantageous.
How much power does the refrigerator in kWh per year?
Refrigerator is plugged in all year round - it is the only appliance that needs a continuous supply of electricity. The greater the refrigerator, the more air and products in the chamber to be cooled. therefore bulky devices consume a lot of electricity.
To determine how much light the refrigerator consumes, you need to know the technical parameters: the maximum load current, or peak power. This information is written on a label or on the back of the machine.
If the technical documentation is lost, but we know what energy efficiency class in the refrigerator, it is possible to calculate the estimated electricity consumption per year:
To count the money spent, it is necessary to multiply the rate of energy consumption at the current rate. Example calculation for energy saving unit category A ++ looks in Moscow:
135 kW / h × 5,38 rub. = 726 rubles. 30 kopecks. in year.
A refrigerator type B for the same time spend electricity for 2700 rubles, with a difference of almost four times.
Once known only to the current machine load, you first need to calculate the power: voltage multiplied by current. Example for an average unit in the B category:
0.9 ampere × 220 = 198 watts or ≈ 0,2 kW.
On average, a quarter of the compressor running time, then a day electricity consumed six o'clock:
6 h × 0,2 kWh = 1,2 kWh / h for 1 day.
Multiplying the number of calendar days and the tariff, you get 438 kWh / year or 2356 rubles for the capital.
The calculations are suitable for standard operating conditions. The device can use energy more intensively under the influence of external circumstances:
These factors cause frequent activation of the compressor than increasing energy consumption. Volume chamber has a direct impact on energy efficiency.
To minimize power consumption, you need to choose a model of class A and take into account the dimensions. For a small family spacious refrigerator is not necessary - let cameras will be in vain to spend energy. Still it is possible to change the light bulb inside the housing to fluorescent or LED. This further reduce the expended electrical power.
To condenser rarely turned on, you can not install the refrigerator close to the walls. The engine will be less work if regularly monitor and eliminate freezing walls, drainage blockages and damage the seal gum.