Classes of energy efficiency of machinery, buildings

In the European Union it was decided that the instructions for the operation of household appliances, cars and buildings should contain information that allows the buyer to determine the energy efficiency classes of these facilities. This contributes to a clear understanding of what the main consumer properties they have. Therefore, when buying a person can compare different models among themselves and choose the most suitable. Classes of energy efficiency are denoted by Latin capital letters from A to G. Accordingly, less energy will be consumed by class A, and most of all - G.

Definition

Although a common scale was created to denote energy costs, each of the objects (buildings, appliances, cars) have their own characteristics and general criteria. For example, a refrigerator that has a class A ++, will consume about 27 watts per hour, and a washing machine with the same class will wind 860 watts for the same time. This confirms that in the question of how to determine the energy efficiency class, one must take into account that different categories have their own standards. The same applies to houses and cars, because they relate to other objects.

Energy efficiency of the refrigerator

The attribute of any modern kitchen is a refrigerator. Quite often, choosing this device, the future owner and does not think about how much it is economical in terms of electricity consumption. And in our time it is very important. The energy efficiency class of the refrigerator is determined according to the generally accepted scale described above. By the way, speaking about this, it is worth mentioning that since 2003, there have been added two more classes - A + and A ++, the latter is considered the most economical.

Calculations that are conducted before assigning a product to a particular valuation are quite complex. Here we take into account both the temperature in different chambers, and their volume, and the presence of any innovations. It is not difficult to guess that the larger the refrigerator, the more it will spend electricity, but this does not mean that it will have a low class. After all, in his "weight" category, he can be economical. To find out this is easy enough, because the product is often glued sticker, which carries this information. In addition, there indicate the name of the model, the volume of each camera, the temperature regimes, the energy consumption per year and, if the manufacturer so desires, the noise level. Of course, this is all present in the instruction manual.

Tips for saving energy

In order to save, it is enough to observe several rules that will not only prolong the life of the refrigerator, but also make you forget about energy efficiency classes for a little while. Here are the main ones:

• What was said back in childhood - put in a refrigerator hot can not. The temperature of the dish should be at room temperature, since the energy required to cool the boiling water is quite substantial.
• Open the door only if necessary. After all, if you open the refrigerator for a long time, it will be filled with warm air, which needs cooling.
• The refrigerator should stand away from objects that are often heated (radiators, stoves, cookers). After all, heat will be transferred to this device, which will lead to unnecessary expenditure for cooling the case.
• The temperature of the freezer should not stand at a maximum unless the products present in it are designed to be stored for a very long time. Each degree will save about 5% of the consumed electricity.

Energy efficiency of washing machine

Most often when choosing a washing machine, consumers pay attention to its design and capacity, completely forgetting about energy efficiency classes. Other important indicators are washing and spinning classes, which are evaluated on the same scale. As far back as in 1992, the norms of electricity consumption by this device for 1 kg of laundry were determined in the European Union. Therefore, on all products of this line there are stickers that clearly indicate to the buyer the economy of this model.

If it is class A +, then the washing machine should not spend more than 0.17 kW per hour for 1 kg of clothes. The lowest estimation is possessed by devices which "pull" more than 0,39 kW per hour for 1 kg of washing. This figure is determined on the basis of a cycle of washing in cotton mode at a temperature of 60 degrees.

Saving is easy

As in the case of a refrigerator, the washing machine spends a lot of electricity, so you need to know how to save on this device. The first thing to understand is that a large size is not always a good thing. Buying such a device, we should pay attention not only to the energy efficiency class of equipment, but also to the volume of the drum. If the family consists of two or three people, then it will not need a car with a maximum load of more than 3 kg, if from four to six - no more than 5 kg of loading, more than seven people - 6-7 kg of loading will do. This will help to avoid unnecessary costs.

The second rule is to load the drum completely, and not to wash one thing. The third advice is to choose a program that would not be very long, but the result would be good. This includes the temperature regime, because it is the heating of water that spends most of the electricity. Therefore, do not always turn on at 90 degrees, since the powder completely dissolves already at 40.

Energy efficiency of the dishwasher

Another popular device, which greatly facilitates the life of each hostess, is a dishwasher. It saves at least 7800 liters of water per year, because it uses the same water several times. Like any other technique, it has a sticker that shows the energy efficiency class. At home or in the store it can be studied. Such a label will tell you how this device is economical, what kind of model it is, how many dishes can be loaded here, and how much water will be used.

The energy expenditure class is calculated based on how much electricity is required to clean one set of dishes. In addition, often this technique is quiet enough to work, which allows you to use it even at night.

Small secrets

As in previous cases, there are secrets to using a dishwasher, which will reduce the payment of bills. For example, you should download this device if possible so that there is no free space left. But if the dishes are a little bit, then it's better to use the half load mode, if there is one. He will save both water and electricians. Also, the dishes should be cleaned of large remnants of food or other contaminants, and only then shoved into the machine.

Energy efficiency of air conditioners

When the heat in the street is unbearable, I want to hide somewhere in a cool place. In this person helps the air conditioner. In summer, it cools the air, and in winter, on the contrary, heats up. But do not forget that the class of energy efficiency of air conditioners is just as important as their magical abilities to save a person from overheating or freezing. The EU Directive clearly specifies what a label should be for these devices. For their categories, different classes were created, which are defined:

• A variety of operating modes (only cooling or there is also heating);
• The type of cooling (water or air) installed;
• Configuration.

Each of these indicators affects the class. For example, heating mode significantly increases electricity consumption.

Computer technology

The main achievement of the 21st century is the very rapid development of IT technologies. Each family has long got a computer or a laptop and uses it daily. Therefore, it is worth considering how this technique is economical, and how it affects the monthly budget. The energy efficiency class of the computer is not regulated anywhere, but everyone knows that the newer the technology, the less it costs. After all, each component of the processor consumes a certain amount of energy, which entails certain costs. Also, the class of energy efficiency of a computer depends on whether it is stationary or it is a small portable laptop.

In the first case, studies showed that an office PC spends an average of no more than 100 watts per hour, a home PC - up to 200 watts per hour, a gaming - 300-600 watts per hour. These figures may vary depending on how heavily loaded the device is. But we can say with confidence that the most economical office equipment. The energy efficiency class can also vary among laptops. It depends on the age and workload of the system, but the average value is 50 watts per hour. Therefore, from the point of view of economy, the latter option is more profitable. Moreover, it is practical and takes up much less space.

To reduce the amount of electricity consumed, you need to play less in "heavy" games with high-quality special effects, do not include a bunch of unnecessary programs at the same time, do not increase the brightness of the screen to the limit point, but simply reduce it to a comfortable level.

Printer

Another device that densely entered our house with a computer is a printer. It is very convenient, because a lot of students and working people constantly have to print something. Everywhere there was a bunch of shops, in which it is done for a fee. But this is not always convenient, because early in the morning or late in the evening they do not work, and print at home is much cheaper. When you select this device are guided by its multifunctionality (printer, scanner, color and black and white printing). The energy efficiency class of the printer is rarely taken into account, which is not correct. Although it is not regulated anywhere, like with other computer equipment, it is still worth paying attention to, then there were no unpleasant surprises.

The exact answer to the question, how much consumes electricity per hour printer, can not be given, because each model will differ from others. The necessary information can be found from a special label or instruction manual. But there are average data on the costs that make up for a laser printer - 2-3 kW per hour, for a jet printer - up to 150 W, but these figures are very approximate. To save on this device, you need to disconnect it from the network, if the printer is not needed now, since even in the standby mode it can reel a considerable amount of electricity, it is better to turn it off.

Lamps

The thing that no civilized house can do without, is a light bulb. It would seem that it can be simpler. But even here there are energy efficiency classes of lamps, which must be indicated on the packaging. Usual for us is the power of 75 and 100 watts, but it is considered very expensive. Instead of such devices it is better to purchase lamps, the class of which will be the highest. They have the same level of brightness, the flow of light is not worse, and they serve much longer. Their high cost fully pays off and even provides savings, which is important.

Building

Another very important area in this area is the energy efficiency class of the building. How to define it, and what does it mean? There are several criteria by which homes are classified in one class or another:

• The difference in the values of actual and normatively indicated indicators, which show the energy consumption for ventilation and heating.
• Type of building, materials from which it is built.

The energy efficiency class of a building is assigned after verification and comparison with reference values. Based on this, a special passport is issued to the developer or owner. The energy efficiency class of a building is estimated on the same scale as household appliances, that is, from A to E, where A allows for less than 45 percent deviation from the norm, and E for more than 51 percent.

Bitter experience shows that most high-rise buildings have a very low economy. The first reason for this is the age of the building. After all, many buildings were built in the time of Khrushchev. Therefore, it is worth considering that if you change windows and insulate the walls, then the energy efficiency of the house will grow at times. But not everyone is able to afford it. New buildings, which appear from year to year, should already have a high class. After all, they are built in accordance with European standards, which oblige to increase the energy efficiency class of the building. How to determine if this is actually happening? When buying an apartment it is necessary to request a technical passport for the house, where all this will be indicated.

Thus, energy-saving technologies have become very fashionable lately. But this is not a whim, because saving in a difficult economic period is very important. Therefore, before buying anything, it is worthwhile to find out which energy efficiency class the object belongs to.