The economic calculation of the payback and economic efficiency of energy-saving (fluorescent) lamps.

In Russia, every year more and more is not enough electricity. It is becoming increasingly difficult to obtain permission to connect industrial facilities and private households. According to the forecasts of power engineers, the doubling of electricity generation will occur no earlier than in 15 years. Therefore, electricity prices are constantly growing and will strive to reach the average European - 9 rubles / kWh.

However, there is a fairly simple way to achieve energy savings and reduce the cost of its purchase ...

Calculations and miscalculations of the economy based on statistical data.

Electricity consumption growth in Russia is taking leaps and bounds. With the current generation of 210 GW by all types of power plants, it is still not enough. An increase in production of only 1.5 times, to 350 GW, is planned only in 2020.

But there is an opportunity to increase the equivalent power generation in just six months. At the same time, loading their enterprises, idle in a crisis, therefore, reducing unemployment.

What is this way? Let's consider everything in detail. According to experts, 80% of the generated energy can be saved through energy-saving technologies .. This is 210 x 0.8 = 168 GW. For comparison, the largest hydroelectric power station in Russia, Sayano-Shushenskaya, produces 6.4 GW. And that was before the accident ...

Making a shiny silver or gold plating is not very difficult technically, other difficulties may arise here: it is not easy to get gold compounds. And silver compounds used in electroplating are poisonous: they are mainly cyanide compounds.

Therefore, it is better to make a nickel coating in an electrochemical way. On the surface, you will immediately get a shiny layer of metal (sparkles no worse than gold!), Requiring insignificant machining. The electrolyte should be of the following composition: nickel sulfate 280-300 g / l, nickel chloride 35-45 g / l, boric acid 30-40 g / l ...

The automobile company Renault has announced that in the near future it will release two models that will please fans of green cars. More precisely, it will be electric vehicles that will be assembled on the basis of the popular Kangoo and Fluence models.

The Fluence model was marked Z.E., the platform of the new sedan was extended by 130 mm. A powerful electric motor is installed in the car, which will make up the company 250 kilogram lithium-ion batteries.

But the engine power and the speed that it can squeeze out will pleasantly surprise and, moreover, it can create not bad competition for gasoline ...

Manual for the manufacture of a homemade electric generator 220/380 V.

Those who often leave the city know that a complete lack of electricity or its frequent blackout is not uncommon. People struggle with this by buying gas generators or kerosene lamps and stearin candles.

But there is another way. Motoblock, for plowing and cleaning gardens, has become a national hit. Experience has shown that it can be adapted to generate electricity. As a generator, you can use an asynchronous electric motor, for example, the AIR series. The electric motor must be with a rotation speed of 800-1600 rpm and a power of up to 15 kW ...

Circuit-breaker circuits allow turning on and off lighting from two or more different places for their installation. In some cases, this is not only convenient, but also very necessary.

For example, there is a long corridor. It is naturally lit.Turning on the light at the beginning, and having this very scheme of connecting the passage switch, you do not have to return again to turn off, but you can do this with the second switch that is installed at the other end of the corridor.

Let's take a closer look at this wiring diagram, consisting of two loop-through switches. It will require two switches (they are also called “walk-through”), each of which has three contacts and two switching positions. Moreover, the switching mode must be of "cross over nature", that is -one contact is common to the other two.In one position it is closed with one of them, and in another position, of course, with another ...

In almost all houses of the old construction and in most modern houses, the electrical wiring is mounted with aluminum wires in a single insulation. The section of this wiring is most often calculated based on a consumption rate of 1-2 kW. power, which is quite normal for the sixties of the last century, but our contemporaries consume much more.

Let's count. The consumption of a TV is 200-300 W, an electric kettle is 800-1500 W, a microwave oven is up to a kilowatt, an electric heater is a minimum of one and a half kilowatts, etc. That is why the old wiring can no longer stand ...

What awaits you when getting an energy education.

In order to become an energy engineer, one must spend five years in the walls of his native university. If you do not know who you want to be in the future, or your parents cannot decide on the choice of your profession.

I want to give some advice. Do not panic at economists, programmers, and others of this kind. There are not so many energy faculties in our big country, economists at every turn.

And now, if you still decide to choose this particular faculty, then I will tell you a little how the training in this specialty goes ...

The article describes new equipment that allows wind generators to automatically adjust to air flow.

It would seem that collecting wind energy is a simple matter. Air passes through the turbine blades, causing it to rotate. The turbine drives the generator. A generator produces electricity. But, in fact, not everything is so simple.

Wind generators without fail are installed in the area where storms often rage. A strong wind can damage or even destroy air turbines if they are at the wrong angle. They should be fine-tuned so that powerful gusts rotate, not destroy the blades. Such adjustment is a common thing in working with turbine equipment.

This process can greatly facilitate the technology created Torben Mikkelsen and his colleagues from the Danish National Laboratory of Sustainable Energy Sources Risoe DTU. Dr. Mikkelsen is working on a system that allows each generator to scan upwind and pre-adjust the blades ...

Any leak is an undesirable occurrence. In the normal mode of operation of any electrical system, the current should flow only along the electrical circuits relative to the phases and zero (figuratively speaking). The resulting current relative to the ground will be this same leak. It can occur as a result of a breakdown on the case, which is initially grounded, if a person accidentally touches a person carrying parts (leakage current will pass through the body of this person), obsolescence of the wiring, etc.

The best option for connecting an RCD (residual current device) is the maximum proximity to the power input.Since the gap between the electric network and the electric meter is subject to strict control of electric power organizations, it is nevertheless more correct to install an RCD immediately after the electric meter. This ensures complete protection against all kinds of earth leaks throughout the circuit ...

Technological advances in the LED industry. What is the secret to the longer life of the new LED lighting fixtures for indoor lighting?

The market for LED technology is growing rapidly and the range is filled with various new products. In general, for LED lighting, this market niche is an unplowed field. After all, the elements themselves, LEDs, are practically durable, mainly due to low heat transfer and low consumption, they work on average 50,000 hours, namely 5 years. This makes it possible to assemble ready-made equipment, where it is not necessary to provide the dimensions of bulbs or the possibility of replacing light elements, so that LEDs can be turned into bulbs, searchlights, lamps, in a free art form and format, you can combine colors, enhance the precision with optical lenses ...

How can a girl replace an outlet on her own.

Even the most fashionable interior can spoil such a trifle as an old outlet. Most often, the hostess notices them last, and changing it is simply scary, because you still have to deal with electricity.

Of course, you can call a specialist, ask a neighbor, and the husband probably understands them. But what to do for a young and active girl who still lives without a husband, ends up working simultaneously with those services that can help, and the neighbor does not cause any trust.

In fact, the devil is not so terrible as he is painted. Of course, we are not ardent feminists, but we can easily cope with such a trifle as a socket. So, step by step instructions for replacing the outlet ...