Recently, the method of heating their homes with electricity has become increasingly popular. This is not surprising, since cheap heating of the house with electricity has won the trust of citizens. It is usually used in places where there is no central gas pipeline. At the same time, it is possible to significantly save on payment for electricity, if you understand how to organize it and what equipment to use.
Direct and indirect heating systems
Type of heating, in which the main source for heating is electricity, is considered promising. But before you replace the already existing heating, you need to understand the following:
- what option is suitable for your home;
- what budget are you willing to invest to save in the future;
- What is the power source of electricity already in the house.
These factors will determine the choice of heating system.
Direct heating is implemented through the use of electric heaters: convectors, underfloor heating, electric oil radiators. Using this option, there is no need to lay pipelines, install the boiler, buy radiators. All devices are connected independently to the cabling. The temperature in each heater is regulated separately, which makes it possible to control electricity consumption.
Important! Using direct heating is the most expensive method of heating. The advantages of such a system include savings on capital (equipment cost) and operating (repair) costs.
Cheap home heating with electricity is indirect heating. It lies in the fact that the classic water heating remains the same; it simply replaces the coal or gas boiler with an electric one. They come with the following types of heating:
- inductive – economical option, here the heating is carried out due to the high frequency current (radio frequency waves);
- electrode or ion exchange – in this type of heating open electrodes are used, to which current is supplied (50 Hz);
- direct – the water is heated through the heater. This type consumes much more energy and also fails faster, however, the cost of such a boiler is several times less than that of the unit with inductive or electrode heating.
The advantages of an electric boiler include:
- small sizes;
- low cost;
- quick installation;
- operational and environmental safety;
Helpful advice! Although the prices of induction boilers for heating a private house “bite”, the power consumption in such models is one of the most economical. To really feel the savings and see it in the bills for electricity, it is desirable to install a three-phase boiler.
Not to be unfounded, we give a clear example of cheap home heating with electricity using a boiler. Calculate the real savings for a house with an area of 100 m ?:
- The electric boiler almost always gives efficiency of 100%. On average, 1.03 kW of electricity is consumed per 1 kW of thermal energy.
- According to the approved tariffs, in the Moscow region for 2016 for consumers (population) the tariff with a single rate is 3.18 rubles.
- The coefficient of heat consumption for heating 10 m? is equal to 1 kW, in our case it turns out 10 kW of heat for an area of 100 m ?.
- The average daily consumption of electricity is 1 kW per hour, therefore: 10 kW x 24 hours = 240 kW.
- Under the condition of continuous operation of the boiler for a whole month (which is unlikely), the cost of a kilowatt will be equal: 240 x 30 = 7200 kW.
- In a month, you must pay for the used heat: 7,200 kW x 3.18 rubles = 22,896 rubles.
It should also be borne in mind that in practice electricity consumption is halved, since the electric boiler, heating the room, turns off and stops consuming electricity. On average, for heating with the use of electric boiler will have to pay about 12 thousand rubles.
The choice of the boiler should be taken responsibly, because you need to take into account all the nuances concerning the electrical maintenance of your home. Power lines are not always able to cope with the load that rises after installing the boiler. To avoid such problems, visit the department of energy supply to which you relate, and specify (or ask to calculate) the maximum power that they can provide. When calculating the required kilowatt do not forget about household appliances that are in your home.
The electric boiler is quite simple: it contains a heat exchanger and a control and adjustment unit. There are retrofitted models that are equipped with an expansion tank, filter and pump.
Electric boilers of small capacity are used for heating of private houses: single-phase and three-phase.
A single-phase boiler is considered to be operating from 220 V. It is easy to connect it, since all the houses are equipped with the necessary voltage. Power of the device varies from 6 to 12 kW. It is advisable to use such a boiler for an area not exceeding 100 m ?. Features of an electric boiler for home heating (220 V):
- works on the principle of a water heater (boiler, kettle);
- to operate a normal network (220V);
- To install it, you do not need to get special permission.
The three-phase boiler is more powerful than the single-phase boiler and is suitable for installation on an area of more than 100 m ?. In order for the network to withstand the load during the operation of the boiler, they are produced three-phase, that is, they are connected to the network of 380 V. Features of the three-phase boiler:
- powerful. It is necessary to take into account the heated area. At 10 m? 1 kW + 10-20% is required (for stock);
- works from three phases (380 V), it is necessary to increase the power supply current in the house;
- It is necessary to obtain a special permit in the energy supply to increase the power consumption and the installation of the boiler;
Electric boiler for heating a private house, prices and types. Features electric boilers for heating a private house. Calculation of power and connection of electric boilers.
- The rated current, which should be in each of the three phases, varies from 6.1 to 110 A. This indicator affects the choice of the circuit breaker, the wiring, its cross-section (the permissible values are shown in the table below). Proper selection of the necessary elements will eliminate the possibility of fire.
Table “Values of cable cross-section and current of automatic circuit breakers”:
|Boiler power (to the specified value)||The value of the current circuit breakers for single-phase boilers||The value of the current circuit breakers, for three-phase boilers||Cable section for single-phase boilers||Cable section for three-phase boilers|
|4 kW||25 A||4.0 mm?|
|6 kW||32 A||6.0 mm?|
|10 kW||50 A||10.0 mm?|
|12 kW||63 A||16.0 mm?||2.5 mm?|
|16 kW||32 A||4.0 mm?|
|22 kW||40 A||6.0 mm?|
|27 kW||50 A||10.0 mm?|
|30 kW||63 A||16.0 mm?|
|45 kW||80 A||25 mm?|
|60 kW||125 A||35 mm?|
Important! If we compare the work of single-phase and three-phase boilers, then the cost of heating using single-phase models is slightly higher than that of three-phase ones.
Whatever boiler is not installed for cheap home heating with electricity, in any case, it is necessary to provide a backup heat source.
The operation of the boiler on electricity may be interrupted due to a power outage, line failure, breakage or short circuit of the wires, so the use of a combined boiler (wood / electricity) will not leave you without heat in the house.
The boiler for heating with wood and electricity – is a reliable, versatile, functional unit, through which you can provide a constant heating of the house. This boiler can operate on solid fuel (firewood, briquettes, wood waste), and on electricity simultaneously. Such multifunctionality is possible due to well-designed unique equipment design.
A distinctive feature of the combined boiler is the presence of heating elements. Firewood for firewood is located in the bottom of the unit. When wood is burned, thermal energy heats the coolant and the heated liquid (water) is sent to the water heating system. Such boilers are equipped with devices that are responsible for the automatic on / off of the heating element, depending on the temperature of the coolant. When the wood burns and the heat in the furnace decreases, the water temperature drops, the heating elements turn on in the work, and the boiler, consuming electricity, maintains the set temperature. All manipulations occur due to automatics.
The power of heat released during the combustion of solid fuel is 25-35 kW. This power is enough for heating the room in 100-120 m ?, and the heating element is used to maintain a stable temperature in the house. Combined heating systems are especially popular in the private sector, since cheap fuel is used to heat a room. Thanks to the built-in heating elements, it is possible to vary the heating mode.
The main feature of a double-circuit boiler is the simultaneous implementation of two functions: home heating and hot water heating.
The main advantages of such equipment:
- compact size;
- easy to install;
- not difficult to manage.
The double-circuit electric boiler is compact and very convenient for use in a private house or apartment. Such boilers save space significantly and do not require frequent maintenance. The double-circuit boiler does not need to arrange a separate room – it can be placed on the wall, which will save usable space.
Two-circuit models of electric boilers have two independent specialized circuits – heating and water heating. The unit contains the following elements:
- a heat exchanger that acts as a boiler;
- air vent;
- safety valve;
- expansion tank;
- a heating element;
- sensors (automatics);
- circulation pump.
Such equipment is designed to convert electricity into thermal energy through the use of heating elements. Tubular electric heaters (heating elements) are installed in the heat exchanger, and the heated fluid is circulated using a special pump.
All actions are performed using automation. The regulator, when the temperature in the room decreases, sends a signal to connect the heating mode, and the pump starts to work, creating the necessary pressure in the thermal carrier. When the required parameters are reached, the equipment blocks are gradually disconnected.
The price of a double-circuit electric boiler for heating a private house depends on many factors. To the main should include the brand manufacturer. European technology is expensive compared to the Russian, but its cost is much less than gas equipment.
The heating system using electrode boilers is fairly new. To warm up the electrodes are placed directly in the water. In the process of supplying current, there is a potential difference in water, and the ions begin to move actively. When they move, a lot of heat is released, which heats the water in the coolant.
Here are some reviews about electrode boilers for heating a private house:
“In our village there are always problems with electricity, the current strength is unstable, sometimes it drops to 180 V. Gaza in the village does not exist. They used the boiler on the wood for a very long time, but problems arose because they had to be constantly thrown up, and during the day time everyone was at work. A friend advised electric boiler. I thought for a long time which one to take, the choice fell on a boiler with ion-exchange type of heating, because it withstands voltage drops while continuing to work. ”
Valentin Chutuev, Moscow region
“They built a house in the private sector, they left the apartment to the children. When heating was done, they immediately decided to install an electric boiler. Children bought an electrode pot. At first I was indignant that it was expensive – it could be cheaper to find, but when we went to visit the children for the weekend, the battery burst out of us, all the water leaked out, and the boiler simply stopped working – did not break, did not burn, just turned off. That’s when I did not regret the money spent. ”
Valentina Petrova, Volgograd
“I decided to supply cheap electric heating for the house. The best that I found is an ion boiler, it is 30% more economical than a heater. The whole trick of saving lies in the fact that this boiler immediately directs energy to heat water, while a boiler with heating elements spends part of this energy to heat the heating element itself. ”
Peter Korneev, Surgut
From the reviews it can be seen that electrode boilers can operate under unstable voltage conditions (at current surges up to 40 kW), do not fail, if for any reason there is no water in the system, and they are the most economical in the range of electric boilers.
“An electric boiler was installed at the dacha – it is just a miracle technique. As we arrive, we turn on – the room heats up very quickly. Earlier, while you put firewood on, melt it, it was very cold. Immediately arrived, the temperature was set and, as long as things moved out of the car, it was already getting warm in the house. And the most interesting thing is that we don’t pay much for the light. ”
Anastasia Kuzmina, St. Petersburg
“Electric boiler is a thing. Especially if it stands with a dual-zone counter, then the savings are palpable immediately. We switch on more power at night, when the tariff is cheaper, and during the day we fasten it a little ”.
Valentin Yudkov, pos. Vlasikha
Visiting the forums and reading the positive reviews of the heating of a private house with an electric boiler, it can be concluded that there are no dissatisfied electric boilers.
Thus, heating with the help of electricity is an affordable, economical and modern form of heating a dwelling. At the same time, it is possible to install an electric boiler not only at the dacha, but also in urban houses and apartments, which significantly reduces the expenditure of funds for the monthly payment for heating.