Electric heating boilers
Modern building market offerspotential consumer an impressive variety of boilers. Accordingly, the resolution of problems of heating in the private country house or the usual city apartment ceases to be a "problem of the century." "Backyard" is missing one or the other type of fuel? No problem! You will always be able to find decent alternatives, one of which may be electric heating boilers.
- Electric boilers in autonomous heating systems
- Classification of electric boilers
- TENovye electric boilers
- Electrode equipment
- Electric boilers on resistive and inductive elements
- How to calculate the required capacity of the boiler?
- Purchase and maintenance: everything is relative
- Electricity or gas?
- Electricity or liquid fuels?
- Electricity and solid fuels?
- Electric boilers - reviews
Electric boilers in autonomous heating systems
Electric heating, no doubt - one of the mostenvironmentally friendly ways to "warm up" their homes and do not pollute the environment of harmful "castings." Double-circuit electric heating boilers - like personal miniboiler, because they are not only heated room, but also "give" hot water for domestic use.
Electric boiler can be a majorheat source in your abode, and "partner" for the other boilers - gas, diesel, solid. The presence in the system of another reserve unit, capable of operating on liquid or solid fuel cheap - one of the ways to save energy.
How in this case, the heating process is carried out?
- heated rooms of the building initially warmed up using the backup boiler;
- electric boiler (automatic mode) supports the required temperature.
Produced in the equipment wall and floor version. First power ranges from 5 to 60 kW. Devices with output of more than 60 kW may only be floor.
"Eat," they are from a single-phase or three-phase mains (220 V and 380 V, respectively). For the operation of the equipment, consuming more than 12 kW, use a three-phase network.
Heat carrier in the boiler serves water or non-freezing liquid - antifreeze (of course, allowed for heating systems).
Note! equipment manuals - extremely useful thing. Timely reading it will help you avoid misunderstandings.
Classification of electric boilers
Electric boilers differ between a method of heating the coolant. Their main types:
- Indirect heating: the heating element - resistance cartridge (PETN). It is installed in the tank, the heat exchanger;
- direct heating - Electrode water-heating boilers, electric. The current passing through the water and releasing heat, heats it;
TENovye electric boilers
The principle of operation of this equipment is based on"Conversion" of electricity into heat by means of electric heaters (tubular heaters), mounted in the tank (steel) heat exchanger. Heater heats the coolant that circulates in the heating system and the heated room.
Control of the adjusted work unitcarries out the control unit. Heating is controlled by the room temperature regulator: it responds to the lowering of the temperature signal of the need to turn on the heating mode. Coolant required operating pressure is achieved by means of a circulation pump. Internal temperature sensor supports temperature of the coolant. Upon reaching the required indoor temperature values, the heating mode is turned off, and then, after some time, and switches off the circulation pump, which is carried out through the "movement" of coolant.
Using room thermostats can save from 20% to 30% of electricity.
The main advantage of this type of boilers -no electrical contact of the fuel element and the coolant, respectively, the leakage current is virtually absent, which means that along with them, you can use the emergency automation, for example, an RCD (residual current device), etc..
Their thickness does not depend on the naturecoolant, its temperature - it changes only within the voltage fluctuations in the mains power supply. It is easy to implement step (electronic control system) or modulating control (microprocessor control unit).
These generating sets are of course some disadvantages: heaters resources are limited, and even their premature burnout is not excluded. When purchasing be sure to pay attention to the possibility of their replacement.
In addition, TEN - "the perfect place" to scale, like a thirsty withdraw the device from the system as soon as possible.
It is necessary to take measures to reduce the hardness of the water!
TENovye units - are electric combi boilers and single-circuit devices. Turbofan electric boiler - it's heating and hot water.
Usually, because of the low weight and modest dimensions are wall-mounted version, but there are powerful floor model.
This is the most common type of electric boilers.
Electrode hot water electric boilers are much less common TENovyh.
Heating water in them is due to the allocation ofheat generated when a current is passed "through" heat transfer medium (wire) directly, without the involvement of "intermediaries" such as PETN. Electrolysis occurs: cathode and anode are constantly changing places (50 Hz). The vibrations of the ions occur with the release of energy that the coolant absorbs successfully.
Electric heating boiler that operates on the principle that allows you to save up to 40% of electricity.
Dry running can damage the unit; scale deposits does not cause destruction of the electrodes: a possible reduction in the power boiler.
Dimensions for the ionization chamber compact -heat transfer fluid is heated almost instantly; pressure increases, reaching a required value without auxiliary machinery such as a circulation pump.
Electrode type boiler has a high (96%) efficiency, reliable and durable.
Disadvantages of the equipment:
- inability to connect to the network through the RCD;
- coolant can act only specific, designated by the manufacturer, antifreeze;
Electric boilers on resistive and inductive elements
Such boilers - some exotics. Resistive heating is somewhat reminiscent of the electrode, but it has a number of advantages, in particular, it allows you to work with any coolants. Thermal barrier (heating layer - base) is absent, respectively, it is possible to optimize the model capabilities while reducing power consumption by it.
The resistive boiler fuel elementuniformly distributed over the surface of the heater - it is not in contact with the coolant. It is made of a metal pipe with an insulation layer, on which a helical resistance layer (preferably tungsten). The electric current heating flow capacity (trumpet), and heats the coolant.
Boilers, which implemented the principleelectromagnetic induction, are also worthy of consumer attention. This setup is similar to a transformer, which consists of two circuits, the design. Primary circuit - magnetic system, and the secondary - a heat exchanger. There, under the influence of the alternating field, induced currents causing heating which subsequently transferred to the coolant. The main advantages of induction boilers - electrical work with virtually all coolants.
Among the shortcomings - relatively high price, a lot of weight, impressive dimensions.
How to calculate the required capacity of the boiler?
You can use elementaryrelation to each 10 m? room (with a ceiling height of about 3 meters) takes approximately 1 kW. Although, it should be noted that the approximate formula, because apart from the height of the ceilings and the area to determine the required power affects weight related factors: the materials used in the construction of houses; the building is insulated; the number of windows, the size of the add; region of residence.
Purchase and maintenance: everything is relative
Consider all the costs in stages, which"Cause" you purchase, installation and operation of the electric machine, and compare this type of heating equipment with other proposals on the construction market.
Electricity or gas?
The fact that gas is cheaper than electricity, as they say,clear and hedgehog. If there is a gas pipeline, the choice becomes obvious nearby building (the house). But remember that in addition to the cost of energy, there are still many aspects that need to be taken into account:
- the cost of equipment - "average" electric boiler cheaper gas analogue;
- the cost of installation - installation of electrical equipment and much cheaper;
- electric device constructively simpler and does not require, in contrast to the gas, a constant maintenance;
Electricity or liquid fuels?
Electric Cost, of course, somewhat higherLiquid fuel value. In the case of electric boiler you will only need the boiler itself, while a liquid fuel will have to buy more and more "accessories." As for installation, maintenance, and design features, everything here is similar to the gas device.
Electricity and solid fuels?
Automatic operation, easy to maintain the required comfort temperature - the main advantages of electric boilers to solid fuel counterparts.
Sharing electric and solid fuel boilers - are quite common "union".
Electric boilers - reviews
Most people refuse electric boilers for obvious reasons. Firstly, space bills. Second, network disruptions.
But at the same time, users will notice a lot of indisputable advantages of this equipment:
- low price;
- easy installation;
- saves space in the room;
- ease of operation;
- there is no need to install a chimney;
- do not require special care, cleaning;
- do not create a foreign odors;
- no harmful emissions.
After weighing all the "pros" and "cons", you will definitely be able to find a suitable home for the monastery type of heating, which would fully meet all your needs, and most importantly - financial opportunities.