Solid fuel boilers, despite the obvious advantages and disadvantages, have another hidden aspect that has to pay attention to the time. system heating on solid fuel boilers with manual loading mode does not work in the maintenance mode. It ended in the furnace fuel - boiler stops working, respectively, the coolant begins to cool. This problem is well known to residents of the private sector and the owners of country houses.
Constantly toss coal or wood, filling the furnace, it is not always possible, and the boiler stops the winter is fraught with a sharp decrease in temperature in the living spaces.
A better option would be to prevent such a situation, the heating system in which electric boiler attached to solid fuel boiler.
Functions in the solid fuel boiler electric heating unit
Connecting an electric boiler in conjunction with a solid fuel heater is quite common engineering solution. Such an embodiment eliminates the likelihood of cooling of the heating system, prevents overcooling of the heater core and keep a comfortable temperature in the house. Electric boiler often acts as a backup heater, whose purpose is to equalize the temperature of the coolant in the heating system.
Operation of solid fuel boilers require periodic monitoring man - to load the fuel needed by all models of such units.
On a note: for traditional boilers downloads can be up to 2-6 times per day. Otherwise, the situation with prolonged pyrolysis boilers and combustion units. Here frequent human intervention is required. One fuel loading is enough for 12-24 hours of operation of the boiler, and for some models - and at 48 hours.
The main task for the home owner when the heating is to prevent the cooling of the boiler and heating system. Electric boiler paired with Boilers successfully solve this problem. We consider in detail bunch solid fuel boiler with a heating device running on electricity.
working scheme as follows: a solid-aggregate 50 kW must be combined with an electric boiler with a capacity of 28 kW. The work of the electric heating device - periodic. The unit must be in the wings - to be ready to be included immediately after the stop of the main equipment. Electric boiler is started when the fuel in solid fuel boilers end, and the coolant temperature in the system drops to 50 0FROM. In this case, the circuit must be present a water tank for hot water supply system, performing in this case the role of heat storage.
The main circuit elements, power consumption of autonomous boilers are:
- radiators - require 30 kW;
- heating system "warm floors" - of up to 15 kW;
- storage tank for domestic hot water - an average of 300 liters.
Attention! Automatic adjustment of switching circuits in this situation - a bunch of units are required.
Electric boiler, working together with the accumulator tank, are a group that prevents entering the primary heating unit with a temperature of the coolant, falling below the critical mark 50 0FROM.
Installed in the pump system periodically coolant through conduit chase, signaling the temperature in the heating circuit. When lowering the temperature of the coolant to a critical level electric boiler provided with heating elements, it is included in the job, taking on the task of heating the house. Thermostat threeway valve and tank temperature control provide hot water. By reducing the water temperature in the domestic hot water heat transfer medium circuit runs to the coil for heating hot water. Properly connected electric boiler, competent harness with solid fuel boiler, make your system completely controlled.
In the described heating system design all heating equipment, including piping, while stopping the main the heating device is reliably protected from freezing and does not cause disruptions in home heating and hot water supply.
Combined heating boilers
Another, less expensive embodiment, is the installation of the combined unit, which is a solid fuel boiler, and an electric machine at a time.
Such devices are used for heating the heat carrier solid fuel and electricity, being designed for interchangeability of energy during operation. The peculiarity of such units is to install the tank solid fuel boiler electric heating elements - heating elements provided the necessary heating of the coolant flowing through the heat exchanger. The idea to combine the electrical device with the solid unit is not new, but to start production of the corresponding heating equipment became possible only after the emergence of combined devices of automation and new materials generation.
The principle of operation of the combined heating mechanisms is that as long as the combustion chamber free of primary fuel (wood, coal, peat, etc.), a basic operation to heating of the heat carrier for performs heating electricity. Due to the installed sensors monitoring equipment alone responds to changes in temperature, turn on and off as needed.
In practice, it looks like this: Fuel tab is completely burnt, respectively extinguished boiler. Boiler water respectively begins to lose its temperature. In place of solid fuels comes electrically heated. Now the heating mechanism operates as a conventional electric boiler as long as the insert is not the next batch of wood or coal is filled.
After the release of the main unit to the optimum mode of operation, the control unit disables the electric heating elements, heating running again on the solid fuel.
Advantages and disadvantages of the combined heating equipment
Despite the high cost, combined boilers have undeniable advantages. These include not only complete control over the state of the entire home heating systems, but also a number of others:
- the device copes with his work, otaplivaya premises with low energy consumption;
- combination boilers are environmentally friendly heating units;
- absence of condensate, since the first heating device is carried out in both modes - main and auxiliary;
- the entire heating range is always in working condition, which is important in long-term absence of owners of the house.
However, there are disadvantages to this technique.
Significant disadvantage for combined heaters are volatile. When a power failure, the system loses its effectiveness and versatility.
Important! When installing the equipment necessary to take into account the potential of home wiring, which can not be calculated in the power of the installed equipment. The presence of small amperage circuit breakers will lead to constant power outages in the house. Before installing, make sure that you set aside for a limit of power consumption is able to satisfy the operation of the heating equipment.
Unlike conventional solid devices whose efficiency reaches 70-80%, the combined products have a lower coefficient of - about 3-5%.
How to achieve the joint work of the electric and the solid aggregates
If you get up before a choice, which alternative individual heating prefer - solid fuel boilers, autonomous electrical unit or bundle of these two devices, the advantages of the latter option. For the installation of the circuit require wiring diagram of both units, similar to the gas-solid fuel heating complex. Competently made rail equipment - a guarantee of efficiency and safety of operation of this equipment.
At the proposed video detail on how and in what way to connect heating appliances for solid fuel together with electrical heating elements
What you should pay attention when installing:
- both devices must have a reasonable power ratio, a heater on carbon or on wood is the main source of heat, however, its power should be twice the power electric boiler;
- Both units are connected in parallel, which provides independent operation of one from the other;
- plant for solid fuels - the primary and is connected to a large loop while elektrokotol responsible for low temperature;
- main heating unit equipped with three-way valve;
- to save energy and ensure the safety of heating, installation of heat storage is required;
- each heating device is set at a certain heating temperature - for equipment for solid fuels operating temperature must be 60-70 0C., while the electric unit is installed in the temperature of 40-50 0C, since due to the presence of water tank for heating water will cool more slowly, and the electric boiler will be started in time with the sling.
Eventually
In each case, the owner of the property itself decides how to organize independent heating system. The proposed solutions will not only eliminate the unpleasant effects of attenuation of the main heater during the middle of winter, but will also provide some energy savings.
The operational efficiency of solid fuel boilers and electrical units in a pair of proven practice - interaction of these devices gives greater comfort and guarantees the reliability of heat supply.
