Solid fuel boilers long burning: what are, how to choose and

Today the market is widely represented solid fuel boilers long burning of Ukrainian production, as well as Russian and foreign countries. What are these products, how they are generally arranged and work - we will look at this article. In addition, we will try to figure out what option is best to acquire in a particular case.

First, take a look at the most important point.

The principle of operation of most of these boilers

To begin with, it is worth remembering how conventional furnaces work - fuel is put into the combustion chamber, which burns as if from bottom to top. That is, the flame begins to affect the wood from the lowest point of the bookmark, and thus it very quickly covers the entire volume of the bookmark. It turns out that with such a scheme of burning wood burn through as quickly as possible.

On the one hand, this is good, because the space is warming up at a very good speed, and on the other hand, there are also disadvantages.

1. Firewood or other backfill material is not economical.
2. As a rule, the principle by which standard stoves or fireplaces are made does not allow for a long time to keep the resulting heat. That is, to put it simply, here we have fast heating and relatively fast cooling of heated elements.

But solid-fuel heating boilers of long burning are designed in a completely different way - taking into account the shortcomings described above.

• The thing is that in them the flame “moves” from top to bottom - due to this, it turns out that the bookmark burns out slowly, but the level of heat released is the same as when heating ordinary furnaces.
• In addition, the combustion chamber of solid-fuel products of the modern type is designed so that the efficiency of combustion is very high - heat is not wasted, but fed directly to the heat exchanger or to any desired point.
• The logic of work here is that the fire in the combustion chamber gradually moves downwards, and this, by the way, makes it possible to burn fuel most efficiently so that only a minimum of ash remains.
• But the main distinguishing feature is of course the burning time. Depending on the model, the heater can work without additional laying of firewood from 6 to 34 hours!

Let's take a look at these economical designs in more detail.

Advantages and disadvantages

It is better to understand everything in the comparative table.

Note! For standard heaters of this type, coal is often undesirable. Because coal during combustion produces more heat than wood - and this leads to a rapid burning of the metal. Therefore, if the main type of fuel that you intend to use is coal, be sure to specify whether the furnace can operate from this fossil.

Now we will touch on one important point.

Where can I install boilers

The heating boiler of long burning can be installed in such rooms:

• In production workshops.
• In warehouses.
• In garages or car repair shops.
• In greenhouses and poultry houses.
• In private houses and cottages.

As you can see, the scope of application is quite wide.

The only thing that needs to be considered is the fire hazard of structures of this type. If these are industrial products, then there, as a rule, maximum protection of the surrounding area from accidental ignition is provided. But with the artisanal options you need to be as accurate as possible.

If we talk about a particular installation site, then you need to look at the situation - in industrial premises, such heaters are placed directly in the room, in residential buildings, it is better to take them to a separate room or even to the street. When the heater is moved out of the heated room, air ducts are connected to it (they are usually inexpensive) and a “snail” type fan for forcing hot air into the hoses.

With the installation site figured out, now you can talk about one more equally important nuance.

What can devices be made of?

Naturally, the base material from which all Russian and imported boilers are made is metal. However, the metal, as you understand, is different - and this fact determines the differences between the structures of one or another alloy.

Dive into the comparison tablet again.

Note! When choosing a steel product, be sure to pay attention to the presence of a ceramic lining on the metal surface of the combustion chamber. If there is no such protective layer, the condensate from burning material that contains sulfur oxides will quickly destroy the walls of the combustion chamber. This recommendation is especially relevant when choosing home-made options - because the best factory boilers are usually protected from such a problem.

So, the “basics” were dismantled - then you can look at the products of specific brands.

Overview of the most popular models

It should be noted that modern industry does not stand still - for sale now there are both standard stoves and automatic heating boilers with a long-burning water circuit.

The automation process here is that the desired temperature is set, which is then automatically maintained. In more advanced models, you can also set the automatic download.

So if necessary, you can choose a solution with any necessary functions.

Let's return to the review of models.

Stropuva

Devices manufactured under the brand STROPUVA, are very well known and reliable.

Structurally, they are two cylinders, one of which is located inside the other. The heat carrier (air) is “placed” in the space between these two cylinders. The combustion chamber works on the same principle as all other heaters of this type - firewood burns down from the top.

From above, the metal is covered with a heat-insulating layer, which allows minimizing heat loss inside the furnace and distribute it as efficiently as possible.

As for fuel, the devices of this brand can work from such sources:

1. From coal. Moreover, suitable as brown coal, and very high quality anthracite.
   

Note! To burn anthracite requires a very powerful hearth of burning, and this is not always possible. For this reason, about a quarter of the pledged amount of material does not burn through to the end, and the remains of unburned coal have to be returned to the furnace during the next bookmark. This can be avoided by laying large pieces of anthracite, rather than small “seed”.

1. From firewood.
2. From the pellets.

1. From briquettes from peat and various types of trees.

Advice: peat is not recommended for use in densely populated sectors, since during the combustion it will emit many tiny particles, from which an unpleasant odor emanates.

If we talk about specific characteristics, then this brand has a really high level of efficiency - up to 90%!

In addition, the Stropuva boilers can work on one mortgage for a very long time:

• From firewood - up to 28-30 hours.
• From briquettes - up to 50 hours.
• From quality pellets - up to 72 hours.
• From good coal - up to 5 days!

Naturally, the burning time here largely depends on how efficiently the building retains heat - that is, it is important to consider whether the walls are warmed, floors, etc.

As for the energy dependence, then, of course, it all depends on the design of the system. There are solutions that require constant or periodic connection to the power grid, and there are completely autonomous devices, moreover, with the natural circulation of water in radiators.

Now let's consider another well-known brand - "Bourgeois K".

Pyrolysis boilers

Devices of this type differ from standard solid-fuel devices in that the coolant is heated not due to the combustion of the filling material, but from the gas that this material releases during combustion.

Here it turns out that the gas obtained from firewood or pellets does not go outside, but is fed into the combustion chamber and already there it burns to the end. This principle allows you to significantly save fuel and maximize the use of thermal energy - the efficiency of the Bourgeois K brand heaters reaches 92%!

In addition, due to the fact that most of the gas burns inside the combustion chamber, the amount of harmful substances emitted into the atmosphere is minimized. And this is an important factor, agree.

The types of fuel used are the same as in the previous case, but the level of consumption is slightly lower. If we talk about wood, then, as a rule, on a room of 100 square meters. meters need no more than 15-17 kg. wood per day.

Well, the autonomy is complete here - you do not need to connect to either the gas or the power grid.

As for the scope of application, then you can say so - both of the above brand is convenient to apply both in industrial premises and residential. The only drawback in this case is the rather high cost of the instruments.

But there are, of course, more budget solutions.

Not too expensive products

It is customary to think that only domestic products can be cheap, but this is not at all the case. European manufacturers also take into account the difference in budgets and make quite worthy decisions that for the price do not “bite” much. A striking example is the Viadrus boilers.

This company produces cast-iron appliances, and not only standard solid-fuel, but also pyrolysis. The fuel here can also be very different (even liquid), but you must carefully watch the instructions for each specific sample.

As for the specific features, we can distinguish the following points:

1. The power of devices of this brand can be scaled - by adding or reducing the number of sections of the heat exchanger.
2. The level of efficiency here is slightly lower than that of the two previous options - approximately 75-80%, but the cost is quite affordable.
3. The heat exchanger is made of cast iron, which guarantees a long service life of the structure.

In a sense, we can say that this option is a kind of "golden mean" between the cost and quality of the product.

If you need to save even more, then you should pay attention to some relatively inexpensive domestic offers. And, by the way, they most often are distinguished by a fairly high and stable quality, since high-precision imported machines have increasingly been used for the production of devices.

A good example of good boilers is Prometey products, which are manufactured by the Russian plant Sibenergotherm.

The range of power they have is very wide - you can buy devices from 12 to 45 kilowatts. Direct designation of buildings - heating of residential premises and production.

The level of efficiency is about 80% in the case of firewood and about 85% when burning coal. Production material - steel. Most of the boilers have a water jacket, which increases the level of heat transfer device.

The heat exchanger is made of high quality alloy steel, which is able to withstand 100,000 hours of heat exposure (continuous).

Prometheus also possess such an important quality as complete autonomy of work, without being tied to the power grid.

In principle, if you need to organize a heating system for a private house or a small production facility, then this is a very good and inexpensive option.

Also for private needs, the “Don” boiler is also perfectly suited - this is the “product” of the Rostov plant. Products can have a capacity of 16 to 32 kilowatts and work on most types of solid fuels.

A distinctive feature is an acceptable cost and the ability to connect a gas burner. In addition, some models are dual-circuit devices. That is, they can heat water not only in radiators, but also in the hot water supply system for the shower and the kitchen, for example.

On this our review can be completed. Let's summarize the article.

Conclusion

In principle, we figured out all the main nuances that need to be paid attention to when choosing boilers for long burning. In addition, we reviewed the general principle of their work, as well as got acquainted with all the most popular brands of products.

You now, probably, understand that a solid fuel boiler of long burning with your own hands can be done, of course, but the factory quality is still better. At the same time, the security level of the factory options is much higher.

We hope that this information will help you make the most correct choice. If you want to get even more information on this specific topic, then turn your attention to the informative video at the end of this article.