I have already presented a comparative review of various heating stoves, which, as practice shows, are in the most active demand among Russian consumers. However, individual designs of furnace devices require additional review. And dialogue with the consumer. This is the domestic Breneran stove - there is a special interest in it. You can read more about its structure here, and also watch the video. In this article I want to focus not so much on the advantages of the stove (they will tell you about them in advertising!), but on some of the nuances that real consumers themselves pay attention to.
Russian-made oven ↑
Breneran belongs to long-burning convection ovens
In fact, this stove can only conditionally be considered our own domestic development. Because it is an almost complete copy of the Canadian popular Buleryan stove. But nonetheless…
So, a few words about “Breneran”. And first, about ovens of this type - convection ovens.
The vast majority of modern metal stoves offered on the market have the same principle. Almost all of these devices are convection. Double-hull: inside there is a firebox, often with an afterburner chamber. Flue gases exit into a special smoke pipe at the rear. This makes combustion easier to control by limiting the air flow. The famous Russian stove is built on this principle.
User reviews
Mark, Moscow: “I have been using the Buleryan-Aqua stove with a water circuit for 2 years now. At first I used pine logs as firewood, but then I decided to use birch firewood. And then a problem arose - the pipes began to become clogged with porous masses. Because of this, they had to be cleaned, which was not very convenient in winter. This winter I changed everything - they use only chopped and well-dried firewood. I also make sure to set aside time to clean the pipes regularly, and there are no problems. Firewood began to burn faster, and it became even warmer than before.”
Irina, Novosibirsk: “I’ve been using Buleryan for 6 years. The oven is great, I’m not even afraid to leave it on overnight. The main thing is not to forget to switch it to smoldering mode out of harm’s way during this time.”
Kristina, Sverdlovsk: “Our family has a country house with an area of 100 m2. For him, we once purchased a Buleryan stove, which works great - everything heats up quickly, and only dry wood is used for heating. Although I am completely satisfied with the stove, I treat it with some caution, since it is very powerful.”
Evgeniy, Syzran: “I have extensive experience in using various stoves for heating, and I can say from experience that the Buleryan-Aqua stove with an additional circuit is an excellent option for those homeowners who permanently live in a private house. If you pour antifreeze liquid into the pipes, then even in severe frosts there will be no problems with the heating system. But still, such a stove is not suitable for everyone - it is very expensive.”
A unifying collector could improve the situation ↑
Heating of the room occurs to a large extent due to the radiation of heat from the surface of the stove. So if the stove is located in an insulated room, and the neighboring ones are heated by supplying warm air through pipes, the heat loss will be quite noticeable. On this basis, experts advise that the first step is to put a special casing on the stove, create a connecting manifold, and only then separate the pipes from it. There are no such oven options in serial production; they are made to order, but this is also not a cheap pleasure.
Positive and negative aspects of work
To fully evaluate the Buleryan stove, let’s pay attention to its positive and negative qualities.
Advantages of the Buleryan stove
From what was written earlier, some undeniable advantages of the operation of this furnace are already visible, but we will group all the characteristics that speak in favor of Buleryan:
- High efficiency ≈ 70%;
- Economical fuel consumption;
- Easy to install and use;
- Quick heating of the room;
- Possibility of transporting hot air to other rooms (even on different floors) through air vents;
- Uniform heating of the room due to convection;
- The burning time of one load of fuel is ≈ 10-12 hours.
Disadvantages of the Buleryan stove
Now about those arguments that can be attributed to the negative aspects of the furnace operation:
- The original Buleryan stove and its analogues are designed to operate only on wood;
- Most of the generator gases, unfortunately, do not burn and fly out into the chimney;
- Due to incomplete combustion of wood and gases, the stove produces smoke, and this soot exits into the chimney pipe. Therefore, it is recommended to extend the pipe 3 meters from the height of the stove. These are additional costs, and you need to take into account the fact that the pipe must be insulated, regardless of what it is made of - brick or metal;
- Incomplete combustion of fuel also accumulates condensation of tar, soot and water in the chimney. This cokes the pipe and gives an unpleasant odor during kindling after a long period of inactivity;
- The design of the furnace is designed for heat transfer from its surface, but for the same reason dust burns on the hot metal. This does not improve the atmosphere of the room;
- It is not so easy to ensure maximum efficiency and long burning of one bookmark - you need to master the skills of adjusting the dampers.
As you can see, what is the fundamental idea of all analogues of the Buleryan stove, namely smoldering-type combustion, simultaneously causes a lot of side effects .
How to remove condensation ↑
There is another known problem that is associated with the operation of Breneran. Its smoke pipe, as you know, is located on the wall of the stove at the back. A tee is mounted here - a chimney pipe is connected to it. At the bottom there is a glass plug for condensate. This design does not have the required tightness. And this is a problem, because condensation inevitably and steadily enters the air, which is not good. Some craftsmen adapt their own solutions, making sealed containers to collect condensate, while others remove it from the room using pipe devices. In short, we have to innovate as best we can, because the market, alas, does not offer ready-made solutions.
Price and terms of use
For example, a long-burning device Buleryan-Aqua PO-100 will cost you at least 10,000 rubles. This oven has a double combustion chamber. The warranty period is only 1 month. The volume of the room for heating can be up to 100 m3. There is another model, Buleryan-Aqua PO-200, which costs 15,000 rubles, and its main difference from the first model is that it can heat a room with an internal volume of 200 m3. But the Buleryan-Aqua NV-400 costs 19,000 rubles, and it can heat a room with a volume of 400 m3.
"Aqua-Breneran" ↑
Breneran stoves are known in several standard sizes, depending on the volume of the premises. To connect the water circuit, a model called “Aqua-Breneran” is offered. The disadvantage of this model can be considered the presence of a so-called “cold core”, which further cools the flue gases, which leads to worse draft in the pipe, promoting even more intense condensation formation. “Aqua-Breneran” needs to be heated more intensively. Consequently, the duration of operation of the furnace on one load of fuel is shorter.
How did buller ovens come about?
The history of the appearance of buller ovens largely determined their features.
Canadian taiga, a climate that is even harsher than Siberian... Canadian lumberjacks who work exclusively in winter and who need something to quickly and safely warm up in their trailers. The furnaces known at that time were not suitable for solving these problems. Something else was needed...
Fig 2. Severe Canadian taiga
In other words, we needed stoves that met the following criteria:
- The oven operating time should be as long as possible. It’s understandable, because you don’t really want to get up and warm up at night when you fall off your feet after a hard shift.
- The furnace power should be adjusted simply, without requiring special skills and abilities. Well, lumberjacks won’t take courses on how to properly operate a furnace.
- Any electronics and automation should be excluded. It’s logical, otherwise the slightest breakdown could cost the lives of the entire team of lumberjacks, and there might simply be no electricity.
- The stove must meet safety requirements, namely: the absence of carbon monoxide, the exclusion of strong heating of the stove body. This is in case some lumberjack, half asleep, stumbled upon a slightly overlooked object, and could not get burned and lose his ability to work.
All these requirements were taken into account when creating Buleryan stoves. By the way, there are no proven facts about who exactly created this type of stove - the woodcutters themselves or competent heating engineers. The only thing that is known for sure is that the birthplace of Buleryan stoves is still Canada.
Chimney for Buleryan stove
Periodically, the chimney pipe must be cleaned of soot and condensation soot (recommended 2 times a year). Ignoring chimney cleaning and using wet firewood will clog the chimney and reduce draft force.
Frequent use of the stove in the kindling mode (at maximum temperatures) leads to its rapid wear in just 1-2 seasons (the metal burns out). If all instructions for current maintenance are followed, the stove can last 5-10 years or more.
One of the advantages of wood stoves is ease of installation. There is only one difficulty in this process, which is the correct connection of the heat generator to the chimney.
It is obvious that the operation of the heater without a suitable exhaust channel for combustion products is impossible.
The chimney for a Buleryan stove is one of the most important parts of such a heating system, so it must meet certain requirements, which will be discussed below.
It is worth immediately noting that incorrect selection or installation of a chimney pipe can not only significantly reduce the efficiency of the boiler and heat exchange, but also provoke the appearance of extremely dangerous concentrations of smoke in the room.
Therefore, it is necessary to take a very responsible approach to the arrangement of drainage channels and trust their installation only to professionals of the appropriate profile.
The choice of a chimney pipe for Buleryan begins with the selection of a suitable material from which it will be made.
On the modern market you can find various products for this purpose, but not each of them can be used in combination with a convection oven.
The main materials for smoke ducts and their characteristics are as follows:
- Chimneys made of stainless steel.
They are ready-made pipe parts, the advantages of which are ease of installation, reliability and durability. They are single (installed inside brick shafts) and double (designed for constructing external gas exhaust channels).
The quality of steel chimneys for Buleryans is determined by the thickness of their walls, which must be at least 1 mm. Due to their versatility, these products are well suited for connection to the heaters in question;
Chimneys made of ceramics.
The second type of outlet channels is compatible with modern heat generators, such as buller stoves. Structurally, they consist of three layers - an internal ceramic pipe, insulation and an external concrete shell.
Ceramic chimneys for Buleryan are distinguished by their lack of corrosion, ease of cleaning, excellent draft, high fire resistance, ease of installation, and resistance to weather influences and condensation. All these qualities make them a good choice for operation in combination with Canadian stoves;
Brick chimney.
It has been traditional and most widespread for many centuries. However, this material has one significant drawback - it is poorly suited for working with modern long-burning boilers, which include Buleryan.
The fact is that such equipment produces a small amount of combustion products with a relatively low temperature, which results in the formation of water vapor and condensate inside the brick chimney for Buleryan, which gradually destroys the masonry.
These problems can be avoided by inserting a single steel outlet pipe into the existing shaft;
Chimney made of asbestos.
Another type of smoke exhaust ducts that are not suitable for Buleryan stoves. However, it has several serious disadvantages. An asbestos chimney for Buleryan, even if well insulated, is characterized by the constant formation of a large amount of destructive condensate.
In addition, asbestos emits a very unpleasant odor that can spread throughout the entire area of the heated room.
Review of Breneran furnaces with a water circuit
Long-burning gas generator stoves have gained great popularity in countries with harsh climates, where temperatures below zero degrees remain for several months. Inexpensive, reliable and economical. And if such a stove also has a built-in water circuit, then it becomes indispensable in many ways. After all, it can be used both for heating air in a residential or industrial premises, and for heating a house, cottage or garage.
Let's look at the main types of long-burning stoves with a water circuit presented on the Russian market, using the example of the Breneran-Aquaten or "Aqua-Breneran" stoves, which have different reviews from owners and stove makers. We will also consider their technical characteristics, operating principle, model range and prices.
This is probably the most famous and popular oven of this type. Its prototype was taken as a basis - this is the Breneran (Buleryan) stove. Then the engineers modified it somewhat and, by installing a heat exchanger in it, made it possible to use it not only to heat the surrounding air, but also to heat the coolant in the heating system.
Construction of the Breneran-Aquaten furnace (Fig. 1)
The stove body is welded from steel and covered with heat-resistant black enamel. There are two combustion chambers inside this furnace: upper and lower. In the lower chamber, the process of producing gases from solid fuel occurs, and in the upper chamber, the afterburning of these gases occurs, followed by heat generation.
There are 2 manifolds with built-in injectors on the sides. To adjust the power and operating mode, two dampers are installed on the stove: on the front of the door (4 - Fig. 1) and on the rear chimney pipe (3.5 - Fig. 1). For supplying and discharging coolant, there are two threaded manifolds on the unit body (1,2 - Fig. 1). The diameter of the chimney can be different, depending on the type of Aqua-Breneran: from 120 to 180 mm.
AOTV Breneran-Aquaten stoves come in several types:
— AOTV-6 type 00 — AOTV-11 type 01 — AOTV-14 type 02 — AOTV-16 type 03 — AOTV-19 type 04
They differ from each other in size, power, combustion chamber volume, and weight. Selected according to the area of the heated room. The smallest will heat up to 100 m3, the largest up to 1000 m3.
Technical characteristics of a long-burning furnace with a water circuit Breneran-Aquaten
Technical characteristics of Breneran-Aquaten
Almost any solid fuel is suitable for the Breneran-Aquaten stove: firewood, peat, cardboard, wood chips and sawdust, except coal and coke. It must be remembered that for the correct operation of such a stove, you need to ensure that when lighting the lower chamber is completely filled with fuel. In this case, the manufacturer guarantees operation on one load of solid fuel for up to 8-10 hours.
Using the water circuit of the Breneran furnace
Such a long-burning stove can operate in both open and closed heating systems. For a closed system, you need to purchase additionally and install the following equipment into the system:
- circulation pump - membrane expansion tank - safety group (safety valve and air vent, as well as pressure gauge)
For proper use of the stove in systems with natural circulation, it is necessary to observe a certain slope of the heating system pipes. As well as an open type expansion tank, which will need to be placed at the highest point of the system.
Everything is shown in more detail in the photo diagram below.
Installation diagram of the Breneran-Aquaten stove in an open heating system
Advantages of the Breneran-Aquaten furnace with a water circuit
— high operating efficiency in long-term burning mode — the ability to work in open and closed heating systems — the ability to combine with cast iron radiators without converting the old system to plastic (polypropylene) — affordable price from 15,000 rubles
Disadvantages of the Breneran-Aquaten stove
- not aesthetically pleasing - not recommended to be combined with modern aluminum radiators - a number of conditions for operation in gas generation mode (fully filled volume of the loading chamber, adjustment of dampers)
Total
A long-burning stove with a water circuit, Breneran, can be suitable for rooms of different sizes. But such a stove will not look very aesthetically pleasing at home. A special boiler room is ideal for it; you can also use it to heat a production workshop or garage, etc.
For heating a private home, I would still advise considering other, more modern options for long-burning stoves with a water circuit . For example, domestic Cooper boilers have proven themselves well. Or consider imported analogues, but in this case the price of the stove will be higher, and significantly. Therefore, you will have to choose. And finally, a short video review.
New model of the Buleryan MAXI (type 00) stove
Reviews of the Buleryan MAXI stove vary. Many buyers praise this model for its performance and efficiency. Unlike previous models, this oven has a power of as much as 7 kW. This is quite enough to heat a 125 cubic meter cottage. m. At the same time, the efficiency is at the level of 75%. The new modified firebox of this stove has already proven itself on the positive side. Its door is large and allows you to quickly load firewood.
At the same time, the depth of the firebox is significant, and up to 6 kg of wood waste can be placed at a time. As a result, the temperature will remain stable for 7 hours. Adjusting the power is very simple and even a beginner can handle it. The oven is also easy to install and will not cause any problems. According to the owners of these devices, given the low cost of this model, it is perfect for almost any garden.
Principle of operation
Since 2005, these units have been produced under the Breneran brand.
In Russia, Energetec is producing these stoves under license. At their core, stoves of this brand are gas-generating convectors.
Gas generation or pyrolysis is the process of releasing so-called wood gas from wood heated to the point of smoldering. To prevent the fuel from catching fire, the chamber where it is located (it is called the gas generator chamber) is made sealed, thus preventing fresh air from entering inside.
Wood gas is a mixture of various gases, some of which, such as methane, can burn. Through holes in the partition, this mixture enters the second chamber (afterburning chamber), where it is burned. In most modern boilers of this type, the afterburning chamber is located below the gas generator, which makes it possible to maintain the high temperature in the latter that is so necessary for full pyrolysis.
But the creators of Buleryan, in order to simplify the design, did the opposite - they placed the gas generation chamber at the bottom. For this reason, the efficiency of the furnace does not exceed 80% (with an economizer), while for other gas-generating boilers this figure reaches 90% - 93%.
Now let’s look at the second part of the name – the word “convector”. In principle, convection occurs during the operation of any solid fuel heat generator. But convectors heat the air much faster than a conventional oven. They are equipped with a vertically mounted pipe, open on both sides, that runs directly through the firebox. The air in this pipe heats up much more than from the body, and thanks to the phenomenon of convection, it rushes upward in a powerful flow.
Operating principle of the Buleryan stove
At first glance, it seems that a powerful fan is installed inside the oven. Cold air is sucked into the pipe from below.
The convector very effectively heats the room in which it is located, but it is not able to provide a comfortable temperature in neighboring rooms. To make their creation more functional, the developers released a model with a water jacket. Previously it was called “Aqua-Buleryan”, now – “Breneran-AquaTEN”.
The presence of a water jacket (heat exchanger) allows you to connect the heat generator to a water heating system.
The letters “TEN” are present in the name for a reason: the model is equipped with an electric heater that will prevent the coolant from freezing if the user for some reason forgets to put firewood in the firebox.
High-quality Breneran Aquaten stove and its structure
In order to be able to heat not only the space around the stoves, but also the entire room, a water circuit is built into the heating equipment with an operating principle similar to central heating. It looks like an ordinary coil with liquid heated inside. It then spreads through pipes throughout the house and heats it up.
You can familiarize yourself with the design of the Breneran Aquaten stove yourself using the Internet
The body of this furnace is made of steel and treated with heat-resistant enamel, and of :
- Two chambers – the lower one for fuel and the upper one – for afterburning the gas released during combustion;
- Two injection manifolds located on the sides - it is through them that water enters, is heated and exits;
- Two power regulators installed in the chimney and on the door.
Depending on the equipment models, stoves may have different chimneys, volumes, and parameters.
If the stove is used for a closed heating system, then for its operation a circulation pump, safety valve, air vent, pressure gauge and expansion tank are also purchased.
By the way, Breneran-Aquaten stoves operate only on solid fuel. But it does not use coke or coal.
For high-quality and efficient operation of such a stove, you need to completely fill it with fuel, and then one fill will be enough for 8-10 hours.
History of Bullerjan stoves
40 years ago, inventor Eric Darnell, living in the picturesque state of Vermont (on the border with Canada), purchased a wood-burning stove from a well-known manufacturer, but it worked ineffectively - it consumed a lot of fuel and did not warm up the hut. At that time, the man was working on creating fireproof curved steel pipes. He came up with the idea of connecting them to the stove.
It took Eric only one week to produce the design, which delighted the inventor with its excellent result. And after some time, Darnell decided to give the desired warmth to all people by starting to produce highly efficient heating devices. He was supported by Sherm and Bob Wilson. Work is in full swing!
One fine but frosty day, an entrepreneur from Germany arrived in picturesque Canada. His name is Erhard Knofler. A man went into a lumberjack bar to drink a cup of fragrant coffee and saw a stove that interested him very much. A little later, he met with the inventor of the heating design, Eric Darnell, and bought the patent for the stove. After some time, an enterprising German founded and registered the Bullerjan trademark, which captivated the whole of Europe.
Almost half a century has passed since the birth of beautiful heating structures, and they are still in great demand.
Exploitation
In order for the heating system to operate with maximum heat transfer, the instructions must be strictly followed.
Reasons for low performance may include:
- Insufficient chimney height;
- Illiterate installation of the stove (the distance from the floor is acceptable within 40-50 centimeters);
- Too many connected heating radiators (the oven should not operate at maximum).
To prevent the circuit from defrosting, it is necessary to completely drain the water from the system after finishing work.
Since the buler was originally developed for heating the living quarters of lumberjacks, the ideal fuel would be firewood - dry, hardwood. It is desirable that these are solid logs with a size corresponding to the length of the fuel chamber. Coal can be used as fuel, but is not recommended.
The firebox door must be tightly closed during operation - no gaps are allowed. Ash should remain in the firebox the entire time the stove is operating.
As already mentioned, the product has several names, although in essence it is the same device. Buleryan was renamed by the official manufacturer about fifteen years ago, due to the introduction of some improvements to the original design. As a result, the warranty period for the device has increased to two and a half years.
