Build Daily

Furnaces And Heating Systems

August 12, 2017 18:06

The oven with a water circuit to heat your home

have sitting in front of a fireplace or stove human is unlikely to arise the idea that these heating devices low efficiency .Contemplation of the fire and the thrill of a live heat not replaced by any modern boiler, whose flame is hidden in its depths, and not visible to the eye, and every kilowatt reflux eplovoy energy is carefully selected and transferred coolant.But it turns out, there is a beautiful, even elegant compromise - a stove with a water circuit to heat your home.

The oven with a water circuit to heat your home

furnace with a water circuit to heat your home

stove heating

Article Contents

  • 1 stove heating
  • 2 Why is heating with coolant wins furnace?
  • 3 overview of commercially available furnaces with a water circuit for heating
    • 3.1 Fireplace insert with water circuit "Aquarius»
    • 3.2 Solid boiler "the Armada 20»
    • 3.3 Video: Review of furnaceswater circuit
  • 4 water circuit for heating in a brick oven
    • 4.1 Types of heat exchangers and their locations in a brick oven
    • 4.2 what the heat exchanger?
    • 4.3 calculation power and the furnace heat exchanger size
    • 4.4 Installation of the water circuit in a brick oven
    • 4.5 Rules of operation of the furnace with a water circuit
    • 4.6 Construction of heating and cooking oven with a water circuit with his hands
      • 4.6.1 list of necessary materials and devices
      • 4.6.2 Procedure works
      • 4.6.3 poryadovkoy masonry oven with a water circuit
      • 4.6.4 Video: Heating and cooking stove with a water circuit
  • 5 Pitfalls water circuits furnaces
  • 6 ideal place oven with a water circuit from the point of view of engineering science
  • 7 Conclusion

furnace has always been a kind of "heart" of the house.She always traditionally stood in the center, and all life was in full swing near her .The oven cooked food near her warmed in winter.Well-heated oven accumulated so much energy that even after extinguished the fire, she still long gave warmth all households, spreading it like the sun in all directions from its massive walls.And the fuel for the kiln - conventional firewood in Russia have always been many, most importantly, do not be lazy and stock up on them in the summer.

stove heating has a number of advantages:

  • Firstly, ovens do not require a connection to the gas and electrical networks, they are used as a fuel mainly wood, which is a renewable fuel view them on most of the territory of Russia will always be a lot onreasonable prices, and sometimes even for free.
Firewood will be used for a long time on the territory of Russia as a fuel

Firewood will be used for a long time on the territory of Russia as a fuel

  • Secondly, in the furnaces sold most comfortable radiant heating when the massive walls of the oven radiate heat, transferring it to the surrounding objects and air.
  • Third, the oven can combine several functions: the actual self heating, cooking, water heating.
Modern multi-purpose stove

modern multifunctional stove

  • Fourth , open fires in fireplaces contemplation (and they are, in fact, are the furnaces) creates a comfortable atmosphere.
  • Fifth, the massive construction of the furnace in the cold season is able to save a huge amount of heat energy, which it will gradually give.In the summer, all the time going contrary : furnace, which is always based on a separate foundation "resets" the surplus heat into the ground from the scorching air, that is, is a kind of air conditioning.
  • Finally, furnace heating does not harm the environment if it used fossil fuels, because of the combustion processes in nature occur constantly.

add a little bit of tar in a barrel of honey and list the disadvantages of furnace heating:

  • stove heating requires constant human intervention: laying of firewood, cleaning the ash and flue draft adjustment and other operations, although the country house of periodic accommodation is rather a plus,than a minus.
furnace firebox requires constant human intervention

Furnace furnace requires constant human intervention

  • How much power does the furnace, the more it should be geometric dimensions, which "eats" a useful area of ​​the house.
  • furnace can heat only the room, which is in direct contact.In remote areas have to build or install more one oven, as was the case in older homes.
  • traditional Russian brick oven because of its very long persistence goes to operating mode.Part of this deficiency deprived of modern fireplaces, stoves and ovens Buleryany .
  • stove heating efficiency is low - less than 40% and usually have excess capacity.When oven enters into operation and is warming up, you stand next to it is almost impossible, but then cools, it gradually gives heat.At the same time a lot of energy just takes off into the atmosphere through the chimney.
  • process of fuel combustion in the furnace control is more complicated than in the boilers.Redeem oven immediately is almost impossible, which increases the level of fire danger.
  • furnaces require a chimney with good traction to burning is intense, and the flue gases into the atmosphere and does not penetrate into the room.Chimneys must be isolated from combustible building structures.
  • furnace required to constantly keep a solid stock of fuel, which must be periodically replenished, and the slag and ash disposal require.

To sum up all the above, it can be said that the furnace has a right to exist, but in many respects they all still lose other types of heating.In general, it is a troublesome business - the furnace.If in a country house, where a man appears periodically - it's pleasant chores, then in the homes of permanent residence furnace operation turns into a routine and is often a necessary measure, for example, when there is no possibility to organize a different heating system due to lack of mains gas.

Why is heating with coolant wins furnace?

As previously mentioned, one of the main problems is the inability to heat the ovens remote them premises.In modern models of stoves and fireplaces manufacturers have tried to solve this problem by providing their heating appliances convection air channels to which you can connect ducts.Warm air from the furnace is carried from room to room, otaplivaya them.Very good solution which, by the way, works well in some homes.

Example of a fireplace with convection air channels

Example fireplace with convection air channels

air in such furnaces performs coolant function, that is, a substance that is capable take heat from the oven, and then transported to a destination and give its remote room.To do this, you only need to build a duct system that is not without drawbacks, and is associated with certain difficulties:

  • Firstly, the ducts have a large size, they are often impossible to hide for building structures.
  • Secondly, the ducts have a strong resistance to the movement of the heated air, especially if there are many turns.Therefore, there are limitations on their length.
  • Third, the air has a low specific heat capacity , therefore, to convey certain amount of heat energy for removed from the furnace room requires a large quantity of hot air.For this we need to build a larger air ducts, or forcibly fed heated air blower.
  • Finally, on ducts transferred large amounts of dust, soot and other contaminants, which are near the stove always abound.
A dirty air duct

dirty air channel

best and most common coolant used in home heating systems, is water due to its advantages:

  • Water has a very high specific heat capacity ( With = 4,187 kJ / (kg * ° by ) ) compared with dry air ( with = 1,005 kJ / (kg * ° By ) ), so it can receive and transmit large amounts of thermal energy over long distances.
  • The heated water is easily transported to the desired location on the piping , having small dimensions.
heating pipes

heating pipes

  • Water is absolutely harmless, non-toxic and does not burn.
  • water is always available, it can be said that it is almost free.

main drawback of water - it is high freezing point - 0 ° C, while it expands in volume and damage the heating devices.In addition, the water in combination with oxygen in the air to high corrosion activity black metals. Hard Water - with a high content of calcium and magnesium results in the formation of scale on the inner surface of the pipe salts, heat exchangers and radiators, which drastically reduces their characteristics.All this requires special measures:

  • In homes year-round, a dangerous water winter, the heating system is not threatened, because it is constantly in use.Modern gas and electric heaters have protection function, which will not allow the coolant temperature to fall below + 5 ° C .
  • In homes where the man in the winter does not appear, the water from the system, you can simply merge, but in this case will go to accelerated corrosion of steel components of the heating system.More one solution is the use of special anti-freeze, lowering the freezing point, but they are not compatible with all boilers and radiators are cheap and age over time.
  • Very often in heating systems where the coolant is water, put "on guard" standby electric boiler , whose task is to maintain the temperature in the house, and, hence, the coolant in the a certain minimum level.When there owners , run boiler, furnace or fireplace to melt and the temperature raised to the desired."The post" again intrudes "guard" After the county.
Backup electric boiler

Backup electric boiler

  • To reduce the corrosion activity of water in her add special additives or make the system closed.Then atmospheric oxygen does not penetrate into the heating system and corrosion is terminated or goes very slowly and does not affect the overall service life of the heating devices.

Of course, the question arises - is it possible to combine the charm of the heating furnace with the advantages of systems where the coolant water acts.And at the same time try to escape from the disadvantages and one and the other.Completely solve the problem failed, but there are quite a good technical decisions made by both industrialized and implemented household Kulibina .Let us consider them, and then it will be possible to do certain conclusions.

overview of commercially available furnaces with a water circuit for heating

Among the embodiments of the oven with a water circuit it is necessary to choose those that are already in use and have been successfully operated.First and foremost, you need to pay attention to the ready-made products, which are commercially available.Here's why:

  • In most cases, already finished the oven cost cheaper than their own made or built.
  • On the creation of the finished work furnaces whole teams of highly skilled professionals with extensive experience, who expect to construct, develop production technology and operating practices.
  • When making use special heat-resistant steels and cast iron, which are inaccessible to the common man in the street Metal .
  • as industrial furnaces made higher than that made by primitive methods, as applied technological equipment a high level.
Modern boiler-heating furnace with a water circuit

Modern boiler-heating furnace with a water circuit

  • All furnaces have been marketed by manufacturers, are long and painful process of testing and registration of documents from the licensing and regulatory authorities.
  • industrial production furnaces are guaranteed by the manufacturer, can be provided with spare parts, they are easier to install, it is easy to pick up the chimney, they are provided with a set of ready-made model projects to create heating systems or integration into the existing.

Currently on the market of heating equipment is working a lot of famous and not so producers: ABX ( Czech Republic), NordFlam (Poland), EdilKamin (Italy), MBS (Serbia), Termofor (Russia), Romotop (Czech), Chazelles (France), Invicta (France), Vira (Russia), Panadero ( Spain), Storh (Germany) and many other . As an example, we decided to show two models of furnaces with a water circuit: fireplace insert « Aquarius" from kompaniii Termofor and oven «Armada 20" manufactured under the brand name Vira.Both of these models, we intend present away from echestvennyh manufacturers, as with equal technical characteristics, some western "counterparts" stand or indecent, or just shamelessly expensive.

Fireplace insert with water circuit "Aquarius»

very well-known company in the market "Termofor" produces fireplace inserts "Aquarius", which may be provided with a water circuit of the heat exchanger is for heating purposes.For the furnace can be constructed of any desired portal, to become a harmonious part of the interior of the house.It is produced in two versions, with a heat exchanger for water, and without it.We specifically indicated in the table specifications of both models for comparison.

Models Aquarius Aquarius TO
Fireplace insert Aquarius
Power fireplace insert kW 12 12
volume of heated space (maximum) cube.m 200 200
Dimensions, W * D *, mm 690 * 515 * 930 690 * 515 * 930
opening the firebox door size mm 315 * 535 315 * 535
Weight kg 68 77
volume of the combustion chamber, l 70.7 62.5
maximum load volume, l 56 52
The maximum size of a log, mm 545 545
chimney diameter mm 200 200
Minimum height of the chimney, m 5 5
volume of heat exchanger, l - 11.6
power coil (max) kW - 6
Maximum working pressure, kgf / sq.See - 0.5

design feature of this model is the fireplace insert:

  • large ovenproof glass furnace door is protected from sedimentation of soot and allows you to monitor fire .
  • Solid volume firebox provides a long burn.
  • Furnace additionally protected fireclay stone, which prolongs its service.Why?