Heating a private house with diesel boilers is one of the ways to organize heat supply. For independent development of the scheme, selection and installation of equipment, knowledge of the basic principles and rules will be required. In this case, it is necessary to take into account the specifics and equipment of diesel heating of a private house: boilers, guns, circuits, fuel consumption.
Characteristics of diesel heating boilers
In practice, diesel boilers for heating a private house are used only if there is access to cheap fuel. This is due to the relatively high energy consumption. Particular attention is paid to the quality of fuel, its composition and storage organization.
The consumer must know how diesel heating boilers work. The boiler design has a burner that is similar to a similar component of a diesel engine. After filtration and heating, fuel under pressure enters the nozzle, where fine dispersion takes place. To maintain the combustion process, air is forced. After igniting the mixture, a uniform flame is formed. The combustion intensity is adjusted by reducing (increasing) the fuel and air supply.
Modern economical diesel heating boilers are characterized by reliable operation, high efficiency and relatively small dimensions. But like all heat supply devices, they have positive and negative aspects of operation.
Benefits:
- High efficiency. Modern diesel heating boilers are equipped with efficient turbo-cyclone burners. They provide afterburning of carbon monoxide, thereby optimizing fuel consumption;
- Safety operation. All Kiturami diesel heating boilers have a multi-stage security system. Unlike gasoline, diesel does not emit a large amount of vapor for ignition outside the burner;
- No need to draw up permits for installation and further operation for floor or wall diesel heating boiler.
In many respects these qualities are affected by the connection scheme of diesel heating boilers and compliance with operating rules.
However, heating a house with diesel fuel is impossible without the following negative factors:
- Complexity of fuel storage organization, its additional cleaning and burner feed system;
- Specific smell. Heating a private diesel engine will not be completely airtight. In any case, a small part of the vapor will enter the room;
- Noise. Models of diesel boilers with fans create a high level of noise. In designs with turbines, it is smaller, but still present;
- Providing storage conditions for energy. The specificity of diesel fuel is to increase the density if the temperature of the medium is less than + 5 ° C. To solve this problem, many manufacturers of diesel boilers for heating a private house added a fuel preheating chamber to the burner design.
Self-designing this type of heat supply involves calculating the consumption of diesel fuel for heating a house, and selecting the optimal boiler model. But first, experts recommend that you familiarize yourself with the proposed designs.
A diesel burner can be installed in a conventional solid fuel boiler. It is important that the heat exchanger is designed for a high combustion temperature of diesel fuel, the dimensions of the combustion chamber correspond to the size of the burner.
Classification of diesel boilers for heat supply
The choice of economical diesel heating boilers should be based on their characteristics. In addition to technical qualities, operational and functional ones are taken into account. One of the features of this type of heater is a large variety of models.
At the first stage, you should decide on the type of equipment. If you need a fully equipped model, you can purchase a Navien diesel heating boiler. In the presence of a solid fuel boiler, a burner installation is often chosen. For this option, it remains possible to use diesel and solid fuels for heat supply.
In this case, the heating efficiency will be lower by 10-15%, since the characteristics of the boiler do not fully meet the requirements of the operation of the burner - the diameter of the chimney, the volume of the combustion chamber and the method of pumping air. Therefore, experts recommend choosing diesel fuel heating boilers.
Structurally, they can differ in the following ways:
- The presence of a second circuit for hot water. Operating diesel heating boilers will heat the water for domestic hot water in a second heat exchanger. The only negative is inefficient use in the summer;
- Installation method - floor or wall diesel heating boiler. It depends on the rated power - as it increases, the dimensions increase. Accordingly, boilers with high power can only be in the floor version;
- Heat exchanger fabrication material. Steel structures have less heat transfer resistance, but have a relatively short life compared to cast iron;
- Type of burner - simple or turbo cyclone. Almost all reviews of diesel heating boilers with a turbo cyclone burner indicate low noise and fuel economy.
In addition, there are so-called diesel heating guns. Their use for continuous heat supply is impractical. They are designed to quickly increase the temperature in the room.
By installing a heat accumulator in the heating of a private house on diesel fuel, it is possible to provide hot water supply even for a boiler with one circuit.
Overview of heating schemes with diesel boilers
The choice of boiler model is affected by a heat supply scheme developed independently or by specialists. The simplest option is to install a security group and other heating components: radiators, pipes and an expansion tank.
In practice, they strive to reduce coolant costs. Therefore, together with diesel heating boilers Kiturami, they install alternative heat supply - solar collectors, PLEN or geothermal equipment. Thus, the inertia of the system, fuel consumption is reduced, and the efficiency is increased.
Another way to optimize heating costs is to install a storage tank. This should be a model of indirect heating of water. The principle of heating a house with diesel fuel with this design is to use the stored energy to maintain the temperature in the house even when the boiler is off.
To select the optimal heat supply scheme, the following should be considered:
- The total area of the house. On average, 1 kW of energy is needed to maintain a comfortable temperature on an area of 10 m². But at the same time, fuel consumption by diesel heating boilers is taken into account - the more powerful the model, the more it is;
- For the connection scheme of diesel heating boilers, the recommendations of the manufacturer are primarily taken into account;
- Location of a Navien diesel boiler or another brand. This room should not contain combustible materials, including diesel fuel. Be sure to equip a separate boiler room.
Part of the negative reviews on diesel heating boilers is associated with non-compliance with these recommendations. The choice of heat supply scheme takes into account all factors affecting its operation.
To ensure the uninterrupted operation of a diesel boiler for heating a private house, it is necessary to install an emergency power supply unit. It will be required for the operation of the pump and fan (turbine).
Calculation of fuel consumption for diesel boilers
To plan the current costs of heat supply it is necessary to know the diesel fuel consumption for heating a house. These data can be taken from the technical data sheet of the equipment or to calculate the approximate volume of consumption yourself.
First, you need to calculate the required power of the heating system for a particular house. The best way to do this is to enter all the characteristics of the building into a special calculation program. The determining parameters are the materials for the manufacture of external walls, floors and roofs, their thickness and insulation layer. To select an economical diesel heating boiler, the calculated calculated power must be multiplied by a safety factor of 1.2. If the expansion of the system is planned (installation of new pipelines and radiators), it will not be necessary to purchase an additional boiler or change an already installed one.
The average diesel consumption for heating a house is 1 kg to generate 10 kW of energy. For heating 10 m² of living space, 1 kW of heat is required. As an example, we can make calculations of fuel consumption by diesel heating boilers for a house with an area of 150 m². In one hour, 1.5 kg of fuel will be consumed. With an average intensity of 15 hours per day, the consumption will be 22.5 kg. Typically, the duration of heating a house with diesel in a season is about 100 days, depending on climatic conditions. In this case, the total consumption will be 2250 kg per winter.
This indicator is influenced by a number of factors:
- Efficiency of a floor or wall diesel heating boiler. The higher it is, the more economical the fuel consumption;
- Building heat loss. In fact, the operation of diesel heating boilers is aimed at their compensation. This indicator can be reduced by warming the exterior walls of the house;
- Fuel quality. The presence of external impurities leads to premature clogging of the burner nozzle and the formation of a soot layer in the chimney. Therefore, preliminary cleaning of the fuel is required before entering the diesel-fired boiler.
But the determining factor of economy is the design of the boiler. To reduce heat loss, manufacturers make a double case, install modern fuel consumption control systems and equipment safety. These features are possessed by models of diesel heating boilers of the Kiturami trademark.
One of the productive ways to optimize fuel consumption is to install thermostats on heating batteries. Thanks to them, the cooling rate of the coolant can significantly decrease and, as a result, the fuel consumption for increasing its temperature.
Diesel heating gun: design and scope
During repair or construction work, operational warming up may be required. This can be done with a diesel heating gun. It differs from electric and gas counterparts in high power, efficiency and safety.
The diesel heat gun consists of a fuel tank, a fuel pump, a burner and a fan. Passing hot air through the nozzle heats the air in the room.Such a design can provide a rapid increase in temperature in a room or a certain part of it.
It is not recommended to use this type of heat guns for heat supply of a private house on diesel fuel for the following reasons:
- The disappearance of combustion products in the room. This leads to an increase in CO2 concentration;
- It is possible to heat only one room;
- Low rate of efficiency;
- The heat gun cannot be adapted to water heat supply as in the connection schemes for diesel heating boilers.
During operation of the heat gun, in accordance with safety regulations, the room must have good ventilation. For mobility, many models have wheels for quickly moving the structure around the house.
The acquisition of a diesel gun for temporary operation is impractical. The average cost of a model with a capacity of 20 kW is about 24 thousand rubles. The best option is to rent it.
Diesel boiler manufacturers for heating
The reliability of heating boilers depends on the quality of the materials used and the design features. Currently, there are a number of trading companies whose products meet international standards.
In addition to technical and functional characteristics, other factors that indirectly influence the choice must be taken into account. One of them is the presence of service centers of the manufacturer to service their products. These may be representative dealerships. For example, buying a diesel boiler for heating Navien, you can count on professional technical and consulting support.
In addition, you should pay attention to such factors:
- Guarantee period. Usually it is 24 months;
- Post warranty service;
- Pricing policy of the company.
To select the most suitable model, it is recommended to analyze the offers on the market. Currently, there are several companies producing diesel heating boilers - Navien, Kiturami, Ferroli, Buderus.
| Model | power, kWt | Cost, rub. |
| Buderus Logano G125-32SE | 32 | 140350 |
| NAVIEN LST 24KG | 24 | 61600 |
| Kiturami Turbo -21 | 21 | 37620 |
| Ferroli Atlas D 30 KI 100 | 30 | 219000 |
Bypass models are extremely rare. To provide hot water supply, an indirect heating tank can be installed, which is much cheaper than purchasing an exclusive diesel-fired boiler.
Before buying a boiler, it is necessary to check with the seller for the availability of certificates for heating equipment.
Reviews about diesel boilers
With a deep analysis of reviews of diesel heating boilers, one significant drawback is their expensive fuel. Compared to other energy carriers, it takes the second place in terms of high cost, losing the lead only to electric appliances of heating. But at the same time, diesel heat supply has several advantages - autonomy, safety and easy maintenance:
- To heat the house, they decided to purchase a diesel boiler. Fortunately, we got acquainted with the specifics of its installation in advance. They correctly made a place for storing fuel, equipped a separate boiler room. The system works for the 2nd year flawlessly;
- I have been thinking about diesel heating for a long time. Having the opportunity to purchase fuel at a price lower than the market price, I came to the conclusion that it was time to change the boiler. Experts advised to purchase a diesel burner to make it cheaper. The difference with a solid fuel boiler is huge - the water in the pipes heats up quickly, almost full automation. The disadvantage is the high noise level from the fan;
- Our diesel boiler worked faithfully for two seasons. But at the end of the latter, they began to notice that water heating was slower. After calling a specialist, it turned out that the nozzle was clogged. Her cleaning returned the previous performance of the boiler.
For diesel heating, special attention must be paid to fuel quality.At the first stage, it is recommended to take small batches of fuel from different suppliers to identify the most suitable. Only after that it is possible to purchase large volumes of diesel fuel.
The video material describes the options for choosing a diesel boiler:
