Heating a private house with diesel boilers is one of the ways to organize heat supply. For self-development of the scheme, selection and installation of equipment, you will need knowledge of the basic principles and rules. 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 consumption of energy. Particular attention is paid to the quality of the fuel, its composition and storage organization.
The consumer should know how diesel heating boilers work. The boiler has a burner that is similar to that of a diesel engine. After filtration and heating, the fuel under pressure enters the nozzle, where fine atomization takes place. Air is injected to maintain the combustion process. After igniting the mixture, a uniform flame is formed. The combustion intensity is adjusted by decreasing (increasing) the supply of fuel and air.
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 value... Modern diesel heating boilers are equipped with efficient turbo-cyclone burners. They provide afterburning of carbon monoxide gases, thereby optimizing fuel consumption;
- Operational safety... All Kiturami diesel heating boilers have a multi-stage safety system. Unlike gasoline, diesel fuel does not emit a large amount of vapor for ignition outside the burner;
- No need to issue permits for installation and further operation for floor or wall mounted diesel heating boiler.
In many ways, these qualities are influenced by the connection diagram of diesel heating boilers and the observance of operating rules.
However, heating a house with diesel fuel is impossible without the following negative factors:
- The complexity of organizing fuel storage, its additional cleaning and the system of feeding into the burner;
- Specific smell. Heating a private house on diesel fuel will not be completely sealed. In any case, a small part of the vapors will enter the room;
- Noise. Diesel boiler models with fans create a high noise level. It is smaller in designs with turbines, but it is still present;
- Ensuring storage conditions for the energy carrier. The specificity of diesel fuel is to increase its 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 have added a fuel preheating chamber to the burner design.
Independent design of this type of heat supply involves calculating the consumption of diesel fuel for heating a house, selecting the optimal boiler model. But first, experts recommend that you familiarize yourself with the proposed designs.
The diesel burner can be installed in a conventional solid fuel boiler. It is important that the heat exchanger is designed for the high combustion temperature of diesel fuel, the dimensions of the combustion chamber correspond to the dimensions of the burner.
Classification of diesel boilers for heating
The choice of economical diesel heating boilers should be based on their characteristics. In addition to technical qualities, operational and functional are taken into account. One of the features of this type of heating devices 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 burner operation - the diameter of the chimney, the volume of the combustion chamber and the method of air injection. Therefore, experts recommend stopping the choice on factory diesel heating boilers.
Structurally, they may differ in the following ways:
- The presence of a second circuit for hot water supply... While operating, diesel heating boilers will heat water for hot water supply in the second heat exchanger. The only negative is ineffective use in the summer;
- Installation method - floor or wall mounted diesel heating boiler... It depends on the rated power - as it increases, the dimensions grow. Accordingly, boilers with high power can only be in a floor-standing version;
- Heat exchanger material... Steel structures have less resistance to heat transfer, but have a relatively short service life compared to cast iron;
- Burner type - single or turbocyclone... Almost all reviews on diesel heating boilers with a turbocyclone burner indicate low noise levels and fuel economy.
In addition, there are so-called diesel heating guns. Using them for constant heat supply is impractical. They are designed to promptly raise the room temperature.
By installing a heat accumulator in the heating of a private house on diesel fuel, you can provide hot water even for a boiler with one circuit.
Overview of heating schemes with diesel boilers
The choice of the boiler model is influenced by the heat supply scheme, developed independently or by specialists. The simplest option involves the installation of a safety group and other heating components: radiators, pipes and an expansion tank.
In practice, they strive to reduce the costs of the coolant. Therefore, together with Kiturami diesel heating boilers, alternative heat supply is installed - solar collectors, PLEN or geothermal equipment. This reduces the inertia of the system, fuel consumption and increases efficiency.
Another way to optimize heating costs is to install a storage tank. This should be a model for indirect water heating. The principle of operation of heating a house on 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 must be taken into account:
- 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 this takes into account the fuel consumption of diesel heating boilers - the more powerful the model, the more it is;
- For the connection diagram for diesel heating boilers, the manufacturer's recommendations are taken into account first;
- Location of a Navien diesel heating boiler or another brand. This room should not contain flammable materials, including diesel fuel. A separate boiler room is required.
Some of the negative reviews on diesel heating boilers are associated with non-compliance with these recommendations. The choice of a heat supply scheme is taking into account all the 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 is required for the pump and fan (turbine) to function.
Fuel consumption calculation for diesel boilers
To plan the current costs of heat supply, it is necessary to know the consumption of diesel fuel for heating the house. This data can be taken from the technical data sheet of the equipment or you can 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 defining 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, it is necessary to multiply the calculated power obtained by a safety factor of 1.2. If the expansion of the system is planned (installation of new pipelines and radiators), there will be no need to purchase an additional boiler or change the already installed one.
The average consumption of diesel fuel for heating a house is 1 kg to generate 10 kW of energy. Heating 10 m² of living space will require 1 kW of heat. As an example, you can make calculations of the fuel consumption of 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 work 15 hours a day, the consumption will be 22.5 kg. Typically, the duration of the operation of heating a house on diesel fuel 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 floor or wall mounted diesel heating boiler... The higher it is, the more economical is the fuel consumption;
- Heat loss of the building... In fact, the work of diesel heating boilers is aimed at compensating them. It is possible to reduce this indicator by insulating the outer walls of the house;
- Fuel quality... The presence of foreign impurities leads to premature clogging of the burner nozzle and the formation of a layer of soot on the chimney. Therefore, it is necessary to pre-clean the fuel before entering the diesel-fueled boiler.
But the determining factor in the savings is the boiler design. To reduce heat losses, manufacturers make a double case, install modern systems for monitoring fuel consumption and equipment safety. Models of diesel heating boilers of the Kiturami trademark have such features.
One of the most productive ways to optimize fuel consumption is to install thermostats on heating batteries. Thanks to them, the cooling rate of the coolant can be significantly reduced and, as a consequence, the fuel consumption to increase its temperature.
Diesel heating gun: design and scope
During repair or construction work, it may be necessary to quickly warm up the premises. This can be done with a diesel heating gun.It differs from electric and gas counterparts in high power, efficiency and safety of work.
The diesel heat gun consists of a fuel tank, fuel pump, burner and fan. Hot air passing through the nozzle heats the air in the room. Such a design can provide a rapid rise in temperature in a room or a certain part of it.
It is not recommended to use heat guns of this type for heating a private house using diesel fuel for the following reasons:
- Loss of combustion products into the room. This leads to an increase in the concentration of CO2;
- Heating of only one room is possible;
- Low efficiency rate;
- The heat gun cannot be adapted to hot water supply as in the connection diagrams for diesel heating boilers.
During the operation of the heat gun, according to safety regulations, there must be good ventilation in the room. For mobility, many models have wheels for quickly moving the structure around the house.
The purchase of a diesel cannon for temporary operation is impractical. The average cost of a 20 kW model is about 24 thousand rubles. The best option is to rent it.
Diesel heating boiler manufacturers
The reliability of heating boilers directly 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 must be considered that indirectly affect the choice. One of them is the availability of manufacturer's service centers for servicing their products. These can be representative offices of official dealers. For example, when buying a Navien diesel boiler for heating, you can count on professional technical and consulting support.
In addition, you should pay attention to the following factors:
- Warranty 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 for the production of 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 |
Double-circuit models are extremely rare. To provide DHW, an indirect heating tank can be installed, which is much cheaper than purchasing an exclusive diesel heating boiler.
Before purchasing a boiler, it is necessary to check with the seller for the availability of certificates for heating equipment.
Reviews of diesel boilers
With a deep analysis of reviews on diesel heating boilers, one can single out their one significant drawback - expensive fuel. Compared to other energy sources in terms of high cost, it ranks second, yielding leadership only to electrical heating appliances. But at the same time, diesel heat supply has a number of advantages - autonomy of operation, safety and simple maintenance:
- We decided to purchase a diesel boiler for heating the house. Fortunately, we familiarized ourselves with the specifics of its installation in advance. We made the right place for storing fuel, equipped a separate boiler room. The system has been working for 2 years without any complaints;
- 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 buy 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 complete 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 is slower. After calling a specialist, it turned out that the nozzle was clogged.Cleaning it returned the boiler to its previous performance.
For diesel heating, special attention must be paid to the quality of the fuel. At the first stage, it is recommended to take small batches of fuel from different suppliers to identify the most suitable one. Only then can large volumes of diesel fuel be purchased.
The video describes the parameters for choosing a diesel boiler:
