The choice of a heat generator for heating and hot water supply of a country house depends on many factors, first of all, on the availability of a gas main. The use of a heating installation on liquid fuel is most often due to the lack of access to the centralized gas supply system.
Modern heating boilers, using diesel fuel as an energy carrier, have high efficiency and allow to ensure complete autonomy of the heating system of a private house. In addition, some models of diesel boilers can operate on fuel oil, waste engine oil and other liquid combustible mixtures, including liquefied gas.
The device and principle of operation of a diesel boiler
The design of units using liquid fuels as an energy carrier provides for the following main elements:
- Housings with built-in combustion chamber;
- A burner in which a combustible mixture is formed;
- One or two heat exchangers;
- Fuel pump;
- Filtration systems;
- Thermal sensors;
- Electronic control unit and settings.
The material for the manufacture of heat exchangers can be steel or cast iron. Some premium diesel boilers are equipped with heat exchangers made of high-alloy heat-resistant steels.
Principle of operation
The fuel entering the burner is mixed with air, thus forming a fuel mixture, which is sprayed through the nozzle in the combustion chamber. The completeness of fuel combustion depends on the correct adjustment of the burner itself and the quality of the nozzle. The fuel mixture that has entered the combustion chamber is ignited by a spark generated by an automatic control system (ACS), and the heat released during the combustion process is transferred to the coolant through the walls of the heat exchanger.
The coolant temperature is monitored by a system of temperature sensors installed in the combustion chamber. Upon reaching the set temperature mode, the ACS turns off the burner, and when the coolant is cooled, the combustible mixture is automatically ignited. The exhaust gases are discharged through the chimney.
Burners of diesel heating boilers can be fan and forced draft. In fan burners, overpressure is generated by a special built-in fan. The performance of such modules is quite high, but the operation of the units is accompanied by an increased noise level.
In forced draft burners, a turbine is installed instead of a fan. The use of turbocharging can significantly increase the productivity of the installation and achieve complete combustion of the combustible mixture. Exhaust gases can be removed from the combustion chamber both naturally, due to the draft generated in the chimney, and forcibly, using a fan.
Another design feature of a diesel fuel boiler for heating a private house is the possibility of changeover to work with other types of fuel, in particular, natural gas, for this you just need to replace the gas diesel burner.
Characteristics
- The wide range includes devices from 40 kW to 120 kW with a corresponding fuel tank capacity.
- They work on one of the most common types of energy sources - diesel.
- The body is made of stainless steel, which eliminates the factor of corrosion even in a poultry farm.
- The material of which the walls of the combustion chamber are composed will withstand many, many hours of combustion.
- The air flows freely through the heat generator, which produces a minimum of noise.
- Not a single foreign object gets into the fan, protected by a special mesh.
- Ignition from electricity allows the climate system to control the generator, as well as to protect workers in the event of manual control.
Advantages and disadvantages of diesel boilers
Like any other equipment, diesel boilers have their own strengths and weaknesses. The advantages of such units include:
- The device is fully automated and can function autonomously without operator intervention. The duration of continuous operation is solely due to the capacity of the fuel tank.
- With proper operation of the automation, boiling of the coolant is almost impossible, since the power of the installation can be instantly reduced to a minimum by turning off the fuel supply.
- When stored, liquid fuel takes up much less space than a supply of coal, firewood or pellets.
- Possibility of using waste oil and other liquid combustible waste as an energy carrier.
- Unlike gas boilers for heating a private house, the installation of diesel heating equipment does not require coordination with the relevant services and can be done on its own.
Along with these indisputable advantages, significant disadvantages should be noted:
- Since the operation of a diesel boiler without an automatic control system is impossible, it is necessary to ensure uninterrupted power supply to the installation. Despite the fact that electricity consumption is minimal, this still creates certain difficulties.
- The cost of standard diesel fuel for heating systems is significantly higher than the cost of wood and coal.
- To avoid fuel thickening at low temperatures, pipelines need high-quality thermal insulation.
- When storing fuel in an underground tank, in the event of a leak, soil and groundwater poisoning may occur.
- The need to create a boiler room, since the operation of a diesel installation is associated with an increased noise level and the possibility of unpleasant odors.
- Regular delivery of fuel and the organization of a special storage facility is required.
Despite the above disadvantages, diesel boilers are most widely used in summer cottages and private houses due to the possibility of autonomous operation, high efficiency and ease of installation.
Fuel consumption of diesel heating boilers
Since the cost of diesel fuel is quite high, fuel consumption is one of the most important characteristics of the installation. Excessive energy consumption leads to a significant increase in material costs for heating the house. Increased fuel consumption can occur due to the following reasons:
- Incorrect burner adjustment
... Complete combustion of fuel is possible only with the optimal ratio of fuel and oxygen in the combustible mixture, otherwise the consumption of diesel fuel increases significantly. - Fuel thickening
... With a significant drop in temperature and insufficient thermal insulation of the supply pipelines, the viscosity of the diesel oil increases, which inevitably leads to an increase in fuel consumption. - Failure of the nozzle or injector
... Under the influence of high temperatures, the injector nozzle gradually burns out, which leads to incorrect atomization of the combustible mixture and, as a result, to an increase in fuel consumption. - Climatic conditions
... In severe frosts, more diesel fuel is required to maintain a given temperature regime.
There are a number of ways to reduce diesel fuel consumption while ensuring the required temperature balance in the house, these include:
- Careful burner adjustment.The use of specially developed software allows to reduce the fuel consumption of a diesel heating boiler for a private house by 10-15%.
- The use of room temperature sensors and automation that monitors changes in external temperatures reduces fuel consumption by 15%.
- Thermal insulation of external storage facilities and supply lines.
- The correct choice of power characteristics of the unit.
When these conditions are met, the consumption of diesel fuel is reduced by 25 - 30%.
Determination of the average fuel consumption
At the household level, with a sufficient degree of accuracy, it can be assumed that with a power of 10 kW, a diesel boiler consumes 1 liter of fuel per hour, provided that the heat is consumed exclusively for heating the house. In the case of using a double-circuit boiler, the consumption of diesel fuel increases by an average of 30%.
Considering that to heat 10 m2 of living space, approximately 1 kW of thermal power is required for the efficient operation of the heating system in a house with an area of 100 m2, a heat generator with a capacity of 13 - 15 kW is required. Such an installation consumes 1.3 - 1.5 liters of diesel fuel per hour, therefore, from 30 to 32 liters will be consumed per day. Provided that it operates in the nominal mode for the entire heating season, the fuel consumption will be from 4.5 to 5 tons.
Purpose of diesel heat generators
A heat gun of this type can be attributed to the representatives of the group of autonomous liquid fuel heating means. Their autonomy is due to the lack of connection to the backbone networks, but it is important to take into account the dependence of the equipment on the power grid. These are heat generators for air heating, which are more often used in equipping factory complexes, in factories and plants, as well as in the maintenance of various technical premises.
The task of the installation is elementary and consists in the propagation of thermal radiation. Another thing is that energy is characterized by purposeful movement in the flow, although this feature is not always important during operation. It is one thing if it is required to provide heating for a specific industrial station, structure or equipment, and another thing if we are talking about the distribution of heat throughout the entire area of a workshop or work site. Another feature that distinguishes diesel heat generators is their high power. Combustion of fuel allows heating the target object in the shortest time intervals.
Criteria for choosing a diesel heating boiler
When choosing a diesel heat generator, special attention should be paid to the following aspects:
Thermal power of a diesel boiler. In general, it is generally accepted that for effective heating of an area of 10 m2 in the middle lane, 1 kW / h of thermal energy is needed, in cold regions this figure can be 1.3 - 1.4 kW / h.
The ability to adjust the temperature. There are three main types of liquid fuel plants:
With a single-stage burner, operating constantly at maximum speed;
With a two-stage burner capable of operating in 50 and 100% modes:
With an adjustable burner that allows for a wide range of settings, which significantly reduces energy consumption.
Fuel consumption. It is this indicator that determines the economic feasibility of using a diesel installation, in addition, on the basis of these data, it is possible to prepare in advance the necessary fuel supply for the entire heating season.
In addition, one should take into account the possibility of creating a DHW circuit and reconfiguring the installation to use natural gas, in the case of supplying a centralized line.
Features of maintenance of a diesel boiler
Even with a correctly adjusted burner, during operation, soot and ash settle on the inner surface of the combustion chamber and the surface of the heat exchanger.Even a small amount of these deposits significantly reduces the intensity of heat transfer, so a layer of soot with a thickness of 2 mm reduces the efficiency of the installation by 10 - 12%. To prevent this, it is necessary to regularly clean the combustion chamber, heat exchanger and flue pipe.
In addition, special attention should be paid to adjusting the burner, since the completeness of fuel combustion and, as a result, the amount of incomplete combustion products deposited on the walls depends on the correct ratio of fuel and oxygen in the combustible mixture.
It is also important to timely flush or replace the air / fuel nozzle to ensure maximum performance. The use of high-quality fuel can significantly reduce the deposition of soot and ash on the walls of the heat exchanger and combustion chamber.
Timely cleaning of the device and correct operation will extend the life of the diesel boiler and ensure the efficient operation of the heating system.
Top 5 best diesel boilers
At the end of 2020, the following models of diesel heating units for a private house were in greatest demand:
ACV mini
The device is compact and economical. The connection to the boiler allows for efficient hot water supply, and the ease of maintenance and reliability have made the installation very popular. The model is equipped with a thermostat, a thermomanometer and a winter-summer dual-mode regulator to reduce fuel consumption. The door of the combustion chamber is removable, which greatly simplifies the maintenance of the installation, and high-quality thermal insulation with mineral wool reduces heat loss.
Specifications:
| Parameters | Units | Value |
| dimensions | mm | 575x375x500 |
| Weight | Kg | 65 |
| Chimney diameter | mm | 80 |
| Heating area | m2 | 150 |
| Thermal power | kw | 16 |
| Working volume | l | 17 |
| Price | Thousand. rub. | 46 |
De Dietrich GT 123
The unit is distinguished by high performance and high coolant temperature. The diesel boiler is equipped with a three-way exhaust gas exhaust system, a turbulizer and asymmetric channels located horizontally, which makes it possible to increase the efficiency of the combustion products removal.
Specifications:
| Parameters | Units | Value |
| dimensions | mm | 840x575x1065 |
| Weight | Kg | 135 |
| Working volume | l | 19 |
| Thermal power | kw | 21 |
| Chimney diameter | mm | 125 |
| Heated area | m2 | 190 |
| Price | Thousand. rub. | 72 |
Buderus Ljgano G125-40 SE
The installation is extremely demanding on the quality of diesel fuel, the fuel used must comply with European standards, in particular DIN 51-630. A branded boiler can be provided as an optional extra.
The device is distinguished by high durability and reliability in operation, as well as simplicity and ease of control and adjustment. Connection to various exhaust gas systems is provided. In addition, the noise level during operation is significantly reduced.
Specifications:
| Parameters | Units | Value |
| dimensions | mm | 915x605x1125 |
| Chimney diameter | mm | 130 |
| Rated power | kw | 40 |
| Mounting method | Floor | |
| Heat exchanger | Cast iron | |
| Combustion chamber type | Open | |
| Price | Thousand. rub. | 122 |
Kiturami Turbo HIFIN - 17
The installation is a double-circuit oil heating boiler that provides effective heating of a room of 190 m2 and installation of a DHW circuit. The unit is equipped with separate heat exchangers.
Specifications:
| Parameters | Units | Value |
| Dimensions (edit) | mm | 705x330x605 |
| Weight | Kg | 40 |
| Efficiency | % | 89,7 |
| Chimney diameter | mm | 80 |
| Rated power | kw | 19,9 |
| Fuel consumption | kg / h | 2,15 |
| Price | Thousand. rub. | 34 |
Navien LST 21K
An economical heating system designed to heat a dwelling up to 210 m2 and provide hot water supply.The device is characterized by high performance and reliability, however, the electronic control system is very sensitive to voltage surges; during installation, it is recommended to connect to the network through a stabilizing device.
Specifications:
| Parameters | Units | Value |
| dimensions | mm | 754x320x520 |
| Weight | Kg | 51 |
| Efficiency | % | 90 |
| Chimney diameter | mm | 75 |
| Thermal power | kw | 21 |
| Fuel consumption | kg / h | 2,52 |
| Price | Thousand. rub. | 34 |
In addition to the official rating data, compiled on the basis of data provided by the sales departments of various sales representatives, when choosing a boiler for organizing diesel heating in a house, it will not be superfluous to read the reviews of the owners of such equipment.
Diesel heat guns Caloric
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- Diesel heat guns of indirect heating
Popular configurations
Liquid-fuel heat generators Teplorod generate a large flow of heated air, sufficient to heat a large area. A powerful fan will quickly blow heated air into the room. Diesel operation. Designed for industrial and semi-industrial purposes.
Selection of equipment by parameters Sort by price Table Pictures
Diesel heat guns Indirectly heated caloric
Mobile liquid fuel air heaters Caloric can be used as a permanent or temporary source of air heating. Thanks to the powerful fan and the rapid heating of the heat exchanger, indirectly heated diesel heat generators are able to heat industrial premises or construction sites. The presence of wheels in the kit allows you to move the heaters to the desired location. Includes fuel hoses.
| Name | Power, kWt | Ventilation (m³ / hour) | Energy source of heat guns | 220 / 380V | Dimensions w / h / d | Price |
| Industrial air heater Teplorod NP 60A | 60 | 3500 | diesel indirect heating | 220 | 123/103/63 | RUR 142,308 |
| Industrial air heater Teplorod NP 120A | 120 | 8500 | diesel indirect heating | 180/135/85 | RUB 184 788 | |
| Industrial air heater Teplorod NP 150A | 150 | 9500 | diesel indirect heating | 180/135/85 | RUB 211 692 | |
| Industrial air heater Teplorod NP 30A | 32 | 1700 | diesel indirect heating | 220 | 100/100/52 | Price request |
Modular Diesel Air Heaters Teplorod
Heat generators Teplorod is an irreplaceable equipment for heating industrial facilities and premises. High-pressure fan, sealed combustion chamber, control unit with microprocessor thermostat. Diesel burner of European quality. The warranty is 1 year.
| Name | Power, kWt | Ventilation (m³ / hour) | Energy source of heat guns | 220 / 380V | Dimensions w / h / d | Price |
| Heat generator Teplorod NPM 200R | 200 | 14000 | diesel indirect heating | 260/165/85 | RUB 292,404 |
Diesel supply and supply exhaust units Teplorod
Diesel supply and supply exhaust units Teplorod are designed for operation in supply and exhaust ventilation or air heating systems. Supply units consist of two units, supply and exhaust units of three units. The units are classified as indirectly heated diesel heat generators. Equipped with an oil burner as standard. The warranty is 1 year.
| Name | Power, kWt | Ventilation (m³ / hour) | Energy source of heat guns | 220 / 380V | Dimensions w / h / d | Price |
| Industrial air heater Teplorod NPM 200R PU | 200 | 18000 | diesel indirect heating | 185/250/120 | RUB 455 952 | |
| Industrial air heater Teplorod NPM 250R PU | 250 | 24000 | diesel indirect heating | 185/250/120 | RUB 523,920 | |
| Industrial air heater Teplorod NPM 200R PVU | 200 | 18000 | diesel indirect heating | 355/250/120 | RUB 628 704 | |
| Industrial air heater Teplorod NPM 250R PVU | 250 | 24000 | diesel indirect heating | 355/250/120 | RUB 712,248 |
Diesel autonomous heat generators Teplorod
The main purpose of autonomous air heaters Teplorod is to create a high-pressure flow of heated air.Diesel air heaters of the C series have special additional functions that allow the use of heat generators as a temporary autonomous source of heat supply or in case of emergency elimination. They are available in several versions. The warranty is 1 year.
| Name | Power, kWt | Ventilation (m³ / hour) | Energy source of heat guns | 220 / 380V | Dimensions w / h / d | Price |
| Autonomous air heater Teplorod C 120 without chassis | 120 | 4500 | diesel indirect heating | 380 | 275/138/128 | RUB 737,736 |
| Autonomous air heater Teplorod C 120 with springless trolley and turntable | 120 | 4500 | diesel indirect heating | 380 | 275/138/128 | RUB 849,600 |
| Autonomous air heater Teplorod C 175 without chassis | 175 | 9000 | diesel indirect heating | 380 | 300/157/144 | RUB 892,080 |
| Autonomous air heater Teplorod C 175 with a springless trolley and a turntable | 175 | 9000 | diesel indirect heating | 380 | 300/157/144 | RUB 990 492 |
| Autonomous air heater Teplorod C 350 without chassis | 350 | 18000 | diesel indirect heating | 380 | 332/165/154 | RUB 1,274,400 |
| Autonomous air heater Teplorod C 350 with springless trolley and turntable | 350 | 18000 | diesel indirect heating | 380 | 332/165/154 | RUB 1,430,160 |
| Autonomous air heater Teplorod C 175 with a platform trailer | 175 | 9000 | diesel indirect heating | 380 | 300/157/144 | RUB 1,540,018 |
| Autonomous air heater Teplorod C 350 with a platform trailer | 350 | 18000 | diesel indirect heating | 380 | 332/165/154 | RUB 1,890,360 |
| Autonomous air heater Teplorod C 175 DG without chassis | 175 | 9000 | diesel indirect heating | 380 | 300/157/144 | RUB 1,968,240 |
| Autonomous air heater Teplorod S 175 DG with springless trolley and turntable | 175 | 9000 | diesel indirect heating | 380 | 300/157/144 | RUB 2,053,200 |
| Autonomous air heater Teplorod S 175 DG with a platform trailer | 175 | 9000 | diesel indirect heating | 380 | 300/157/144 | RUB 2 612 520 |
Diesel heat guns from a domestic manufacturer. Modular, autonomous, supply and supply and exhaust models. The combustion and fuel supply processes, as well as air heating are controlled by a special heater control unit. High power and performance. Reliability of all components. Safe work. Long service life. Caloric gets only positive consumer reviews. They work flawlessly.
For purchase questions, please contact the sales managers of the Aerostandart company. We carry out delivery in St. Petersburg, Moscow and in the regions.
Reviews of diesel heating boilers for private houses
1. We decided to purchase a diesel heat generator for heating the country house, since there is no gas supply in the village and is not expected in the near future. The price of a diesel boiler at the time of purchase was about 35 thousand rubles, which is quite commensurate with our budget. I installed the boiler myself and there were no significant difficulties. Now, for two years now, the house is warm and cozy, we are very pleased with the purchase.
2. Since there is no centralized gas supply in our village, we had to look for alternative options. Electric boilers disappeared immediately, since power outages are not uncommon in our country. Of the remaining options, we settled on a Navien LFA 21K double-circuit diesel boiler. As time has shown, the choice was absolutely correct, for 4 years now there have been no problems with heat and hot water.
3. It is very good that when installing a diesel boiler in a house, it is not necessary to equip a special chimney! We installed the unit in a separate annex next to the house, and we brought out a sandwich pipe through the wall to the street. The turbine copes well with the removal of gases and we do not feel any unpleasant odors. In terms of performance, the unit provides enough heat and besides, there is no hot water interruption.
4. The year before last, a diesel boiler ACVNmini was installed. In general, there are no significant complaints, unless it makes noise. This year I will make soundproofing from plasterboard with mineral wool lining and then it will be very good.
The use of units operating on liquid fuel as a heat generator is quite justified in the absence of centralized gas supply.In addition, unlike solid fuel boilers, the duration of a diesel boiler in autonomous mode is limited exclusively by the capacity of the fuel tank.
How much does a diesel heat generator cost?
The technique is very diverse in cost, and the price tags depend on many operating parameters. For example, a heat generator, the price of which is within 10 thousand rubles, has a low power indicator and a small tank volume. In addition, such units are rarely provided with multifunctional control relays.
The higher segment already provides not only improved performance, but also the presence of modern technologies. As an illustration, we can cite the Master diesel heat generator in the B 100 CED version, which is provided by a flame control system with a photocell. Aggregates of this type cost about $ 30,000.
