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.
How to choose the right heat gun?
The choice of a heat gun primarily depends on the target heating area and the design capabilities of the equipment installation. As for the first criterion, power, diesel tank volume and performance are matched to it.But not every generator suitable in terms of performance can be installed in the room for which it was selected. It is important to consider the principle of operation. So, a diesel-fueled heat generator with direct heating is suitable for a production workshop, and models with the output of combustion products to the street can be used in residential premises.
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 is capable of operating 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.
- During storage, 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.
Heater complete set
All heaters are supplied with:
- mobile air heater;
- user's manual;
- packing box;
- two wheels;
- frame for mounting wheels;
- axis;
- back handle;
- bolts, nuts and fixing caps.
Diesel heat guns are powerful fan heaters that use diesel fuel or kerosene as fuel. Thermal diesel cannons are divided into direct (without chimney) and indirect heating (with combustion products removal). Combustion products from the operation of a direct diesel cannon go directly into the air of the heated room. Therefore, it is advisable to use them as heaters in non-residential premises with good ventilation. In such premises, their use is very profitable due to their economy and high efficiency.
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.
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.
Gas air heaters for supply units
Gas heaters are gas heat exchangers complete with additional devices and automation. They are designed to complete supply units for heating and / or supply ventilation with direct air heating due to gas combustion in the heat exchanger chamber.
Gas duct heater with forced removal of combustion products Modine DFP | Gas duct heater Modine HFG for outdoor use | Gas duct heater with natural smoke exhaust Modine DFG |
Gas duct heater with a closed combustion chamber |
Local air heaters
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 unit, 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 characterized 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 operation and adjustment. Connection to various exhaust 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.
Air heaters for agriculture - diesel, water, gas
Unlike heat generators, which can be classified as industrial and domestic, air heaters are used only in industry for heating premises in greenhouse complexes, workshops, warehouses, livestock complexes, poultry houses, industrial buildings and other technical premises. The choice of the air heater is carried out at the time of designing the heating. What are they?
Air heaters are equipment designed to heat air in an air heating system and they differ in their technical characteristics, including power. Also, their main difference is the type of fuel consumed - the most popular air heaters can be gas, diesel and water. Let's consider the features of these three types of heaters using the example of Holland Heater equipment.
1. Diesel air heater
This type of air heater is highly efficient and reliable; it is mainly used for heating livestock farms, food warehouses, storage facilities, and household premises. Its advantage is 100% efficiency, which significantly reduces energy consumption, and due to direct heating, warm air completely enters the room. The model in the Holland Heater line is a fan that can be connected to a climate computer. This air heater provides an air jet of 40 meters at a rated load of 80 to 120 kW (depending on size). This fan is capable of moving about 7,700 cubic meters of air per hour. The motor power is 1150 watts, the number of revolutions is 1400. This fan is equipped with a special noise suppression ring and a safety photocell. If the photocell detects the ignition of the air heater, the system will stop supplying the diesel engine. Also, the air heater is equipped with LED indicators that indicate the state of the device and identify malfunctions.
Additional advantages of a diesel air heater are its compactness - the weight with an empty tank is only 55 kilograms, and the dimensions are 664x591 mm. Also, diesel air heaters work economically, are easy to operate and maintain, quickly heat up the air in the room. Despite the fact that we describe the features of this type of heaters using one model as an example, these advantages are also characteristic of heaters of other brands. The disadvantages of such devices can be attributed to the relative noise of their operation, and, despite the fact that Holland Heater added a muffler ring, this fan cannot be called completely silent.Also, some manufacturers believe that the cost of diesel fuel is quite high - you cannot argue with that, but this is not the manufacturers' fault.
2. Water air heater
The HHW series hot water heater is positioned as a heater for poultry farms, but it has many advantages that allow it to be used for different needs of agricultural complexes.
Due to water heating, such an air heater does not require oxygen for combustion, therefore, no complex ventilation system is required, ventilation can be minimized. By reducing ventilation, heat loss is also reduced. This air heater mixes fresh air with minimum ventilation with air directly under the roof and distributes it using a variable frequency fan. A hot water heater creates a healthy indoor climate, equalizes temperature differences (vertical difference less than 0.5 ° C), lowers air humidity (which is important for poultry houses, where straw and manure remain dry, which makes cleaning easier). Also, such an air heater reduces ammonia emissions from the level of droppings, the formation of CO2 and water vapor. The thermal power of the described model is from 50 to 70 kW (depending on the size), with the possibility of "driving" about 7400 "cubes" of air per hour. Water consumption per cubic meter per hour is 2.9-4.12 (depending on model size). The advantage of this heater is also the adjustable 6-sided air distribution unit, due to which the air speed in all directions is the same.
3. Gas air heater
Gas air heaters are used most often in production, as they are easy to maintain, durable and practically silent. You can connect such an air heater to a climate computer.
Due to the closed combustion system, oxygen is not burned inside the room, which is suitable for using this model in rooms for various purposes. The flue gas removal system reduces ventilation costs and prevents the ingress of CO2 and water vapor into the heated room. Also, the IFH gas heater in the Holland Heater product line has an increased efficiency due to the design of the double-walled chimney. In this case, the combustion air that is drawn in is preheated by the flue gases. Cleaning the block is simple and does not require additional funds for the purchase of consumables and remuneration of special workers. This model provides optimal distribution of air vertically and horizontally, leveling temperature differences (vertical difference no more than 0.5 ° C). It successfully copes with the movement of 5500 to 10800 cubic meters of air per hour (depending on the model's features) and consumes from 3.8 to 8.3 kg / h of gas (propane). The weight of the installation is from 108 to 195 kilograms for models of various capacities.
In conclusion, I would like to note that the use of air heaters due to their high performance and large assortment has become not only convenient, but also affordable. In this article, we have reviewed the three most popular types of air heaters for agriculture and livestock farms. There are also heat generators operating on peat, sawdust, fuel briquettes and coal.
Now manufacturers can choose from several models one that is most suitable in terms of power, size, type of fuel and other parameters. Choosing the right water heater is always a difficult task, as there are so many individual criteria. Experienced specialists of our company will help you make the right choice, taking into account all the features and technical parameters of your production and will advise on all issues of installation, maintenance, purchase and delivery.
Reviews of diesel heating boilers for private houses
one.They 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.
Diesel heat generator ТГВ-250 on ZZBO frame
Description
The heat generator TGV-250 is used for the operation of the RBU concrete plant in winter. Based on the hot air principle. Designed for heating inert materials in the process of receiving concrete at ambient temperatures up to minus 30C. The heat generator supplies heated air with a temperature of at least 150C under high pressure to the air ducts connected to the bunkers. The thermal power of the installation is 250 kW, which ensures the operation of a concrete plant with a capacity of up to 60 cubic meters per hour. The installation uses indirect heating, in which heat from the flue gases is transferred to the air through the furnace wall and heat exchanger tubes. Those. combustion products do not get into inert and, accordingly, inside the plant.
The heat generator consists of an Italian-made diesel burner (optionally, the heat generator is equipped with a gas burner), a high-pressure fan, a furnace, a heat exchanger, a control and automation panel. The heat exchanger and combustion chamber are made of stainless steel. The unit is equipped with a 600 liter fuel tank. That provides work without refueling for 24 hours. The unit is supplied either separately on a frame for indoor installation or in a separate block-box. Air ducts are optionally supplied for connecting the heat generator to the dosing complex. The heat generator is used in electrified areas (autonomous operation is optionally possible).
Distinctive features:
- Instant start - one minute before work
- Heats and dries quickly inert
- Low fuel consumption
- Fuel type diesel (optionally gas)
- Heat exchanger and firebox made of stainless steel
- Not subject to registration with RosTechnadzor
- Automatic mode, high efficiency - 90%
Installation characteristics:
- Thermal power, kW 250
- Air consumption at the outlet, m3 \ hour 4500
- Fan head, Pa 12000
- Outlet air temperature, not less, С ° 150
- Time to reach operating mode, sec 120
- Fuel type diesel (optionally gas)
- Fuel consumption, l / hour 10-25 Efficiency,% 90
- Installed power, kW 23
- Operating temperature, С ° -35 ... 40
- Weight, no more, kg 4000
- Height, mm 2700
- Width, mm 2050
- Length, mm 4655
Basic equipment:
- Heat generator TGV-250.
- Stainless steel heat exchanger and combustion chamber
- Diesel burner Unigas (Italy) (optional gas)
- 3.50 GPH-60 ° nozzle - 2 pcs
- Fan VR 6-13M-8 (Russia). Power 22 kW
- Multi-stage safety system
- Fuel tank with visual level control. Volume 600 liters
- Control panel automatic
- Power control cabinet
- Block container with door and viewing window
- Passport for TGV-250
Our company does not sell used diesel heat generators, we only sell NEW diesel heat generators of Russian quality. Our products are protected by quality certificates. New diesel heat generators will serve you much longer than used diesel heat generators. Therefore, overpaying just a little for new diesel heat generators - you get a product with a warranty period and with a longer service life for you!
Check with the manager for availability!
