Fast heating of the room is possible with the help of special heating equipment. In addition to stationary devices, there are also mobile thermal stations. Their principle of operation is based on the creation of a powerful heat flux, which in a short time raises the room temperature to the required value. Such a need may arise during construction and repair work, in order to comply with temperature regime in production.
The most popular type of such equipment is heat guns. Depending on the type of energy carrier, they can be gas, electric or diesel. The latter are the most popular as they can work offline. But when a diesel engine is running, exhaust gases and combustion products are emitted. In order to protect people in the room, we have developed special view diesel cannon with indirect heating.
Structurally, it is a movable platform, in the lower part of which there is a fuel tank and a supply system to the upper cone chamber.
With the help of a pump, the fuel is dosed into the combustion chamber, which is located in the main cone of the "pipe in pipe" type. The small chamber is completely isolated from the external environment, with the exception of the carbon monoxide removal system. In the process of burning diesel fuel, the walls of the inner chamber are heated. At the same time, the fan starts to work, which creates an air flow passing over the surface of the inner chamber. In the process of its movement, heat from the walls is transferred to the moving air and further into the premises.
The advantages of such an operational heating system:
- High rate of temperature rise.
- Long operating time without refueling - up to 10 hours.
- Independence from the availability of the main heat carriers - gas, electrical network with a large power reserve.
- Mobility.
- Possibility of installation.
The main characteristics for these heating devices are:
- Thermal power - 21 to 220 kW.
- Tank volume and fuel consumption in different operating modes.
- The area of the heated room. This parameter is given without taking into account the height of the ceilings and the area of window structures.
- Air flow volume in 1 time.
Despite its narrow focus, there are many manufacturers on the market that offer different types heat guns working on diesel fuel.
Manufacturers and prices
Oklima
The Italian company "Biemmedue" has been producing special heating equipment for over 30 years. On Russian market heat guns of this brand represented by Oklima models.
This is one of the most compact models, which is reflected in her low power... The maximum heating area is 200 m². complete with wheels for easy transportation and fast travel inside buildings ..
Specifications:
Cost - from 54 thousand rubles.
This thermal installation is designed for heating large area(up to 800 m²). In addition to high power, it has good characteristics security. Installation method - suspended.
Technical specifications:
Cost - 102 thousand rubles.
Master
The products of the Master company (USA) are one of the most demanded. This is due to the high quality, performance and ease of management.
For heating small industrial or residential premises, you can use this model. The maximum area is 200 m². The design is equipped with wheels for greater maneuverability and mobility. As additional equipment you can install a thermostat.
Specifications:
Cost - 52 thousand rubles.
One of the most powerful diesel engines, designed for an area of up to 2100 m². Despite its large size and weight, it can be easily moved - the convenient wheelbase allows you to do this even in confined spaces.
Technical specifications:
Cost - 320 thousand rubles.
Choice the best option a heat gun should be based on the following factors:
- Rent or purchase. If the frequency of its use is low, then it is best to rent a convenient model.
- Power. The maximum possible heating area directly depends on this parameter. you can use a simple ratio of 1 kW = 10m ².
- Possibility of exhausting combustion gases outside the premises. It is worth considering in advance the location of the gun and the installation of pipelines through which gases will be removed outside the building.
For heating hangars, tents, sports and exhibition halls, agricultural and livestock complexes, as well as other large industrial and construction projects for various purposes used by heat gun... It is a mobile powerful air heater. In the body of the gun is installed a special a heating element The combustion chamber is made of heat-resistant alloy steel. The outer casing almost never heats up due to the high air flow quickly passing through the diesel heater. The wear-resistant outer coating of the gun body is designed for long-term operation of the diesel air heater.
Depending on the method of heating the heating element, there are 4 types of heat guns:
- diesel heat guns;
Heat guns gas;
Heat guns without power regulation;
Heat guns direct heating.
Available in two types diesel heat guns : direct and indirect action. D izelnuyu heat cannon direct action can be used to heat the air only in the absence of people, animals, etc. in a heated room. This requirement is due to the fact that the air repeatedly passing through the heat gun loses oxygen and is saturated with the products of its combustion.
Indirect heating air heaters are distinguished by the absence of combustion products emissions into the heated room, and can be used in places where people are located. Diesel cannons of indirect action have a special heat exchanger, which ensures the removal of harmful emissions outside the heated area, while clean heated air enters the working room. Powerful air heaters of indirect action, working with diesel fuel, have a control system over the burner flame. To achieve complete combustion of the fuel, a flame control mechanism is provided. Also, all units are equipped with overheating protection. Automatic maintenance of the set temperature is provided by a built-in thermostat, which is supplied with most models of diesel air heaters.
Diesel heat gun, there is enough fuel, with non-stop operation, for 8-16 hours, depending on the model and the volume of the fuel tank.
Diesel heat gun during operation, it creates a powerful directed stream of hot air, the outlet temperature of which reaches 255 degrees (depending on the model and type of product). The process of heat transfer from the air heater occurs almost instantly. High performance and forced circulation air when using a heat gun allows you to quickly heat up and maintain a given temperature in a large room.
If you need to heat a workshop (workshop, garage, change house, hangar), or you cannot continue repairs in winter due to low temperatures and high humidity in a building, or your car will not start in severe frosts, then diesel heat guns will become an indispensable thing in this matter.
At its core, a heat gun is heat generator for space heating. In it, the air stream is heated by the combustion of liquid fuel. It consists of a cylinder with a built-in fan, pump, nozzle and burner. At the very bottom is the fuel tank. The operating principle of a diesel heat gun is simple:
- from the tank, with the help of a pump, fuel enters the nozzle;
- a combustible mixture begins to spread from the nozzle under pressure;
- the fuel in the chamber ignites;
- the fan pumps air through the cylinder;
- at the exit we get a stream of highly heated air.
The diesel heat gun is of 2 types:
- Heat generator of direct heating.
- Heat generator of indirect heating.
Direct heating generator
Diesel direct fired heat gun is not equipped with a chimney and has the simplest design. Therefore, direct-flow heaters are inexpensive, compact, easy to use and reliable. The fuel is ignited using a spark plug, in some models - from electrical arrester... The heated air stream, together with the exhaust gases, enters the building that needs to be heated.
The use of such a heater is possible only in non-residential buildings with a good ventilation system or on construction sites (open).
The design of a diesel direct heating system is shown below.
Heat generator of indirect heating
A diesel heat gun of indirect heating is used in all cases as a direct-flow one. But due to the fact that the gases are discharged to the outside, the range of its application expands significantly:
- in construction;
- agriculture;
- in production workshops;
- for drying plaster (putty) during the cold season;
- heating concrete;
- drying of facades during facing works;
- for warming up trenches;
- heating greenhouses, livestock farms;
- heating of living quarters and other things.
The design of diesel heat guns with exhaust gas removal contains a closed chamber in which fuel is burned and a chimney. The fuel is supplied under pressure to the nozzle, in the chamber it is sprayed in the form of an aerosol and ignites. Air is blown inside the unit by a fan. To maintain the combustion process, part of the air enters the chamber through the holes located at the back. The rest of the flow moves between the heater casing and the combustion chamber, where it is heated. The smoke leaves the chamber through the chimney and is discharged outside, bypassing the room.
The use of such diesel heat guns is permitted for heating garages, rooms with people in them, and pavilions. But during the operation of the heater, oxygen burns out, so you need provide ventilation to compensate for its loss.
A liquid fuel heat gun can also be multi-fuel. This means that the unit is capable of operating on waste oil, gasoline, diesel fuel, kerosene. Often this type of heaters are used in places with a sufficient amount of oil products and their waste. It can be: warehouses of fuels and lubricants, vehicle fleets or car services. At the same time, the problem of utilization of waste fuels and lubricants is solved and heating is obtained free.
The figure below shows the operation of a multi-fuel generator.
Diesel infrared guns
The oil-fired infrared heat gun heats large rooms with high economy and efficiency. It can also be successfully used outdoors. This type of heat generator heats the objects themselves, towards which it is directed. Air heating occurs from objects heated by rays, and the height of the ceilings in the room does not play a significant role. Due to these characteristics, significant fuel savings are obtained.
Applying this property, it is convenient to heat up objects in the open air.
How to choose a heat gun
Before choosing a heat gun, there are several important points to consider.
Most heat guns have a handle temperature control, with which you can adjust the operation of the unit to the set temperature in the room, after which it turns off. The device does not turn on if the temperature on the display is set lower than in the room. Also diesel heaters are equipped with overheating protection system.
How the power of the heat gun is calculated
The thermal power of the apparatus is calculated by the formula: V * T * K = kcal / h, where:
- V is the volume of the room (width * length * height), in m3;
- T is the difference between the temperature outside and inside the room, in degrees Celsius;
- K is the heat dissipation coefficient.
For different types of premises, the values of the coefficient are set:
- from 3.0 to 4.0 - a room in which thermal insulation is not provided, for example, a structure made of wood or sheet metal;
- from 2.0 to 2.9 - a room with poor thermal insulation. Simple building with one brick masonry;
- from 1.0 to 1.9 - a building with an average level of thermal insulation (masonry of 2 bricks and several windows, standard roof);
- from 0.6 to 0.9 - building with thermal insulation High Quality... Double insulated brick building. Double glazed windows on the windows. The subfloor is of sufficient thickness. On the roof, for insulation, high quality material is used.
An example of calculating the power of a diesel heat gun:
- V = 150 m3;
- T = 29 ° С (outside temperature -10 ° С, required in the room + 19 ° С, the difference will be - + 29 ° С);
- K = 2 (building with one brick masonry);
We substitute the data into the formula: 150 * 29 * 2 = 8700 kcal / h, while 1kWh = 860 kcal / h. This means: 8700/860 = 10.116 kWh. Thus, we learned that to heat this building, a liquid fuel heat gun with a minimum power of 10 kWh is required. It is recommended to buy a unit with some power reserve.
Advantages of diesel heat generators
There are several positive aspects when using diesel heat guns:
- excellent performance;
- ease of maintenance;
- power can reach up to 230 kW;
- very low fuel consumption;
- autonomous work more than 10 hours;
- works well at low temperatures;
- the ability to quickly heat large rooms.
Based on the above positive aspects, it is safe to say that a heat gun is the most efficient device for heating residential and industrial premises.
Maintaining heat inside the garage in winter becomes especially important if you need to tinker with the car, so the heating system must be efficient and reliable. Diesel fuel heat guns do this job well. They are sold in shops where you can buy tools, car parts, and more of that kind. Diesel fuel heat guns are characterized by good performance, save the owner's money, and, if handled properly, do not pose any health hazard.
general characteristics
To understand the advantages of such equipment, you need to know what it is. Diesel heat gun works on simple principle, similar to that used in household fan heaters - air is heated with its subsequent injection into the jet. When he finds himself in a cold environment, hot streams give their energy to the masses of cold air. This cycle continues until there is a complete heating of the entire internal space to the optimum temperature.
Device
Diesel fuel heat guns are equipped with a reliable metal case designed to protect the heating element and blower from damage or penetration of objects that can ignite and cause a fire.
A safety element must be included in the design, which turns off the system in case of overheating. Therefore, heat guns on diesel fuel can be safely turned on to warm up the room in which you are doing something, and at the same time do not worry too much. However, no one canceled the observance of safety precautions.
Principle of operation
Diesel fuel heat guns, prices for which start at 3,500 rubles, consist of several basic elements: a fan that drives air through the heater, a heating element, and a housing in which everything is located. This description is quite general, but there is no need to understand the intricacies of the device of such equipment for those who use it. If a person's profession is the repair of heat guns, then that is another matter.
So, everything is clear with the device, and with the principle of operation, everything is not much more complicated here. Due to the combustion of fuel, the air is enriched with heat. It is driven by a fan through the heating zone. And how exactly the air is heated, and allows you to divide the guns into two categories.
Types of heat guns
Speaking about safety, many may wonder, but where do they go because diesel fuel burns out and forms certain substances that need to be removed. All of these compounds are quite dangerous to human health, so it is important to take care of their disposal. And then the time has come to tell that diesel fuel heat guns are of two types: direct and indirect heating. Each of these types has its own specific traits, features and possibilities for use.
Thermal indirect heating is good for a garage. This design assumes the presence of a branch pipe - it is designed to remove exhaust gases. A hose is attached to it, which can later be taken out into the street. This will not lead to any significant heat loss, however, harmful carbon monoxide as well as other substances posing a health hazard. That is why a diesel heat gun is perceived by many as a better option in comparison with gas models. Many gas-fired appliances do not have such a way to remove combustion products, so it will be necessary to open the garage for ventilation, which will cause significant losses of precious heat.
Direct fired heat gun
This option is not suitable for rooms where there are people, since the combustion products of diesel fuel are mixed with hot air and accumulate in the room. Therefore, the choice should be based on the most thorough study of the information about the device. If you need a heat gun, the instructions for which speaks about the impossibility of using it in a room where people are, then you should think about it before buying it.
Scope of application
Diesel fuel heat guns can be found in many places. They are usually used for heating, during installation. stretch ceilings to speed up the process of heating the film, as well as wherever there is a need for mobile devices that can quickly and not too expensively heat rooms of different sizes.
The most widespread heat guns, reviews of which from users are mostly only positive, received as heating devices storage facilities, building halls, as well as other places where heating is required, but the use of traditional equipment is difficult or impossible for some reason. In particular, such devices are becoming relevant for buildings in which there is no direct connection to electrical networks. The operation of a heat gun also requires a certain consumption of electrical energy, but it does not need much, so a small portable generator is quite capable of coping with this task.
Special types
Diesel fuel heat guns that use deserve special attention... This type of equipment heats the room without using a fan, while the air temperature does not rise due to its direct heating. Like all infrared heaters, such a gun heats planes and objects, and not air masses inside the room. The heating element here, as in all other cases, operates at the expense of combustion fuel, however, without the involvement of a fan. This makes such a device completely silent during operation, which adds certain advantages to it.
Operating rules
The basic requirements for the use of equipment differ depending on the type of instrument used. If we are talking about a cannon with direct heating, then high-quality ventilation of the heated area is required. Most often, heating units are used for local heating of rooms with good ventilation or a semi-closed type. Heaters that use non-heat transfer direct type, there are no such stringent requirements, since a chimney can be used to remove the combustion products.
Diesel fuel heat guns are increasingly used in the installation of tension coverings in rooms. The operation of such units requires minimal fuel consumption, which significantly reduces costs. In this case, the requirements for the organization of the operation of the device imply the organization of the exhaust gas removal, which, as mentioned above, is done very simply.
Advantages
The price of a heat gun can be from 3,500 rubles (depending on the power and manufacturer), and its upper limit is not limited. Such heaters are capable of operating not only with diesel fuel, but also with kerosene or waste oil. Thanks to small additions to the design, it is possible to use such fuel, as a result of which the efficiency of the equipment increases several times.
The main trump card of such devices is their mobility. They weigh very little, and their bulk is a fuel tank, the dimensions of which depend on the power of the device. Thanks to this, you can easily transport equipment and install in different places.
Pretty big the lineup allows you to choose the right option for solving any problems. The maximum efficiency of the heat gun is ensured even with its minimum size, while the maintenance costs are also difficult to call significant.
This becomes quite relevant at those moments when it is required to quickly and very strongly warm up the room in which renovation work... In particular, when installing stretch ceilings. With the help of a gun, the air is heated to the required temperature. Due to the highest mobility of such a heater, it can be brought into the room without any difficulties, and then removed from there. For this, there is no need to attract additional personnel, everything is done by the forces of craftsmen who carry out the direct installation of the coating.
Repairing heat guns is also not particularly difficult. These tasks require minimal set tools and basic knowledge in the field of oil-fired heating equipment.
Advantages
Safety is a significant factor when choosing a heating appliance. According to this parameter, gas cannons lag far behind diesel ones, and for the operation of electric ones, access to the power supply network is required. Therefore, it is the diesel option that can be considered optimal.
Reliability is important parameter, and it is he who tells what is better in favor of such equipment. The indirectly heated diesel heat gun is practically not susceptible to breakdowns, and its repair is much easier than in the case of using gas units.
All these factors speak in favor of the fact that this is a reliable, economical and convenient equipment. The only thing that can overshadow the use of such heaters is the requirement for a gas outlet pipe or ventilation.
Conclusion
It is already clear what qualities heat guns have. Reviews of such equipment speak of the maximum convenience and ease of use. Everyone who has had to use it testifies that it is modern way quickly and efficiently warm up any room. Such devices are in special demand among the repairmen of premises, since with their help it is made whole line operations. The price of a heat gun is quite affordable, so such a device pays off very quickly.
Humanity has invented many heating units that act as heat generators. These are numerous convectors, fan heaters, infrared heaters and much more. The most powerful of these are the efficient heat guns. They are designed for space heating big size and are characterized by high power. The most powerful unit is a diesel heat gun... Working on diesel fuel, it generates enough heat to heat quite large volumes.
In this review, we'll look at:
- Scope of application of diesel heat guns;
- Varieties of diesel-fueled heat guns;
- Their advantages and disadvantages.
At the very end, we will tell you about the most popular models on sale.
The principle of operation and scope of application of diesel heaters
A diesel heat gun is a fairly versatile unit. But not for heating living quarters. Such units are used to heat warehouses, hangars with equipment, facilities under construction, large garages and greenhouses. The principle of operation of heat guns is very simple - diesel fuel burns inside them, and the generated heat is pumped by a powerful fan into the heated space.
Despite the use of diesel fuel, this type of heat gun cannot be called autonomous. Electricity is still required to operate the burner and blow hot air.
An interesting feature of any diesel-fueled heat guns is that they are volatile - they need electricity to operate. Low-power models can operate from 12 volts (or 24), but the vast majority require a 220 volt connection. Electricity is needed here to operate the burner and forcing hot air into the heated rooms (to rotate the fan).
The burner in any diesel cannon works as follows - it sprays diesel fuel and at the same time provides air supply. The resulting fuel-air mixture is ignited, creating a steadily burning flame. The heat generated in a liquid fuel heat gun is sent to the room - a powerful fan is responsible for this.
Diesel heat guns are required:
- For heating warehouse premises - they generate a large number of hot air, allowing you to do without full heating;
- As a backup heat source for heating any objects in the event of frost, uncharacteristic for the area;
- For heating construction sites when there is still no heating here;
- For heating hangars where people work and equipment is stored;
- For installation of stretch ceilings - a powerful heat source is required here;
- For heating greenhouses where any crops are grown.
At the same time, a diesel heat gun is not suitable for heating living quarters. There are two reasons for this - too high productivity and the need to remove combustion products.
Varieties of diesel heaters
Diesel heat guns are presented in two large categories - they are direct and indirect heating devices. Let's see how the presented varieties differ among themselves.
Heat guns of direct heating
The direct fired diesel cannon is the most simple source thermal energy. It is equipped with a completely open combustion chamber. Its heart is a pump with a nozzle that generates a torch. There is a powerful fan behind it. The generated heat, together with the combustion products, is sent to the heated room. That is, there is no separate chimney here, which is a big disadvantage.
A direct heating heat gun is harmful to human health, therefore its operation in an unventilated room is prohibited (despite the almost complete combustion of diesel fuel). And where there is good ventilation, people will be constantly haunted by the smell of burning - there is no getting away from it. Such units are most often used in open areas where there is an inflow of fresh air.
There are craftsmen who manage to convert direct-type cannons into indirect-type units, which will be discussed later - they are safer.
Indirect heat guns
Being near a direct-fired diesel heat gun is like sniffing smoke from a truck's tailpipe. Prolonged exposure to a heated room can lead to severe headaches and poisoning. Therefore, such units are used relatively rarely. But they came up with an excellent alternative.
Diesel heat gun of indirect heating is a more perfect and advanced device. In some ways, it resembles a liquid fuel heating boiler. Only it heats not the coolant, but the air. The basis of such a heat gun is the same nozzle - it is placed in a closed combustion chamber equipped with a combustion products removal system (in other words, a chimney). The rest of the design is the same.
Due to the removal of combustion products outside, such units can be used to heat unventilated rooms. The injected air in these guns does not come into contact with the burning torch - it kind of blows the combustion chamber. As for burning and soot, they are sent to the connected chimney and do not enter the premises. Thanks to this, indirectly heated diesel heat guns can be used in almost any conditions.
Despite the presence of the removal of combustion products outside, for the operation of units of indirect (indirect) heating, at least some kind of ventilation is still needed - oxygen for the operation of the burner is taken directly from the room.
Advantages and disadvantages
Let's see what are the advantages and disadvantages of diesel heat guns. They have a lot of advantages:
- Ease of maintenance - there is no complex diesel engine used in automotive engineering. The heart of these units is a simple diesel heater in the form of a nozzle with a pump;
- A heat gun can have a high power - there are samples with a power of 10, 20 or 30 kW on sale, as well as monstrous units with a power of up to 150-200 kW;
- The ability to warm up large rooms in the shortest possible time - thanks to the use of efficient fans, diesel heat guns are characterized by high performance;
- Economical - in comparison with electric units, even long-term operation of a diesel heat gun will not lead to huge costs.
There are also disadvantages:
- Diesel heat guns of direct heating are unsafe for humans - they release toxic components into the air resulting from the combustion of diesel fuel;
- Volatility - these units cannot operate without a power source;
- High cost - diesel heat guns are industrial devices, which affects their price;
- Smell of diesel fuel - the smell of diesel fuel may spread indoors during prolonged use.
The disadvantages are not the most serious, so they can be neglected (except for the first point)
Popular models
If you want to buy a diesel heat gun, then the information on the most popular and demanded models will come in handy. Let's consider them in more detail and tell you about their technical characteristics.
Before us is a rather powerful diesel heat gun of indirect heating from a domestic manufacturer. Its power is 30 kW, the performance indicator is 500 cubic meters per hour. It can be used in rooms for any purpose. The fuel burns out almost completely in it, and there is a thermostat on board to maintain the set temperature. One of the important functions is protection when extinguishing - if the flame suddenly disappears, the unit will immediately shut down.
The design of the Resant TDPN 30000 heat gun provides for a built-in tank for diesel fuel, its volume is 50 liters. This reserve is enough for 15 hours of continuous work. For the convenience of moving the device, it is equipped with wheels and a carrying handle. The weight of the heat gun is 48 kg.
Heat gun, diesel QUATTRO ELEMENTI QE-22D 243-905
Under such a tricky name is an impressive 22 kW heat gun. With a fuel consumption of 2.1 kg / h, it has a capacity of 585 cubic meters. m / hour. The heater weighs only 16 kg and has a built-in tank that can hold 19 liters of diesel fuel. The heat gun belongs to the direct heating models, so all combustion products go straight into the heated rooms - use it only where there is good ventilation.
The main advantage of this heat gun is the increased strength of the combustion chamber. Diesel fuel burning in it does not harm it, which increases its service life. The heat gun is controlled by digital electronics built on the basis of a microprocessor. The heater is equipped with a digital indicator to control the temperature.
This heat gun is characterized by increased endurance - it uses units that are characterized by high strength and reliability.
Before us is one of the most powerful heat guns. Its power is 70 kW with diesel fuel consumption in the amount of 5.7 kg / h. Such an impressive unit was equipped with a capacious tank that can hold 80 liters of fuel. Due to the use of an indirect heating system, the presented model can be operated indoors - combustion products are removed through a connected chimney.
Despite the high power, the heat gun turned out to be quite compact. It easily moves from place to place, for which there are castors and two handles. The chimney is connected from above. To control the air temperature, a small LED indicator is implemented on board. Next to it is the temperature control knob. The maximum heated area for this heat gun is 400 sq. m.
Missing products from such a well-known brand would be simply impossible and inadmissible. The Ballu BHDN-20 heat gun has a power of 20 kW and can be used to heat rooms up to 200 square meters. m. The productivity of the apparatus is 500 cubic meters. m / hour. Diesel fuel is poured into a 24 liter tank. At the same time, the fuel consumption of this heat gun is only 1.6 kg / hour.
The heat gun is built according to the indirect heating scheme and is equipped with a powerful ignition system that provides instant ignition of the burner. To ensure a long service life, the combustion chamber is made of heat-resistant stainless steel. In addition, the heat gun is equipped with a high-performance fan, wear-resistant casing, two wheels and a carrying handle.
Video