Overview of diesel heat guns for heating garages

Features of using guns

Today, it is electric fan heaters of various types and devices that are considered the most popular for quickly heating a garage, although the condition of the wiring leaves much to be desired. Therefore, fire inspectors like to visit such public places of use to draw up acts on various violations.

It is no secret that the indirect cause of all fires in garages is the improper use of various types of heaters from homemade to factory-made models. As a rule, the fault here is 100% of the users: before connecting an electric gun of any power, you need to consult with the specialists of the power grid. In addition, certain rules for the operation of products of any kind must be observed.

1. After purchasing the equipment, it is necessary to let it settle in the heat for at least 2 hours.
2. If this is a diesel version or a gas heat gun purchased specifically for a garage insulated in advance, it is better to start them outdoors for the first time so that the factory grease burns.
3. Before turning on the electric version, it is necessary to check for the presence of condensate on the heating elements, and also inspect the grounding of the garage wiring.
4. A used oil gun is checked for foreign objects in the fuel tank before fuel is filled.
5. When using a chimney, it must have good draft and a minimum of bends.
6. When connecting the gas gun, check all connections for leaks, otherwise the first inclusion may be the last.

As for the cost: diesel devices are considered the most expensive: their price is from $ 200, gas ones are in the middle position within $ 150, and electric options are from $ 50. Having made the right choice, you will forget about frozen hands and an engine that does not start from the cold for at least six months - it will be comfortable to work in the garage, even though there are severe frosts outside the gates.

The principle of operation and scope of diesel heaters

A diesel fuel heat gun is a fairly versatile unit.But not only for heating residential premises. Such units are used for heating warehouses, hangars with machinery, facilities under construction, large garages and greenhouses. The principle of operation of heat guns is very simple - diesel fuel burns inside them, and the resulting 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 on 12 volts (or 24), but the vast majority require connection to a 220 volt network. Electricity here is necessary for the operation of the burner and forcing hot air into the heated rooms (for fan rotation).

The burner in any diesel gun works as follows - it sprays diesel fuel and at the same time provides air supply. The resulting fuel-air mixture ignites, creating a steadily burning flame. The heat generated in the liquid fuel heat gun is sent to the room - a powerful fan is responsible for this.

Heat guns on diesel fuel are necessary:

• For heating warehouse premises - they generate a large amount of hot air, allowing you to do without full-fledged heating;
• As a backup source of heat for heating any objects in the event of frosts that are uncharacteristic for the area;
• For heating construction sites when there is still no heating here;
• For heating hangars in which people work and equipment is stored;
• For the installation of stretch ceilings - a powerful source of heat is required here;
• For heating greenhouses where any crops are grown.

At the same time, a thermal diesel gun is not suitable for heating residential premises. There are two reasons for this - too high productivity and the need to remove combustion products.

Which heat gun is better: gas or diesel

Today, manufacturers produce thermal devices that can run on diesel fuel, gas, electricity. The most economical are diesel and gas heaters. Due to the wide distribution of fuel, a gasoline heat gun is especially popular. The choice of thermal installation depends on the size of the room for which the device is selected, and the quality of the ventilation system in the building.

So, diesel guns are most often chosen for heating large industrial premises: they work quite noisily, and at the time of launch they emit an unpleasant odor.

If you want to use a diesel device for mounting vinyl ceilings or drying a concrete screed, then ventilation must be well organized in the repair room, and the gun must have a special chimney. However, diesel-fueled heaters are characterized by high power and durability. And in case of breakdowns, it is much easier to repair diesel equipment than gas equipment.

Gas heat guns are convenient devices that can be easily moved. They are quieter than diesel and equipped with a gas cylinder that solves the problem of refueling the device. In addition, the main advantage of gas guns, in comparison with diesel ones, is that they do not generate an unpleasant odor during operation.However, the gas gun “burns out” oxygen, so it is not recommended to use it in closed, small rooms.

Gas gun in the garage: features of choice

A household heat gun in a garage is a gift for many motorists, because, often, there is no way to organize heating in buildings of this type. And working in a garage in the winter can be extremely uncomfortable. Gas guns are especially popular with garage owners: they are affordable, operate quietly and do not emit carcinogens.

When choosing a gas gun in the garage, you should determine the optimal power of the device based on 1 kW of thermal power per 10 square meters of room area with ceilings no higher than 3 m.

So, the best option for an average garage of 25 square meters would be a thermal installation with a capacity of 3-5 kW. An insufficiently powerful gun will not cope with its task, and an excess of power will affect the amount of fuel and electricity needed to operate the device.

Firstly, it will be easier to calculate the required power of the gun. Secondly, you do not have to overpay for heating the “street”. Insulation of the building will also be useful if you decide to store the heater directly in the garage: +5 degrees is considered the optimal temperature for storing equipment.

Other characteristics

We have analyzed the main parameters: the rest do not seem so important. But if you want to approach the choice with all responsibility, then study them.

Air flow

Shows how much air mass the device creates per hour. This characterizes the heating rate and depends on the fan.

You should look at throughput in conjunction with power. If the flow rate is high and the heating capacity is low, the outlet stream will be barely warm. There is no point in such equipment.

There is no such parameter for infrared models.

Dimensions

Compact samples have little performance. Be prepared to put up with bulkiness if you need a high-powered unit. In general, the weight ranges from 1 to 1500 kg.

Electric guns weigh 3-70 kg, and gas ones from 3 to 700 kg. The spread in the mass of liquid-fuel specimens is huge: from a modest 1 kg to 1.5 tons.

Shape and material

The body may be in the form of a tube or a rectangle. The first resembles a real military weapon with its elongated cylindrical shape. It is capable of delivering higher temperatures than its competitor. At the same time, rectangular units provide more even heat distribution due to the increased dissipation area.

All structures are made of metal. This is due to the danger of plastic melting. In household models, there are plastic inserts, for example, knobs, switches. As a rule, they are hidden in such a way as to prevent their excessive heating.

Functions

Heat guns do not differ in a variety of functions. These are already quite expensive products and it makes no sense to complicate them with additional gadgets.

Increased attention is paid to security. The devices are equipped with a rollover shutdown option.

Liquid fuel and gas facilities are equipped with flame control: if it goes out, the fuel supply stops.

The thermostat helps to control the heating level. As soon as the room temperature reaches the set value, the element stops working.Also, a shutdown occurs if the internal parts reach critical values. If you plan to leave the device unattended, then definitely buy a device with a thermostat.

Ventilation without heating allows you to mix the air in the room. And in hot weather, the device will replace your fan.

Features of the repair of diesel guns for space heating

Repair maintenance of a diesel-fueled plant can result in a significant amount of money. Only one diagnostic procedure costs about 1000 rubles. For this reason, many owners of garages and storage facilities resort to self-repair of structures.

How to repair a diesel heat gun yourself

If warm air does not move, the fan motor may be defective. Repair involves stripping the terminals, checking the winding on the motor (an analog tester is suitable for this), as well as insulation. Sometimes the damage is so serious that a superficial adjustment is not enough. In such cases, one thing remains - replacing the engine.

An important part of the design are nozzles. The quality of the work of these elements depends on the full functioning of the entire heating system. These parts rarely break, and you can buy new elements to replace failed ones at any store.

These parts rarely break, and you can buy new elements to replace failed ones at any store.

Modern heat guns are equipped with a convenient control panel that allows you to adjust the air heating temperature.

Much more often, the need to repair a diesel gun arises due to filter clogging.To eliminate this breakdown, it is enough to open the body of the structure, unscrew the plug and remove the contaminated element. After washing with pure kerosene, the filter is ready for further operation. Before installing this part in place, it is advisable to blow it out with a jet of compressed air.

Rules for the safe operation of diesel appliances

When operating diesel appliances, it is very important to adhere to basic safety requirements. A container filled with fuel must not be placed closer than 8 m from sources of open fire and any heating devices. Important! Do not use gasoline instead of diesel

Volatile components of this substance increase several times the likelihood of an explosion.

Important! Gasoline instead of diesel is not allowed. Volatile components of this substance increase several times the probability of an explosion. A room with a working cannon must be left at the first appearance of these symptoms:

A room with a working cannon must be left at the first appearance of these symptoms:

• severe dry mouth;
• pain and discomfort in the nose and throat, as well as the eye area;
• headache that appeared suddenly;
• nausea.

Professional model of a heat generator on diesel fuel from the Master company

The presence of carbon monoxide in a closed room negatively affects the condition of people suffering from diseases of the cardiovascular system, lungs. The presence of pregnant women and patients with anemia in the room where the gun is working is not allowed.

Due to their efficiency, diesel guns are so in demand on the market.By following the basic rules of operation, you can avoid health problems. Otherwise, the use of a diesel gun is not dangerous. A high-quality device with suitable technical characteristics can provide a garage or warehouse with efficient heating for many years. The design of these devices is so simple that most of the breakdowns that occur during operation can be eliminated by the owner without the intervention of specialists.

How to choose a heat gun: recommendations

When choosing a heater, one should take into account not only the power of the gun and the dimensions of the room, but also the quality of ventilation in the room. There are many nuances that affect the comfort and safety of using a thermal device, its durability and efficiency.

So, when choosing a thermal installation, it is necessary:

Decide what purpose you need the device for. To heat living rooms, you can buy a gas or electric gun. But, it should be borne in mind that the second requires a permanent connection to the electricity network with a voltage of 220-380 V.
Make sure there are autonomous safety systems in the design

So, the heating gun, at least, must have sensors that will autonomously interrupt the operation of the device in the event of a fire hazard (for example, overheating).
Pay attention to the presence of additional functions, components. So, an electric heat gun should be equipped with a special protective mesh; household appliances - have a thermostat that allows you to set the desired temperature, and portable devices come with wheels.
Pay attention to the noise level that the device emits during operation.

The optimum noise level is considered to be within 40 dB.

If you choose a heat gun in a store, it will not be out of place to ask the staff to test drive the model in order to check its performance.

Features of direct heating diesel heat guns

Direct heating guns are the simplest devices that can serve as heat sources. Such designs have an open combustion chamber. A pump equipped with a nozzle is installed inside, due to which a torch effect is provided. Behind these elements is a fan. All the heat that is generated in the process of fuel processing is supplied to the room along with the products of its combustion.

The principle of operation of a diesel gun of direct heating

The principle of operation of the direct heating diesel gun:

1. Diesel fuel from the tank is fed into the heating filter.
2. The compressor transports fuel to the injector.
3. The diesel fuel is ignited by the glow plug.
4. A fan mounted behind the burner draws cold air from the room into the combustion chamber where it is heated.
5. The protective grid located in the front of the device delays the flame, preventing it from penetrating outside the combustion chamber housing.
6. After heating, the air is fed back into the room.

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The principle of operation of a direct heating gun is quite simple. It is efficient and understandable. However, such guns have one significant drawback. All combustion products enter the room, so it is not recommended to use devices in living rooms. Direct heated guns are suitable for open areas and spaces with a good ventilation system.

Average prices of diesel guns for space heating (direct heating designs):

Heat guns can be used for year-round heating of greenhouses

The principle of operation of a diesel heat gun (direct-flow)

From the fuel tank of a diesel direct-flow gun, fuel (usually diesel fuel or kerosene) enters a special filter-sump. Further, with the help of a pump or compressor, the fuel enters the nozzle.

A fan located at the rear of the gun delivers cold air to the combustion chamber, while at the same time distributing fuel from the nozzle to the same place. Ignition occurs by means of a spark plug and an electrical element. Hot air masses, together with combustion products, rush into the heated space.

Some features of diesel heat guns

• Economical fuel consumption (10-15 hours of continuous operation)
• Low energy costs (0.3-1 kW)
• In the case of direct heating, combustion products enter the heated space, so ventilation of the room is necessary.

How to choose a diesel heat gun

The choice of a diesel heater is based on its operating conditions. In other words, it can be a large construction site or a food warehouse, a garage or a dwelling, where it is required to provide not only high-quality heating, but also the purity of the surrounding air. For this reason, the following criteria are taken into account in the selection.

Heating method

• Direct heated options. They are characterized by high efficiency, almost reaching 100%. The power is 10-220 kW, and the outlet air temperature is up to 400 degrees.A distinctive feature is the absence of a chimney, and as a result, combustion products spread into the surrounding space. They are used only for heating non-residential objects, they require a high-quality ventilation system.
• Devices with indirect (indirect) heating. The efficiency of such models is about 60%, and the maximum power reaches 85 kW. The reason for this is the closed combustion chamber. In addition, the design is equipped with a chimney, which allows you to remove the combustion products of the fuel outside the heated room. There are multi-module models capable of delivering up to 220 kW of thermal power.

Heating power

The more powerful the device, the larger the area it can heat up to a given temperature. That is, it all depends on the room, as well as on the difference between the air temperature at the moment and its planned indicator. Heat transfer plays an important role. For example, to heat a room of 300 square meters in a new building, a device with a capacity of 10 kW is required, and for an old room of the same area, at least 20 kW. For a glass greenhouse of 300 sq.m. with a single-layer foil, you will have to buy equipment with a capacity of at least 80 kW. All these data are valid if the temperature difference is not more than 30 degrees, and the calculations are carried out according to a formula specially created for this purpose.

Thermal insulation quality

The body of the device must have high-quality thermal insulation to prevent its excessive heating, excluding deformation and breakage. It is also an important point in fire safety. For this reason, the case should not heat up above 40 degrees.

Mobility

As the weight of the heat gun increases, the inconvenience of its movement around the object increases. Therefore, light models should be equipped with a carrying handle, and heavier models should be equipped with a wheelbase for transportation.

Attention is drawn to the strength of the frame and the quality of the pallet

Heating temperature control

The presence of this function will allow you to independently program the device to heat the room to a predetermined temperature, or rather, its rheostat. For these purposes, a corresponding button or knob is installed on the control unit.

Battery support

The heated air is blown out by a fan powered by electricity. In most cases, we are talking about a 220 V household network, but some models support battery power. The latter option is autonomous, as it allows the device to be operated in the field. Low power consumption, which rarely exceeds 500 Wh, ensures continuous operation for several hours.

This nuance is specified by the manufacturer, seller, or indicated in the passport for a diesel gun. The use of unsuitable fuel will lead to a quick breakdown of the unit. Most models require automotive "winter" diesel fuel that complies with GOST 305-82, or aviation (clarified) kerosene.

Additional systems

Manufacturers equip heat guns with various protective and control systems; when buying, be sure to make sure that the following are available:

• automatic control of the heating level;
• automatic shutdown in case of insufficient fuel;
• overheat protection.

There are manufacturers on the market that offer the installation of these options for a fee, or sell them as individual devices, which should be considered when choosing a diesel gun.

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What is the best heating gun?

When choosing a heat gun for heating a certain room, as well as when purchasing any other equipment, you should always correlate your needs with the available opportunities. First of all, it is necessary to decide what exactly this device is for - for permanent or temporary use, for regular heating of a room or using the device only for periods.

The design of the heat gun

In addition to these factors, you will need to consider:

• the size of the room in which the air will need to be heated;
• the availability of a particular source of energy;
• the presence of ventilation in the room and the possibility of removing combustion products from it;
• permanent or temporary presence of people.

To make it easier to understand the most suitable type of device, it is worth taking a closer look at each of the 3 types of guns, evaluating the pros and cons of electric, diesel and gas equipment.

The device and principle of operation of a diesel heat gun

The heat gun is a universal device for space heating. The principle of operation of such structures is quite simple: diesel burns inside the heater, as a result of which heat is generated, which is supplied to the room by a powerful fan.

Diesel fuel is used as fuel. Some models are able to run on used and filtered oil or kerosene.Due to the progressive internal design, these designs have high power and efficiency, which reaches almost 100%. All diesel heat guns are dependent on electricity. Some low-power models can operate on 12V or 24V, but most models require 220V to function properly.

Electricity is used to start the burner. In addition, it is necessary for the transport of heat due to the rotational movements of the fan. The burner not only atomizes the fuel, but also contributes to the air supply. As a result of this process, a mixture is formed that is highly flammable. Thanks to this, the flame is stable.

The principle of operation of an indirect heat gun is that the air blown by the fan passes through the combustion chamber and enters the room already heated, and the spent diesel fuel products are removed from the room through the chimney.

The affordable price of diesel guns and the possibility of efficient heating of rooms devoid of a central heating system have made these designs so popular. This type of equipment is capable of generating a large amount of heat, due to which the scope of its application has expanded.

Note! Solar powered guns cannot be used to heat residential areas.

Scope of diesel structures:

• heating of warehouse type premises;
• backup heating at poorly insulated facilities in cases where frosts uncharacteristic for the area occur;
• heating of construction sites where heating has not yet been installed;
• organization of heating in hangars used for storage of equipment;
• installation of stretch ceilings;
• heating of greenhouse structures used for growing crops.

In addition, you can buy an indirect heating diesel gun to organize heating in the garage.

Scheme of the device of a thermal diesel gun of indirect heating.