Diesel heat guns and their varieties

No. 4. Diesel heat guns

Diesel guns, as the name implies, use diesel as fuel. The design of these devices may vary. Distinguish:

• diesel guns of direct heating. They warm up the room faster, as the forced air passes through the combustion chamber. This implies a minus - along with the heat, combustion products also enter the room. If people are constantly in the room, then such heating is clearly not suitable. This is a good option for outdoor heating, for example, when you need to warm up the car, carry out some construction work on the street, etc.;
• diesel guns of indirect heating.In this case, the fuel, when burned, heats the walls of the chamber, and already they heat the air, which is drawn in by the fan. Combustion products are removed from the chamber through the chimney. This design is safer, but its efficiency is lower.

Otherwise, all diesel guns are arranged in the same way. There is a fan, a combustion chamber and a fuel tank. The latter serves as a container for fuel, from there it is pumped into the combustion chamber. The fuel-air mixture is ignited in the burner by piezo ignition.

Advantages:

• low cost of operation;
• the ability to heat large areas;
• devices with a flame control system and a timer can be left unattended.

Minuses:

the need to monitor the fuel level and constantly add it;
the need to provide a chimney or use the device only in open space;
over time, the metal in the area near the burner may burn out, so pay attention to the thickness of the metal when buying.

Of course, diesel guns are not suitable for residential and public buildings. These are, as a rule, large installations that are used to heat warehouses, hangars, industrial premises, and open construction sites.

Basic device and principle of operation

The heat gun is a mobile air heater for rooms for various purposes. The unit is mainly used for two purposes. The first task is the organization of local heating of exhibition halls, trading floors, warehouses, garages and pavilions.

The second purpose is the quick drying of individual elements in technological operations, for example, fixing French ceilings or interior decoration in winter.

The fan heater has a simple device.The main structural details of the device: a fan, a heating element, a thermostat for offline operation and a thermostat to prevent overheating of the gun

All components are housed in a rugged metal housing equipped with grilles for cold air intake and hot air exhaust. A heating element, an open coil or a fuel tank with a heat exchanger is used as a heat generating unit.

The principle of operation of the fan heater:

1. The "gun" captures the air currents and passes them through the heater.
2. Hot masses are pushed out through a nozzle, being distributed on the room.

The operation of the mechanism is similar to a conventional fan. The only difference is the parallel connection of heating elements that supply warm air.

Other selection options

Although a diesel heat gun is not the most aesthetic heating device, it must be safe - this is no option.

Therefore, it is worth paying attention to the thermal insulation of the outer casing. To prevent an accidental touch from resulting in a severe burn, the case should not heat up above 50-60 ° C

The combustion temperature of diesel fuel reaches hundreds of degrees, so thermal insulation is very important.

Diesel heat gun with exhaust outlet requires the installation of a full chimney

Performance characteristics

In addition to thermal power, there are a number of other characteristics that determine the efficiency of equipment:

• Supply voltage and electrical power consumption. There is a fan in the design and it needs power supply.
• Maximum air exchange (cubic meters per hour). Shows how much air is "driven" through the unit. Determined by the power of the fan and burner.
• Fuel tank volume and fuel consumption.These two parameters should be considered together. By dividing the volume of the tank by the consumption, you will find out how many hours the unit will work on one gas station.
• The presence of air and fuel filters, the regularity of their maintenance. These filters are installed, perhaps, in any more or less normal model. But the filters are different and require different cleaning or replacement intervals. Before buying, do not be too lazy to study the instruction manual. Some filters need to be cleaned after 150 hours of operation, others after 500. So there is a difference.

• Noise level. An important parameter if it will be used for a long time in a room where people work.

The fuel consumption of diesel guns is solid. To reduce, you can put a thermostat. This will save you about 25%. If the flow rate is still too high, it can be reduced by adjusting the fuel supply. If you make the flow less, the warm-up rate may decrease slightly, but not catastrophically. But fuel consumption will be reduced. With the help of tests, you can choose the optimal mode of operation.

Security

Some safety features are found in almost all diesel heat guns, others are added only to some models. With an increase in the degree of protection, the cost also increases, but saving on security is more expensive for yourself.

• Flame control system. It can be implemented in different ways, but the result of the work is the same: in the absence of a flame, the fuel supply is cut off.
• Shutting off the fuel supply in the event of a power failure. The device turns on automatically after the appearance of electricity or not - depends on the model. It needs to be clarified.
• Overheating control. The temperature in the combustion chamber is controlled.If it exceeds the permissible level (set at the factory), the fuel supply is cut off.

Every normal diesel heat gun has these protective features. This is the base that provides the minimum level of security. In more "fancy" options, an oxygen level sensor, carbon monoxide level control can be built in. If there are no atmospheric analyzers in the selected model, they can be installed separately.

Technical characteristics of some models of Ballu diesel heat guns of the BHDP line

Ease of use

Agree, it is better if the heating unit delivers a minimum of inconvenience, requires a minimum of attention

The most important thing is the type of management. The most convenient and modern - electronic control

It has great capabilities both in terms of security and service functions. But models with this type of control are the most expensive. Another thermal diesel gun may have:

• thermostat or thermostat. The device built into the housing allows you to set the desired air temperature. This allows you to pay less attention to the control of work. When the selected temperature is reached, the unit switches off. When the air cools down by one degree, the heating turns on again. The thermostat can be mechanical or electronic.

• Fuel level control in the tank. It helps not to be left without heat, and to control the amount of fuel poured during refueling.
• Wheels for moving.
• Adjustable tilt angle.

Not all features are expensive. For example, wheels and tilt adjuster. They are implemented more than simply, however, their presence facilitates the use of diesel heat guns.

General principle of operation

At its core, a heat gun is a heat generator for space heating. In it, the air flow 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 principle of operation 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;
• fuel ignites in the chamber;
• the fan pumps air through the cylinder;
• at the exit we get a jet of very heated air.

There are 2 types of diesel fuel heat gun:

1. Heat generator of direct heating.
2. Heat generator of indirect heating.

Device

The device of an electric heat gun. (Click to enlarge) An electric heat gun is a fairly functional air heater, which contributes to the efficient organization of heating rooms for various purposes.

In order to understand how an electric heat gun works, first of all, you need to know the scheme of its device.

This type of thermal units consists of the following structural elements:

1. Frame. As a rule, this element has the following types of forms:
   • cylindrical (the most common form);
   • rectangular (more applicable for domestic purposes).

   The outer casing can be made of the following materials:

   • strong metals;
   • fire-resistant plastic;
   • ceramics.
2. The heating element of the heat gun can have the following two representations:
   • a spiral made of refractory metals;
   • a system of hermetically sealed pipes that are filled with quartz sand (another name is heating elements).

   It is also worth noting that depending on the model of the electric heat gun, the number of heating elements may vary.

3. A blower fan with a powerful electric motor is usually located behind the body of the heat gun.
4. A thermostat that reliably protects the heating element from overheating.
5. A thermostat that turns on this unit if the room temperature drops below the set one.
6. The protective grill, which is located in front of the heat gun, reliably prevents touching the heating element.

TOP 5 popular direct heating diesel guns

When choosing, it is imperative to look at all the operational and technical parameters of the models offered on the market. The quality of manufacturing materials depends on the manufacturer and class of the gun. Therefore, the prices differ, although in most cases the difference is not so significant. Consider the TOP-5 of the most popular direct heating heat generators that reproduce heat using liquid fuel - diesel or diesel fuel.

Quattro Elementi QE 25d, diesel

1. Type of application - portable design.
2. Transport accessories - multifunctional platform, plastic handle at the top of the case.
3. Body and chamber material – steel.
4. The combustion safety system is an electronic control photocell.
5. Power - 25 kW.
6. Motor power - 0.15 kW.
7. Fuel tank capacity - 20 liters.
8. Productivity - 400 cubic meters / h.
9. The level of consumption of combustible material is 2.2 kg / h.
10. Outlet temperature - increase up to 250˚С.
11. Product weight - 12.8 kg.
12. Warranty - 2 years.
13. Price - 16,000 rubles.
14. Manufacturer - Italy.

Mustang BGO-20, diesel

1. Type of application - transportable structure.
2. Transportation - Multi-functional platform with two front wheels, cast-in trolley handle that merges into a rear floor stand.
3. Body and chamber material – steel.
4. Security system - shutdown systems in case of excessive heating, protection in case of a sudden power outage.
5. Power - 20 kW.
6. Fuel tank capacity - 18 liters.
7. Productivity - 595 cubic meters / h.
8. The level of consumption of combustible material is 1.95 kg / h.
9. Heat transfer - 17208 Kcal / h.
10. Dimensions - 805x360x460 mm.
11. Product weight - 23.60 kg.
12. Warranty - 1 year.
13. Rates - 13,160 rubles.
14. Production - USA, China.

Remigton REM-22cel, diesel and kerosene

1. Type of application - floor, mobile.
2. Devices for transportation - a trolley on two wheels and a support-handle.
3. Casing and chamber material - steel.
4. Combustion safety system - control photocell for the flame, electronic.
5. Power - 29 kW.
6. Engine power - 0.19 kW.
7. Fuel tank capacity - 43.5 liters.
8. Productivity - 800 cubic meters / h.
9. The level of consumption of combustible material is 2.45 kg / h.
10. Outlet temperature - increase up to 250˚С.
11. Dimensions - 1010x470x490 mm.
12. Product weight - 25 kg.
13. Warranty - 2 years.
14. Cost - 22,000 rubles.
15. Manufacturer - USA, Italy.

Kerona KFA 70t dgp, diesel, diesel

1. Type of application - portable design.
2. Devices for transportation - a multifunctional platform-tank, a plastic handle at the top of the case.
3. Body and chamber material – steel.
4. Protection system - fireproof protective grille on the combustion chamber and a rod on the body, electronic ignition system, built-in thermostat.
5. Power - 16.5 kW.
6. How long does it work continuously on one tank filling - 11 hours.
7. Fuel tank capacity - 19 liters.
8. Productivity - 375 cubic meters / h.
9. The level of consumption of combustible material is 1.8 kg / h.
10. Outlet temperature - increase up to 250˚С.
11. Dimensions - 390x300x760 mm.
12. The weight of the structure is 12 kg.
13. Warranty - 1 year.
14. The average cost is 20,300 rubles.
15. Country of manufacture - South Korea.

Profteplo DK 21N, on diesel, diesel fuel, kerosene

1. Type of application - mobile, transportable, there is a control display (LCD).
2. Transportation accessories - multifunctional platform, 2 wheels in front, rear handle stand.
3. Casing and chamber material - steel.
4. Combustion safety system - flame control.
5. Power - 21 kW (not regulated).
6. Motor power - 0.15 kW.
7. Fuel tank capacity - 41 l.
8. Productivity - 1000 cubic meters / h.
9. The level of consumption of combustible material is 1.63 kg / h.
10. Outlet temperature - increase up to 250˚С.
11. Dimensions - 1080x510x685 mm.
12. Product weight - 43.4 kg.
13. Warranty - 2 years.
14. Cost level - 36,750 rubles.
15. Country of origin - Russia.

After the use of direct heating diesel heat guns, the company will immediately experience savings in electricity costs, because the equipment is low-power. The installations work as follows - they give heat through such a device inside the structure as a heat exchanger. It has a through action, without a separately mounted branch pipe for the removal of combustion products. Such devices are considered the cheapest on the market of thermal equipment, their service life is measured in tens of years, and technical characteristics satisfy almost all consumer needs.

Kinds

The entire range of heat guns is usually divided into classes depending on what type of energy carriers are used to obtain a warm air flow.

Among them, the following important varieties can be distinguished.

At the same time, an important fact should be taken into account: depending on the power, electric heat guns can be connected to two-phase and three-phase electricity systems. Therefore, when choosing a device of this type, it is necessary to take into account the electrical wiring that the room is equipped with.

To obtain the heat flow, natural gas is used, which is completely burned out in the heat gun. It is recommended that this type of units be used only in non-residential premises.

The name of this type of device indicates that diesel fuel is used to produce heat.

As a rule, this type of unit is used for industrial purposes.

Water heater. A distinctive feature of this type of units is that the heating element is made in the form of a heat exchanger through which hot water flows.

The design of this device does not provide for the presence of a fan.

Air heating occurs on the basis of infrared radiation.

It is also worth knowing that a heat gun of this type can heat only a certain area of ​​\u200b\u200bthe room.

Explosion-proof heat gun. This type of unit is usually used for space heating with an increased concentration of combustible mixtures, in other words, these can be transport hangars, as well as warehouses for fuels and lubricants.

Heat guns on diesel fuel

The design of diesel units is quite simple. These devices consist of:

• fan
• burners;
• combustion chambers;
• fuel tank.

Heat gun on diesel fuel

These are the main parts of the device, many models are equipped with wheels for moving the device. The supply of fuel occurs with the help of a compressor or pump. The heat flow is created during the operation of the electric fan. They can work autonomously, for which the devices have a thermostat, a timer, a flame control system. There are different capacities. No permission is required to install them.

In devices with a direct type of heating, all combustion products are immediately discharged into the surrounding air. Because of this, they are not suitable for heating rooms where people live. Units with indirect heating are less powerful, but much safer to operate. They have a special tube with which the products of combustion are removed from the room by attaching to the chimney. Such devices can already sometimes be used in rooms where there are people, if there is ventilation or regular ventilation. But due to the high noise level during operation of the device, its use in residential, commercial or office areas is not very frequent.

Heat gun on diesel fuel of direct heating

The main purpose of diesel-powered units is to heat such premises as:

• production shops;
• industrial areas;
• building objects;
• warehouses;
• open areas;
• agricultural premises.

In addition, diesel guns are often used to dry and thaw various materials, as well as to speed up the drying process of treated surfaces in rooms during renovation work.

How to choose a gas gun in the store and what to focus on

When choosing a gas gun for domestic use, you should first of all pay attention to the following parameters:

1. Power. It is measured in kW, sometimes manufacturers additionally indicate the volume of heated air for 1 hour of operation. In the first case, the formula is followed: 1 kW per 10 m2 is a minimum. Secondly, it is necessary to calculate the total volume of the room planned for heating with a gun and divide the resulting figure by 2. This will give the minimum power of the gun, with which the room can be heated in 30 minutes of continuous operation of the heater. For example, the heated volume of air with a gun is 300 m3. Accordingly, it is optimally suited for a room with a volume of 150 m3 (volume and area should not be confused - these are completely different indicators).
2. Connection type. Meaning, with a closed or open burner. The first ones are more expensive and they are used for "emergency" heating of residential premises. For other purposes, you should not buy them. Open - the best option for garages, sheds, warehouses and other non-residential premises.
3. The presence of auto arson. Basically, the function is optional. Moreover, piezo elements quickly fail, but at the same time their presence increases the cost of the gun by almost 10 - 20%.
4. Availability of additional features. This means adjusting the fan speed, a system of sensors, temperature controllers, and so on. All of them help to automate the operation of the gun, but at the same time, manufacturers do not recommend leaving heaters of this type operating without supervision. And the presence of those same sensors also increases the cost of the final cost of the device. If you need to save money, you can buy a gun without all these sensors.
5. Fan power.It is found either from 220V or from 12V DC. The latter option is convenient in that the gun can be used as a mobile one by launching it even in the absence of a household power supply. If such functionality is not needed, then it is better to take it with the simplest 220V engine. Even better - without brushes (such motors are very reliable and durable, but they are quite expensive).

The principle of operation of a gas gun

Table 1. Key parameters of gas guns to consider when buying.

The option of using gas guns is for mounting stretch ceilings. Under the influence of high temperature, the PVC fabric is easily stretched, it does not leave wrinkles and dents.

The best diesel heat guns

After studying the reviews and opinions of users, we included the following devices in the rating of diesel heat guns.

Master B 100 CED

Main characteristics:

• Maximum heating power - 29 kW;
• Maximum air exchange - 800 m³ / hour;
• Protective functions - shutdown in case of overheating.

Frame. This heat gun is mounted on a two-wheeled trolley with a pair of handles for ease of movement. A fuel tank with a volume of 43 liters is fixed from below. Own weight of the unit is 25 kg with dimensions of 1020x460x480 mm.

Engine and heating element. The heater uses the energy of combustion of diesel fuel or kerosene. The maximum liquid flow rate is 2.45 kg/h. A full charge is enough for 14-16 hours of intensive work. The thermal power of the gun is 29 kW. It is enough to heat rooms up to 1000 m3 in winter.

For greater reliability, the burner and combustion chamber are made of stainless steel. Air is supplied in the amount of 800 m3/hour. Its outlet temperature can reach 250°C. The fan consumes 230 W of electrical energy.

functionality and management. For ease of operation and user safety, the unit is equipped with an electronic flame adjustment unit with a lock in case of extinction, a fuel level control device, and overheating protection. It is possible to work in automatic mode with adjustment according to the readings of the built-in or remote temperature sensor.

Advantages of Master B 100 CED

1. High thermal power.
2. Reliability.
3. Easy start.
4. Stable work.
5. Economical fuel consumption.

Cons of Master B 100 CED

1. Large dimensions. For transportation in the trunk of a car, you have to disassemble the structure into its component parts.
2. High purchase cost.

RESANTA TDP-30000

Main characteristics:

• Maximum heating power - 30 kW;
• Heating area - 300 m²;
• Maximum air exchange - 752 m³ / h;
• Protective functions - shutdown in case of overheating.

Frame. This model of the well-known Latvian brand consists of a 24-liter fuel tank and a cylindrical nozzle placed above it. All main elements are made of steel with coloring with heat-resistant compositions. The device weighs a little more than 25 kg, occupying a space of 870x470x520 mm.

Engine and heating element. The heat gun runs on kerosene or diesel fuel. Their maximum consumption reaches 2.2 l / h, while the thermal power is 30 kW. The battery life is 10-12 hours, which is more than enough to heat a large room during a work shift. To improve air exchange, a built-in fan with a capacity of 752 m3 / h is used with an electricity consumption of only 300 watts.

functionality and management. The heater control panel consists of a start switch and a mechanical power regulator. The protection system includes a flameout lockout and an emergency shutdown in case of ignition.

Advantages of RESANT TDP-30000

1. Robust design with the ability to disassemble and assemble.
2. Simple control.
3. Economical fuel consumption.
4. High power with not the largest dimensions.
5. Acceptable price.

Cons of RESANT TDP-30000

1. There are defective products.
2. No transport wheels.

RESANTA TDP-20000

Main characteristics:

• Maximum heating power - 20 kW;
• Heating area - 200 m²;
• Maximum air exchange - 621 m³ / h;
• Protective functions - shutdown in case of overheating.

Frame.Another model from the same manufacturer is a set of a fuel tank with a capacity of 24 liters, with a power unit with a thermal power of 20,000 W, mounted on a fixed support with a handle. It weighs just over 22 kg and has dimensions of 900x470x540 mm. All steel parts are painted. To avoid burns in case of accidental contact, a small gap is made between the nozzle and the outer wall.

Engine and heating element. The liquid nozzle is designed for a maximum kerosene or diesel fuel output of 1.95 l/h. For proper combustion, it needs an excess of air, which is supplied from a built-in fan with a maximum flow rate of 621 m3 / h.

functionality and management. The device is controlled by a start key and a power regulator. For safe operation, the manufacturer has provided a lock in case of emergency ignition or accidental extinction of the nozzle flame.

Advantages of RESANT TDP-20000

1. Quality materials.
2. Good build.
3. Safety.
4. Good power.
5. Convenient management.
6. Affordable price.

Cons of RESANT TDP-20000

1. There is a marriage.
2. No transport wheels.