How to choose a heat gun on diesel fuel for heating the premises

Having the appropriate heating system in our homes is essential to keeping them warm and comfortable. One option that has grown in popularity is the use of a diesel-powered heat gun. These adaptable gadgets provide effective heating for a range of areas, including temporary shelters, construction sites, and workshops. However, choosing the best diesel heat gun can be difficult due to the abundance of options on the market. We’ll go over the key elements to take into account in this guide when selecting a diesel heat gun to heat your space.

Prior to anything else, it’s critical to comprehend the advantages of diesel heat guns and how they operate. Diesel heat guns produce heat through the burning of diesel fuel, as opposed to conventional heating systems that rely on electricity or natural gas. This makes them especially appropriate for locations where gas or electricity access may be restricted or impracticable. Diesel heat guns are also well-known for being portable, which makes them perfect for heating temporary or outdoor areas.

One of the most important things to look for in a diesel heat gun is its heating capacity. A heat gun’s heating capacity is commonly expressed in British Thermal Units (BTUs) per hour. The gun can efficiently heat larger spaces because it can produce more heat with a higher BTU rating. To achieve the best results, measure the area you want to heat and select a heat gun with the right amount of heating power.

The diesel heat gun’s fuel efficiency is another important consideration. Choosing a fuel-efficient model can help reduce operating costs over time because diesel fuel can be pricey, particularly during the colder months when heating demands are higher. Seek for heat guns with features like thermostatic controls and adjustable heat settings, which reduce fuel consumption and enable precise temperature regulation.

Examining the diesel heat gun’s longevity and dependability is crucial, in addition to its heating capability and fuel efficiency. Selecting a robust and well-built heat gun is crucial to guarantee longevity and performance because construction sites and other harsh environments can subject equipment to extreme conditions. Take into account elements like the building materials, the manufacturer’s standing, and the available warranty choices.

Finally, when choosing a diesel heat gun, pay attention to safety features. These devices involve combustion, so improper use could result in carbon monoxide emissions or fire. Seek for heat guns with integrated safety features like automatic shutdown, overheat protection, and flameout prevention. Additionally, to avoid dangerous fume accumulation when using diesel heat guns indoors, make sure there is adequate ventilation.

Factors to Consider Key Points
Heating Capacity Ensure the heat gun can adequately heat your space.
Fuel Efficiency Choose a model with optimal fuel consumption to save costs.
Portability If you need to move the heat gun around, consider its weight and size.
Safety Features Look for features like overheat protection and flameout detection.
Reliability Read reviews to gauge the durability and performance of the heat gun.

Three varieties of heaters on diesel fuel

For a considerable amount of time, diesel fuel has been burned to heat buildings. At the very least, keep in mind the OV-65 air stoves that were mounted on the army closed trucks bearing the "Ural" and "ZIL" brands. Similar technology is used by new diesel heat generators, but they are constructed of contemporary materials and have electronic automation.

The air that is pushed through a cylindrical combustion chamber by an axial fan is heated by burning diesel in the solar heat gun. The products fall into three categories based on the way they are heated and released into the atmosphere:

  1. Direct heated guns emit smoke into the heated room. Accordingly, it is inadmissible to use such air heaters inside the dwelling.
  2. Indirect heated heat generators are equipped with a side spigot for connecting a chimney and venting combustion products to the outside.
  3. Infrared heating devices also pollute the air by emitting exhaust gases into the room. The difference from the previous models is the increased area of the heating plate, which emits radiant heat.

Citation. We will highlight a few well-known heat gun manufacturers: Master, "Aurora," Ballu, Elitech, and "Zubr." Household units have a heating power range of 10–30 kW, while industrial thermal gun models have a productivity of up to 150 kW.

Let’s examine each type of heater’s device in detail before weighing the advantages and disadvantages of each.

Direct heating principle

The following components make up this kind of cannon:

  • the cylindrical body of the heater and the tank with diesel fuel are attached to a metal frame (usually equipped with wheels);
  • in the front part of the housing there is a combustion chamber made of stainless steel or ceramic;
  • on the back side of the chamber is located fuel nozzle, glow plug and photoelectric flame sensor;
  • there is a plate on the front side of the firebox to reflect the open flame;
  • in the rear half of the case there is a blower fan, fuel supply system and electronic control unit with a thermoregulator.

Note: The reflective plate’s secondary purpose is to transfer radiant heat to nearby objects that are three to five meters away.

The air diesel heater is essentially turned on by pushing a button and adjusting the room temperature regulator. It is connected to the 220 volt power source via a standard cable. How the solar heater operates

  1. The user pours diesel fuel or purified kerosene into the tank, plugs the unit into the mains and sets the desired air temperature.
  2. The fan and fuel unit are started, the fuel is fed from the tank to the nozzle, where it is mixed with air.
  3. Fuel-air mixture in the form of a fine mist is injected into the chamber and ignited by an electric glow plug. A photocell registers the appearance of fire and after a few seconds the controller switches off the ignition electrode.
  4. The main mass of the air mixture blown by the fan washes the walls of the combustion chamber from outside, then the heated stream leaves the "barrel" of the gun. Less air is burned with the diesel engine and exhausted as exhaust gases.
  5. When the liquid fuel runs out or the burner goes out for other reasons, the photosensor will react and inform the control unit. The latter will stop the pump and cut off the fuel supply, the fan will stop working after 15-30 seconds.
  6. Burning is automatically switched off when the thermostat detects that the environment has heated up to the set temperature. After the room cools down, the burner will resume operation.
  7. Heaters of well-known brands are equipped with a sensor for tipping the unit, breaking the electrical supply circuits.

To be clear. In the event of an emergency shutdown, the heater will not turn on by itself. The product’s instruction manual states that after determining and removing the stoppage’s cause, the user must repeat the ignition process.

Piezoelectric ignition is used in manual start systems found in older or more basic liquid fuel guns. These units lack a temperature regulator, but they do have overheating and safety automatics.

Indirectly heated air heaters

This group’s diesel heaters are set up a little differently:

  • The combustion chamber is completely closed, the refractory plate is sealed tightly and is the front wall of the firebox;
  • The blown air is heated only by the outer wall of the chamber, the heat exchanger and the reflector plate;
  • Combustion products are discharged outside through the upper vertical branch pipe;
  • the thermo gun needs to be connected to a chimney pipe.

Reference: Stainless steel two- and three-way heat exchangers are used in the heaters. Heat from the chamber walls and other channels that the glowing combustion products pass through are removed by the air flow. The smoke travels through two or three stages before entering the chimney, depending on the heat exchanger’s design.

The diesel appliance can be used to heat enclosed spaces with inadequate ventilation because it has an exhaust gas outlet that faces the street. However, because residential homes do not have a draft sensor or suitable automation to protect occupants from carbon monoxide, indirect heating guns are still prohibited.

Design differences between infrared models

The concept of localized surface heating within the gun’s action area is known as radiant heat transfer. The area that is exposed to radiation can be found outdoors or in a room of any size. It should come as no surprise that warming the air in such circumstances is pointless.

What sets apart convective air heaters from a diesel infrared gun:

  • the source of radiant heat is the front refractory screen;
  • to expand the radiant area, the diameter of the plate and housing is increased;
  • air is supplied in small volumes, sufficient for burning the fuel oil and cooling the burner;
  • The flue gases exit directly into the room through many small holes made in the screen.

In contrast. It is claimed that infrared solar heaters are more cost-effective than convective (air) heaters. These are the specifications of two cannons: the 30 kW direct-burning Ballu BHDP-30 and the 29 kW radiant heater "Master" XL 9 SR. The difference between the two cases’ diesel consumption—2.4 kg/h in the first and 2.3 kg/h in the second—is essentially negligible.

The infrared liquid-fuel heat fan shares a design with a comparable gas gun. In the winter, these units are frequently utilized for a range of outdoor tasks since they heat surfaces rather than air.

Features of fuel supply

You will undoubtedly notice that the guns’ designs differ when examining the aforementioned diagrams; some show an air pump, while others show a liquid-fuel pump. There are two methods for supplying diesel fuel to the heater nozzle in products made by different brands:

  1. Electromechanical.
  2. Injection.

Using the main injector and the high-pressure fuel pump (HPF) depicted in the picture is the first option. A diesel car engine’s fuel supply is arranged similarly. The nozzle injects fuel into the chamber where it mixes with air and ignites by high temperature (or compression in internal combustion engines) when the pump presseurizes the main line.

This is how the ejection fuel supply operates:

  1. Inside the low-pressure nozzle 2 channels converge – air and fuel channels.
  2. The rotary compressor installed at the rear of the gun blows air into the first channel, which creates a vacuum in the second channel.
  3. Ejection effect occurs – vacuum begins to draw fuel from the tank through the fuel tube.
  4. Once in the nozzle, the fuel mixes with the air stream and is directed to the chamber, where it is successfully burned.

Remarkable fact. Rotary type compressor and fan – blower of heated air are driven by a single electric motor. That is, both impellers are mounted on a common shaft, the number of revolutions and performance is regulated by electronics.

In the appropriate filters, the diesel fuel and the air stream drawn in by the compressor are cleaned coarsely and finely. More expensive models of heat guns come with an LCD screen and a fuel level sensor installed.

When it comes to selecting a diesel fuel heat gun for heating your space, it"s crucial to consider several key factors to ensure you make the right choice. Firstly, assess the size and layout of the area you need to heat to determine the appropriate heat output and coverage capacity of the heat gun. Next, take into account the fuel efficiency and operating costs associated with different models to find one that fits your budget and energy requirements. Additionally, consider the safety features offered by each heat gun, such as automatic shut-off mechanisms and overheating protection, to prioritize the well-being of both your property and its occupants. Lastly, research reputable brands and read customer reviews to gauge the reliability and performance of the heat gun before making your final decision. By carefully considering these factors, you can confidently choose a diesel fuel heat gun that meets your heating needs effectively and efficiently.

Pros and cons of diesel heaters

The primary benefit of solar heaters is their independence, if user feedback is any indication. When there are no other energy sources, such as main gas and solid fuel, or when the amount of electricity that can be consumed is very restricted, an air heater is essential.

Overview. Electricity consumption for the compressors and fans of powerful models with heat output exceeding 120 kW is approximately 1000 W. Domestic series apparatus "winds up" the meter to 200–300 watts.

Liquid fuel heaters also have the following benefits:

  1. Mobility of installation and efficiency of heating organization. Time expenditures are minimal – bought the gun – brought it to the place – filled the fuel – turned on the heating.
  2. The unit is easy to move from one site to another.
  3. The efficiency of the heater is quite high – manufacturers claim an efficiency of about 83%.
  4. Heating rate. According to this indicator, the diesel burner wins over electric heaters.
  5. Versatility. The apparatus is suitable for open areas and any premises of large volume, except for residential ones.

Allow us to elucidate a fascinating aspect concerning the efficiency factor. Some vendors assert that direct combustion heaters, which release fumes inside the building, are more efficient than indirect diesel cannons. These units achieve 100% efficiency because the heat from combustion products is not released into the street, Mol.

The efficiency of the various guns is actually quite similar, although some of the heat and smoke are expelled outdoors by indirect heating units. Now, open the documentation for any direct combustion heater and read the requirements for safe operation: supply and exhaust ventilation, or intensive ventilation, is required to remove harmful gases.

In summary, direct-flow guns release all of the heat into the heated room; however, ventilation removes 20–30% of this energy. That is to say, even though direct-flow units are less expensive than chimney models, the actual losses and efficiency of the two heating devices are roughly equal.

Heat generators that burn kerosene and diesel have the following drawbacks:

  • The price of diesel guns is lower than that of electric devices such as convectors and fan heaters;
  • diesel fuel is not the cheapest energy carrier:
  • operation of the heater is accompanied by the smell of diesel oil and exhaust gases;
  • Medium and low quality fuel sold at gas stations quickly clogs the working parts of the thermo gun with soot, and the unit has to be serviced frequently.

Selection of liquid-fuel heat generator

Finding out the device’s heat output should be your first step. There are some nuanced aspects to this: the cannon cannot be computed with conventional methods because the unit is frequently used to heat large spaces and uninsulated rooms. The suggested methodology is as follows:

  1. Measure and calculate the volume of the heated room V, m³;
  2. Find out the difference between outdoor and indoor temperatures during the coldest period Δt, °C;
  3. Determine the dimensionless coefficient k of heat loss of the building and calculate the heater power Q using the formula below.

Suggestion made. Depending on the kind and level of the building’s thermal insulation, the value of coefficient k should be determined. Garage k = 4, wooden shed – 3, brick summer house – 2…2.9, for a metal hangar, depending on wall thickness. Take the coefficient between 0.6 and 0.8 if the building is well-insulated, with an average thermal insulation of 1…1.9.

For instance. Let’s figure out how much heat a solar gun can produce for a 10 x 5 m uninsulated iron box with a 3 m ceiling. The room’s volume is V = 10 x 5 x 3 = 150 m³. Assume that the internal temperature is 10 °C and the street temperature is -25 °C.The difference is Δt = 35 °C. The amount of heat required is: Q equals 24.4 kW (150 x 35 x 4) / 860.

How to select the appropriate cannon based on the usage circumstances:

  1. A direct heater is suitable for heating production facilities, closed construction sites, hangars and warehouses. If people are constantly working in the building, supply ventilation is mandatory!
  2. In private garages, car service stations, greenhouses, stables and other outbuildings, it is better to buy and install chimney thermal guns.
  3. Infrared heating devices are perfectly suitable for any local heating. Example: a production hall with high ceilings or an open area where the entire air volume cannot be heated, but a limited area can be heated.
  4. Use the heater selection algorithm presented in the table:

Look into outdoor high power gun versions if you need to heat an entire small industrial facility. As seen in the above photo, the unit is located outside the building and multiple ducts are installed inside for improved flow distribution.

Heater maintenance and repair

In the process of long-term operation of the gun arise minor malfunctions, which the user can eliminate with his own hands. Signs of malfunctions and repair methods:

  1. After turning on the unit, the unit starts up, but it quickly dies out. Remove the flame sensor from the socket and remove soot from the working lens.
  2. If heating intensity has decreased, clean the air and fuel filters. The manufacturer recommends changing the filter elements at 500 hour intervals.
  3. Difficult or no ignition of the fuel-air mixture. Unscrew the spark plug, remove soot and adjust the gap between the electrodes (usually set at 1.4…1.5 mm).
  4. Reduced efficiency and black smoke indicates a clogged nozzle. In most models, the part is easily removed and cleaned, if you can not cope – call a master.
  5. Another cause of difficult start-up is compressor problems. The unit should be cleaned and set the working pressure, if necessary – lubricate the electric motor.

On the back plane of the burner head are the glow plug and nozzle. The air from the compressor and fuel supply are connected to the atomizer through two pipes, and the igniter is connected to a high-voltage cable. The latter is frequently pierced to the point where the spark on the spark plug loses its "mass."

Within the supply tube that is lowered into the tank is the fuel strainer. It should be noted that the tank needs to be flushed every 500 hours. A screwdriver can be used to remove the air cleaning elements that are situated on the compressor’s rear panel. Watch the video to learn how to clean the heat gun’s nozzle:

Selecting a diesel-fueled heat gun to heat your space is an important choice that needs to be well thought out. Making the best decision requires understanding your unique needs and preferences in light of the many options on the market.

The size of the area that needs to be heated should be your first priority. Because heat guns come in a variety of sizes and capacities, choosing the right size will guarantee effective heating without wasting needless energy. It’s also important to evaluate the insulation on your property because poorly insulated spaces require more heating energy than well-insulated ones.

The heat gun’s efficiency and fuel consumption should also be taken into account. To ensure long-term cost-effectiveness, look for models with high efficiency ratings and low fuel consumption. The cost and accessibility of diesel fuel in your area should also be taken into account, as these elements will affect the heat gun’s overall running costs.

Additionally, be mindful of the heat gun’s safety features. To reduce the chance of accidents, select a model that has safety features like overheating prevention and flameout protection. To guarantee safe operation, the heat gun must also receive proper maintenance and routine inspections.

When making your choice, don’t forget to take customer feedback and brand reputation into account. Select a dependable and respectable manufacturer who has a solid track record of creating durable, well-performing heat guns. Perusing other users’ reviews can yield insightful information about the benefits and drawbacks of various models.

In conclusion, careful research and consideration of a number of factors, including size, efficiency, safety features, fuel consumption, and brand reputation, are necessary when choosing the best heat gun for diesel fuel heating your space. You can select a heat gun that satisfies your needs and offers effective and affordable heating for your house or place of business by taking the time to consider your preferences and needs and weigh your options.

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Sergey Ivanov

I like to help people create comfort and comfort in their homes. I share my experience and knowledge in articles so that you can make the right choice of a heating and insulation system for your home.

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