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Thermal diesel gun - review, application, how to choose the right, useful tips
In warehouse-type premises, garages, hangars, offices or trading floors, workshops, in new buildings, where it is not possible to bring central heating in winter, the question of heating option is very acute. Often, a heat gun is used for this purpose. It should be noted right away that a diesel thermal gun is a device designed to heat non-residential premises of large size and equipped with a high-quality ventilation system. In addition, it is used as a working tool for the installation of suspended ceilings.
Content:
- The most important characteristics of a thermal diesel gun
- Types of Heat Guns
- What is the difference between a direct heating diesel heat gun and an indirect heating unit video video
- Diesel heat gun - how to make the right choice video
- The formula for calculating the power of the heat gun
- Main advantages
The most important characteristics of a thermal diesel gun
The most important indicator characterizing the quality of the unit is performance. It is indicated in the technical passport of the device and shows how many kilowatts a gun can give out when operating at maximum load. Based on the performance, you can make an approximate calculation of the power required for heating the room. If the ceiling height is within 3 m, then for heating 10 sq.m. the area will need about 1 kW of power. Of course, the figures obtained cannot be considered accurate, because the rooms differ in the quality of the ventilation system, the presence and size of windows, doors or gates, the frequency of their opening, the material from which the walls are made, the quality of their insulation, the presence of insulated floors, and outdoor temperature.
Types of Heat Guns
The design of the heat gun is quite simple, it includes a heating element and a fan. Heated by a heating element generated by the combustion of gas or liquid fuel. The powerful air flow generated by the fan very quickly spreads heat throughout the room, while the energy consumption is minimal.
By productivity, all units for space heating can be divided into:
-industrial, more powerful, designed to heat buildings with poor thermal insulation or differing in large dimensions;
- household, more economical in fuel consumption, used for heating rooms with a small cubic capacity.
Depending on the energy carriers used, heat guns are electric, gas, multi-fuel, infrared, with a water heat source, diesel.
In turn, diesel are divided into units of direct and indirect heating.
They can be equipped with open or closed combustion chambers.
Equipped with a corrugated pipe for the output of combustion products, diesel heat guns of indirect heating can be used in rooms with relatively poor ventilation, but if the combustion chamber is open, then the room must be equipped with high-quality ventilation.
Judging by the name, it is easy to conclude that the diesel gun works in diesel fuel, however, this is not entirely true: kerosene or filtered oil can be used as an energy source. The efficiency of such devices is high and tends to 100%.
What is the difference between a direct heating diesel heat gun and an indirect heating unit
The main differences between the two types of guns is that during the operation of devices with direct heating, products of fuel combustion, harmful to humans, are distributed throughout the room along with heated air.
With indirect heating, the combustion products are filtered out in a special chamber with which the gun is equipped. Usually, units operating on the principle of indirect heating are more powerful.
Starting the gun causes the pump to turn on, supply fuel to the combustion chamber, the operation of the fan drives the outgoing heated air. At the same time, one that has already cooled down enters the chamber. Fuel, to improve the quality of combustion, is sprayed with a nozzle, while the crushed particles of diesel fuel are mixed with air.
Diesel heat gun - how to make the right choice
Since the heat gun is capable of creating a powerful stream of heated air, its use will be effective even if it is necessary to heat large cubic-meter rooms with significant heat loss and low thermal insulation. But in order for the operation of a direct heat or indirect diesel heat gun to be sufficiently effective, some points should be taken into account:
- whether constant heating of the room will be required,
- to investigate the level of humidity in the room and the amount of heat loss,
- decide on how much an economical source of heat production I would like to purchase,
- to analyze the conditions in which the unit will be operated, to determine whether the removal of combustion products will be required, whether the heat source will be transferred from one zone of the room to another.
You will also need to calculate at least approximately the required power to obtain optimal heating quality.
The choice in favor of diesel heat guns is usually made if the room is equipped with good ventilation.
The average power rating of diesel units is from 10 to 220 kW, the volume of air flow is about 8000 cubic meters. m per hour.
Choosing a diesel heat gun for a garage or warehouse should be guided by the rule:
- the more powerful the unit, the more efficient it is.
If there is an excess of heat, then it will not be difficult to adjust its intake, but if there is not enough heat for heating, then you will have to spend money on the purchase of another gun. Spending the extra money will not seem expedient to anyone.
Equally important for high-quality heating of the room is the location of the heat source.
For example, in a large room heated by several guns, it would be more rational to arrange them diagonally than along the wall.
It should be borne in mind that warm air always tends to rise, i.e. it makes no sense to place the gun on a stand or on a table, to direct its working edge to the top.
The best option for placing the unit is on the floor, in a horizontal position.
The formula for calculating the power of the heat gun
To calculate the power of a thermal unit, you can use the formula
Q \u003d V x T x k,
in this case, Q means the power required for heating, V is the cubic capacity of the room, T is the difference in temperature inside and outside the room, k is the dispersion coefficient.
To get the temperature difference, you will need to subtract the temperature of the environment surrounding the room from the recommended room temperature.
The coefficient k, depending on the heat-insulating characteristics of the structure, can have values:
3-4 - for not insulated wooden and metal buildings,
2 - 2.9 - for brick (masonry in 1 brick) structures with not insulated windows,
1 - 1.9 - for brick (masonry in two bricks) buildings with a conventional roof,
0.6 - 0.9 - for insulated rooms.
Choosing a heat gun of the appropriate power should take into account its dimensions and weight, because in some cases it will be installed permanently, in others its location will need to be changed.
Main advantages
Although there are many options for heating non-residential premises today, but virtually none of the heating devices can equal the heat gun in terms of efficiency. Among its main advantages should be remembered:
- relatively small dimensions and low weight, which in modern requirements for various kinds of heating equipment are of significant importance,
- convenience and ease of operation, to start the mechanism you just need to press a button,
- the ability to control the temperature in the room, the presence of a rheostat connection system,
- to optimize the operation of the unit, you need to set the desired temperature before starting the gun, shutting off automatically when the desired temperature value is reached.
profitability
An attractive point is the economical operation of the device. For example, a diesel heat gun for a garage will use 1.5 liters of diesel per hour, with an air flow of 550 cubic meters. m, the power of the device will be 20 kW.
Thermal diesel guns according to the instructions are able to instantly warm the air in the room. To heat a room of a sufficiently large cubic capacity with a calculated gun power, it will take only 10-15 minutes to increase the temperature by 10-12 degrees.
security
A positive point is the weak heating of the case - when the gun is working, its temperature rises to only 30 - 35 degrees, i.e. accidental contact with the body of the burns can not cause.
If the ventilation in the room meets the requirements, then the possibility of discomfort from inhaling burnt air or fuel combustion products is completely eliminated.
the possibility of continuous operation without refueling
A large fuel tank, for example, an Elitech diesel diesel gun with a fuel consumption of only 1.3 liters per hour, has a 19 liter fuel tank, which allows it to work for a long period without refueling. Some models generally provide a tank volume such that the gun can work without refueling for a day.
limitations
If we talk about the shortcomings, then the main, and the only, will be strict restrictions on operating conditions: the inability to use in residential premises and the mandatory availability of high-quality ventilation, an oxygen supply system and a system to reduce the concentration of combustion products in heated rooms.
cost
On sale today you can find heat guns of different capacities and working on different types of fuel, but diesel heat guns are most popular, the price of which depends on their power and principle of operation.
It can range from 11 to 60 thousand rubles and above.
