For rapid heating of residential and non-residential premises used by a large area of a heat gun. They are mobile heaters special design, wherein the housing is mounted a special element heats to a high temperature. built-in fan drives off air flow through it, whereby the latter heats up.
The choice of a heat gun is based on the task the device should be addressed. This may be a heating garages, warehouses, greenhouses, a country house. Furthermore, devices are used not only to warm the environment, but also for drying surfaces. On the market are several types of stoves presented with different specifications.
Content:
- How to choose a heat gun
- Best electric heat gun
- Top gas heat gun
- Most diesel heat gun
- Top heat gun of direct heating
- Top heat gun indirectly heated
- Most industrial heat gun
How to choose a heat gun
These factors serve as the basis for choosing a heat gun model:
- Clear objective, under which the selected equipment.
- Functions that should handle the device. This is a constant or periodic heating of premises, drying surfaces.
- room settings - purpose, size, availability of heating devices, as heat insulation. also plays a role possible level of heat loss, the presence and number of window and door openings.
- The source of energy - the usefulness of a particular type of gun, which depends on the availability and cost of coolant.
- Size, portability. This will depend on ease of use and transportation of guns.
- Price.
Type heat gun
Energy supply guns divided into:
- electrical;
- diesel;
- gas;
- water;
- infrared;
- multifuel.
According to the type of heating:
- direct heating;
- indirect heating.
According to the application:
- household;
- industrial.
Power
The main characteristic of heating equipment is the heat capacity. This parameter determines how quickly the air in the room warms up to a predetermined temperature, in other words - the equipment. Characteristic is expressed in an amount of heat that is transferred per unit time environment.
Thermal power some types of heaters:
- liquid fuel: up to 200-220 kW;
- Gas: 10-150 kW and above;
- power: up to 5 kW (50 kW for industrial models).
Air flow
Work heat gun is based on capturing the cold air mass and its passage through the heating element and the "shot" in an environment where there is a mixing of heated and cold air. For all these actions respond built-in fan. Its performance affects the rate of heating of premises. Also, the fan prevents overheating of the elements most casing and the gun.
Airflow characterized volume of air mass, which is passed through the gun per hour of work. The value of this parameter determines the speed of warming up the room to the desired temperature. The power of the device depends on its performance.
Keep in mind that the air flow, as a characteristic, can not be applied to infrared devices, since the models of this type there is no fan.
Mobility, weight and dimensions
Dimensions and weight are directly dependent on the type of a heat gun and its power. For small premises compact and preferred lightweight modelsAnd heavy and the overall apparatus used in warehouse and industrial premises of a large area.
electrical heaters the most compact. With a weight of 30 kg, they are easily transported, installed anywhere in the room, that is, are mobile by default. Domestic gas models, although they are small, only partially mobile. The fact that they need to connect to the gas pipeline, and this time they have become stationary. As for the diesel variants of the heaters due to the fuel tank and combustion chamber are the most massive, but many models are equipped with transport wheels. The exception is the gun indirectly heated, requiring connection to a stationary chimney.
Industrial heat guns have impressive dimensions and initially designed as stationary equipment. Among them are models weighing up to several tons. Such climatic equipment is mounted on a specially prepared site, able to withstand such loads.
Security
Heat gun is inherently fire appliances. High power and high operating temperatures imply the presence of a heat-resistant casing and additional safety systems:
- Protection against overheating - off the heater when heated to a certain (critical) temperature.
- Rollover Protection - turns off the unit in case of violation of its stability.
It is understood that any heating equipment must be made of materials resistant to various damages.
noise
Any heat gun makes a noise. Its level at rated power must be indicated in the documentation for the equipment. For those models that will be used in areas where the noise level does not matter, this option can safely be ignored. As for accommodation, it is preferable to lower noise output devices. As an example, a gun with indirect heating issue with the noise to 40dB.
air burning
The type of heating element gun directly affects the amount of oxygen combustion device. This should be considered when choosing a heater for installation in residential premises. Combustion large amount of oxygen is accompanied by proliferation of indoor specific odor. For example, ceramic heating elements burn oxygen to a minimum, so that they are preferable for premises (in contrast to the spiral embodiment).
Calculation of the heat output required
To calculate the power of the heat gun, which is capable to heat a specific room to a certain temperature, it is possible to use a simple formula:
Q = k × V × ΔT
Where:
- Q - heat gun power, measured in Kcal / h. To convert a value to all the usual kW, it is necessary to divide by 860.
- K - heat dissipation coefficient. For buildings without thermal insulation value of 3.0 - 4.0 poor insulation: 2.0 - 3.0, average: 1.0 - 2.0 Good 0.6 - 1.0.
- V - the internal volume of the room, as measured in cubic meters.
- ΔT (degrees Celsius) - the temperature difference between the room and the outside temperature, which is required to heat the inner space.
As an example, we can calculate the required power of the heater for a garage with a ceiling height of 3.5 m and 30 sq.m. Given the lack of windows in this case, a single brickwork and well insulated gate, the heat dissipation rate will be around 2.5. Outdoor average temperature of -30 ° C and warmed to room requires + 15 ° C. As a result, the required power will be 13.7 kW heater.
This formula works only if the room is excessive heat. Otherwise, the power of each of them will have to be taken into account. In addition, the dial TDP can summation indices of several heat guns. Using more than 2 and the indoor unit, it is possible to achieve a greater internal air warming rate to the desired temperature
Best electric heat gun
Elektropushki used in household, construction and industrial sectors. Simple principle of operation allows you to select a device that is suitable for specific tasks without difficulty. Among them:
- heating dwellings, drying of cellar thawing vehicle;
- drying plaster walls, installation of suspended ceilings;
- Heating of industrial premises.
The principle of operation of the electric heater is simple enough: fan It captures the cool air and drives it through the heating chamber, and then produces a high speed to the outside.
Electric models are equipped with a thermostat and the thermostat, unplug the appliance has reached a certain ambient temperature.
pros
- safety due to the absence of an open flame and combustion process;
- lack of combustion gases and odors;
- compactness and portability;
- noise floor;
- no need for fuel;
- high efficiency;
- cost.
Minuses
- need for a mains electricity supply;
- Industrial models - the need for a 380 V mains connection
The best models
- Timberk TIH R5 3M ECO - better performance.
- Elitech TP 2EM - optimum cost.
- Ballu BKX-5 - better performance model with a ceramic heater.
Top gas heat gun
Gas heaters are mainly used for heating of industrial buildings, sheds, greenhouses, greenhouses, on building sites. The principle of operation is based on heat generation by combustion gas (propane or butane).
Power gas heaters may be up to 100 kW or more. They are economical and high efficiency, because the fuel burns completely. To power the central gas pipeline or cylinder can be used. Thus it is necessary to comply with the above model in a passport gas pressure which depends on the power of the device. When severe frosts become unstable, require good ventilation of rooms, since oxygen is burned in the process.
pros
- efficiency;
- mobility and small size (for household models);
- efficiency;
- odorless;
- reasonable cost.
Minuses
- the need for good ventilation of the room;
- Periodic replenishment of fuel reserves in the absence of a central gas line;
- sensitivity to low temperatures.
The best models
- Interskol TPG-10 - the best installation and the cost of protection.
- Master BLP 17 M - the best ratio of price and quality.
- Ballu DHG-10 - the best fuel consumption.
Most diesel heat gun
Diesel heaters are used in production areas with good ventilation. Their principle of operation is similar to a blowtorch, however, hot air is supplied and fired internal fan.
Instruments are expensive, but they have impressive power along with low fuel consumption. Equipped with a fuel control system, there are direct and indirect heating. For the convenience of moving devices are equipped with wheels. The main weight is on the fuel tank is filled, which can reach a volume of 50 liters or more. They are primarily used where there is no access to power, what is expressed in their autonomy. Among the additional features may include power control, electronic ignition, flame control, thermostat, connection flexible fuel hose.
pros
- portability and light weight in the "dry" form;
- power and heating efficiency;
- efficiency;
- reliability and ease of maintenance;
- autonomy.
Minuses
- the presence of combustion products;
- noise level;
- cost.
The best models
- Master BV 77E - the best functionality.
- Profteplo DK-36PL - better efficiency.
- Elitech Standart TS 22DB - the best assembly and accessibility.
Top heat gun of direct heating
Used for heating residential premises with good ventilation. In operation, the combustion products are mixed with the supplied air fan and then are released into the surrounding space. Thus, the ambient air is saturated not only products of combustion but loses oxygen.
direct heating guns are mobile and have efficiencies close to 100%. The devices are not intended for connection to the chimney, noisy, consume oxygen during operation. Outlet air temperature can reach 400 ° C. Depending on the model, their capacity is in the range 10-220 kW, and all of it goes to heating the surrounding environment. Devices are equipped with a reliable heat-resistant housing, the flame monitoring system, fuel level sensor, external resistances.
pros
- high efficiency;
- mobility;
- efficiency;
- power;
- autonomy.
Minuses
- need for ventilation;
- selection combustion products directly into the room;
- noise level;
- cost.
The best models
- Prorab DP 50 - better performance.
- Neoclima NPD-26C - best technical solution (removable tank).
- Master B-35CED - better efficiency.
Top heat gun indirectly heated
Used for heating non-residential industrial buildings of various sizes, where ever there are people. Permanently installed, as they require connection to a flue for removing combustion products formed. Nevertheless require oxygen supply due to its combustion during operation. Given that the exhaust is discharged into the atmosphere outside the building to be heated, completely safe for humans.
Due to the fact that the exhaust is discharged through the chimney and does not take part in the heating of the ambient air, the devices have a lower efficiency (about 60%) than direct heating options. The combustion chamber is set closed. Maximum power up to about 75 kW, but there are models, where in one case there are several guns. They are able to deliver up to 220 kW total power.
pros
- autonomy;
- power;
- the output of the exhaust gases out of the premises;
- efficiency;
- There are no restrictions for use.
Minuses
- low efficiency;
- the need to connect to the chimney and the dependence of its location;
- lower temperature of heated air.
The best models
- Master BV 77E - the best functionality.
- Master BV 690 FS - the best modular assembly.
- Oklima SE / S 300 - the best outboard heating for a large area.
Most industrial heat gun
high-power devices that can quickly heat a large industrial premises, as well as to maintain the desired temperature for a long time. Industrial models are fixed installations, at least - mobile options. Performed in a suspended or floor structure. There is a special dimensional model provided for installation close to the buildings warming up. In this case, the heated air is supplied into the room through a special sleeve.
Weight models industrial heat guns often exceeds 200 kg. stationary mass of options may be more than 1000 kg. When the thermal power of 220 kW per hour, they are capable of delivering up to 14 thousand. cubic meters of hot air. As a rule, the volume of the fuel tank to the largest representatives rarely below 500 liters (for oil models).
pros
- power (often over 100 kW);
- the rate of warming large volumes of air.
Minuses
- weight and dimensions;
- noise level;
- cost;
- the need for a network 380 (for electric models).
The best models
- Remko HTL 250 - the best performance of the block.
- Heatmobil Tank HTL 250 - the leader in secure and does not require high quality fuel.
- Betox 1200 - better efficiency (efficiency 88% at the indirect heating).
