Industrial heaters and heaters. Gas heat generators Siabs Kaliente - elegant heating

Gas convectors are independent heating equipment that represents a real alternative to traditional heating appliances. They provide not only the ability to maintain a predetermined temperature in the range from 8 to 33 ° C in a heated room, but also allow you to set different temperatures in different rooms.
Convectors work on the principle of natural gas combustion in a metal heat exchanger, which provides highly efficient heat transfer to the room. At the same time, combustion products are removed to the outside and combustion air is drawn in. This ensures the environmentally friendly premises and effective ventilation.

Compared to a traditional heating system, which requires boilers, radiators, room piping, fittings, pumps and other components, when using convectors, all this equipment is not required, since there is no water circuit. It is this feature of gas convectors that allows them to be used for efficient heating of country houses, cottages, garages, greenhouses, etc. The gas-air mixture in these devices is ignited either by a spark from the electronic unit, or by the wick of the pilot pilot burner, which, in turn, ignites when the button of the built-in "piezo lighter" is pressed. In the latter case, no electrical power supply is required.

Figure: 91.: A - general view; B - section (in mm); 1 - igniter; 2 - control panel; 3 - tray for burner ignition; 4 - impulse lines; 5 - gas valve; 6 - chimney

An example of such equipment is the AOG-5 gas-air heater, the appearance and installation option of which are shown in Fig. 91. The device is designed to heat rooms up to 30 m2. The main components of the device are: housing, combustion chamber with a smoke outlet and a duct for air supply, a wall duct with a grate, a solenoid valve with a thermocouple, a piezoelectric ignition device. The control panel for the gas valve, buttons for switching on the solenoid valve and the ignition device is located on the front wall. The device does not require a special chimney, as it is equipped with a wall duct through which combustion products are removed and outside air is supplied to the firebox. The heater is equipped with an automatic safety device that cuts off the gas supply to the main and pilot burners when the pilot flame goes out. The technical characteristics of the AOG-5 air heater are shown in Table 10.

Table 10. Technical characteristics of the air heater AOG-5

Figure: 92. Gas fireplace "Amra": 1 - injection burner; 2 - collector-heat exchanger; 3 - electromagnetic valve; 4 - gas supply; 5 - smoke outlet

Gas fireplace "AMRA" is a radial-convective type device (fig. 92). The infrared burner GIIV-1 with a heating capacity of 35 - 46 kW is installed in the fireplace body stamped from steel sheet. The primary combustion air enters the burner through openings in the bottom of the casing, and the combustion products are discharged into the chimney through a heat exchanger to a branch pipe at the back of the fireplace. Through slotted holes in the walls of the housing, air from the room enters the walls of the heat exchanger, heats up and goes out into the room. The fireplace is equipped with an automatic safety device that ensures that the gas is switched off when the flame is extinguished. The device operates on liquefied gas supplied through a pressure regulator from a cylinder with a capacity of 27 liters. One cylinder allows the fireplace to work in normal mode for 45 hours.

The Czech company KARMA supplies the Russian market with beautifully designed and equipped with multifunctional automation devices of the "BETA" series with electronic spark or pilot-burner ignition of the main burner. The consumer and operational characteristics of this device can satisfy any, even the most sophisticated, taste. However, the price of this heater frightens off the broad masses of consumers. Thus, heaters of the "BETA-Comfort-Electronic" model with a capacity of about 4 kW cost about 420 dollars. USA. Functionally practically equivalent, but much cheaper, air heaters from MORA (Czech Republic) and FASER (Poland). Various models of these devices have a power in the range of 2-5 kW and are very similar in technical characteristics, which include:

• the ability to operate on bottled and natural gases in the pressure range of 50 - 200 mm water column;
• ignition of the working burner from the wick of the pilot pilot burner ignited from the button of the built-in piezo lighter;
• ensuring complete safety (stopping the gas supply when the ignition burner is extinguished or in case of disruption of the gas-air exchange with the external environment);
• automatic maintenance of the air temperature in the heated room at a given level (within +10 - + 30 ° С) by smoothly changing the burner power or turning it on and off;
• quick reaction of the heater to possible changes in ambient temperature and optimal gas consumption, which is ensured by a low-inertia steel heat exchanger;
• ability to work stably with wall thickness from 5 to 60 cm.

Comparative characteristics of air heaters MORA (model 6101) and FASER (model JGK-F4.2), having the same power of 4.2 kW and capable of heating a room up to 42 m2, at an average temperature of 100 W / m2 and a ceiling height of 2.5 - 3 m are shown in Table 11.

Table 11. Comparative characteristics of air heaters MORA and FASER

Domestic-made "heat guns" of the TROPIK series can compete with foreign-made heaters. These fan heaters have a unique and most complete set of consumer qualities and a number of advantages over any domestic counterparts, and the relatively low price allows them to successfully compete with the famous import legislators of the "heating fashion". A wide range of models (heating power from 2 to 15 kW) makes it possible to choose a suitable model "TROPIK", and the wonderful design will fit well into the interior of any apartment or office. The silently operating fan does not create any inconvenience when listening to quiet music, and the convenient control system provides the ability to work at full or partial heating power. Fan heaters "TROPIK" are equipped with a double thermal protection system (bimetallic thermostat and thermostat), which will eliminate overheating and disconnect the device from the network in case of an emergency.

The principle of operation of night vision systems is based on the combustion of natural gas in a stream of heated air, which ensures 100% efficiency.
PNV systems consist of a duct section with a modular burner block inside. A gas pipeline with control and shut-off valves is installed outside the air channel. The system is equipped with automatic ignition, flame control and safety, an intelligent temperature controller, which allows to produce heat in strict accordance with the needs. Areas of use: Air heating of industrial premises - an ideal solution to heating problems for industries with a large supply air volume. Heating up frozen materials in cars and on railway platforms - the most reliable and economical way of defrosting, due to low inertia and the absence of a water cycle. Air thermal curtains road and rail gates cut off the flow of cold air. The ability to quickly shutdown saves natural gas. Two-stage air heating. Intermediate heating of air due to combustion of natural gas with subsequent heating in a water heater. Air preparation for spray booths a simple way to supply a large amount of clean and dried air at a given temperature into the spray booth. Drying: textiles, paper, grains, malt ... The temperature controller allows you to supply the optimal drying agent, suitable in terms of purity for drying food.
Advantages of direct air heating systems:Compliance. The technology of ultrapure natural gas combustion ensures exact compliance with GOST 12.1.005-88 "General sanitary and hygienic requirements for the air in the working area" and SNiP 2.04.05-91 "Heating, ventilation and air conditioning". High fuel efficiency. All the chemical heat of the combustion gas is transferred to the air. Heat losses inherent in boilers and heating mains are completely excluded. Exceptional reliability and long service life. The well-developed construction of the burner block and the right choice of materials ensure high reliability of heat supply. No water cycle. Versatility. The modular design allows assembling a burner block of any configuration and power from 150 kW to 20 MW and above. Low installation and operating costs. Use of existing ventilation systems. No special combustion chamber, lining or additional fan required. Flexible temperature control and inertialessness. The production of heat in strict accordance with the needs significantly reduces gas consumption. Fast payback. The payback period is not more than one heating season. Our customers have repeatedly noticed that by investing in NVD systems, they received not just equipment, but clean air and heat at their workplaces, a significant reduction in heating costs, an increased production culture, stable product quality and increased profits.

Administrative, industrial, utility and many other premises. These include hot water radiators, various convectors, heat guns, infrared heaters and more. A gas heater is another modern heating device that is optimally suited for heating any type of room and even open areas.

In this review, we will consider:

• main types of gas heaters;
• operating principles of devices;
• advice on choosing and buying such devices.

We will also tell you where and how to make the most profitable purchase.

The principle of operation of gas heaters

The devices are represented by a large selection of various models, differing in the principle of operation and power. All these devices have one thing in common - they work from liquefied or natural gas, converting it into thermal energy... Gas cylinders or a gas pipeline can be used as a gas source. The heating devices themselves are divided into stationary and portable.

Firefighters heat up the room by burning gas. They are quite economical, like all gas powered devices.

Stationary gas heaters are convectors or heat guns powered by main or balloon gas. They are permanently mounted indoors and used as the main sources of heat. Such devices are large and highly efficient, and for their operation, a chimney is needed to remove combustion products.

Mobile (portable) models are intended for temporary or semi-permanent operation. They are small in size and less efficient. Most often, such models are made in small-sized enclosures for floor-standing installation. They are optimal for heating summer cottages, private houses and utility rooms in which there is no centralized gas supply.

According to the principle of operation, heaters are divided into several categories:

• infrared;
• catalytic;
• convection.

The principle of operation of infrared heaters is very simple - inside them there are burners with metal and ceramic radiators. As they heat up, they begin to emit infrared waves (heat radiation). At the same time, the air near the heaters remains practically cold - only the surrounding objects are heated. Depending on the capacity, they can heat large enough rooms and open areas.

In the combustion chamber of the catalytic device, there is no combustion as such, a chemical reaction takes place there.

Catalytic gas heaters are built on the principle of oxidizing natural or liquefied gas. There is no flame here, and the generation of heat is provided by a chemical reaction. The gas enters a special catalytic panel, where it begins to oxidize, helping to generate heat. Heating is carried out by convection, infrared or mixed operation.

Convection gas heaters have an extremely simple device - they are based on conventional burners in which fuel is burned. The air is heated using special finned radiators. Thanks to convection, the heated air goes up, after which colder air masses enter its place. Two to three hours after the launch of such devices, it becomes noticeably warmer in heated rooms..

Infrared gas heaters can generate heat not only by burning gas but also by catalytic oxidation. Some models of such devices create fluxes of thermal radiation and provide convection - thereby achieving fast and efficient heating of the premises.

Types of gas heaters

There is a fairly large selection of heaters on the heating market. They differ in their operating principle and scope. Let's take a closer look at some of the models from some of the categories.

As we have already said, catalytic devices heat premises not due to direct combustion of gas, but due to its oxidation. As a result, we get absolutely silent and fireproof heating equipment... There are no burners, no raging and hissing flames. Heat is generated by a chemical reaction taking place on the surface of the catalytic panel. What are the advantages of this equipment?

• Extremely compact - catalytic gas heaters are minimal.
• Lack of combustion products - heaters do not burn oxygen and do not emit combustion products, which include carbon monoxide and carbon dioxide.
• Autonomous work - such devices do not need electricity.
• Economical fuel consumption - gas consumption of such devices is minimal.
• High level of safety - the absence of burners and open flames is a good protection against fires.

Despite the safety of catalytic heaters and the absence of hazardous combustion products, their operation in confined spaces is not allowed - good ventilation must be provided.

Catalytic heaters are highly efficient heat generators. It is transmitted to heated rooms in two ways - by convection or by infrared radiation. Some models use a dual heating circuit. To improve performance and speed of warm-up, individual models are equipped with fans that provide quick and even heat distribution.

Infrared gas heaters

If catalytic gas heaters are used mainly for heating premises, infrared devices with burners can also warm open areas - playgrounds near swimming pools, sports and playgrounds, summer cottages, as well as open terraces of restaurants and cafes. The principle of operation of such devices is to generate infrared (thermal) radiation due to the combustion of gas and heating of the emitting elements. The radiation does not heat the air, but the surrounding objects, which allows you to gently warm rooms and open areas.

Infrared radiation is generated by ceramic and metal heating elements, and built-in reflectors are used to create a targeted area. Thanks to this design, infrared heaters have a decent range of action - for example, street models can heat objects within a radius of 5-6 meters. And this indicator is very attractive.

Natural or liquefied gas is used as fuel for infrared heaters. Most often, consumers use precisely bottled fuel, since infrared heating equipment belongs to mobile (portable) equipment. Some models are even equipped with slots for connecting built-in cylinders with a volume of up to 27 liters - such devices are made in the form of a monoblock with a built-in (plug-in) cylinder.

If you plan to use it indoors, nothing prevents you from connecting the infrared to the gas line using a flexible hose.

Infrared devices are great for heating open areas, as they heat not the air, but the surrounding objects.

Advantages of infrared gas heaters:

• the possibility of heating open areas and territories - other heating equipment is focused exclusively on internal use;
• high efficiency - infrared heaters are able to quickly warm up rooms that are large enough in area and volume;
• autonomous operation - the vast majority of devices do not require connection to the electrical network.

There are also some disadvantages:

• devices with this principle of operation burn oxygen - when used indoors, good ventilation is required (at least open vents);
• low fire safety - despite the maximum security, infrared gas heaters can cause a fire.

The combination of advantages and disadvantages is really interesting, and here there is a clear preponderance towards advantages. Therefore, infrared gas heaters have become an excellent heating equipment for indoor and outdoor use.

Some devices can warm not only due to thermal radiation, but also due to convection of hot air - the dual scheme of operation allows you to count on rapid heating.

Are you planning to buy a gas heater, but can't decide on the model? For heating open areas, we recommend purchasing a device in the form of a tall lamp - it will create a circular heating zone and allow you to quickly heat a terrace, veranda, area near the swimming pool or an open playground. Any floor model is suitable for heating utility rooms.

Gas convectors have a good design and can replace standard heating radiators.

As for space heating, in this case it is advisable to use catalytic models - they provide a safer generation of heat from gas for others... If there is a need and opportunity, you should take a closer look at stationary gas convectors. They are highly efficient and can heat large rooms.

The disadvantage of gas convectors is that they require a chimney for their operation - for example, a coaxial one, used in conjunction with heating boilers with a closed combustion chamber.

Where to find the best prices and buy a gas heater with the maximum benefit for your wallet? Try to look at Yandex.Market. Here you can find the most suitable model and filter the list of offers at the lowest price. Decent prices can be found in many chain stores outside the heating season.

Video