Gas heater for indirect air heating. Industrial heaters and heaters. Choosing the right model
GAS AIR HEATERS
PKA-N
GAS AIR HEATERS
PKA, PKE, AH systems
Popular Models
Sonniger is a manufacturer of fan heaters, air curtains, ventilation systems and supplier to the domestic market. Products manufactured by our engineers have passed quality control by European experts and fully comply with Russian safety and quality standards. They are useful and efficient devices that will reliably protect the building from the cold and provide fresh air to any facility, both industrial and commercial.
Floor gas air heaters RK
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Floor standing gas heaters PKare used for heating and ventilation of rooms for various purposes. Air heaters PK are produced in versions with condensing effect (K series) and without condensing effect (N series); in addition, they can be designed for installation inside a heated room (RKA) assembled with a heat exchanger, ventilation unit and electrical panel for installation indoors or in a protected place, as well as for outdoor installation (RKE) assembled with a heat exchanger, ventilation unit, electrical panel and a burner compartment, being designed for outdoor installation. PK Benefits:
Static pressure options:
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Burners for gas air handling units To complete gas air heaters, burners operating on:
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dimensions
- PKE-N
Additional features
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1.Anti-vibration connection 2.P fire damper 3.Regulating damper for air intake 4.Damper connection kit 5.Servo motor for damper 6.Manually th damper actuator 7.Filter block 8.R e guiding device for two-stage th burners 9.Inverter for capacity/air pressure adjustment 10.Burner 11.Rain grille 12.Mixing block 13.Channel transition 14.Channel Elbow 15.Air Distribution Plenum 16.T temperature probe for duct 17.Flow control damper 18.Three way connection 90 °
for 19.Condensate collection pipe 20.Elbow 90° for chimney 21.Smoke intake module 22.Straight th chimney long th 1m 23.Chimney terminal (umbrella) 24.Anchor bolt kit for 25.Chimney clamp 26.Temperature probe in 27.Flow control damper |
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Air handling units with gas heating Air from Sonniger
Air heaters find wide application in Moscow at modern enterprises and warehouse facilities. These are very efficient devices that can provide heat even to the largest areas. In addition, such equipment can be used not only for the purpose of heating, but also for ventilation of rooms and the removal of harmful and corrosive gases and fumes.
In my own way appearance these devices are thermally insulated panels made of 2 sheets (internal and external) of stainless steel with thermal insulation inside, a functional heat exchanger made of stainless steel AISI 430, AISI 441, as well as a ventilation section with NICOTRA/GEBHARDT driving fans, the main task of which is to suck in air for further processing and supply inside the premises. Initially, it may seem that gas supply units are complex devices, but this is not so, since every consumer will be able to use such equipment. Having ordered such heat generators, you will no longer have to return to the issue of providing your facility with comfortable working conditions, since these installations will perfectly cope with the mission assigned to them.
Order gas heat generators in Moscow
By contacting Sonniger, a company with rich practical experience in this field, the customer will be able to obtain a complete amount of information regarding the operational characteristics of such equipment, its functionality, scope, etc. The staff of our company is represented by recognized specialists whose qualifications will leave you no doubt about the competence and professionalism of our company, and the quality of gas supply units provided by us will exceed even the highest expectations.
The process of operation of this heating equipment is as follows. With the help of ventilation sections, fresh air enters the heat generator, where it is heated to set temperature passing through the combustion chamber and heat exchanger. After that, it is fed into the room. gas heater air is equipped with a chimney through which the products of combustion are discharged into the atmosphere.
We are always ready to offer customers a reasonable price level and consistently high quality. Therefore, you should not waste time looking for cheaper and less efficient devices, the operational life of which is not very long. Having ordered a gas heat generator from us, you will forget about the issue of heating your facility for a very long period, enjoying comfortable conditions for productive work.
Administrative, industrial, economic and many other premises. These include water heating batteries, various convectors, heat guns, infrared heaters and much more. A gas heater is another modern heating device that is optimally suited for heating any type of premises and even outdoor areas.
In this review, we will look at:
- main types of gas heaters;
- principles of operation of devices;
- advice on the selection and purchase of 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 that differ in the principle of operation and power. All these devices have one thing in common - they run on liquefied or natural gas, converting it into thermal energy. Gas cylinders or a gas pipeline can act as a gas source. Heating devices themselves are divided into stationary and portable.
Heat guns heat the room by burning gas. They are quite economical, like all gas-powered appliances.
Stationary gas heaters are convectors or heat guns powered by mains or bottled gas. They are mounted permanently in the premises and are used as the main sources of heat. These devices are different large sizes and high performance, and their operation requires a chimney to remove combustion products.
Mobile (portable) models are designed for temporary or semi-permanent operation. They are small in size and less productive. Most often, such models are made in small-sized cases for outdoor installation. They are optimal for heating 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 - burners with metal and ceramic emitters are located inside them. When heated, they begin to emit infrared waves (thermal radiation). At the same time, the air near the heaters remains practically cold - only surrounding objects are heated. Depending on the power, they can warm quite large rooms and open areas.
In the combustion chamber of the catalytic device, combustion as such does not take place, a chemical reaction takes place there.
Catalytic gas heaters are built on the principle of natural or liquefied gas oxidation. There is no flame here, and heat generation is provided by a chemical reaction. The gas enters a special catalytic panel, where it begins to oxidize, contributing to the generation of heat. Heating is carried out according to the convection, infrared or mixed principle of operation.
Convection gas heaters are extremely simple device- they are based on conventional burners in which fuel is burned. Air heating is carried out with the help of special ribbed radiators. Due to convection, the heated air rises, after which colder air masses enter its place. Two to three hours after the launch of such devices in heated rooms, it becomes noticeably warmer..
Infrared gas heaters can create heat not only by burning gas, but also by catalytic oxidation. Some models of such devices create flows of thermal radiation and provide convection - thereby achieving quick 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 principle of action and scope of use. Let's look at some models from some categories in more detail.
As we have already said, catalytic devices warm rooms 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?
- Extreme compactness - catalytic gas heaters have minimal dimensions.
- No products of combustion - heaters do not burn oxygen and do not emit combustion products, which include carbon monoxide and carbon dioxide.
- Autonomous operation - 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 enclosed spaces is not allowed - good ventilation must be ensured.
Catalytic heaters are very efficient heat generators. It is transmitted to heated rooms in two ways - by convection or by infrared radiation. Some models use double scheme heating. To improve performance and warm-up speed, some models are equipped with fans that provide fast and even heat distribution.
Infrared gas heaters
If catalytic gas heaters are used primarily for space heating, then infrared devices with burners can also warm open areas - playgrounds near swimming pools, sports and playgrounds, country verandas, as well as open terraces restaurants and cafes. The principle of operation of such devices is to generate infrared (thermal) radiation due to gas combustion and heating of the radiating elements. The radiation does not heat the air, but the surrounding objects, which allows you to gently warm the premises and open areas.
Infrared radiation is generated by ceramic and metal heating elements, and built-in reflectors are used to create a directional zone. Thanks to this design, infrared heaters have a decent range - for example, outdoor models can warm objects within a radius of up to 5-6 meters. And this figure is very attractive.
Natural or liquefied gas acts as fuel for infrared heaters. Most often, consumers use 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 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 do not heat 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 heat up a fairly large area and volume of the room;
- 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 windows);
- 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 advantage in the direction of pluses. Therefore, infrared gas heaters have become an excellent heating equipment for indoors and outdoors.
Some devices can warm not only due to thermal radiation, but also due to convection of hot air - the dual operation scheme allows you to count on quick warm-up.
Are you planning to buy a gas heater, but you can't decide on a model? To heat outdoor 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 around a swimming pool or an outdoor playground. For heating utility rooms, any floor model is suitable.
Gas convectors have a good design and can replace standard heating radiators.
As for space heating, in this case it is desirable to use catalytic models - they provide a safer generation of heat from gas. If there is a need and opportunity, you should look at stationary gas convectors. They have high performance and can heat large areas.
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 closed combustion chamber.
Where to find the best prices and buy a gas heater with the maximum benefit for your wallet? Try looking at "Yandex.Market". Here you can find the most suitable model according to its characteristics and filter the list of offers at the lowest price. Good prices can be found in many chain stores outside the heating season.
Video
Specifications:
Note: Power density is the amount of power allowed over the surface area of the heater.
Frame:
Material execution:
Introductory drawing:
Position 2. Control panel type terminal box (watertight version)
Control panel components:
- Main disconnect
- thyristor converter
- stepper controller
- control device transformer
- contactors and fuses for - two units 40 kW, 380 V, 3 ph
- thermocouple controller
- upper limit controller
- switch two positions "off. - on."
- signal red light "heater on"
- connection terminals for (thermocouple type J)
Remote installation
Retransmission
Remote on/off
Scope of delivery:
- circulation heater;
- heating elements
- Control Panel
Industrial Electric Bitumen Heater
Circulation heater for heating the bitumen flowing through it in the amount of 47,000 kg/h from a temperature of 192°C to an outlet temperature of 200°C, with a power of 280 kW. Design temperature 200°C at a pressure of 4 kg/cm².
The heater is a 24" carbon steel vessel with 231 Incoloy 800 heating elements, 4" 150# ANSI flanged inlet and outlet.
The termination chamber is NEMA type 4 compliant and designed for outdoor use in a non-hazardous area.
Specifications
flanges
2" Insulation with Sealed SS304 Jacket
The heater package also includes:
Control panel
NEMA 4X steel housing
Enclosure dimensions (H x W x D) 1524 mm x 914 mm x 305 mm (60" x 36" x 12")
Jacket heater for negative temperature environment
Panel mounted window for weather protection
Power supply 380V/3ph
Self-tuning PID temperature controller (controlled temperature technological process, with standard thermocouple input type J)
Control power transformer 120 VAC with fuse on the primary and secondary side of the transformer
Main power switch
7 pcs. isolating modulating contactor(s) for resistive loads
7 pcs. 3-phase power regulator(s) with zero crossing
7 pcs. fuse kits 80A.
Selector switch - ON/OFF with built-in indicator lamp (green)
to indicate "POWER ON"
Terminals for customer-supplied remote locking device
Rated short-circuit current 5 KA
Specifications
flanges
Heater power supply
The heater package also includes:
- One thermocouple for process temperature control.
- One thermocouple to protect the heater from high temperature limit.
Remote control panel
For installation outside the hazardous area
Proportional-integral-differential temperature controller with digital display
304 Stainless Steel NEMA 4X Termination Chamber, Size TBD
Power output and all sensor connections to the bottom of the panel
Heater housing for ambient temperature -29°С
All controls are located under the glass protecting from the cold
(22) SCR controls
Opening the door
(1) Sheath overheating protection
(2) Red illuminated reset button (RED) for visual indication of "OVERTEMP"
Green Illuminated Switch (GREEN) for "POWER ON" indication
Components included in the nomenclature of the Safety Laboratory, the entire panel is not
included in the nomenclature of the Safety Laboratory.
A list of materials and spare parts for replacement is provided after approval.
Standard control panel
Easy to maintain and operate
All operating parameters of the control cabinet are checked at the factory and on site with a wiring diagram.
The panel cover contains the following information:
Block control;
Primary burner;
Secondary burner stage;
blocking;
Pump control;
Pump blocking;
Excess temperatures;
Overpressure
Optional equipment
Hot mix heat exchanger
The thermomechanical load range of the plate is from 0.5 to 1.5 m and the "long" thermal circuit will cover a large load volume, up to 70 m 3 /h in the case of a single-phase solution - this means that all connections will be at the head. This will ensure that service and pipe work can be carried out easily and, in the event of dismantling the heat exchanger, there will be no need to dismantle the pipes. Heat transfer becomes possible when the warm medium transfers energy through the thin, high efficiency plates between the channels and delivers it to the cold antagonistic medium without mixing. Counterflow creates optimum efficiency. The plates, as well as the inlet structure, allow for easy and efficient CIP cleaning (washing) of all flow surfaces.
Corrugated herringbone surface provides turbulent flow of the total effective area. In addition, this surface allows "metal" contact between the plates, and together with the locking device on the seal, the plate pack is easy to mount. The plate pack is safely located between the movable and fixed frame supports.
| Technical specifications: | hot side | cold side |
|---|---|---|
| Productivity, m³/h | 102,99 | 108,24 |
| Inlet temperature, °C | 95,00 | 45,00 |
| Outlet temperature, °C | 79,00 | 60,00 |
| Pressure drop, bar | 0,89 | 0,95 |
| Heat transfer, kW | 1860 | |
| Thermodynamic characteristics | Water | Water |
| Density, kg/m³ | 967,26 | 987,00 |
| Specific heat capacity, kJ/kg*K | 4,20 | 4,18 |
| Specific thermal conductivity, W/m*K | 0,67 | 0,64 |
| Average viscosity, mPa*s | 0,34 | 0,54 |
| Boundary viscosity, mPa*s | 0,54 | 0,34 |
| Pollution factor, m²*K/kW | 0,0108 | 0,0108 |
| Size factor, % | 21,5 | |
| Inlet pipe | F1 | F3 |
| Outlet pipe | F4 | F2 |
| Frame/plate construction: | hot side | cold side |
| Number of plates | 66 | |
| Effective heating surface (m²) | 6,57 | |
| The total value of thermal conductivity is dirty. / clean (W/m²*K) | 8203 / 9966 | |
| Insert material | 0.5 mm AISI 316 | |
| Seal material / Max. temperature, °C | Nitrile / 140 | |
| Maximum design temperature, °C | 100 | |
| Maximum working / design pressure, bar | 10 / 13 | |
| Maximum differential pressure, bar | 10 | |
| frame type | IG No. 2 | |
| Hot side connections (F1-F4) | Flange DN 65, PN 10 / PN 16 | |
| Connections on cold side(F3-F2) | Flange DN 65, PN 10 / PN 16 | |
| Liquid volume, l | 19 | |
| Frame length, mm | 538, Max number of plates 77 | |
| Net weight, kg | 164 | |
PLC control panel
Control panel with PLC, with 7” Siemens touch screen. Controls all operations of the heater and its accessories. With MODBUS TCP/IP communication protocol, communication the local network Ethernet with main point of control at the factory.
Non-explosion proof pump
transmitter for inlet pressure.
outlet pressure transmitter (minimum flow control).
two manometers Ø 100, 0-10 kg/cm2
bypass and safety valve, PN-40, made of carbon steel, inside and AISI-304 stainless steel springs, working at a maximum pressure of 7.5 barg, flange connection DN-25.
three temperature sensors type PT-100
for inlet temperature,
for outlet temperature,
as protection against overheating at the outlet.
temperature sensor, as temperature limiter in flue gases.
four thermal covers for placing sensors.
Burner
Control panel
Coolant circulation equipment group
Heating medium recirculation pump
Connection elements between heater and pump
Two interrupter valves, PN-16, connection with DN-150 flanges.
coarse filter PN-16, connecting flange DN-150.
three valves, PN-16, for filling and draining.
three ball valves, PN-16, connection with ½" thread.
a group of reversible pumps with an electric drive for emptying and filling the installation.
seamless steel pipes in accordance with ASTM A106 Gr. B and accessories for this pipe
Coolant capacity
Volume 3000 l, horizontal cylindrical. Diameter 1200 mm, length 3030 mm. Made from S-235-JR carbon steel.
Level cocks fitted with drain cock and glass tube for visual control of oil level.
Magnetic float switch, stainless steel AISI-316 buoy and flange; The switch body is made of die-cast aluminum. This is done in order to block the burner in the event that the oil drops to a minimum level.
collection tank
Volume 10000 l, diameter 1800 m, length 4270 mm, horizontal cylindrical.
Not included in the scope of delivery:
Chimney
bottle support
thermal insulation stop valves, tanks and pipelines
Installation and launch
Supply of electricity and fuel to the boiler
Everything else not listed above
| A | B | C | D | E | F |
|---|---|---|---|---|---|
| 4750 | 3125 | 2400 | 2335 | 2760 | 1715 |
The control cabinet consists of a section 600x1800x400 mm.
With the placement of the power and control parts.
The control cabinet is equipped with a 160A main switch with overload and short circuit release. Power control from 5...100% by means of a thyristor. Control is possible both via the built-in electronic controller and via PLC (Sollwert 4...20 mA).
Safety devices: built-in thermal fuse (heating elements) and insulation control against earth (heater).
Switchgear manufactured, assembled and tested
in accordance with current DIN technical standards, in accordance with accident prevention regulations and in accordance with VDE directives. Electronic documentation is indicated on the wiring diagram.
Conducting factory acceptance tests
Documentation:
Spigot table
The gas heater is autonomous non-centralized(as opposed to central heating with a boiler) heating system.
In it, the energy released during the combustion of natural gas is used to heat the premises.
Externally, this device looks like casing, with a gas burner installed in it and a heat dissipation panel, which is usually made of ceramics or metal alloys.
The gas cylinder can be built into the body of the device, but it is also possible to connect to the gas line.
Gas heaters for apartment and private houses
Advantages of gas heaters:
- Reliability. These heaters are simple in design, and there is no chance of burnout, as is the case with electric heaters on heating elements.
- High efficiency. Combustion of fuel directly at the place of heating allows reaching values up to 80%.
autonomy, independence from power supply. Many of these devices can operate on both liquefied and natural gas.
Therefore, even if the main gas supply is turned off or it is impossible to connect to it, the device can always be connected to a portable gas cylinder and not be left without heat.
Performance classification
Depending on the version, the following types of gas heaters are distinguished.
Portable balloons
As a rule, they are made in the form of a body with gas equipment and space for fixing the cylinder (there are also models with the connection of the cylinder through a hose). Sizes can vary from miniature for heating tents on hikes up to overall and powerful, for heating large rooms.
Powerful models, due to their size, are equipped with wheels for ease of transportation. On the body of the device there is an ignition button and a combustion intensity regulator.
Portable gas heaters work only on bottled gas.
Exist two types of gas: natural and liquefied(may consist of both natural and various mixtures, for example, propane-butane). First view- is supplied along the highways and used in stationary installations.
Liquefied- gas in liquid state, it has b about higher density and pumped into cylinders, so it is more convenient for portable use. A device designed only for natural gas will not work on liquefied gas.
Heating devices of this type are used in utility rooms, in garages, at industrial facilities for temporary heating of houses, at street events, and are widely used in hiking: in cases where the room small and constant heating is not required.
Due to the specifics of the application, portable gas convectors are equipped with security systems, which stop the operation of the device when the heater overturns, there is no flame or low gas pressure.
Stationary
Heating appliances for fixed installation are usually produced in the form flat panels, because they do not have a place to place the cylinder. Equipped with brackets for mounting on walls and ceilings.
They usually run on natural gas, but some models can use LPG bottles.
Important! Such “omnivorousness” is provided either with change of nozzles(for liquefied gas, the spray hole in them is smaller), or special burners, designed for both types of gas.
Stationary heaters can have both an open combustion chamber and a closed one:
- In heaters with closed In the combustion chamber, oxygen for the gas-air mixture is supplied from the street through a coaxial chimney. The latter is a construct "pipe in a pipe". On the inside - combustion products are removed, and on the outside - air enters. Heaters of this type are an order of magnitude safer than the previous ones, they have more high efficiency and do not affect indoor air quality. But installation coaxial chimney is not always possible.
open- not isolated from the room in which the device is used.
The combustion air for the gas comes from the room itself, so for these devices it is necessary to provide high-quality ventilation premises (otherwise, during use, the air will be depleted of oxygen).
A traditional chimney is used to remove combustion products.
Such devices are often used as an alternative to the system central heating, in places where regular heating is needed for a long time: country houses, apartments.
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Classification by type of heat transfer
According to the type of heat transfer, the following types of heaters are distinguished.
infrared
In traditional systems, heaters first of all heat the air in the room, which is mixed by convection, evenly distributing the temperature.
This method is rather inert, it takes a long time to establish the desired temperature, since the air has poor thermal conductivity.
In addition, warm air does not at all mean warm objects and, for example, beds in country house can stay cold long time even though the room is already hot.
These shortcomings are deprived of infrared heaters. Devices not heat the air, but the objects themselves indoors (furniture, walls, floors) and people in the zone of its action. Objects heated by IR radiation, they themselves become small sources of heat and heat the air, and a person will not be cold immediately from the moment the device is turned on.
Reference! The principle of operation can be compared with the Sun warming the Earth: despite the complete vacuum in space and the great distance, electromagnetic infrared radiation from the sun reaches the Earth and is absorbed by objects, turning into thermal energy, which we feel as “temperature outside the window”.
The mechanism for obtaining infrared radiation is as follows: the gas-air mixture enters the ceramic thermal panel, burns inside, heating it up to 800-900 °C. The panel heated to such temperatures becomes a source of infrared thermal radiation.
Infrared gas heaters are used:
Infrared gas heaters operate on both liquefied and natural gas from the main gas pipeline.
Advantages of gas infrared heaters:
- economy. Due to the heating of only the desired zone of the room and the absence of losses from the heat source to the radiators (as in a central heating system with a boiler), you can save up to 50% energy.
- Optimum space heating. When installing a gas infrared device on the ceiling, it effectively heats the floor and the lower part of the room, which is most comfortable for a person. With convection heating warm air often accumulates under the ceiling, and it is still cold below.
- compactness.
- Fast and directed heating.
- Absence of necessity in the chimney.
- High price compared to gas convectors and electric radiators.
- The need for regular cleaning and calibration, and repairs can cost a pretty penny.
- They burn oxygen in the room, so you need to take care of it ventilation.
Ceramic infrared heater on gas
The radiating element here is a panel of heat-resistant ceramics with many holes. Passing through them, the gas burns out and gives off all the heat to the ceramic panel, which begins to radiate.
Photo 1. Ceramic infrared heater on gas model UK-04, thermal power 3700 W, manufacturer - "Neoclima",
This type of heating devices is also called "light", because due to heating to temperatures of the order 900°C they emit a glow that can create a pleasant atmosphere and harmoniously complement the interior.
Some models are equipped built-in electric fan, which allows you to slightly increase its power, expand the coverage area, accelerate the heating of the room.
Attention! When using such systems for a long time, be sure to provide inflow fresh air into the room.
Moreover, most models of ceramic heaters are equipped with carbon dioxide and oxygen sensors, so if there is not enough oxygen in the room, the automation can simply turn them off.
Advantages:
- power;
- directed action;
- lower price compared to catalytic ones.
Disadvantages:
- a little more low efficiency;
- burning oxygen.
Catalytic IR heater
The name of these devices is due to the catalyzation (acceleration) of the gas combustion process.
They consist of a refractory grid (usually steel or ceramic) that is coated substance-catalyst - platinum and similar.
The gas supplied to the grate does not burn in the usual way, but is flamelessly oxidized by oxygen thanks to the catalytic coating of the thermal panel.
The catalyst contributes to the complete combustion of the fuel, hence high efficiency (up to 80%). The combustion temperature of gas in such heaters below 600 °C, therefore sometimes they are called "dark". Glow during operation is almost absent.
Thermal energy mainly also transmitted by infrared radiation, but in catalytic heaters it is more pronounced convection heat transfer, than in "light" ceramic, where almost all the energy is emitted exclusively in the form of IR.
- higher efficiency by optimizing the combustion process;
- less active oxygen burning(ventilation is recommended, but not as critical as with ceramic heaters);
- compactness and lightness.
Cons: power is limited 2.9 kW(against maximum 5 kW for ceramics).
Convector
Unlike infrared, these devices use traditional way heat transfer through air: convection.
The main element in the convector is a metal chamber, at the bottom of which is installed gas-burner. Burning, the gas heats the entire chamber, which gives off heat to the cold air.
When heated, it rises and provides uniform circulation of heat in the room.
All models are equipped with automatic, which monitors the room temperature and controls the gas supply, as well as safety sensors ( CO 2 , gas leaks).
Convector gas heaters are produced only in a stationary version, since a chimney is required for their operation. The chimney can be traditional type (for appliances with an open combustion chamber), and coaxial(when closed chamber).
Reference! For convectors with open chamber oxygen comes from the room, so they need ventilation. Devices with a camera closed types are devoid of this drawback, the gas combustion process is completely isolated from the premises and takes place, in fact, on the street.
The heat exchanger chamber in convector heaters is made of steel or cast iron. Cast iron is more expensive and heavier, but more durable ( service life up to 50 years), has a significant heat capacity (gives off heat for some time after the burner is turned off), and the efficiency of such devices is higher. Steel chambers are lighter, but their service life is 20 years.
Scope of application - permanent heating of residential and technical premises, country houses.
Advantages of convector type heaters:
- Uniform heating, including large rooms.
- high power (up to 10-12 kW).
- Efficiency up to 92%.
- Autonomy.
- Undemanding to ventilation(for devices with a closed chamber).
Disadvantages:
- The need for construction chimney.
- Slow heating the room.
- For installation gas convector required in the apartment permission from the gas service.
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How to choose the right one for heating your home
Suitable type gas heater depends on the room, the frequency of use and the availability of gas.
As with traditional heating systems, first of all, you need to decide on the heat output of the device.
For typical houses in the middle lane, it is approximately estimated as 1 kW per 10 m 2 of area.
For small spaces (up to 20-25 m 2) a catalytic heater is well suited due to its limited power (up to 2.9 kW) and economy of use.
If your room is larger, then suitable choice there will be an infrared device, because its power is higher, up to 5 kW and can warm rooms up to 50 m2. Given the relative localization of this heater, perhaps more the best option will buy several such devices by placing them in different parts rooms to ensure uniform heating.
Give preference to infrared heaters ( catalytic and ceramic) is only worth it if you do not use heating all the time (for example, you come to the dacha for the weekend).
Attention! Due to the open combustion chamber and interaction with the surrounding air, it is not recommended to use these devices in unventilated rooms with an area of less than 15 m 2.
Otherwise, for continuous heating, use gas convector. This device will allow you to evenly heat large rooms without affecting air quality.
If temporary heating is needed (for example, while the stove is flaring up), then portable heaters on liquefied fuel. In addition, pay attention to which gas the selected device runs on.
With constant heating, natural gas from the network should be preferred in order to save yourself the trouble of refilling cylinders.
For the street, only IR heaters with ceramic thermal panel. They are often issued in the form "thermal umbrellas" or pyramids, for vertical installation.
Portable mini infrared ovens can be used in garages and utility rooms, as well as on camping trips and picnics.
When buying a portable heater, be interested in the presence of protection (from tipping over, gas leaks, excess CO 2), especially if there are small children or animals in the house. Such systems will make the operation of the device absolutely safe.
A device with a built-in balloon: features
When choosing a gas heater with a cylinder, you need to pay attention to some little things.
To work on liquefied gas reducer required, which reduces the pressure of the gas before it enters the burner. Check if it's included.
When placing the cylinder, make sure it is far enough away from the burner to avoid ignition and explosion.
A small overview of popular models
The following models are particularly popular.
Ballu BIGH-55 on propane
Ceramic infrared heater with balloon.