It is rare to see a boiler in homes that does not run on natural gas or solid fuel. Basically, it is gas or coal-fired appliances that are more often installed for space heating. Liquid fuel boilers, despite the fact that these are modern units with very good quality characteristics and high efficiency rates, for some reason are not in great demand in our country. What absolutely cannot be said about our neighbors living in the countries of Western Europe. They definitely know how to appreciate and save natural resources. And that is why such liquid fuel heating boilers are much more common in them. Let's try to understand in detail the principle of the device of such heating units and consider their qualitative characteristics and types of liquid fuel.. Expensive but most commonand the quality type of fuel is diesel fuel.
This type of combustible raw material, unfortunately, cannot boast of a low cost compared to, say, gas or electricity. But the products of processing fuel oil or petroleum fuel for furnaces are already an order of magnitude lower than diesel fuel. True, their heating coefficient is also less, by about 15-20 percent. Diesel fuel does not require a particularly thorough filtration process, but fuel oils must still be very carefully driven through cleaning filters.
Fuel types
Fuel for boilers can be biological. If you mix diesel fuel or petroleum oil with combustible vegetable raw materials, you can get a wonderful kind of fuel - biofuel. Vegetable raw materials are slightly similar in characteristics to types of petroleum fuels, but cost a little less.
This type of heating fuel can be found in organizations or private homes located in close proximity to service stations or near auto enterprises. And also to the territories where the equipment for agriculture is located. In such places of used oil, at least “eat with a spoon”. And therefore, economical owners use used motor lubricant and use it effectively to heat their premises.
Let's consider the principle of operation of the device responsible for the exchange processes of heat in liquid fuel heating boilers. The combustion of liquid raw materials and the heating of the coolant in the heating equipment takes place indevice called a heat exchanger. The principle of operation of the heat exchanger is designed so that it can effectively absorb a large amount of heat energy during operation.
Today, you can also find boilers such as condensing liquid fuel units with another zone for additional exchange of thermal energy, which allows you to process heat from exhaust gases, turning evaporation harmful to nature into an additional heat source.
According to the type of material, heat exchangers are made of cast iron or steel. Cast iron, with careful handling, will last more than half a century, but are too heavy. But steel ones weigh less, but their characteristics and service life are also worse than those of cast-iron heat exchangers.
The principle of the burner
Burners in such boilers are equipped with additional pumps and fans, built-in type. The pump pumps fuel from the tank and atomizes it under pressure in the heat exchanger chamber. The fan is responsible for supplying the air flow in the amount required for the correct and efficient operation of the apparatus on liquid fuel. Also, the ventilation device is responsible for removing smoke.
Burners in units operating on liquid raw materials are very complex and rather expensive devices. And they are extremely demanding on the quality of the supplied fuel. Fairly simple and not very expensive burner configurations can only operate at maximum power, but more advanced models have up to three power modes. This also leads to an increase in the service life of the device,responsible for combustion, and fuel economy.
Burners in most cases are only capable of operating on light liquid fuels. These include diesel fuel, motor oil, and biological fuels. But manufacturers have gone much further, and more modern devices are already capable of processing thicker and less efficient liquid fuels. To do this, before being fed into the combustion device, the fuel raw material must be slightly warmed up.
Control automation in boilers running on liquid fuel
Automatics are responsible for the coordinated operation of the burner and the heating system. This allows you to use fuel efficiently and economically, as well as to cope well with heating functions. And at the same time, in fact, they are not inferior to common types of boilers running on gas or solid fuel. Many thermal units can operate autonomously in heating systems called "smart home" only if high-quality liquid fuel raw materials are available. Switching on and off automation in such boilers is carried out remotely.
Liquid fuel boilers and their varieties
There are two types of such aggregates. Single-circuit and double-circuit. Heating equipment with one circuit performs the function of heating only the heating system. And double-circuit models of boilers heat both fuel and running water passing through the heat exchanger. But experts often do not advise choosing units that have more than one circuit. They advise installing a separate boiler and storage water heater. A little more expensivethe installation of separate equipment will cost, but this will undoubtedly justify itself during further operation.
Universal
Heaters can be combined. They are called "universal combined boilers".
Such boilers are capable of operating on all existing types of fuel raw materials. Moreover, the transition from one type to another can be made immediately, as soon as the raw materials used are over.
Classification of universal heating units
Combined boilers come in four modifications according to the type of raw materials used.
- They can combine, for example, gas and liquid raw materials.
- Three types can be used: liquid, solid and gaseous fuels.
- Models of heating equipment have proven themselves well, allowing you to work on natural gas, electricity and various types of liquid raw materials.
- Well, the most unique units work on all four types of substances capable of producing heat.
Liquid fuel boilers: prices (on what they depend)
As you know, the price is determined by the quality. As we already mentioned, models of heating units with cast iron heat exchangers will last longer and cost more compared to boilers made of steel.
When choosing a unit, pay attention to the cost indicated on the boiler. The price for them will directly depend on the needs of the consumer. It must be taken into account that fromthe cost of the brand will depend on the efficiency of the device and the amount of fuel required by it.
Conclusion
Enough has been said about the quality of heating devices. It remains to summarize. In areas where natural gas does not pass, an indispensable option will be a heating device that runs on liquid fuels.
Such boilers, the price of which is from 15 to 30 thousand rubles on average, will justify heating a house where the heating principle is electric or solid fuel. Permission to install and use such units on liquid fuel is not required. And fuel consumption will only depend on the heating area, the efficiency of the heating device and the brand chosen by the consumer.
So, we found out what the price of boilers is and what they are.
