With technological progress, mankind began to use an increasing number of heating equipment, where not only firewood, but also gas, electricity, coal, etc. are used as fuel. Thanks to this, it became possible to heat large rooms with different purposes. However, despite the wide variety of systems, air heating has not lost its relevance; this system has been in operation for over 2,000 years.
The principle of operation of air heating
Throughout the entire existence of the air method of heating rooms, two effective approaches were invented:
- Heat transfer that is involved in air heaters. The principle of operation is similar to the operation of water heating, only hot water is not used as a heat carrier. Heated air ducts will begin to generate heat to heat the rooms.
- The direct heating method is used in systems with heat generators. Outside air warms up in the combustion chambers and tends to enter the premises through the air channels. This method allows you to achieve maximum performance coefficient of performance (COP).
The most common way to date is due to the versatility of use. This heating system can be combined with air conditioning and ventilation systems. In addition, with a reasonable implementation of the project, it will be possible to regulate the local temperature regime by using local air heaters in each room. According to this principle, heating systems are divided into local and central.
Advantages and disadvantages
Before giving preference to a particular heating system, you need to carefully familiarize yourself with its features, advantages and disadvantages.
The main advantages of the air system include:
- Due to the fact that air is the most controlled coolant, it is possible to regulate the temperature in rooms with high accuracy.
- The air conditioning system is universal in its use, since in winter it works to heat the room, and in summer to cool it. Also, this approach allows you to significantly save space in the room, since one installation is enough.
- There is no need to install air heating near the windows.
- Lack of classic heating appliances (batteries, radiators). The space looks more aesthetically pleasing, it becomes possible to implement a large number of different design solutions.
Despite the large number of advantageous features, you can not forget about the shortcomings. Unfortunately, there are a lot of them.
- If the system requires continuous operation of the energy resource in the form of gas, monthly utility costs will be high.
- Bad inertia. The air heating system, in comparison with alternative heating methods, is the most non-inertia. This indicates that when you turn on the system, a person feels the heat generated by him, but if you turn it off, the room will quickly begin to cool. This is one of the main disadvantages of the system.
- To heat the room requires a large amount of air, therefore, you need to take care of installing wide ducts with a large cross section. Mostly they are hidden in the ceiling space, which often prevents the design of an interesting design.
When heating the room with air, it is not possible to maintain comfortable microclimate parameters.All radiators warm the air, and it rises, and the air conditioning systems are installed at a height. Thus, the upper part of the rooms is warmed up, and the floors and the lower part are cold.
Calculation of an air heating system
Making all the calculations yourself is not an easy task. In order to take into account all the nuances and not have to redo the project in the future, it is better to entrust this work to professionals. When calculating the power of air heating, first of all, you need to determine:
- the size of the attenuation of pressure along the entire duct;
- heat loss in every room;
- duct pipe dimensions;
- rated power determined by the total heat loss and the type of heater used;
- volumes of air required for high-quality heating of the living space.
If you have difficulty in choosing equipment, you will also need to consult a specialist. He will talk about the features, advantages and disadvantages of each modification and determine the feasibility of a choice in a particular case.
When implementing the project, it is important to take into account a large number of building codes and rules, non-compliance with which can disable equipment and create problems with state regulatory authorities.
Do-it-yourself air heating of a private house
When implementing the project, it is extremely important to consider the optimal type of fuel that the system will use to heat the air. Increasingly, the world's leading manufacturers produce hybrids - systems that run on different types of fuel. The most common example is the switch from natural gas to liquefied fuels. For implementation, it is necessary to change the nozzle supplying the raw material and the burner.
If the choice has fallen on the equipment working on liquid fuel, it is necessary to take care of acquisition of the tank for its storage. The air heating system, combined with ventilation, must be equipped with special filters and air vents. The assortment is large, they can be square, rectangular, round and combined.
The implementation of an air heating system is an excellent solution for apartments and country houses with a small area. However, it will be possible to achieve high efficiency only with competent design, the selection of equipment of optimal power, its proper installation and operation.
