private houses heating systems are usually filled with water. In the case where sub-zero weather in the house for a long time without heating costs, it freezes and increases in volume, which leads to the failure of pipes and all equipment. In anticipation of this, the owners of buildings using special nezamerzayki different types of heating systems for private houses. These fluids are effective and easy to use. In this case, they each have their advantages and disadvantages.
Antifreeze for heating systems - what is it?
antifreeze It consists typically of several components:
- water;
- ethylene glycol and / or propylene glycol;
- inhibitor additives which retard corrosion, oxidation, etc.
Such mixtures are clearly different from the usual pure water according to characteristics such as fluidity and thermal conductivity. That is why they require special operating conditions.
Benefits
The use of antifreeze is considered to be the ideal solution for regions with cold climates. In addition, it is perfectly suited for use in homes, where for a while the room is not heated. Freezing liquid has an increased viscosity. The property can be eliminated by adding pure water in proportions resolved. This saves a considerable amount of coolant, and therefore money. In addition, the circulation pump run for much longer, as they will not work at full capacity.
The main advantages:
- there is no need to drain the coolant from the system when it is switched off for a considerable period;
- all components of the heating system are filled with a liquid that prevents direct access of oxygen, and thus the corrosion;
- additional additives inhibit the formation of scale and corrosion;
- the freezing temperature of the coolant is within -30 to -65 - it all depends on the amount of water added;
- heating can be started without any unpleasant surprises in the form of cracked pipes and others.
Important! Nezamerzayku helps extend the life of heating system components.
disadvantages
Despite the positive side, antifreeze has some drawbacks:
- high price;
- heat and thermal conductivity lower than that of water, as a result - reduced heat transfer and rapid cooling system;
- increased viscosity, which directly affects the operation of the boiler and increases energy expenditure spent on pumps;
- some of the components, which are part of, a person acting as a poison, so it is especially important safety equipment and systems for leaks;
- It can only be used with special boilers and in all kinds of systems.
Important! Before using antifreeze is checked at the beginning of the expansion tank. Often, this component of the system is necessary to change to a larger, since the expansion of the antifreeze settings higher than the water.
use Features
Fill the new coolant only after completely removed the old one. In addition, it is important to check all seams for integrity. changing worn parts if necessary.
The mixture was diluted with water, and immediately poured into the system, the concentration remained at the desired level.
Before you run the heating system it is necessary to take into account several key factors:
- Circulate more viscous antifreeze to provide difficult. Therefore, we must change the old pre-pump or change the operating parameters, to create sufficient pressure.
- The liquid has a reduced heat capacity. To get the estimated heat transfer from the radiator, it is necessary to increase the temperature of the coolant.
- The boiler must operate with a supply of power is not less than 20%.
- You need to replace all the details, which is composed of zinc.
- The first launch is carried out to the minimum, with a gradual increase in rates.
- It can only be used in closed systems due to the presence of toxic substances.
Boilers for optimal on nezamerzayku considered gas. If we talk about power, there is a risk of the heater overheating.
Important! Use antifreeze all the rules must be fully respected. Otherwise, it may result in damage to the main components of the system, clogging of filters and even the poisoning of the body.
How to calculate the right amount?
To purchase the required amount of antifreeze is necessary to know the exact capacity of the system. This information may have specialists who created the design or the installation. If data is lost, to find out the parameters is still possible, though you need to spend some time.
First we need to measure the total length of highways and distribute them according to the diameter. Thereafter it considered opening area. All of this is multiplied by the total length. Added volume of water in the radiator (details can be found in the relevant technical documentation). Obtain the necessary total amount of coolant.
The right amount of nezamerzayki will be available at the time of purchase. The ratio with which to dilute the antifreeze with water indicated on the packaging.
Using antifreeze in the heating system Home allows you to forget about the danger of the coolant freezing and future repairs. The use of antifreeze has its own advantages and disadvantages that must be considered when selecting and operating instructions manual in the process.