Propylene glycol for heating systems is producedfrom petroleum products, has excellent performance characteristics and can be used as a working fluid. This substance, when freezing from the liquid phase, transforms into a gel-like state, which makes it possible to protect the pipelines from corrosion and rupture.
В нашей стране наиболее распространена водяная a heating system in which the energy is transferred from the source to the heating devices by means of a liquid coolant, which is usually water. It is worth noting that it is the best way to handle the heat transfer function. However, it has the only drawback: when freezing, this coolant expands, crushing radiators from within and damaging the iron and steel systems. Ice plugs that are formed in pipelines with local freezing are less dangerous, but they are also capable of delivering many problems and leading to local overheating or even boiling of the coolant.
This moment explains the high interest.owners of autonomous heating systems and heat engineers to antifreeze, which can replace water, affordable and safe for human health and life. It is not a secret that even in the most reliable system malfunctions and leaks are not excluded.
Among such liquids should be distinguished antifreeze based on propylene glycol for heating systems.
This coolant iscolorless viscous liquid, which is characterized by a sweetish taste and a corresponding odor. And most importantly, it is safe for human health. Propylene glycol is widely used in various sectors of the national economy, including the cosmetic and food industries.
Propylene glycol for heating systems has all the properties of an ideal heat carrier: it boils at a temperature of 187 ° C, and crystallizes at -60 ° C.
Another advantage of propylene glycol is low corrosivity, which makes it possible to lower the bar for quality requirements for steel for heating systems and, accordingly, reduce their cost.
Пропиленгликоль отлично подходит для систем, including structural elements from rubber, polymeric materials, aluminum, copper, cast iron and steel. In addition, when using this substance, scale and precipitation do not form on the inner surface of the heating system, which ensures high heat transfer and increases the operating life.
Propylene glycol has the following properties:
In addition, propylene glycol for heating systems is able to withstand high temperatures.
They have the following propylene glycol:
The first advantage of antifreeze, thanks toto which he received such a name, you should call the property not to freeze at high sub-zero temperatures, which the heat-transfer agent possesses. Propylene glycol for the heating system forms an amorphous structure, this is what distinguishes it from water. This substance does not increase in volume, respectively, the destruction of the heating system as a result of this does not threaten.
Unlike water, propylene glycol for systemsheating has a lower heat capacity. This means that it accumulates less heat and, consequently, less gives it away. As a result, consumers will need more powerful heating devices.
Вязкость антифриза выше в 4 – 5 раз, чем similar to water. For this reason, the circulation rate of propylene glycol in the system will be less. When choosing heat carriers for propylene glycol-based heating systems, these factors must be taken into account.
Before pouring non-freezing liquid into the heating system, it is necessary to carry out hydraulic tests.
Choosing the right antifreeze deserves special attention.attention, it is important to choose one that will fully comply with the heating system. For these purposes, an analysis of its elements is carried out, and the materials of which it is composed are listed. After this is selected antifreeze, which will not contain hazardous materials for the system of additives.
For heating systems, the most popular isnon-freezing liquid with carboxylate additives. As a rule, it is used for at least 5 years. It is also worth noting that the heat carrier propylene glycol for the heating system without effective additives is especially dangerous for copper heat exchangers and may lead to their unsuitability after a year of operation.
In the process of use, the coolant is contaminated; therefore, its quality requires constant monitoring, which is desirable to produce under laboratory conditions.
Antifreeze propylene glycol for heating systems need to be replaced only after hydraulic testing of the system and washing it with an alkaline solution.
To effectively use thisnon-freezing fluid should be poured into the circuit of the heating system after thorough sealing of all components and conducting hydraulic tests. It is recommended to supplement the system itself with a circulation pump.
By changing the percentage of propylene glycol solution for heating systems, you can get a liquid with a freezing point of -1 ° C to -65 ° C.
The lifetime of propylene glycol without additivesthe average is 5 years, then in the ventilation, cooling or heating system, it is necessary to perform either flushing with an alkaline solution, or completely replace the liquid. With prolonged or frequent exposure to low temperatures (for example, the heating system has not been used for a long time in the winter period), it is preferable to change the solution every 3 years.
The heating system needs periodic flushing. For these purposes, various liquids are used. Home washing is usually done with water.
For a good result, the system needs to be filled for about an hour with a solution of caustic soda, which perfectly fights against corrosion and scale.
Another important point is to know whichantifreeze freezing point is required. Only when this condition is met, it is possible to choose the most optimal fluid for heating systems. Propylene glycol has several advantages compared to ordinary water. And the main is the ability to not freeze at low temperatures.
After pouring antifreeze into the heating systemyou can not worry about what will happen "defrosting" of heating devices in a country house. Do not have to go there constantly to check the status of the system.
Various additives give non-freezing liquidbest qualities. As a result, the heating system will last longer. Additives allow you to protect metal surfaces from corrosion, while preventing the destruction of sealing elements.
Today the construction market offersa wide range of coolants, which is based on propylene glycol for heating systems (feedback on them is mostly positive). All of them have different cost, which directly depends on the brand, the country of origin, as well as the operational characteristics of the solution itself.
Some consumers without specialknowledge, use in their heating systems automotive antifreeze (transformer oil, antifreeze, etc.). However, this is unacceptable, since such solutions contain unsafe for human health and flammable substances. The most optimal and versatile in operation is considered to be an antifreeze based on propylene glycol. When choosing a coolant for the heating system, you should pay attention to the following points:
Очень важно использовать антифриз строго по его purpose. Neglecting the choice of non-freezing liquid will lead to negative consequences - emergency situations, hydraulic shocks, pipeline gusts, etc.
