Why does the use of oxygen barrier tubes make the life of the system longer?

PE-RT pipes are better. There are four main categories of pipes that can be used for floor heating systems: PE-X pipes, PE-RT pipes, PPR pipes, and PE pipes. Tube:

It has good low-temperature toughness, high temperature resistance, good stress crack resistance, no thermoplastic performance, and cannot be connected and repaired by hot melt welding, and can only be mechanically connected by metal pipe fittings, which is prone to water leakage after long-term use. Pipe: retains the advantages of PEX pipe, the pipe can be connected by hot melt, the joint is reliable, not easy to leak, the flexibility and low temperature resistance are very good, and the material is moderate, cost-effective, is the general pipe used in the current floor heating.

Tube: It has the characteristics of high pressure resistance, good high temperature and low temperature resistance, good impact resistance, easy to bend but not **, and is the softest among several types of floor heating pipes. The raw material ** is the highest, more than double that of other varieties, and it is currently less used in China.

Pipe: good high temperature resistance, good mechanical properties and superior connection performance, non-toxic, hygienic, is the ideal pipe for domestic hot water and radiator system pipes, but due to its poor low temperature impact resistance, it is less used in floor heating pipes. Although these four types of pipes have their own advantages, the most suitable for floor heating is PE-RT pipes.

It has superior toughness, stress crack resistance, low temperature impact resistance, outstanding long-term water pressure resistance and good thermal creep resistance. PE-RT floor heating pipe is currently the only plastic pipe that does not need to be cross-linked and can have long-term hydrostatic performance below 60 degrees Celsius. More importantly, the pipe can also be repaired with hot melt connection of pipe fittings when it suffers external damage, and there is no joint at the joint, which can greatly improve the quality of the connection and reduce the occurrence of quality accidents, generally speaking, the service life of PE-RT floor heating pipe can reach 50 years.

There is a difference between the heating main and the floor heating pipe, and the pipe material used in developed countries in Europe is mainly PEX for heating, and PE-RT is mainly for floor heating pipes.

Because the oxygen barrier pipe can be anti-corrosion and anti-rust, it will block oxygen from penetrating deep into the pipeline system. Cosmann's oxygen barrier tube is an oxygen barrier tube imported from Germany, and the oxygen barrier is done well.

You may be using a Japanese car made in China, that is, it is manufactured in China. Real Japanese cars are much more durable than German cars, and Japanese cars have fewer problems and can last for 20 years under normal maintenance and use. Japanese cars require energy saving, while German cars require safety and don't care about cost, normally German cars are durable, that's because the cost is there, and the cost of German cars and Japanese cars is much higher than that of Japanese cars.

In the automotive industry, both Germany and Japan have made great contributions and have produced outstanding models.

At the moment, the Germans are very good in some areas, such as racing, including F1 and touring car racing, and the Germans are better than the Japanese. For example, Japan's Toyota has invested a lot of energy to play Le Mans and F1 in the past ten years, but it still can't play with European manufacturers (including BMW, Audi and so on in Germany).

But in some areas, such as electric and hybrid vehicles, the Japanese are currently ahead of the Germans. I know a story: Daimler AG once wanted to buy or exchange hybrid technology with Toyota of Japan, but Toyota refused after the Germans made an offer, and the response was "you underestimate the technical content of hybrids".

Specific to the technical field of certain components, such as gearboxes, some people will say that the specifications and technology of German brands are higher than those of Japanese brands. In fact, most manufacturers' gearboxes are developed in cooperation with manufacturers, and there are world-renowned gearbox manufacturers in Germany and Japan. Germany has an advantage in multi-gear automatic transmissions for high-end cars, and ZF (ZEF) is a well-known brand; Japanese manufacturers, on the other hand, have a relatively high level of attainment in economical automatic transmissions for small cars, represented by AISIN.

In terms of new type of transmission technology, Japanese manufacturers are more active and extensive in the application of CVT, while German manufacturers are lagging behind in this regard.

In recent years, German car manufacturers have tried their best to use dual-clutch transmissions, which are ahead of Japanese car manufacturers (Japanese performance cars also use dual-clutch transmissions, in fact, suppliers are BorgWarner, Getrag and other European and American companies). Turbocharging technology is popular nowadays, and at present, the pace of German brands is ahead of Japanese brands in this field.

1. In fact, this is the same as at the beginning.

The concept of production is related, when they produce or design German cars, they put quality and performance back in the first place, and the answer is that although fuel consumption or something is also considered, it takes a back seat. Japanese cars, on the other hand, are more concerned about the appearance of fuel consumption and the reduction of various costs. Of course, it refers to cars of the same or similar price range.

Since this starting point is different, the materials used are different.

2. European and American cars are thick and heavy, while Japanese cars are light and thin. Painting is an important means to prevent oxidation. And there is also a difference in the material of the steel plate, with the current technology, it must be thin and good, and the basic ordinary people can't bear the ......The car is also a machine, and it will also wear out, and in terms of materials, Japanese cars are not as good as European and American cars, so the life span is relatively short.

Japanese cars require energy saving, while German cars require safety and don't care about cost, normally German cars are durable, that's because the cost is there, and the cost of German cars and Japanese cars is much higher than that of Japanese cars.

What is an oxygen barrier tube?

Oxygen barrier tubes, as the name suggests, are designed to prevent oxygen molecules from passing through the plastic pipe layer, thereby avoiding rapid corrosion of metal parts in the equipment.

Oxygen-blocking floor heating pipe is a kind of floor heating pipe, in order to make the floor heating system not leaking, not corrosive, no scaling, high thermal efficiency, in addition to reasonable design, scientific construction, but also to choose a reasonable pipeline system to prevent oxygen from penetrating into the water of the heating system, because oxygen is the source of corrosion.

What are the characteristics of oxygen barrier tubes?

Oxygen barrier, prolong the service life of the system, EVOH blocks oxygen from penetrating into the water or air in the pipe, and greatly extends the service life of metal valves, switches, boilers, water collectors and other metal parts in the entire pipeline system.

Hygiene, because it prevents the infiltration of oxygen, which is necessary for the survival of microorganisms, thus inhibiting the presence of microorganisms in the system.

The oxygen barrier pipe also has the advantages of corrosion resistance, no scaling, small heat loss, energy saving and environmental protection, flexibility and bending, good hydrodynamic properties and long life of other high-temperature resistant floor heating pipes.

The pipe has good toughness, large bending radius, small construction strength, and is convenient for construction.

The pipe has good oxygen resistance, which can effectively delay the corrosion of metal parts in the system, prolong the service life of metal parts, and reduce the fouling of the pipe system. It is mainly used in various heating systems.

The installation and use of floor heating pipes need metal components to match, such as metal structures such as switch valves, and these metal parts are easy to be corroded during the hot water circulation process of plastic pipes, which will not be conducive to the long-term use of floor heating systems. However, the floor heating system is intended to be used for a long time, and its parts are difficult to replace, which causes the inconvenience of the heating system. Why does hot water circulation in plastic pipes speed up corrosion of metal parts?

After the investigation and research of foreign experts, it was concluded that it is because the oxygen is more likely to penetrate the plastic pipe into the hot water after the pipe is heated, which leads to the corrosion of metal parts. The infiltration of oxygen is a slow effect, but the corrosion of the parts is really obvious, and at the same time, there are inconvenient maintenance and replacement parts limited by the underfloor heating pipe system, so the impact is not as simple as imagined.

Heating plastic pipes have high reliability, corrosion resistance and high temperature resistance, other materials are difficult to replace, and even if they can be replaced, they may not have a corrosive effect on metal, so the key problem is how to solve oxygen penetration. After research and experiments, foreign experts have found that an oxygen-blocking plastic pipe can effectively solve this problem. As the name suggests, oxygen-blocking floor heating pipes have a good effect on blocking oxygen penetration, which will greatly reduce the corrosion rate of metal parts.

As a result, the average lifespan of a floor heating system can often be extended, usually more than 10 years.

In the mainstream countries of Europe and the United States, it is mandatory to use oxygen barrier pipes in the floor heating system, in order to have a longer life and make the whole system run longer. If you want to use PE-RT cheaply, if you want to withstand high temperatures and have a long service life, you can use PE-X, domestic Rapolly, imported Barick, Ac-fix, Rehau, and Tece.

1. Accelerated system aging: Usually the aging of the system is due to the combined action of light, heat, oxygen, fatigue, etc. When oxygen enters the heating system through the floor heating pipes, there is a large amount of oxygen in the hot water flowing through the heating pipes, which may corrode the metal parts such as wall-hung boiler valves and heat exchangers, accelerate the aging of the system, and shorten the service life.

If an oxygen-blocking tube is used, the service life of the metal will be increased by 10-20 years without the action of oxygen.

2. When the hot water temperature is higher than 40, the thermal and oxidative aging of the heating pipe will be accelerated due to the penetration of oxygen into the heating plastic pipe body at high temperature. In Europe, oxygen-blocking floor heating pipes are widely used in hot water systems.

1: In the heating system, the oxygen in the water will seriously corrode the metal surface for heat exchange, reducing the life of the system, and the boiler and radiator in the heating system will be its main corrosion object. Because the oxygen content in the water is related to the water temperature, the oxygen content is low when the temperature is high, and the oxygen content is high when the temperature is low - that is, the oxygen dissolved in the water will be absorbed or separated due to temperature changes, so the oxygen will enter the water in the pipe through the surface of the pipe, and be released in the high-temperature heat exchange surface such as household boilers, water separators and heat sinks, and cause chemical reaction with metal, causing corrosion.

2: For the floor heating system, the pipe heat exchange area is large, and the oxygen seepage situation is more serious. But the permeability of general floor heating polyethylene pipe is rising, in line with the German industrial standard DIN 4276 standard, so the oxygen barrier layer of floor heating pipeline, the significance of oxygen resistance is not much, but this oxygen barrier protective coating, can greatly improve the anti-friction ability of floor heating pipeline, increase the life of pipeline.

For owners who are looking for high quality, they should consider opting.

3: Oxygen-resistant floor heating pipe is formed by three-layer co-extrusion and five-layer co-extrusion, generally five-layer co-extrusion oxygen-blocking pipe is better and more reliable than three-layer co-extrusion pipe, because the five-layer co-extrusion oxygen-blocking pipe is only the outermost layer of plastic connection at the connection between the pipe and the pipe fittings, which ensures the safety of the connection, so people will choose five-layer co-extrusion pipe for oxygen-resistant floor heating pipes.

The floor heating oxygen resistance pipe can block oxygen from penetrating into the pipeline system, so as to prevent the metal part in the heating system from corroding and rusting, and greatly extend the service life of metal valves, switches, boilers, water collectors and other metal parts in the entire heating system. If the oxygen barrier pipe is used in tap water, even if the water does not flow for a long time, it will not deteriorate due to oxidation, and bacteria that survive on oxygen will not be able to grow.

Therefore, the role of oxygen barrier is mainly to protect the metal parts of the system from corrosion and rust, not for the pipeline itself!!

According to the anti-oxygen standard, the floor heating pipe can be divided into two categories: oxygen resistance and non-oxygen resistance, of which oxygen resistance is divided into internal oxygen resistance and external oxygen resistance pipe, so what are the benefits of the oxygen barrier layer on the floor heating pipe wall? Let's analyze the things about oxygen-blocking floor heating pipes.

First of all, let's take a look at what oxygen barrier is; Oxygen resistance means to prevent oxygen from entering the pipe through the pipe wall, and corrode the metal equipment in contact with the water flow through the water flow, and the phenomenon of oxygen infiltration causing damage to the floor heating system first appeared in Europe in the 80s of the 19th century, when pipes made of polymer plastics have been widely used in new and renovated floor heating projects in Europe. Subsequently, Germany issued a new DIN 4726 standard, which clearly stated the standard requirements for the oxygen impermeability of polymer plastic pipes.

In order to fundamentally solve this problem, it is recommended to use floor heating pipes with anti-permeability function. Most of the polymer plastic floor heating pipes produced by some manufacturers in Europe have the function of resisting oxygen permeability. In recent years, some domestic manufacturers have also launched floor heating pipes with anti-permeability function, but there is no specific relevant standard in China (only JGJ142-2004 "Ground Radiant Heating Technical Regulations" Article 1 mentions:

When the hot water system shares the same centralized heat source with other heating systems, and the other heating systems use corrosive components such as steel radiators, the plastic pipe should have an oxygen barrier layer or add oxygen scavengers in the hot water system"), so the effect of its anti-permeability function cannot be effectively evaluated or passed the authoritative test.

Oxygen-blocking underfloor heating pipes are very resistant to oxygen permeability at high air humidity and are able to withstand stretching without breakage. With a melting point of more than 180, oxygen-blocking series pipes such as Giakomini and South Korea's Akcome have always been brand products with good feedback on the market, so what are the benefits of oxygen-resistant floor heating pipes?

First of all, there are many microorganisms that cannot be seen by the naked eye in the floor heating pipeline, and their long-term survival in the floor heating pipe is the main reason for the "scaling" of the pipe wall. Preventing the infiltration of oxygen, oxygen-blocking underfloor heating pipes can greatly help reduce the number of microorganisms. Secondly, like the scale in the kettle of boiling water, the scale is the Ca2+, Mg2+ metal ions in the water after a series of physical and chemical reactions precipitate, which is an endothermic reaction process, which occurs under the condition of increased temperature.

Reducing the amount of oxygen ions reduces the synthesis of coagulates such as CaCO3 and MgCO3. The heat dissipation of the tube is a cooling process. And in the closed boiler operation system, the isolation from the outside world has a relevant role and significance in the maintenance of the floor heating system.