How good are German water pipes? Is it really as magical as everyone says? I believe many friends who do plumbing renovations have had such doubts. After all, there are too many fake things on the market now. Users may only be interested in water pipes made in Germany, but what are the characteristics of real water pipes made in Germany? Are German water pipes really better than ordinary water pipes? In this regard, the editor interviewed more than 200 plumbers experienced in installing water pipes imported from Germany and summarized the following points.
1. Almanit water pipes are 100% manufactured in Germany. This is proven by relevant information and can be found that the manufacturing process of water pipes imported from Germany is also at the world's first level. Compared toother brands, it has the advantage of quality assurance.
2. The quality advantages of water pipes made in Germany are non-toxic, hygienic and do not contain toxic heavy metals: lead, mercury, chromium (hexavalent), cadmium, arsenic, antimony, aluminum, tin, barium, etc. Toxic metals. The raw material molecules of German water pipe brand Wanyi contain only two elements: carbon and hydrogen. Pipe fittings are made of high quality and environmentally friendly brass. does not contain nickel-plated products, which avoids damage caused by nickel ions. At the same time, the pipes have high toughness and can withstand greater pressure.
3. Long life expectancy. Studies have shown that the German Wanyi water pipe has a service life of more than 70 years under an operating temperature of 75 and water pressure of 1.0 MPa and a service life of more than 70 years.e life of more than 100 years at normal temperature, which is incomparable with ordinary; Water pipes.
4. German water pipes themselves are corrosion resistant, which solves the rust problem of traditional metal water pipes. The non-polar material of German water pipes prevents reactions with other chemical elements present in the water. does not need to be used when used. It does not flake, complies with food hygiene regulations and is more suitable for transporting drinking water.
5. Simple, practical and firm installation. German water pipes have good welding performance. Pipes and pipe fittings can be connected by hot fusion and electrofusion. They are easy to install, the joints are firm, and the strength of the connecting parts is greater than the strength of the pipe itself.
6. The manufacturing process goesmand of water pipes, the unique injection molding process of pipe fittings from the inside to the outside, not only makes the pipe fittings smooth and shiny, but also makes the injection molding process more uniform, which cannot be imitated. through other water pipes. The materials used are sufficient, the wall thickness of the pipe and the copper content of the pipe fittings are high. Under the same pressure and temperature conditions, the thicker the pipe wall, the longer the service life. The wall thickness of the German Wanyi tube far exceeds the international standard
Do you still remember the hydrogen car that "does not refuel or charge, has a range of more than 500 kilometers, and a sedan has a range of up to 1,000 kilometers"? Relying on hydrogen produced by water electrolysis to operate the body seems to bea pure joke today, but hydrogen energy has never been abandoned in the automotive industry. It has the characteristics of being clean, efficient and cheap. At this Beijing Auto Show, SAIC. Maxus A hydrogen-powered minivan has been revealed.
The hydrogen energy show car is based on the Maxus G20 and is called EUNIQ?7. The overall shape of the vehicle is basically the same as the gasoline version of the G20, except that it has been painted blue and white, which symbolizes cleanliness and energy saving. It is also very consistent with the petrol version, with gear levers and electronic handbrakes available, and it also offers two driving modes: sport and economical. The difference in this car is revealed when the hood is open. The engine and gearbox in the engine compartment are replaced by a set of fuel cell modules. Compared to the fuel-powered G20, the cThe interior design is simpler and clearer.
Did we not use hydrogen energy as promised? How come we installed the battery? In fact, the heart of this Maxus show car is hydrogen energy. The fuel cell module is only part of its powertrain. Added to this are hydrogen systems, three-in-one electric propulsion systems, power batteries, etc. , the whole vehicle The effect of hydrogen energy on the car body is achieved through a hydrogen power generation - battery storage - electric drive model. Compared to the absurd process of water - driving the car body, it is much more practical.
As it is a hydrogen energy model, its core is naturally hydrogen. The Maxus EUNIQ?7 is equipped with three hydrogen storage tanks, located in the center of the chassis and under the seats. To thisAt this point, someone should be worried about their safety. In fact, in addition to its relatively safe location, the material it uses is also fully wound with aerospace-grade carbon fiber. The fiber wall thickness is 26.5mm. Even a 7.62 caliber bullet cannot penetrate it at all. The resistance of the hydrogen tank reaches 70 MPa, approximately equivalent to the Jiaolong submersible operating at a depth of 7,000 meters...
Once the difficulty of storing hydrogen has been overcome in other aspects, there will be no big problem. In addition to the fuel cell located in the front part of the car, there is a "three-in-one" electric drive module and a ternary lithium battery on the rear subframe of the EUNIQ?7, forming a small closed loop for This assembly can manage hydrogen energy. In the event of a short-term breakdown, the vehicle body is powered by electricityity stored. It is worth mentioning that as a clean energy model, hydrogen energy basically will not produce exhaust gas after combustion, but it will produce water. Therefore, the exhaust pipe of the EUNIQ?7 becomes a "drain pipe" which drains water but does not discharge it. .
According to official data from Maxus, the 6.4 kg hydrogen storage tank of the EUNIQ?7 can be filled in 3 minutes at a hydrogen refueling station, and in this state , the NEDC cruising range of the vehicle can reach 605 km. This is also a major advantage of hydrogen energy vehicles over pure electric vehicles. Compared with some electric vehicles that can "charge for five hours and travel 300 kilometers", the EUNIQ?7 "charges for three minutes and travels 600 kilometers" is more. practical.
So, Maxus EUNIQ?7 is not a concept car, and it does not remain eitherno longer at the PPT stage without mass production. It’s a real hydrogen-powered minivan. But in reality, there are only a handful of hydrogen refueling stations in China, and this car still has many problems for domestic use. I just hope the auto industry can force infrastructure to be built. Not to mention that it's as common as gas stations and has the same coverage as charging stations before it's necessary to purchase them. Until then, electric cars will be left alone. .
This article is from the author of Autohome Chejiahao and does not represent the views and positions of Autohome.