Hello, thicker floor heating coils are not always better.
In floor heating projects, plastic pipes with a diameter of 16mm or 20mm (PE-RT, PE-X, PP-R, PP-B pipes) are usually used at a certain spacing and type according to the requirements of the design drawings. It is necessary to lay a thermal insulation layer (thermal insulation) on the cement foam or benzene board.
In the range of 16-20mm, the smaller the pipe diameter, the faster the water flow, the higher the heat dissipation efficiency of floor heating and the small temperature difference between the inlet and outlet water in the boiler, which also saves part of the heat loss. If it is more than 20mm or thicker, this may cause slow flow, slow heat dissipation of the underfloor heating and often the underfloor heating will not be warm.ud.
I hope my answer is helpful~
Choosing floor heating coil: Is it better to use Poly or Watts? Does an expert know?
Answer: I think copper pipes are the best choice for floor heating coils, followed by plastic pipes. Among plastic pipes, PERT pipes are the best for heat dissipation; affect the heating effect. There will be an impact, but there will be environmental problems. Next, I will talk about this series of things based on my professional experience.
How to select materials for floor heating coils?The function of the floor heating coil is to dissipate heat, and the required pipe material has the characteristics of good heat conduction. Since it is heating, in accordance with the national heating design specifications and standards ofe materials, pipes with good heat dissipation, anti-oxygen penetration, high temperature resistance and no joints should be used. Plus, I think it should be easy to build. .
Therefore, metal pipes are the first choice for good heat dissipation, such as copper pipes, aluminum pipes, steel pipes, etc. Obviously, steel pipes are not corrosion resistant, joints are easy to leak, and they are not easy to construct and install. Aluminum pipes are also not corrosion resistant, and the same goes for copper pipes, which are not corrosion resistant and are more difficult to construct. All three also have the disadvantage of being difficult to construct, which is why metal pipes were eliminated first.
Among plastic pipes, you have the choicebetween PPR pipes, PE pipes, PB pipes and aluminum-plastic pipes. Among them, PPR pipes, PB pipes and aluminum-plastic pipes. cannot be disposed of without seals. Among them, aluminum-plastic pipes should not be used as buried pipes, so naturally these types of pipes are disposed of first, leaving only PE pipes.
PE pipes can be used in heating systems, including PERT and PEX pipes. What are the characteristics of these types?PERT Pipe: This is a hot melt connected pipe. The hose is flexible and has good extensibility. There is an oxygen barrier layer on its surface to form an oxygen-resistant function, which can. Effectively prevents oxygen from entering the system through the pipe wall. Its advantages are good heat dissipation and easy construction. Its disadvantages are that it does not resistnot at high temperatures and the joints leak easily.
ButThe temperature of our floor heating is below 60 ℃, and the construction process does not require any joints, so this defect does not pose a threat.
PEX tube,It can be mainly divided into three commonly used pipes: PEXC, pexa and pexb To put it bluntly, these three pipes are just the result of different crosslinking methods. They all have the characteristics of high temperature resistance and can. generally withstand water temperatures of 110 degrees; When used in heating systems, they will also add an oxygen barrier film on the surface of the pipe, thereby forming an oxygen barrier function. The advantages of Pex pipes are resistance to high temperatures, long life and the use of clamping sleeves to tighten the connectionn, making joints less likely to leak. The disadvantages are poor thermal conductivity, hard pipes and construction difficulties. .
What should you pay attention to when installing these two types of pipes in heating pipes?Pert and PEX pipes are widely used in heating pipes. Naturally, these are pipes whose function is to prevent oxygen leaks. Among them, Pert is the most widely used in floor heating coils because it is simple to construct and affordable. good thermal conductivity. Since the pipe can only be connected by hot melt, once the pipe is damaged, the entire circuit pipe can only be replaced by certain people. During construction, the pipe wall is very thin. easy to disclose later.
Pexa and Pexb pipes are widely used in main water pipesheating; while Pexc pipes are often used in coil pipes. This is because they are white and everyone thinks they are very eco-friendly. , during its construction, due to its own characteristics, the pipe will first be fixed on the steel wire, otherwise it will not be fixed using staples. Such a construction process is of course more expensive than using pert. Moreover, the cost of pexc pipes is inherently higher than that of pert, so the cost of these pipes is higher than that of pert.
SummaryPert pipes are preferred for heating coils in terms of heat dissipation; from a construction point of view, Pert pipes are preferred in terms of cost performance; Of course, it is also possible to use pexc pipes. The article gives some precautions and understandings in their construction. Finally, the necktheir of the pipe will not affect its heat dissipation, but the color is a way to judge the quality of the pipe.
What type of pipe material is typically used for floor heating coils?
The best floor heating pipes are Poly brand and imported premium brands. Domestic Mingshi PEX pipes have the same thermal conductivity as PERT pipes. The flexibility of PERT pipes is better than PEX pipes. The density of PEX pipes is higher than that of PERT pipes. are superior to those of PEX pipes. PERT pipes can be welded, but PEX pipes cannot. It is recommended to choose PERT floor heating pipes for floor heating pipes
Generally, the commonly used floor heating coils in China mainly include PE-XA pipes and PE-RT pipes. The most common PEXA pipes on the market today. sont PEXA peroxide pipes. Polyethylene combined floor heating pipes, this technology appeared in France as early as 1950s and It has been applied and practice has proven that PEXA pipes are very suitable for floor heating pipes. At the same time, regardless of PEXA
PEXB
PEXC, because it is a thermosetting material, it cannot be hot connected. Originally it could only be connected with copper parts. A poor connection can easily lead to water leaks. There are already special flexible star joints on the market, which are mechanical connections made of plastic material. There is no water leakage caused by inconsistent thermal expansion coefficients. But in fact, for the majority of users, PEX is a thermosetting and non-recyclable material, the PEX pipes on the market are pure raw material pipes and cannot be added withrecycled materials. The pure raw material pipe of PE-RT pipe is more expensive and can be recycled, making the price of PE-RT pipe cheap and the quality decreasing. In addition, its texture is also hard and difficult to bend.