Comparison 1: comparison of security The strength of st […]
Comparison 1: comparison of security
The strength of stainless steel is not easy to pull. The pipe is usually a welded pipe, and the pipe wall has a weld. The strength of this weld is not very good, which is easy to crack, so that the heating pipe is prone to leakage and explosion (of course with welding The improvement of technology, the process in this area has been greatly improved, the quality of the product is guaranteed, and the probability of the total problem is very small, but it is not guaranteed to be foolproof, especially in areas with poor water quality, it is more prone to problems), Of course, you can say that stainless steel pipes also have seamless pipes. The quality of this kind of pipe is no problem, but the price of stainless steel seamless pipes is several times more expensive than copper pipes. Therefore, there is no stainless steel seamless pipe on the market unless it is military. There are special requirements for the use of seamless tubes; the copper tubes are relatively soft and easy to pull, so the copper tubes are all seamless tubes, which are not easy to leak, and the copper tubes have good ductility and are not prone to bursting (this is like Like a balloon, it won't explode if you blow too much gas.) From this point of view, the stainless steel tube is obviously not as good as the copper tube.
Comparison 2: comparison of scaling and life
It is well known that the production of scale is conditional, and it requires high temperature above 70 degrees and no flowing water to form scale easily. The electric water heater faucet products use the principle of instant heating. The heated water always flows in the body, and the use temperature is usually not more than 60 degrees, so it is generally not easy to produce scale whether it is a stainless steel pipe or a copper pipe. But why do many electric heating tubes in normal use produce scale? There are two main reasons. One is that the water quality used is really poor, and the other is the water temperature used is too high. If the water temperature used is too high, such as more than 70 Degrees, plus the residual heat of the electric heating tube itself, this temperature may be more than 80 degrees after the faucet is used, and the water does not flow after the electric faucet is used, so this time is the most prone to scaling, if the electric water faucet is used After washing with cold water to remove the heat inside, it is not easy to produce scale. It can be seen from the above that the scale depends on the temperature of the water and whether the water is flowing. When the use temperature is fixed, it depends on the residual heat of the electric heating tube. If the residual heat of the electric heating tube is small, it is not easy to produce scale, so the electric heating The residual heat of the tube should be reduced as much as possible. This should be done from two aspects, one is to use a material with good thermal conductivity, and the other is to make the electric heating tube thinner (the thinner the electric heating tube, the less heat inside, because the center of the electric heating tube is away from the water Recently, experiments have shown that reducing the diameter of the heating tube from φ7 to φ6 reduces the residual heat of the heating tube by half, which means that the thinner the tube, the smaller the residual heat of the heating tube, but it is more difficult to make the electric heating tube thin , The precision of the equipment is very high, the thinner the heating tube, the less heat accumulated inside, the longer the life of the heating tube), of course, the thermal conductivity of the copper tube is better than stainless steel, but this gap is only 3-5 Seconds, so although the copper tube has an advantage, the advantage is not obvious, and the life of the electric heating tube is also related to the size of the residual heat. The smaller the residual heat of the electric heating tube, the less heat is accumulated in it, and the life of the electric heating tube is longer. . As mentioned above, although the copper tube is a little better than the stainless tube in scaling and life, it has no obvious advantages. Only thinning the electric heating tube is the last word. Of course, this requires the manufacturer of the electric heating tube to produce it. It comes out finer and safer, allowing consumers to really use better and safer products.
Comparison 3: Comparison of cost performance
It is well known that the density of stainless steel is much lower than copper, and the price of stainless steel is only about 1/3 of that of copper. Therefore, the cost of stainless steel heating tubes is much lower than that of copper tubes. Heating pipes, stainless steel pipes have certain advantages in this respect, just like cars, there are millions of them, tens of thousands of them,Millions of cars accelerate from 0 to 60 yards in about 6 seconds, while ordinary cars accelerate from 0 to 60 yards in about 10-12 seconds. Although it is a few seconds away, the feeling of driving to the road is different. I think that as long as anyone who has driven a car understands this, if there is not much difference between the two from the perspective of use, the choice of which heating method depends on the consumer's own choice.