The optimal length of the vacuum tube is generally based on the optimal ratio between the water capacity of the inner tube and the heat absorption area of the film layer. It can heat the water in the vacuum tube in the shortest time. and carry out timely heat exchange to heat the water in the vacuum tube. Switch to the water tank. At present, those with a length of 1.8 meters are mainly used in the market, there are also ones with a length of 2.1 meters, and there are also ones with a length of 1.6 meters (relatively few many). were eliminated. If the vacuum tube is inserted vertically, the 2.1 meter long one will heat up quickly and exchange a large amount of hot water. Because the heat exchange between hot water and cold water in the vacuum tube is based on the natural siphon principle, hot water floats and cold water sinks. The vacuum tube is inserted vertically. The longer the vacuum tube, the colder and hotter theaud are obvious. the stratification of the water is greater and the more hot water is exchanged.
What is the diameter of 16 Haier Double Happiness solar tubes?
1. Solar vacuum tubes used in household solar water heaters are divided into 37, 47, 58, 70mm, etc. .according to the diameter, and are divided into 1.2, 1.2, 1.5, 1.6, 1.8, 2.1, 2.3 m, etc.
2. According to the production process, it is divided into: solar ordinary black tube, three-height ordinary blue tube, three-height purple gold tube.
How to identify the quality of vacuum tubes
First, touch it with your hands. If the temperature is normal and slightly cold, it means that the vacuum tube is of high quality. it is hot, it means the quality of the vacuum tube is not good. Well, it absorbs heat and dissipates it at the same time, so the effect of using it in winter will be relatively poor;
Second, observe with your eyes. Duringof purchase, you should carefully observe the coating on the glass tube inside the vacuum tube. Lower solar energy The vacuum tube used only has 9 layers of coating, and the good ones have 12 layers with good quality. is uniform in color and appears black. The film layer has no scratches, peeling or peeling, and there are no stones on the glass. The support The support parts of the inner glass tube are correctly placed and are not loose.
Third, pay attention to the diameter and length of the vacuum tube, which directly determine the size of the heating surface of the vacuum tube and the tube spacing between the vacuum tubes. Generally, the center distance between the two. The tubes measure approximately 75mm.
It is best to choose black solar, porcelain and old ceramics. It does not have the problem of air attenuation of the heat absorbing coating of traditional glass tubes.functional, and it can also be integrated into the building as a building element.
Haier Double Happiness Solar has 16 solar cells with a diameter of 58 mm. The 16 vacuum tubes of the solar water heater are 58mm in diameter and 1.8 meters long. Some families use solar water pipes about 6 meters long, and some families use about 6 meters; some families use solar water pipes of sizes: single pipe 16-20cm, double pipe 18-28cm, double pipe 24-32cm, three pipes 25-32cm; four pipes 30 to 45 cm, five fifth taps 35 to 60 cm. Generally, the size of solar water pipes used in homes is 15-17cm.