Rubber and plastic insulating cotton. According to an announcement released by the manufacturer of the solar thermal insulation barrel, from April 2023, the solar thermal insulation barrel will be wrapped with a layer of rubber-plastic insulation cotton, which can realize the re-insulation of the solar thermal insulation barrel. thermal insulation, and the insulation effect is better. Insulated buckets, commonly known as lucrative buckets, are a type of bucket that has a lid. They can be divided into two categories: one is resin and the other is stainless steel. It does not need to be plugged in. . The hot storage time is about 6 hours and the cold storage time can be up to more than 12 hours.
At present, more and more families choose to install solar water heaters. Compared with gas water heaters and electric water heaters, solar water heaters have the advantages of environmental protection, cost savings.es energy and ease of use. But solar water heaters also have their own shortcomings: they freeze easily in winter, and in cold weather, water pipes placed high in the sky can even freeze and crack. Although in some cold northern cities, solar water heater manufacturers provide "electric heater antifreeze belts" (also known as "electric heater companions"), which can reduce the likelihood that outdoor pipes will be frozen and cracked, in real life there are still many electric heating companions installed. The water heater was cracked by frost. Aside from the defects of the solar water heater itself and the extremely cold climate in some areas where it is used, this problem is partly due to the installer's failure to cover the exterior pipes with insulating cotton when installing it. installation:
1. Since the panelsLighting of solar water heaters need to be installed on the roof, owners usually do not follow the installers to the roof for construction, so the installers often do not put insulation cotton on it to avoid trouble.
2. Some selfish installers will keep the insulation cotton and sell it to individuals for profit.
Failure case
Ms. Wen's house installed a solar water heater during the renovation. But by winter, Ms. Wen's solar water heater no longer works. It can occasionally produce some hot water when the sun is particularly bright, but most of the time there is no hot water. During the coldest days, the water heater would freeze completely and the family could only go to the bathhouse outside to take a bath. Ms. Wen discovered the after-sales service of the solar water heater. Afterprofessionals came to inspect it, they found that although the water pipes exposed at high altitude for many years were wrapped with electrical antifreeze tape, they were not. covered in insulation cotton, and one of the water pipes was frozen and cracked. Finally, Ms. Wen replaced the water pipes and covered all the water pipes with insulation cotton. Sure enough, there were no more frozen cracks in the water pipes the following winter.
On-site monitoring
Since solar water heaters are installed on the roof, there are risks for safety during installation, therefore This At this stage, it is not recommended that the owner personally supervise the work. The owner can have good communication with the installation workers in advance and ask them to put insulating cotton.
1. In regions with cold climatesd, anti-freeze belts for electric heating should be installed, and at the same time, insulating cotton should be put on the outer pipes. In winter, the outside temperature is very low, and both are essential. The solar water heater has two water pipes, one is the upper and lower water pipes, which carry water up and down. The other is an overflow pipe, which brings the water excess water to the bathroom when it is full to prevent it from spilling onto the roof and causing waste of water resources. During thermal insulation treatment, the two pipes should be combined for thermal insulation, because the temperature of the outlet pipe is also equivalent to that of a heat tracing pipe, which is more conducive to improving the thermal insulation performance.
2. When choosing insulation cotton, it is recommended to use foam insulation wrape polyethylene or an insulating cover made of rubber-plastic sponge. The thickness is preferably greater than 30 mm and the exterior is grouped. The insulating sleeve must completely enclose the water pipe, including the joints. The temperature in the northern region is low. It is better for homeowners to install thickened insulation wraps and wrap them with aluminum foil tape, which can effectively prevent water pipes from freezing and cracking.
3. Use heating antifreeze devices correctly. Although solar water heaters used in the North are equipped with anti-freeze heating devices, many homeowners mistakenly believe that these are used to defrost pipes when they become frozen and clogged. As a result, not only can they not prevent water pipes from leaking. freeze, but they can also reduce the lifespan of solar water heaters. LThe correct practice is to listen to the weather forecast and turn on the antifreeze device for preheating protection when the temperature remains below 0°C. Especially in very cold northern regions, where the temperature is always below 0°C, the heater and antifreeze device should always be switched on. If the nighttime temperature in other areas is relatively low, the antifreeze device can be activated at night and turned off during the day. Homeowners are reminded that in order to avoid accidents, if there is an electric heater, a leak protector must be installed.