This should be determined based on the product quality and installation specifications of solar energy to determine whether it can be used in winter.
As we all know, solar water heaters mainly rely on vacuum tubes to collect heat and water tank to keep it warm.
As for the vacuum tube, if the cost is low, its absorption rate is low and its emission rate is high. Relatively speaking, the water temperature will be lower, so it cannot be used in winter. I remember seeing in a TV commercial that Huang Ming has a vacuum tube specially developed for use in winter environments. It is said that it is the only product designated by the Antarctic scientific expedition team, and it can still use hot water in a negative environment. 40 degrees.
Next, regarding the insulation layerof the water tank, if the insulation is not up to standard, no matter how good the heat collection performance is, it will turn into cold water overnight. When purchasing a water heater, you can check whether the insulation layer of the water tank is evenly foamed and the density is low. You can also squeeze it with water to see if it is full.
Finally, regarding the installation, since some pipes and interfaces of the solar water heater are exposed to the outside, winter antifreeze and heat preservation measures should be taken. sockets, so the pipes should be installed with three layers of insulation and antifreeze tapes, which can avoid frozen pipes and blockage, and deliver hot water safely to your house.
I hope my answer can help you. .
The reason why Yunnan becomes dark later is mainly due to its locationgeographical ation and its natural conditions. Yunnan is located in the southwest border area of China and belongs to the low-latitude equatorial subtropical region. At the same time, Yunnan is located in an area where plateaus and mountains intersect, with higher altitudes and relatively longer daylight hours. Additionally, Yunnan has a hot and humid climate, often shrouded in clouds and fog. Air humidity is relatively high, which prevents solar energy from fully reaching the ground, thereby affecting the duration and intensity of sunshine. In addition, there are many mountainous areas in Yunnan, surrounded by mountains, prone to terrain obstacles, making it difficult for the sun's rays to reach some places. For the above reasons, it gets dark relatively late in Yunnan.