First of all, the use of solar water heaters is low noise and makes almost no noise. Second, it is relatively environmentally friendly and reliable, without dangers such as pollution and poisoning, and is low carbon and environmentally friendly. Second, solar water heaters can be used by multiple people and have good heat transfer performance. Even in winter, solar water heaters have a very good anti-freeze effect. The downside is that the solar water heater is relatively large, so it will be difficult to install and maintain. Even poor installation can lead to accidents.
Advantages: solar water heaters have no noise, no pollution, no poisoning and other dangers, reliable installation, low carbon content and environmental protection itself high; technical processing technologye and good heat transfer performance. Well, the hot water production is large, suitable for use by several people in the family in the cold winter, the solar water heater has strong anti-freeze ability, and in the summer, the solar water installation over large areas can also play a role in floor insulation.
Disadvantages: The solar water heater is large in size, inconvenient to install, and has certain restrictions on installation conditions due to its large size and complex objects, maintenance is more tedious and needs to be repaired by professionals; Solar energy has a negative impact on sunlight. It is relatively resource dependent so areas with cloudier and rainier days are not suitable for solar energy.
Detailed information
Theoretically, a solar water heater is a one-time investment and its useIt costs nothing. It's actually impossible.
The reason is that no matter where you are, the weather is cloudy, rainy and snowy and there is insufficient sunshine in winter every year. In this climate, hot water is mainly heated with electricity (some products are heated with gas). On average, more than 25-50% of hot water must be heated entirely with electricity each year (this varies by region). , and there are many cloudy days). Actual electricity consumption in the region is even higher.
Statistical data in the Shanghai area in the past three years shows that the annual average rainy day reaches 67%, and 70% of the thermal energy of solar water heaters comes from electricity or gas).
As a result, the actual power consumption of solar water heaters is higher than that of heat pump water heaters. In addition, the “anti-freeze belt for heatingelectric ffage (available only in northern regions)” placed on the external pipe of the solar water heater also consumes a lot of electricity. In addition, there are many technical defects in the structure of solar water heaters that are difficult to solve.
The solar water heater lighting panel needs to be installed on the roof, which is large and cumbersome, affects the beauty of the building (more obvious in high-end residential areas), and can easily damage the waterproof layer of the roof.
Reference documents:
Baidu Encyclopedia - Solar water heater