In general, a family of 2 people should choose the 58-1.8-14 solar water heater.
58 means the vacuum tube diameter is 58mm, 1.8 means the vacuum tube length is 1.8 meters, and 14 means the model has 14 vacuum tubes . The water capacity is approximately 130 liters. It is definitely not only used for bathing, but it can also be used for washing vegetables, fruits, clothes, etc.
Calculated based on 100 yuan/branch pipe, the price is 1300 yuan (bare metal, excluding pipe fittings and valves, etc. In addition to pipe fittings , valves and installation fees, it can cost 1,300 yuan). just over 1,500 yuan, but it is very convenient to use. This saves a lot of fuel costs and time for boiling water every year.
Solar product brand machines have high added value. If youWe choose second and third level products, they will be very suitable for ordinary households. For example, “Jiangsu Siji Muge Solar Energy”, “Shandong Dezhou Yihui Solar Energy”, “Beijing Zhongke Tianquan Solar Energy” and so on.
Wish you a better choice of solar energy and a happier life!
There are hundreds of brands of solar water heater products on the market, making the distinction between good and bad dazzling and difficult. According to experts, China has currently formulated a series of standards and normative measures for the solar energy industry. At the end of last year, the General Administration of Quality Supervision, Inspection and Quarantine conducted a large-scale random inspection of solar water heater products and announced the results to the outside world. , so that consumers have a choice. Among them, brands such as Tsinghua Sunshine, Siji Muge, Temple, Huangming, Peking University Zhengyuan, Sangle, Taiyangyu, Linuo, Sangxia, Huihuang and Meida have become "high-quality products" with their superior quality.
Based on the summary and research of industry insiders, consumers are recommended to take the following steps to choose, and they will be able to purchase satisfactory products. One thing to consider:
1. Generally speaking, the thermal performance indicators related to the immediate interests of consumers are the average thermal efficiency and the average heat loss coefficient of solar water heaters. These two indicators are key indices that determine the heat capture and insulation capabilities of solar water heaters. Generally speaking, the higher the average thermal efficiency, the higher the heat collection capacity of the product; and the lower the average heat loss coefficiente, the stronger the heat storage and insulation capacity of the product.
2. Carefully observe the coating on the glass tube inside the vacuum tube. This coating is called selective solar absorption coating. A good quality coating has a uniform color and does not show any shedding phenomenon. , and there are no stones or nodules on the glass. The brackets supporting the inner glass tube are placed correctly and are not loose. If consumers do not have relevant professional knowledge, they may choose well-known brands such as “Three High” pipes.
3. Pay attention to the distance between the vacuum tubes. Generally, the center distance between the two tubes is approximately 70 mm.
4. Pay attention to whether the reflector design of the product can make full use of the heat-absorbing surface of the vacuum tube and whether the vacuum tube can receive light to the greatest extent.5. Generally speaking, in winter and sunny days, it should be used with electric heater, so you should also choose products with electrical safety design.
6.Check the thickness of the water tank insulation. The thickness of the flat insulation layer should be 45mm as standard, and the overall polyurethane foam insulation is best. Polyurethane foam is light yellow, a bit like a sponge. The foam has relatively uniform pores and exhibits some elasticity when pressed by hand. However, if the insulating layer is too soft, it means that its density is low, which is not conducive. heat preservation.
7. The support design of domestic solar water heaters should be reasonable and should have sufficient strength and rigidity to ensure sufficient bearing capacity.