With the continuous improvement of human beings' awareness of environmental protection and the country's vigorous development of new energy equipment technology, solar water heaters have now entered thousands of households. Solar water heater equipment can use the energy of sunlight to heat water to meet the needs of hot water in people's production and life. Moreover, solar water heater equipment is very mature, the production cost is relatively low, the price is affordable, and ordinary people can afford it. The editor himself lives in a rural area and has a solar water heater on his roof. As long as there is sun, there will be a steady stream of water. Hot water supply. Today we will take a look at the working principle of solar water heating equipment and its manufacturer.

The working principle of solar water heater equipment

The sunlight passes through the first layer of glass of the heat-absorbing tube and shines on the black heat-absorbing layer of the second layer of glass, absorbing the heat of the solar energy. , since the two layers of glass are vacuum insulated, the heat transfer will be greatly reduced (radiant heat transfer still exists, but there is no heat conduction and heat convection), and most of the heat can only be transferred to the water inside the glass tube, so that The water in the glass tube is heated, and the heated water flows upwards along the heating surface of the glass tube into the insulated water storage bucket. The relatively low-temperature water in the bucket enters the glass tube along the backlight surface of the glass tube for replenishment. In this continuous cycle, the insulated water storage tank is heated. The water in the bucket is continuously heated to achieve the purpose of hot water. The working principle of solar water heater equipment mainly includes the following two principles:

(1) The principle of water circulation is that water will flow automatically. This is because cold water is denser than hot water, cold water sinks, and hot water rises. , forming a natural convection cycle, causing the water in the water tank to gradually heat up until it reaches the set water temperature. When the intensity of the sun is not enough to meet the circulation needs, a water pump can be added to the water circulation closed circuit to achieve forced circulation.

(2) Principle of collector heat absorption: There is a special coating on the surface of the collector of the solar water heater. This coating has a large absorptivity in the visible range of solar energy. After absorbing it as heat, The heat radiation wavelength of the collector is in the long wave range, and the coating has a very low emissivity to long waves, thus effectively retaining solar heat. This heat is then used to gradually heat the cold water into hot water.

Let’s talk about the collector tube on this kind of collector in detail. The collector tube is actually like an elongated hot water kettle liner. It is made up of two glass tubes, one large and one small. The outer layer It is transparent, and the inner layer is coated with a light-selective absorption coating. There is a straight space between the inner and outer tubes. It is the core of the solar water heater and is used to maximize the absorption of heat energy after solar radiation; because the vacuum glass tube is round Shaped, it has the characteristics of naturally tracking the wide source of the sun. Coupled with the reflection principle of the reflector, the glass tube can receive light from all sides, the heat collection effect lasts longer, and the water temperature is higher. Even in alpine areas, it can operate normally all year round. .

Manufacturer and price introduction

Huangming Solar Co., Ltd. Huangming Solar Group, as the world leader in the solar energy industry, promotes more than 2 million square meters of collector area annually, which is equivalent to It is more than double the total of the entire European Union and more than twice that of North America. The brand integrates Chinese famous brands, Chinese well-known trademarks, and Chinese environmental label products. Beijing Siji Muge Solar Technology Group Co., Ltd.

Founded in 2000 and listed on the Shanghai A-share main board on May 21, 2012, it is a global leader in new energy thermal utilization and a partner in China's aerospace industry. The designated supplier of the China National Pavilion at the 2015 Milan Expo.

The price of solar water heaters from the above manufacturers is around 2,000-4,000, but if you want to install it now, it is recommended that the price of flat-panel solar water heaters be higher, and it is energy-saving and environmentally friendly. The above is the working principle and manufacturer introduction of solar water heater equipment. In terms of manufacturer recommendations, you can go online to find several more for comparison, and try to find a cost-effective product that you trust. Finally, the editor would like to remind you that solar water heater equipment is a durable product, so everyone must consider the installation location, pipe laying, etc. in advance during the decoration process. When choosing a solar water heater, not only the strength of the brand must be considered, but also the strength of the brand. We should also pay attention to the after-sales service of this brand.

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