Water heater is one of the commonly used household appliances, with different styles and heating principles. How does a solar water heater heat it? PChouse will lead you to learn more.
1. Solar water heaters are actually based on the principle of using vacuum tube water heaters to absorb heat. During operation, sunlight shines on the heat collecting plate, then the heat collecting plate transfers the absorbed solar heat to the water tank. The water tank will then transfer the heat to the cold water through a jacket or coil. The cold water from our water heater becomes hot. This is a heating principle of solar water heater.
2. Sunlight passes through the first glass layer of the heat-absorbing tube and shines on the black heat-absorbing layer of the second glass layer, thereby absorbing the heat from thesolar energy. is a vacuum separation between the two layers of glass. If it is hot, heat transfer will be significantly reduced (radiant heat transfer will still exist, but there will be no thermal conduction or thermal convection). transferred to the water in the glass tube, heating the water in the glass tube, and the heated water will gently move upward along the heating surface of the glass tube and enter the storage bucket. isolated water. 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 water in the insulated water storage bucket is continuously heated, thereby reaching the desired water temperature.
Solar water heater is a popular domestic water heater that uses solar energy as energy. It is favored by people and has become a representative productif for energy saving, environmental protection and reduction of carbon emissions. The heating method of solar water heaters refers to the process of converting solar energy into thermal energy and transferring it to water to heat water. This article briefly explains this.
The heating methods of solar water heaters are mainly divided into two methods: direct heating and indirect heating.
Direct heating involves directly converting solar energy into thermal energy via solar collectors to heat water. The internal structure of the solar collector mainly includes heat-absorbing plates, heat-absorbing tubes and insulating layers. Once the solar collector receives sunlight, it absorbs solar energy through the heat-absorbing plates. heated and transferred to the water tank, heating the water. The direct heating methodect is simple, very efficient and reduces thermal energy transmission losses. This is a heating method commonly used in solar water heaters.
Indirect heating method means that the solar collector absorbs sunlight and converts it into thermal energy, then transfers the thermal energy to the heat exchanger. The heat exchanger is used to transfer thermal energy to the water tank. , and the water in the water tank is heated. This method requires an external heat exchanger for heating. The indirect heating method has more connections than the direct heating method. Solar energy cannot be directly converted into thermal energy during the heating process. However, due to the high efficiency of the heat exchanger, solar energy can be fully utilized to achieve better heating effects. .
In short, solar water heaters have thes features simple heating method, energy saving, environmental protection and pollution-free, etc., making it an economical and practical water heater for families.