The difference between the two lies in the ability to withstand pressure.
The full name of the pressurized water heater is phase change thermal conductivity fully pressurized solar water heater. The phase change thermal conductivity collector it uses is composed of collector tube, phase change heat sensor. pipe and transmission Constructed of aluminum thermal wings. Because there is a threaded connection between the phase change heat pipe and the water tank, and there is no liquid in the vacuum tube, it can withstand the pressure. The full name of pressureless water heater is direct plug-in all-glass vacuum tube solar water heater. Since the vacuum collector tube and water tank are sealed by rubber sealing ring, they cannot withstand pressure.
The water from the pressurized water heater has a risthat hidden leak due to the threaded connection between the heat pipe and the water tank. The heat collector pipe of the pressureless water heater is made of high borosilicate glass, which is extremely unlikely to be damaged by natural disasters.
What are pressurized and non-pressurized solar water heaters?
The solar pressurized water heater is a solar water heater that uses a pressurized water tank. This pressurized water tank can provide strong water pressure. It directly uses the water supply pipe network pressure as the hot water outlet pressure, making the hot water pressure equal to the cold water pressure. This pressurized solar water heater solves the problem of ordinary roof-type solar water heaters that rely on gravity to lower the hot water pressure. It not only has high water pressure, but also has easy adjustment of thetemperature and will not cause temperature changes. due to the uneven pressure of hot and cold water, the bathing experience is more comfortable.
What are the advantages and disadvantages of pressurized solar water heaters
The pressurized type is a closed water tank with a thick inner tank that can be placed anywhere in the house, such as bathroom or living room, etc., relies on tap water pressure to discharge water. The advantage is to avoid hot and cold water temperature while bathing. The whole system is similar to an electric water. heating; the non-pressure type is an open water tank with an exhaust hole on the top of the water tank, and the water discharge relies on gravity. For drainage, the water tank should be placed on the roof.
What is the difference between pressurized solar water heaters and n solar water heaterswe pressurized?
First of all, when choosing a solar water heater, you should choose a pressurized water heater. Because the pressurized water outlet is stable, it will not become hot or cold. Secondly, it is recommended to choose a hot plate water heater based on the pressure type. Since the heat collector plate water heater is split type, the pressure water tank can be placed inside. There is no need to install it on the roof as a whole like a vacuum tube water heater, which not only solves the problem of roof pressure, but also ensures the problem of tank insulation of water. Third, the pressurized water tank of the selected solar water heater must have an enamel inner tank. The enamel inner tank has good anti-corrosion effect, strong pressure and long service life. As long as it meets the three points above, iIt is essentially a solar water heater with high thermal efficiency. Of course, based on this, try to use imported heat collecting plates and anti-freeze media. Although its price is a little higher, it has high thermal efficiency and a long lifespan. Many foreign brands of domestic solar water heaters are counterfeit. They are assembled from parts purchased domestically and sold under the import name. Most genuine imported products come with English installation instructions, and each interface of the machine has English labels, which can be distinguished with a little attention. So there is no need to worry too much, pay attention to the brand and of course have the best commitment to after-sales service.
The difference between pressurized solar water heaters and non-pressure solar water heaters is thefollowing:
The full name of pressure water heaters is fully phase change thermal conduction. pressurized solar water heaters, which use a phase change thermal system. The conductive heat collection tube is composed of a vacuum tube, a phase change heat pipe and a heat transfer aluminum fin. Because there is a threaded connection between the phase change heat pipe and the water tank, and there is no liquid in the vacuum tube, it can withstand the pressure. Under sunlight, the selective absorption coating transfers the collected heat to the phase change heat pipe through the heat transfer aluminum wings. The heat transfer fluid in the phase change heat pipe uses two phase change processes to transfer heat to the water in the water tank. , complete the heat exchange. Pressure water heaters are used to growr water under pressure (the pressure is basically the same as the water pressure in the local pipe network), that is, the hot water in the water tank is expelled depending on of water pressure. When using, make sure the water supply tap is always open and the water is not turned off. Since the heat pipe and the water tank are connected by threads, there is a risk of water leakage. However, there is no water in the vacuum tube, so there is no possibility of one tube being damaged and the entire can of water leaking out.
Pressureless water heater is called direct plug-in all-glass vacuum tube solar water heater. Since the vacuum collector tube and water tank are sealed by rubber sealing ring, they cannot withstand pressure. . Non-pressure water heaters are used when they fall into water without pressure, that is, in sPressing the chute to release water into the water tank. The main pipelines in the lower part of the water tank are the inlet/outlet pipe and the overflow pipe: when the water tank is full, the overflow alarms from the overflow pipe and the valve water supply are turned off when in use, hot water is supplied; flows from the inlet/outlet pipe under the action of gravity depending on the height difference, the overflow pipe then plays the role of air supply. Since there is water in the vacuum tubes of non-pressurized water heaters, if one tube is damaged, all the water in the tank will flow out. However, "Shaile" brand all-glass vacuum collector tubes are made of high borosilicate glass, so the risk of damage from natural disasters is extremely low.
Supplement: The total pressure type is subdivided into two types: full pressure type and full pressure type means the manifold and the water tank are. fully closed and the system operates under pressure. The pressure depends on the water supply pressure of the local municipality. Another type of collector is open to the atmosphere, while the water tank is pressurized.
When both solar water heaters use water, the cold water flows countercurrent to the hot water, which is similar to the water flow of the electric water heater. The water supply flow rate is large and comfortable for washing. But once the water temperature increases (the boiling point of water increases with pressure under pressure), the pressure reducer (safety valve) is key! Because hot steam can push the train and it's so powerful! At present, in the industry of using solar thermal energy, under conditions where wedepends on the sky to collect heat, there is no fear of overheating or overheating. Many products lack humanistic design! Unpressurized means the entire system is open and connected to the atmosphere, and the water temperature will not exceed 100 degrees! (When the sun is good, you can boil the pot.) The hot water pressure depends on the height of the installation. It is only 0.98 kilograms at a height of 10 meters! My value is that the hot water pressure should reach 1 kg to be comfortable.
Of course, different people will have different feelings. In another aspect, this Chinese style solar water heater forms a dual-channel water supply situation once the pressure of municipal water supply changes (the architectural majors of water supply and drainage call it intensive water supply, because the fluctuation of thewater pressure drives the bath water). become hot and cold), shit The basin is held in the sunIt can be installed on the head of the water heater! Especially in summer and autumn, when the sun is sufficient, the safety and comfort of the all-glass vacuum collector tube directly inserted into the falling water solar water heater is greatly reduced, so that the thermostatic valve or faucet corresponding thermostat reflects the level of humanism of the manufacturer. consumer concern. Of course, the correct assortment of thermostatic faucets has not yet become a trend among solar manufacturers.
When choosing a solar water heater, you should choose a heater water under pressure. Because the pressurized water outlet is stable, it will not become hot or cold. Secondly, it is recommended to choose a hot plate water heater based on the pressure type. Since the water heaterThe heat collecting plate is split type, the pressure water tank can be placed inside. There is no need to install it on the roof as a whole like a vacuum tube water heater, which not only solves the problem of roof pressure, but also ensures the problem of tank insulation of water. Third, the pressurized water tank of the selected solar water heater must have an enamel inner tank. The enamel inner tank has good anti-corrosion effect, strong pressure and long service life. As long as it meets the above three points, it is basically a high thermal efficiency solar water heater. Of course, based on this, try to use imported heat collecting plates and anti-freeze media. Although its price is a little higher, it has high thermal efficiency and a long lifespan. Many foreign brands of heatersto domestic solar are counterfeit. They are assembled from parts purchased domestically and sold under the import name. Most genuine imported products come with English installation instructions, and each interface of the machine has English labels, which can be distinguished with a little attention.