Solar water heater water pipe with plastic tube or PPR tube good
PPR pipeline expansion coefficient is large, about 0.15mm/m degrees, which means the external temperature (such as summer and winter) or internal temperature (hot and cold) changes, a large deformation, because the PPR pipe is a rigid pipe, itself can not digest the deformation, so it is easy to cause deformation even Water Leakage pipeline system and plastic bending because of the aluminum composite pipe into a whole, the linear expansion coefficient with aluminum is about 0.025mm/m / C, PPR tube 1/6, the change of temperature, the deformation is smaller, and the plastic pipe is a flexible coil pipe itself can absorb a certain amount of deformation, will not cause the thermal expansion deformation of pipeline system.
PPR tube low temperature tolerance. PPR has a cold brittleness (brittle point of -20 degrees C), in winter (5 degrees Celsius) when the construction of special care. Aluminum plastic pipe without cold brittleness (brittle point is -70 DEG C), can be easily installed below -20 C. Heat resistance of PPR pipe is lower than that of aluminum tube. PPR long-term use temperature of 70 degrees C (50 years, 1MPa), the maximum use temperature of 95 degrees C; long term use of aluminum plastic pipe temperature of 95 degrees C (, 1MPa), the maximum use temperature of 110 degrees C.
The utility model relates to a solar water heater, which is a device for converting solar energy into heat energy, which is used for heating water from low temperature to high temperature, so as to meet the requirement of hot water use in people's life and production. According to the structure of the solar water heater is divided into vacuum tube solar water heater and flat type solar water heater, mainly vacuum tube solar water heater, occupy 95% of the domestic market share. Vacuum tube type solar water heater is composed of a heat collecting pipe, a water storage tank and bracket and other related parts, converting solar energy into heat energy mainly rely on vacuum tube, vacuum tube using the principle of cold water sinking floating, the water circulation and desired hot water
Aluminum plastic pipe is a kind of middle longitudinal welded aluminum pipe, the inner and outer layer of polyethylene plastic and between layers of hot melt adhesiveA new type of composite pipe. Polyethylene is a non-toxic, odorless plastic, with good impact resistance, corrosion resistance, weather resistance. The compressive strength of the middle layer longitudinal welding Aluminum Alloy tube with metal, the impact resistance of the pipe is easy to bend rebound, aluminum-plastic composite pipe with metal pipe and plastic pipe two strong pressure characteristics of anti acid corrosion resistance, is a model of a new generation of pipe. Plastic pipe (plastic composite pipe) is a kind of pipe is more popular on the market, the current market there are relatively well-known HSBC, Kim and Meifeng, due to its lightweight, durable and convenient for construction, and the aluminum pipe (plastic composite pipe) can bend more suitable for use in the home.
