Compared with traditional compact (integrated) vacuum tube or flat-plate solar water heaters, split solar water heaters (also called split solar water heating systems) have many significant advantages, especially suitable for the needs of modern buildings and high-rise residential buildings:
1.Flexible installation location
Core advantage: The collector (part that absorbs solar energy) and the water tank (water storage part) are separated.
Collector: It can be installed in the best sunny location such as the roof, balcony exterior wall, courtyard bracket, etc., without being restricted by the location of the water tank.
Water tank: It can be placed indoors (such as balcony, bathroom, kitchen, equipment room), attic, garage, etc., where it is convenient to connect pipes and the load-bearing is safe. It solves the problem of insufficient roof load-bearing and inability to place large water tanks.
2.Pressure operation, high and stable water outlet pressure
The water tank is directly connected to the tap water pipe, and the system operates under tap water pressure.
Good bathing experience: The hot water outlet pressure is the same as the tap water pressure, the water flow is strong and stable, and the bathing comfort is greatly improved, especially suitable for using overhead showers or multi-point water use at the same time.
Convenient connection: It is easier to connect in parallel with modern gas water heaters, electric water heaters or other water-using equipment to form a more complex hot water system.
3.Superior antifreeze performance
In cold areas, the circulation pipeline between the collector and the water tank is usually filled with antifreeze medium (such as propylene glycol solution) instead of water.
Avoid freezing and cracking: The freezing point of antifreeze is very low, and it will not freeze even in severe cold weather, which effectively solves the problem of freezing and cracking of solar water heater pipes in cold areas.
Indirect heat exchange: After the antifreeze medium is heated in the collector, it flows back to the heat exchanger in the indoor water tank, transfers the heat to the water in the water tank, and realizes heat exchange. The water itself does not enter the collector and the exposed circulation pipe.
4.Better anti-overheating performance
The system adopts a closed pressure-bearing design and is equipped with safety devices such as safety valves and expansion tanks, which can better withstand the high temperature of the system.
In summer, when the sunshine is strong and the water consumption is small, the system has a stronger ability to withstand high temperature and high pressure, and is relatively less likely to burst or generate a large amount of water vapor.
The indirect heat exchange design also reduces the risk of overheating and boiling the water in the water tank (although high temperature protection is still required).
5.Clean water quality and not easy to scale
Indirect heating: The antifreeze medium in the collector circulation loop is a closed cycle and is completely isolated from the domestic hot water (water in the water tank) used by users.
Reduce scale: Domestic hot water is only heated in the water tank and does not flow through the high-temperature collector, which greatly reduces the problem of scale formation inside the collector and keeps the water relatively clean.
Extend life: Reducing scale also improves the thermal efficiency of the collector and the service life of the system.
6.Easy to combine with auxiliary energy
The design of the pressure water tank makes it easier to integrate electric heating rods, gas heaters or other auxiliary heat sources.
Auxiliary heating is usually built directly into the water tank or realized through external equipment, providing stable hot water guarantee on rainy days or when solar energy is insufficient, and realizing all-weather hot water supply.
7.Long system life
The water tank is placed indoors or in a sheltered place to avoid the erosion of the water tank shell and insulation layer by long-term sun and rain, high temperature exposure and severe cold and freezing, which significantly extends the life of the water tank.
The collector (especially the flat plate collector) has a strong structure, strong resistance to wind, snow and hail, and a long life.
8.Good aesthetics:
The collector can be installed on the roof or exterior wall more flexibly, and it is easier to integrate with the building exterior design.
The bulky water tank is hidden indoors or inconspicuous locations (such as balcony corners, equipment platforms), does not occupy the roof space, does not affect the overall beauty of the building, and is especially suitable for residential areas with high requirements for building appearance.
9.Wide range of applications:
Especially suitable for high-rise and small high-rise apartments (large water tanks cannot be placed on the roof).
Suitable for cold areas (good antifreeze performance).
Suitable for users with high requirements for water pressure and hot water comfort.
Suitable for modern building integrated design.
10.Potential disadvantages to note
Higher initial cost: The system structure is more complex (requires circulation pump, heat exchanger, control system, antifreeze, etc.), and the installation is relatively difficult, so the initial investment is usually higher than that of compact solar water heaters.
Dependence on electricity: The forced circulation system requires the circulation pump to operate, so it needs continuous power supply. When the power is off, the circulation will stop (but the hot water already in the tank can still be used).
Maintenance requirements: There are more system components (pumps, controllers, sensors, valves), and theoretically there are slightly more potential failure points, which require regular inspection and maintenance (such as the status of antifreeze).
Finally, if you are interested in our product,you can contact us by email:don@ensunchina.com/ WhatsApp:8615005738065
