Skip to main content

There are two types of solar water heaters: non-pressure and high-pressure. A high-pressure or pressure solar water heater system has a pressure equal to tap water pressure. Low-pressure systems, on the other hand, have water in the tank that is under low pressure and equivalent to gravity. However, to determine which form of solar water heating system is ideal for you, you must first grasp the distinctions between these two systems.

Low-pressure or non-pressure solar water heaters

Non-pressure solar water heaters distinguishes by glass vacuum tubes that directly link to the water tank and are topped by a smaller storage tank. This solar panel is made comprised of a vacuum glass system and an insulated makeup storage tank. When the glass tubes are exposed to the tank, they fill with water and heat up. Low-pressure water heaters, on the other hand, provide several advantages.

The advantages of a low-pressure solar water heater.

Despite their simplicity, low-pressure solar water heaters outlast the main supply of solar geyser systems. They are tranquil since there are no moving components in the system, and they are lightweight.

This low-cost technology can heat water without the use of any external electricity. As a result, it is an environmentally benign method of water heating. They are incredibly effective and can increase the value of your property.

Drawbacks of a low-pressure solar water heater

Low-pressure solar water heaters no longer support due to contemporary advances in plumbing systems. In other words, unless put on a high height above the water exits, they are only useful when there is a low head of pressure. Furthermore, if used incorrectly, this system can cause severe overheating, and even if one glass tube breaks, you must turn off the entire solar heating system.

If the whole weight of the system is on the roof, it may require extra support. Furthermore, because it is a basic system, it is quite frail and does not stand out when mounted on the roof.

Pressure or high-pressure solar water heaters

High Pressure Solar Water Heater
High Pressure Solar Water Heater (source Sunpark Eco Energy Systems Co., Limited)

These enclosed solar water heaters have copper tubes that link indirectly to the water tank. The tank should be located near the heating unit or beneath the roof. High-pressure direct-pressure water heaters, on the other hand, have evacuated tubes and heat pipes. The evacuated tube receives solar energy and transforms it to heat energy, which you can then utilize to heat water. Within the system, the heating fluids and water do not combine.

Click here to read about the three forms of active solar energy: https://engineerinc.io/the-three-forms-of-active-solar-energy/

The advantages of using a high-pressure solar water heating system.

The benefit of high-pressure systems over low-pressure systems is that their water pressure is higher. While this method works well, it may occasionally use existing storage tanks. Furthermore, while this system is more resilient, it does not need an ‘obtrusive’ solar heating water tank on the roof, as do low-pressure systems.

The drawbacks of a high-pressure solar heating system.

The main drawbacks to this system are that it is slightly more expensive than low-pressure systems and that certain variants require power to run the pump and temperature differential controller. However, if you use photovoltaics, you can overcome this difficulty as well.

As a result of all of this comparison between low-pressure and high-pressure solar water heating systems, you can choose which system is ideal for your home. While we suggest that both systems are great, investing a little extra in high-pressure solar heaters may provide you with far more benefits than low-pressure systems.

Leave a Reply