Compare the efficiency of water heater Thai solar oil pipe and vacuum tube

Solar energy is becoming more and more popular, used for providing hot water without using electricity from the grid. Solar energy, also known as solar water heater, uses the principle of absorbing solar energy and converting it into hot water.

This is an option for many families who want to save on electricity costs while still being able to use natural hot water. On the market, there are solar oil tubes and vacuum tubes that are commonly used. Let's compare the similarities and differences of these two types through the article below.

Structure of solar oil tube and vacuum tube

- Similarities: Both types of solar energy have main parts: Insulation tank, base, heat collector.

- Differences: They differ in heat pipes.

The vacuum tube is composed of 2 layers of high-strength transparent glass with the air in the middle being vacuumed (the top of the tube is sealed). The outer layer allows light rays to pass through and is minimally reflected. The inside is covered with a special material that is able to absorb solar radiation.

The surface of the oil pipe is covered with 3 layers of copper, silver, and titanium to create a heat-absorbing layer.

Working principle of solar oil tube and vacuum tube

The working principle of solar energy is completely different from that of a vacuum tube. Let's find out in detail the working principle of each type below:

- For oil pipes:

The water will be flowing and heated directly in the insulator rather than moving through the energy tubes. Solar oil tube works on the principle of natural thermal convection, converting sunlight into heat energy. The device uses a vacuum-sealed glass tube, coated with 3 layers of copper, silver, and titanium to form a perfect heat-absorbing surface.

These glass tubes are used to store the oil inside. Oil has a low boiling point causing the tubes to heat up quickly, the heat from the tubes will be transferred to the heat conductor located at the top of the solar panel.

The oil pipe plugged directly into the insulation tank of the solar water heater will make the water in the insulated tank hot. This process continues until the water in the insulator reaches the maximum temperature.

- For vacuum tubes:

This is the first and most commonly used type of solar energy. Cold water from the insulation tank will be put into the vacuum tube to be heated here. After being heated, the water moves back to the insulator, and the cold water continues to circulate downwards. This process will continue until the water in the insulator reaches the desired temperature

The heat collection efficiency of this solar water heater is relatively high thanks to the principle of natural thermal convection, using the glass cage effect to convert light energy into heat.
 

The difference between solar oil tube and vacuum tube

- The solar energy cost of oil pipes is higher than that of vacuum tubes.

- The ability to keep heat oil pipe is higher than vacuum tube.

- The water heating time of the oil tube is faster than that of the vacuum tube

- The vacuum tube is easy to get dirty in the glass tube
 

Some advantages of solar oil and vacuum tubes

- Completely using solar energy, no electricity, so it's safe.

- Capable of keeping heat up to 96 hours.

- Heats water extremely quickly, saving waiting time.

- Capable of heating water after the sun is out.

- No dirt in the pipe.

- Works effectively even in winter, just need light sunlight.

- Using materials that conduct heat well, commonly 304 stainless steel.

Epilogue

Using solar oil or vacuum tubes depends on the purpose of use and the cost of each family. But in the end, using any type brings high efficiency, helping to save energy 100%. It will cost you a lot less than using electricity from the grid to heat water for daily use. The above are considerations to help you choose the most suitable type of solar energy. For more details, you can contact the supplier for more information about the product.