How to use solar energy to heat pool water

Who has a pool and can not even afford to heat it at the cost of increasing energy consumption, it is likely that he will begin to look at it with anticipated nostalgia when temperatures begin their descent into thermometers. However, there are clean alternatives available.

How to use solar energy to heat pool water

Taking advantage of solar energy to  heat the pool water  is not only one of them, but it is  “the most profitable use of solar energy”  in many climates, according to the   United States Department of Energy . Therefore, we tell you how these solar thermal energy systems work  , what typologies exist and what are the main components of solar kits for air conditioning of a pool’s water.

How to use solar energy to heat pool water

How to keep the water in a pool warm thanks to the sun.

In the same way that it allows to capture energy to illuminate a house, to feed a computer or to irrigate the ground, solar energy can be used to heat the pool water when the room temperature no longer encourages a bath. In fact, its potential for this domestic use is such that, depending on the size and type of the installation, it will keep the water between five and ten degrees above the ambient temperature.

To extend the bathing season without this translating into a greater demand for energy from non-renewable sources, the panels will be the fundamental piece. This applies both to systems that heat water directly, in which it circulates freely through the panel, as well as indirect solar installations. This modality, with the highest cost, is one of the most used, offering superior performance.

Solar kit to heat the pool water.

How to use solar energy to heat pool water

In general, the solar systems used for this purpose must incorporate at least the following elements:

  • Solar collectors.  In addition to capturing the sun’s energy, the water will circulate through them so as to be heated and return to the pool.
  • A bomb . It will be essential for water to circulate from the pool to the system.
  • Filters . With them you will ensure that the water that returns to the pool is free of debris.

How to calculate the size of the solar installation.

Here is one of the determining points to make good use of the sun’s energy to heat the water and to do it at an affordable cost. The reason is clear. The more panels, the greater the investment . However, falling short will not achieve the desired goal, so calculating the number of solar panels needed will be crucial.

One aspect that makes it difficult when deciding is that there is no exact formula. The dimension of the installation depends on so many aspects that generalizing is practically impossible. The climate in the area where you reside and the hours of exposure to sunlight in your home are two of the determinants. With this, the usual thing is that the dimension of the solar installation is the  equivalent of between 50% and 100% of the size of the pool  to be heated.

However, as commented, what may be worthwhile in Almeria will not be the same as that used in Vigo, so it will be necessary to fine tune this decision. Another important one will be  the type of solar installation that is chosen , which covers the collectors without coverage and those that do have it. While the first family stands out for its lower cost, the second does it for greater efficiency to capture heat. Again, the specific case of each individual will determine which system is more convenient.

Anyway, the truth is that these types of solutions are an option to take into account for the domestic use of clean energy. The savings that it entails, as well as its low maintenance cost, are some of the advantages of this alternative, which also allows us to move towards a lower dependence on energy from fossil fuels.

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