Hot water is essential in every home or office facility. Currently, there are many ways to heat it. You don't need a central heating furnace for this. The water can also be heated by photovoltaic panels and solar collectors. Which solution works better? Are these installations profitable and provide enough power to heat water also in winter? We explain.
Check out solar water heating sets at the Onninen wholesaler
Is it better to heat water with photovoltaics or solar collectors?
Both the connection of photovoltaic panels and the installation of collectors allow for heating domestic water, and thus obtaining heat throughout the house. Wanting to choose an installation that will operate effectively and at the same time allow for the greatest possible energy savings, many people wonder which of these solutions will be better. More and more often, the choice falls on photovoltaics. Why?
First of all, it is about their high efficiency, which allows you to heat the boiler also in the autumn and winter. Photovoltaics do not need perfect weather to generate electricity. Thus, it ensures water heating and warmth all year round. In the case of solar collectors, the situation is different. This type of installation requires virtually cloudless weather to operate effectively. This means that heating domestic water in the autumn and winter in our climate zone may be a problem.
Its failure-free operation may also encourage you to purchase and connect a photovoltaic set. In this respect, they have a huge advantage over us collectors. The panels themselves are characterized by a very simple design, if only because they have no moving parts and too many electronics. Collectors, on the other hand, are prone to failure. These structures are more complex and often require a separate power supply from the network. Therefore, they do not guarantee efficient operation for many years. For this reason, to power heating devices, such as: heating mats, as well as devices used to heat water, such as electric boilers, photovoltaic sets work much better. They are able to provide electricity regardless of the weather and ensure trouble-free operation for many years.
How many solar panels should there be to heat the boiler?
If you want to be able to count on hot water regardless of the season and the weather outside, it is worth investing in a complete photovoltaic set. It consists of all the necessary products for heating it, as well as a thermostat that allows it to maintain a suitable temperature. The main element are, of course, the panels.
Their number must be adjusted to the boiler's power supply. Otherwise, the heaters will not be able to work effectively and the water will not be warm enough. The system should consist of 2 to 8 panels. Typically, to use hot water in the shower or for cooking, sets consisting of four panels are installed. Their power is usually 2-4 kWp. In the case of summer houses or a family of two, the demand for hot water can be provided by even two panels.
For a larger house where a larger boiler is needed, you should consider having more panels. Interestingly, there are sets available on the market whose converter allows you to operate two devices. This is an ideal solution for buildings such as terraced houses. Instead of connecting two boilers, you can also use one socket for other purposes, e.g. underfloor heating, which is a much more interesting solution than standard radiators.
Is it profitable to install solar panels for hot water?
When thinking about panels, many customers wonder whether it is a profitable solution. However, they should have no doubts about this. In fact, purchasing the installation is quite a large expense. Depending on the number of modules and their power, the cost ranges from several to several thousand zlotys. However, using solar energy to heat water allows you to significantly save on electricity and gas bills, which in recent years have begun to grow even faster than before. A solar water heating set is therefore the maximum benefit and a long-term one at that. The efficiency of typical micro-installations is approximately 25 years.
Solar water heating sets at the Onninen wholesaler
The Onninen wholesaler offers comprehensive solutions that will allow you to provide hot water to the building at any time of the day, regardless of weather conditions. These include:
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Galmet PREMIUM LARGE AL solar water heating set (2XKSG 27 GT, 300L skay exchanger) by Galmet - a 300L solar water heating set , sufficient to meet the needs of a 3-5-person family. It includes, among others: two flat collectors, as well as a control module, an exchanger and an electronic 2-way GT pump group. The solutions available from this manufacturer in the Onninen wholesaler also include a 200L solar water heating set and sets with exchangers with a capacity of 250 and 400 liters or combined tanks with a capacity of 500/160 liters. - De Dietrich Inisol Uno SLIM 3K-7.5/BSL400N solar water heating set from De Dietrich - the tank capacity in this set is up to 400 liters. The perfect solution for a large household. To minimize heat losses, the tank has effective thermal insulation.
- Immergas IMMERSOLE SUPER 2 x 2.0 + 200 solar water heating set by Immergas - it is distinguished by an enameled steel tank with a capacity of 200 liters. It is able to meet the hot water needs of a 2- or 3-person family. This set is also available in versions with more panels and higher power collectors. For a family of 3-5 people, a better choice will be a set with two 2.6 V2 flat-plate collectors and a larger IMMERSOLE SUPER 2 x 2.6 + 300 tank.
Check out solar water heating sets at the Onninen wholesaler