Save in the long term thanks to solar energy - with solar thermal energy

Save in the long term thanks to solar energy - with solar thermal energy

Solar thermal energy is profitable and environmentally friendly. The purchase is subsidized by the state, the operating and maintenance costs are low.

The energy costs increase from year to year. Who does not think about saving opportunities in-house? Two important costs are heating and hot water. With the solar thermal can save a lot of money here. The cost of such a facility is within the limits, because the solar thermal is subsidized by the state.

Inexhaustible and environmentally friendly

What is it actually, solar thermal? Behind the term hides the heat from solar radiation. This is fed into the heating system and water heating. The big advantage: The sun is available as a free and virtually inexhaustible source of energy. In contrast, raw materials such as oil, natural gas and coal are becoming increasingly scarce and correspondingly more expensive. A thermal solar system is also environmentally friendly. In contrast to conventional hot water and heating systems, it does not produce harmful greenhouse gases.

Combining subsidized systems with existing systems

The individual elements of a solar thermal system can be combined well with an existing gas or oil boiler. If the heating system requires modernization, it is worthwhile to couple the new system with solar thermal elements. Such an investment is supported by the state with grants. When planning a solar thermal system, some structural conditions must be taken into account. In addition to the north-south orientation, the average solar radiation and the shadows cast by trees or neighboring buildings are of great importance.

The functional principle

The heart of a solar thermal system is the collector. He collects the energy of sunlight. It consists of a so-called absorber, which absorbs the incoming sun rays and converts them into heat. So that the energy can be transported, the absorber is filled with a heat transfer fluid. This usually consists of water and environmentally friendly antifreeze. The liquid circulates between the collector and the DHW cylinder, the domestic hot water generator.

The solar system is automatically controlled by a regulator. If the temperature at the collector is higher than the existing temperature in the DHW cylinder, the controller switches on. It starts the cycle and the absorbed energy is transported to the storage tank. Here, the warm water can then be taken and used.

Big savings potential

In view of rising energy prices, a solar thermal system pays off quickly - also due to the low maintenance costs and the low operating costs. In addition, the plants are always cheaper and their efficiency is steadily improving. At present, it can cover at least 30 percent of the heating demand in the house and even 50 to 65 percent of its hot water requirements. Whether the purchase is worthwhile can be calculated by a specialist.

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