Solar collectors
People are discussing the means to obtain and use alternative energy increasingly frequently. The construction of wind power plants is a rapidly growing area and alternative power resources are still highly sought after. People are gradually starting to think not only about their own welfare but how not to harm their environment. Therefore, there is another quite innovative invention, namely the solar collectors. These modern devices uses sun to collect energy which is then absorbed and used to heat water. 
We all know that the price of fossil fuel will increase; are you also tired of long heating seasons or the maintenance thereof? We are offering the solar collectors and starting saving: use thermal energy to heat water and for partial heating of the house and it will not cost you anything. The investment pays off quickly, since you save money that you would spend on fuel and also burn it for a shorter period of time.
Solar energy is free and inexhaustible.
The sun provides heat even on a cloudy day.
The use of solar energy has a positive effect on the environment, it also allows cutting heating, fuel-burning and maintenance costs.
From April to October, it generates enough energy to prepare hot water.
A myth: solar collectors are innefective in Lithuania
One can have some doubts about solar collectors since in Lithuania, it is frequently cloudy, cold and rainy…
However, the use of solar energy is promoted by the data of Joint Research Centre of the European Council (EC JRC): the annual amount of the solar energy that reaches Lithuania (the average of 1005 kWh/m²) is almost equal to the amount that reaches the territory of Germany (approx.1007 kWh/m²) and exceeds the rates of the Great Britain (approx. 964 kWh/m²), Belgium (975 kWh/m²) and the Netherlands (976 kWh/m²).
Therefore, we do not have any reason to think that it is ineffective to use technologies transforming the solar energy in our country, when it is done by countries the natural conditions of which are very similar to our own climate.
The system of solar collectors
The cheapest, simplest and most popular use of solar energy is employing solar collectors to prepare hot water.
When there is no sunlight, the boiler of the solar collector is heated by the electric heater or the boiler.
The entire process is controlled by the special controller which has gauges in the solar collectors and the boiler.
The operating principle of the solar collectors is very simple: the accumulated heat is transmitted by a special pump to the water heater. In summer, the temperature in it can reach 100° C, yet if the sunlight is insufficient to generate the required temperature, the system can start using an additional energy source.
Solar collectors is a good investment that pays off quickly and covers more than a half of the annual energy needs for warm water.
