Abstract
According to experts’ forecasts, by 2040 the global demand for energy will increase by 37%, and renewable energy sources in the next 20 years will become the fastest growing segment of the world energy, their share in the next decade will grow by about one and a half times. Solar energy is the fastest growing industry among all non-conventional energy sources and is gaining the highest rates of development in comparison with other renewable energy sources. In this article, the authors provide an overview of the technologies that increase the efficiency and productivity of solar panels, only the investigated methods are described that can speed up the process of introducing solar energy instead of traditional. All the methods described can increase the efficiency of systems that are based on the use of the sun as the main source of energy. The authors presented and described the scheme of a solar-air thermal power plant, which will improve energy efficiency through the use of a regenerative air solar collector with increased heat transfer efficiency. Strengthening will be achieved through the use of hemispherical depressions on the surface that receives solar radiation. A schematic diagram is given and the principle of operation of such a solar collector is described in detail. A comparative calculation of the intensification of the solar collector with the use of depressions and without the use as modernization was carried out, on the basis of which a conclusion was made about the efficiency of using this type of solar collector and the economic effect from the application of this method. A description of the method for calculating the solar collector is given, thanks to which this development can be used and implemented in existing heating and hot water supply systems.
Highlights
Today, non-traditional and renewable energy sources are very popular all over the world
The coolant in the collector circulates through a harp-shaped pipe system, and since they are recessed by 50% into the sun-sensing plate, they will heat up, and the hemispherical recesses applied to the inner surface of the tubes will contribute to the intensification of heat transfer
Many countries are actively pursuing policies to increase the share of solar energy use
Summary
Non-traditional and renewable energy sources are very popular all over the world. Solar energy is gaining the highest rate of development in comparison with other types of renewable energy sources. This is due to a number of factors: environmental friendliness of the technology, high reliability of the solar battery, autonomy of power supply to the energy consumer, the presence of an endless source of energy, as well as the absence of noise during operation. China, the United States and the European Union are already actively studying the power of devices and mechanisms from solar energy. This means that in developed countries the issue of introducing solar energy instead of traditional energy sources is being studied, and the issues of modernizing and improving existing methods. The scientists of these countries are faced with the question of studying and researching various ways by which it is possible to increase the efficiency of solar power plants, and to increase their power and energy intensity
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