ПІДВИЩЕННЯ ЕФЕКТИВНОСТІ РОБОТИ ГЕЛІОУСТАНОВКИ В УМОВАХ ХМАРНОСТІ

Abstract

Purpose. The main objective of the research is to increase the solar efficiency by improving the design of the solar collector through the use of terrestrial radiation. Methodology. Studies are based on physical modeling of heat and mass transfer in the solar collector. Results. The design of the solar thermal collector has been improved, which allows reducing the negative impact of cloudiness on the solar installation due to the additional use of terrestrial radiation, which is taken from the battery. The battery is exposed to the sun and its substance is heated to a temperature higher than the ambient temperature. The application of the proposed design makes it possible to stabilize the operation of the installation by installing a collector above the battery after the Sun has closed with clouds. The results of physical modeling proved the effectiveness of the method of combining types of thermal radiation, the efficiency increased by 3 times. The results of the experiments are analyzed and the effectiveness of the improved design of the solar collector is revealed. It is promising to use this type of solar thermal collector in solar heating systems and hot water supply in conditions of variable solar radiation. The proposed method of using a solar collector with a battery is able to provide hot water supply, and significantly reduce the consumption of traditional fuel and energy resources, which in turn can reduce the negative impact on the environment. Scientific novelty. For the first time, earth energy was used in conjunction with solar energy. Existing models of solar collectors have a common drawback, this is a limited and unstable heat production, which is affected by the duration and intensity of solar irradiation. The proposed design solves the problem of reducing productivity in cloud cover. Practical relevance. Many years of experience in operating solar collectors prove that using solar energy can save about 70% of traditional natural resources. It is promising to use this type of solar thermal collector in solar heating systems and hot water for domestic purposes