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Abstract
This article is devoted to the methods for increasing the efficiency of the multi-module solar collector system using as attachment to the boiler. To achieve the major aim of the study the mathematical model was proposed and comparative analysis of efficiency of the alternative heating system using of the multi-module solar collector system using as attachments to boilers, which correspond to the requirements of the energy saving technologies. A mathematical model of the heat exchange process in the system's elements was developed, taking into account the solar capabilities of the operating region. A methodology for calculating the efficiency of the multi-module solar collector system using as attachments to boilers was presented. The algorithm of numerical modelling of the heat exchange process in the system's elements taking into account the climate conditions was developed. The numerical modelling of thermal processes in the elements of the alternative heating system using of the multi-module solar collector system as attachments to boilers was carried out. The estimation methods for the energy efficiency of the proposed alternative heat supply schemes were offered. Factors influencing the thermal and economic efficiency of a combined alternative heat supply system using of the multi-module solar collector system as attachments to boilers were identified. Design schemes for interaction between the solar collectors’ attachments to the boilers were developed. The analysis of the results of numerical modelling of thermal processes in the alternative heating system was presented. The rational ways of increasing the efficiency of the alternative heating system with the account of climatic conditions were grounded. Results of simulation, conclusions and decisions for the practical application of the alternative heating system using of the multi-module solar collector system as attachments to boilers were developed. This methodology for rising the efficiency enables the calculation of the thermal efficiency coefficient, heat removal coefficient, and heat transfer coefficient, taking into account the design and operating conditions of the multi-module solar collector system as attachments to boilers. The developed toolkit enables the determination of optimal values for the mass flow rate of the coolant, taking into account the circuit designs and design features of the solar collectors. The significance of the obtained results consists in justification of conditions, which make it possible to use the multi-module solar collector system as attachments to boilers at the energy saving principles
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