PRIVATE HOUSEHOLD HEAT PUMP-BASED HEATING SYSTEM WITH PHOTOVOLTAIC PLANT

Abstract

Heat supply is the most energy-consuming industry in Ukraine. The reason for this is a large number of buildings built with a low level of thermal insulation, outdated thermal energy equipment and infrastructure, as well as a low level of implementation of heating systems based on renewable energy sources. Heat pumps are one of the alternatives to fossil fuel boilers for use in household heating systems. The problem of optimizing the operation of heating systems based on heat pumps is of practical importance, since its solution will potentially allow achieving several energy effects, including: reducing operating costs, as well as increasing the level of autonomy of the heating system in the case of providing electricity from an autonomous photovoltaic plant. The article presents the results of mathematical modeling of the heating system of a private house based on a heat pump, a thermal energy accumulator and a photovoltaic plant in the MATLAB/SIMULINK software environment. The model was created for the research purpose of the heating system of a private house with renewable energy sources through structural simulation modeling and conducting a comparative analysis of its management methods for three options (methods): "reactive", "economic" and "autonomous". It was found that the average annual operating costs with the "economic" method of management decreased by 22 % compared to the "reactive" method of management. When using the "autonomous" method of control, the annual maintenance cost of the system due to photogeneration increased by 48 %.