Numerical simulation of the operation of heat exchangers in solar heating systems
E.Kh. Kitaytseva, Cand. tech. Sci., Associate Professor, Department of Information Systems, Technologies and Automation in Construction;
D.A. Konstantinova, graduate Student, Department of Information Systems, Technologies and Automation in Construction FGBOU VO National Research Moscow State Construction University (NIU MGSU)
Abstract. In this study the mathematical model of heat exchanger is described. The model takes into account changes of heat transmission coefficient by the fluid temperature. The increasing water temperature calculation algorithm is described. The submitted method lets us to analyze long term temperature changes.
Key words: solar thermal systems, heat exchanger, numerical methods.