Hydraulic analysis of heat pump´s heating circuit using mathematical model

The objectives of this paper is the analysis a hot water circuit of the heat pump in terms of hydraulics, and creating a adequate mathematical model for this analysis. Observed physical system consists of a heat pump´s condenser, of circulation pump, of pipe bundle of floor heating and water for heat transport. The created mathematical model consists of the system of nonlinear implicit and explicit algebraic equations. For solving the implicit nonlinear algebraic equations applied the iterative numerical procedure with Newton - Taylor linearization. The result is, application of the created mathematical model and applied numerical procedure and analyzed the behavior of the hot water circuit in terms of hydraulics. For the analysis, significant hydraulic system parameters are: mass flow rate, temperature difference of hot water, power of circulation pump, flowing water coefficients of resistance. Analysis includes examining the operation points of circulation pumps, depending on the coefficients of resistance.