The paper presents the use of a method called Equivalent Thermal Network used to formulate mathematical model suitable for SDHW system analyses. Composed algorithms make it possible to perform computer simulations either of weather conditions or system parameters and to determine their influence on the system thermal performance and thus can be used by solar system designers. Steady state analysis confirms that the model is correct and the transient analysis adds new aspects to the thermal performance of such systems. Comparisons with measurements taken on a real object prove the usefulness of the method particularly for local conditions.
Duffie J.A., Beckman J.A.: Solar Engineering of Thermal Processes. John Wiley and Sons. New York 1991.
Chochowski A.: Thermal state analysis for flat plate solar collectors. SGGW. Warszawa 1991 (in Polish).
Chochowski A., Wojcicka-Migasiuk D.: Equivalent network method in steady state analysis of hot water plants incorporating solar collectors in diaries abstract 3rd Int. Conference Physics of Agro and Food Products, Inst. Agrofizyki PAN, Lublin 1998, 24.