Modelowanie dynamiki cieczowych kolektorów słonecznych

• Autorzy: Dziewa P. , Zima W.
• Konferencja: XI Forum Energetyków GRE 2008/Międzynarodowa Konferencja Naukowo-Techniczna(19-21.05.2008;Orle Gniazdo Szczyrk, Polska)
• Języki publikacji: PL

Abstrakty

EN

The paper presents a new one-dimensional mathematical model for simulating the transient processes which occur in the liquid flat-plate solar collectors. The proposed method considers the collector model as one with distributed parameters. In the suggested method one tube of the collector is taken into consideration. In this model the boundary conditions could be time-dependent. The proposed model is based on solving equation describing the energy conservation at the working medium side. The temperature of the separating wall is determined from the equation of transient heat conduction. The derived differential equations were solved using the implicit finite difference method of iterative character. All thermo-physical properties of the operating medium and the material of the separating wall could be computed in real time. The proposed model is suitable for collectors working in a parallel or serpentine tube arrangement. As an illustration of accuracy and effectiveness of the suggested method the computational verification was performed. It consists in comparing the results found using the presented method with results of available analytic solutions for transient operating conditions. Obtained conformity of results was very good.

Słowa kluczowe

PL

kolektory słoneczne cieczowe; energia słoneczna; bilans energii

EN

liquid flat-plate solar collectors; solar energy; energy balance

• Wydawca: Oficyna Wydawnicza Politechniki Opolskiej
• Czasopismo: Zeszyty Naukowe. Elektryka / Politechnika Opolska
• Rocznik: 2008
• Tom: Vol. 323, z. 60
• Strony: 111--112
• Opis fizyczny: Bibliogr. 6 poz., schem., wykr.

Twórcy

autor

Dziewa P.

autor

Zima W.

• Politechnika Krakowska, Instytut Aparatury Przemysłowej i Energetyki

Bibliografia

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• [3] BURCH J., CHRISTENSEN C., SALASOVICH J., THORNTON J.: Simulation of an unglazed collector system for domestic hot water and space heating and cooling, Solar Energy 77 (2004), 399-406.
• [4] ZUEVA G.A., MAGIERA J.: Mathematical model of heat transfer in a solar collector and its experimental validation, Theoretical Foundations of Chemical Engineering 35 (6) (2001), 604-608.
• [5] SEROV Ε.P., KOROLKOV B.P., Dynamics of steam generators (in Russian), Energia, Мoskva 1981.
• [6] GERALD C.F., WHEATLEY P.O.: Applied numerical analysis, California Polytechnic State University, Addison-Wesley Publishing Company, 1994.