Ramy amir (8 risultati)

Condizione: New.

Taschenbuch. Condizione: Neu. Feasibility of Cooling a Photovoltaic Fresnel System by Water Spraying | Ramy Amir (u. a.) | Taschenbuch | Englisch | 2021 | Scholars' Press | EAN 9786138955375 | Verantwortliche Person für die EU: preigu GmbH & Co. KG, Lengericher Landstr. 19, 49078 Osnabrück, mail[at]preigu[dot]de | Anbieter: preigu. …

Taschenbuch. Condizione: Neu. This item is printed on demand - it takes 3-4 days longer - Neuware -One of the main obstacles that face the operation of the Fresnel system is overheating due to excessive solar radiation and high ambient temperatures which affect the panel's efficiency and output energy. The objective of this study is to model mathematically a linear Fresnel system which is either cooled by tap water or chilled water, in order to determine the critical concentration ratio at which the Fresnel system yields the maximum output energy. The model is applied in case of a constant and variable solar irradiance and ambient temperature in Stuttgart and Cairo. The model is developed to account for cooling of the Fresnel system using water spraying or using chilled water. It is required to calculate the maximum net energy in both cases and compare it with the case of no cooling. The model is further used to find out the critical concentration ratio (CR) at which the maximum energy output from the system can occur. It was found that the critical concentration ratio is a function of the month, cooling by spraying tap water increases the critical CR, cooling of the PV panels using chilled water system is not feasible and the CR for Stuttgart is higher compared to Cairo. 112 pp. Englisch.…

Condizione: New. Dieser Artikel ist ein Print on Demand Artikel und wird nach Ihrer Bestellung fuer Sie gedruckt. Autor/Autorin: Amir RamyRamy Amir is a lecturer assistant and Ph.D. student since July 2018 in the field of renewable energy at the department of mechatronics at the German university in Cairo, Egypt. He started as a teaching assistant in 2014. He .…

Taschenbuch. Condizione: Neu. nach der Bestellung gedruckt Neuware - Printed after ordering - One of the main obstacles that face the operation of the Fresnel system is overheating due to excessive solar radiation and high ambient temperatures which affect the panel's efficiency and output energy. The objective of this study is to model mathematically a linear Fresnel system which is either cooled by tap water or chilled water, in order to determine the critical concentration ratio at which the Fresnel system yields the maximum output energy. The model is applied in case of a constant and variable solar irradiance and ambient temperature in Stuttgart and Cairo. The model is developed to account for cooling of the Fresnel system using water spraying or using chilled water. It is required to calculate the maximum net energy in both cases and compare it with the case of no cooling. The model is further used to find out the critical concentration ratio (CR) at which the maximum energy output from the system can occur. It was found that the critical concentration ratio is a function of the month, cooling by spraying tap water increases the critical CR, cooling of the PV panels using chilled water system is not feasible and the CR for Stuttgart is higher compared to Cairo. …

Condizione: New. Print on Demand.

Condizione: New. PRINT ON DEMAND.

Taschenbuch. Condizione: Neu. This item is printed on demand - Print on Demand Titel. Neuware -One of the main obstacles that face the operation of the Fresnel system is overheating due to excessive solar radiation and high ambient temperatures which affect the panel's efficiency and output energy. The objective of this study is to model mathematically a linear Fresnel system which is either cooled by tap water or chilled water, in order to determine the critical concentration ratio at which the Fresnel system yields the maximum output energy. The model is applied in case of a constant and variable solar irradiance and ambient temperature in Stuttgart and Cairo. The model is developed to account for cooling of the Fresnel system using water spraying or using chilled water. It is required to calculate the maximum net energy in both cases and compare it with the case of no cooling. The model is further used to find out the critical concentration ratio (CR) at which the maximum energy output from the system can occur. It was found that the critical concentration ratio is a function of the month, cooling by spraying tap water increases the critical CR, cooling of the PV panels using chilled water system is not feasible and the CR for Stuttgart is higher compared to Cairo.VDM Verlag, Dudweiler Landstraße 99, 66123 Saarbrücken 112 pp. Englisch. …