Utilization of Energy Storage System for Solar Absorption Power Cycle

Jamali, Ehsan and Ghaebi, Hadi (2017) Utilization of Energy Storage System for Solar Absorption Power Cycle. Masters thesis, University of Mohaghegh Ardabili.

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Abstract

Over the last few decades, due to global energy consumption growth and environmental isssues, utilization of solar energy as a clean, renewable and low temperature energy resource has increased and made it an interesting field for investigation by the researchers. On the other hand, absorption system has became one of the most common systems for generating refrigeration. This system can be used for power generating by making some changes in the structure of absorption refrigeration cycle. In this study, a thermodynamic analysis is performed on an absorption power cycle which is using the solution of water and lithium bromide as working fluid. The heat source of the proposed system is a combination of some solar collectors and an energy storage system which is used for storing thermal energy during the day and releasing the absorbed heat when there be no sun radiation. The mathematical modeling of the system is carried out in EES software, then according to the given parameters and assumptions in the solar collectors and phase change materials, a detailed parametric study on the system efficiency and its power generation is performed. The results reveal that in low temperature heat sources such as solar energy resources, the absorption power cycle in comparison to Rankine cycle, gives higher efficiency and output power.

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