Keywords: refrigeration cycle, solar absorption, sub-structure, hierarchical decomposition, endoreversibility, optimisation, conceptual design, optimal design, Lagrange multipliers, performance evaluation
Conceptual and functional study of a solar absorption refrigeration cycle
The paper presents an optimised conceptual design approach. It deals with the analysis of the solar absorption refrigerator's performances. Hierarchical decomposition and endoreversibility principles of technical and energetic systems are used. Optimisation is carried out according to the Lagrange multipliers method. The general optimal performances of the cycle are coupled into a derived set of equations. The functional and conceptual characteristics are studied and the effects of the external sources temperatures on both the performances and the functional and conceptual characteristics are highlighted. This approach could be useful all time when we have to handle with a great number of variables.