Thermodynamics and process studies on absorption cycle from the perspective of real solution with non-volatile solute

Yuhao Yi, Xiaoyun Xie, Hao Zhang and Yi Jiang

Energy, 2024, vol. 291, issue C

Abstract: All the existing theoretical models of absorption cycles have limitations. In order to solve this problem, based on the temperature lift factor model, further thermodynamics and process studies on the absorption cycle from the perspective of real solution with non-volatile solute are carried out in this paper. First, the basic absorption cycle model under the ideal condition is established based on the classical thermodynamics, and the thermodynamic validity and internal irreversibility of the cycle are theoretically studied. Then, the temperature relationship and the relationship between temperature grade and energy within the basic absorption cycle under the ideal condition are theoretically derived and studied, and the essential physical properties that the actual absorption cycle differing from existing theoretical models are further elucidated. In addition, the process study of the absorption cycle is further carried out, and the thermodynamic common characteristics of absorption cycles with different processes are summarized. Furthermore, the thermodynamic research of the absorption cycle under the actual working condition is carried out, and the irreversibility of the cycle under this condition is discussed. The results indicated that the discontinuity of internal parameters is the essential thermodynamic characteristics of the absorption cycle, which is different from the characteristics of the compression cycle. The study can help researchers to deepen understand the basic characteristics that should be paid attention to when studying the absorption cycle.

Keywords: Absorption cycle; Thermodynamic analysis; Real solution; Process analysis; Energy and temperature grade (search for similar items in EconPapers)
Date: 2024
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Citations: View citations in EconPapers (2)

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Persistent link: https://EconPapers.repec.org/RePEc:eee:energy:v:291:y:2024:i:c:s0360544224001270

DOI: 10.1016/j.energy.2024.130356

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