Absorption Power and Cooling Combined Cycle with an Aqueous Salt Solution as a Working Fluid and a Technically Feasible Configuration

Vaclav Novotny, David J. Szucs, Jan Špale, Hung-Yin Tsai and Michal Kolovratnik
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Vaclav Novotny: Faculty of Mechanical Engineering, Czech Technical University in Prague, Technicka 4, 16607 Prague 6, Czech Republic
David J. Szucs: University Centre for Energy Efficient Buildings, Czech Technical University in Prague, Trinecka 1024, 27343 Bushehrad, Czech Republic
Jan Špale: Faculty of Mechanical Engineering, Czech Technical University in Prague, Technicka 4, 16607 Prague 6, Czech Republic
Hung-Yin Tsai: Department of Power Mechanical Engineering, National Tsing Hua University, No. 101, Kuang-Fu Road, Hsinchu 30013, Taiwan
Michal Kolovratnik: Faculty of Mechanical Engineering, Czech Technical University in Prague, Technicka 4, 16607 Prague 6, Czech Republic

Energies, 2021, vol. 14, issue 12, 1-26

Abstract: Combined systems for power production and thermally activated cooling have a high potential for improving the efficiency and utilisation of thermal systems. In this regard, various configurations have been proposed and are comprehensively reviewed. They are primarily based on absorption systems and the implementation of multiple levels of complexity and flexibility. The configuration of the absorption power and cooling combined cycle proposed herein has wide commercial applicability owing to its simplicity. The configuration of the components is not new. However, the utilisation of aqueous salt solutions, the comparison with ammonia chiller and with absorption power cycles, the focus on parameters that are important for real-life applications, and the comparison of the performances for constant heat input and waste heat recovery are novel. The proposed cycle is also compared with a system based on the organic Rankine cycle and vapour compression cycle. An investigation of its performance proves that the system is suitable for a given range of boundary conditions from a thermodynamic standpoint, as well as in terms of system complexity and technical feasibility. New possibilities with regard to added power production have the potential to improve the economics and promote the use of absorption chiller systems.

Keywords: absorption cycle; Kalina cycle; absorption power cycle; LiBr; combined power and cooling; absorption cooling; salt solution (search for similar items in EconPapers)
JEL-codes: Q Q0 Q4 Q40 Q41 Q42 Q43 Q47 Q48 Q49 (search for similar items in EconPapers)
Date: 2021
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (2)

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