Theoretical study on a novel ammonia–water cogeneration system with adjustable cooling to power ratios

Zeting Yu, Jitian Han, Hai Liu and Hongxia Zhao

Applied Energy, 2014, vol. 122, issue C, 53-61

Abstract: A novel ammonia–water cogeneration system with adjustable cooling to power ratios is proposed and investigated. In the combined system, a modified Kalina subcycle and an ammonia absorption cooling subcycle are interconnected by mixers, splitters, absorbers and heat exchangers. The proposed system can adjust its cooling to power ratios from the separate mode without splitting/mixing processes in the two subcycles to the combined operation modes which can produce different ratios of cooling and power. Simulation analysis is conducted to investigate the effects of operation parameter on system performance. The results indicate that the combined system efficiency can reach the maximum values of 37.79% as SR1 (split ratio 1) is equal to 1. Compared with the separate system, the combined efficiency and COP values of the proposed system can increase by 6.6% and 100% with the same heat input, respectively. In addition, the cooling to power ratios of the proposed system can be adjusted in the range of 1.8–3.6 under the given operating conditions.

Keywords: Cogeneration; Ammonia–water mixtures; Absorption cooling subcycle; Kalina subcycle thermodynamic analysis; Adjustable cooling to power ratios (search for similar items in EconPapers)
Date: 2014
References: View references in EconPapers View complete reference list from CitEc
Citations: View citations in EconPapers (20)

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DOI: 10.1016/j.apenergy.2014.02.010

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