Experimental And Theoretical Analysis Of The Goswami Cycle Operating At Low Temperature Heat Sources

The Goswami cycle is a cycle that combines an ammonia-water vapor absorption cycle and a Rankine cycle for cooling and mechanical power purposes by using thermal heat sources such as solar energy or geothermal steam. In this paper, a theoretical investigation was conducted to determine the performan...

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Autores:
Demirkaya, Gökmen
Padilla Vasquez, Ricardo
Fontalvo Lascano, Armando Enrique
Bula Silvera, Antonio José
Goswami, D. Yogi
Tipo de recurso:
Article of journal
Fecha de publicación:
2018
Institución:
Corporación Universidad de la Costa
Repositorio:
REDICUC - Repositorio CUC
Idioma:
eng
OAI Identifier:
oai:repositorio.cuc.edu.co:11323/1197
Acceso en línea:
https://hdl.handle.net/11323/1197
https://doi.org/10.1115/1.4039376
https://repositorio.cuc.edu.co/
Palabra clave:
Ammonia-Water Mixture
Low-Temperature Cycle
Power And Cooling
Rights
openAccess
License
Atribución – No comercial – Compartir igual
Description
Summary:The Goswami cycle is a cycle that combines an ammonia-water vapor absorption cycle and a Rankine cycle for cooling and mechanical power purposes by using thermal heat sources such as solar energy or geothermal steam. In this paper, a theoretical investigation was conducted to determine the performance outputs of the cycle, namely, net mechanical power, cooling, effective first law efficiency and exergy efficiency, for a boiler and an absorber temperature of 85 °C and 35 °C, respectively, and different boiler pressures and ammonia-water concentrations. In addition, an experimental investigation was carried out to verify the predicted trends of theoretical analysis and evaluate the performance of a modified scroll expander. The theoretical analysis showed that maximum effective first law and exergy efficiencies were 7.2% and 45%, respectively. The experimental tests showed that the scroll expander reached a 30-40% of efficiency when boiler temperature was 85 °C and rectifier temperature was 55 °C. Finally, it was obtained that superheated inlet conditions improved the efficiency of the modified expander.