Performance assessment of a solar/gas driven NH3/LINO3 absorption cooling system for malls

This study aims to assess the performance of a solar/gas assisted absorption chiller using NH3/LiNO3 for air conditioning in malls at the environmental conditions of the city of Barranquilla, Colombia. The performance of an NH3/LiNO3 absorption chiller with a nominal capacity of 352 kW is assessed using natural gas and solar energy for driving of the system. The solar irradiation in the city selected, the cooling requirements in three selected shopping malls, and roof area available for evacuated solar collectors were parameter considered for the study as well. For the evaluation of the chiller, a thermodynamic model is developed to estimate the effects of the environmental variables on the operation of the absorption system to produce chilled water at 12 °C. The estimated cooling effect provided by conventional compression chillers is used as the cooling target to be covered by the absorption chillers. Results showed that the area available for solar collectors is the main limitation for the installation of solar/gas absorption systems in malls. The peak cooling effect target was totally covered in mall two considering two solar/gas assisted chillers and a solar collector area of 2210 m2. In mall one, 83% of the peak cooling load was provided by two chillers, while for mall three, only 35% of the peak cooling load was provided by one chiller given the limitations in the area available for solar collectors. The maximum COP and SCOP values of the chillers were up to 0.64 and 0.41, respectively.

• Autores: Amaris, Carlos; Rodríguez, Andrés; Sagastume, Alexis; Bourouis, Mahmoud
• Tipo de recurso: Part of book
• Fecha de publicación: 2023
• Institución: Corporación Universidad de la Costa
• Repositorio: REDICUC - Repositorio CUC
• Idioma: eng
• OAI Identifier: oai:repositorio.cuc.edu.co:11323/10359
• Acceso en línea: https://hdl.handle.net/11323/10359; https://repositorio.cuc.edu.co/
• Palabra clave: Absorption chillers; Solar cooling; Ammonia; Lithium nitrate; Malls; Natural gas
• Rights: openAccess
• License: Atribución-NoComercial 4.0 Internacional (CC BY-NC 4.0)