Parametric study and thermal sensitivity analysis of a triple effect absorption refrigeration system

SAKA K., Orhan M. F.

Case Studies in Thermal Engineering, vol.69, 2025 (SCI-Expanded) identifier

  • Publication Type: Article / Article
  • Volume: 69
  • Publication Date: 2025
  • Doi Number: 10.1016/j.csite.2025.106030
  • Journal Name: Case Studies in Thermal Engineering
  • Journal Indexes: Science Citation Index Expanded (SCI-EXPANDED), Scopus, Compendex, INSPEC, Directory of Open Access Journals
  • Keywords: Energy analysis, Exergy, Internal condensers, Series flow, Triple effect absorption refrigeration system
  • Bursa Uludag University Affiliated: Yes

Abstract

Absorption refrigeration systems represent an efficient means of cooling utilizing waste heat, with triple-effect absorption refrigeration systems outperforming their double and single-effect counterparts in terms of efficiency. This study conducts energy and exergy analyses on a triple-effect absorption refrigeration system, focusing on internal heat balance and thermal sensitivity to maximize efficiency. The analysis pinpointed the most sensitive thermal sensitivity areas within the system, highlighting the high-pressure condenser (HPC) outlet and medium-pressure condenser (MPC) outlet as critical points. Notably, increasing the temperatures of HPC and MPC leads to enhanced COP and ECOP, with a mere 5 K rise in HPC exit temperature resulting in a remarkable 57 % boost in system performance. Similarly, elevating the MPC operating temperature by 5 K yields a significant 34 % improvement in COP value.