Heat and Mass Transfer Model of Horizontal Tubular Absorbers for LiBr/H2O Absorption Refrigeration

Abstract

This study delves into the absorption efficiency of a horizontal absorber using a LiBr-H2O solution. We developed a computationally fast and accurate two-dimensional model, which we validated against experimental data. The analysis focuses on key operational parameters such as solution inlet temperature, mass flow rate, and cooling water inlet temperature, revealing their intricate interplay and impact on absorption performance. Our findings highlight the substantial influence of cooling water temperature, showing a significant boost in absorption efficiency as the cooling water temperature decreases. Additionally, we explore the effects of solution mass flow rate, uncovering the delicate balance between increased heat transfer resistance and initial absorption efficiency at near the impingement region. This comprehensive study provides valuable insights into the dynamics of absorption systems, offering pathways to optimize design and operational strategies for enhanced performance.