## 1 Introduction
The analysis indicated that using a collector with a selective coating increased the system's efficiency and heat gain compared to using single- or double-glazed collectors. An increase in the heat exchanger efficiency significantly improved the overall system performance, while increasing the mass flow rate of the fluid reduced the chiller efficiency. The results showed that the main source of exergy losses in this system was the solar collector (which accounted for 84% of the total exergy losses), followed by the generator (8.3% of the total exergy losses). Increasing the inlet temperature to the generator led to a slight increase in cooling efficiency, but after stabilizing, it ultimately decreased. This also resulted in increased exergy losses in system components. Based on these findings, the authors noted that improving the heat exchanger efficiency reduced the exergy losses of the system and improved the cooling performance, while an increase in the mass flow rate led to a decrease in the efficiency of the system, contributing to higher exergy losses. In his article, [PERSON] [13] presented actions aimed at improving the performance of absorption cooling systems powered by solar energy. The author noted that the use of various types of waste energy led to a significant increase in the efficiency of the absorption cooling system. That article also highlighted the correlation between system performance and the increased latent heat of the working fluid. Attention was drawn to the beneficial effect of using iron oxide nanoparticles as a component of the refrigerant fluid. [PERSON] emphasized that under optimal operating temperatures for the generator, a constant pressure process demonstrated higher absorption cooling efficiency than a constant temperature process. [PERSON] [14] examined ways to optimize the operation of absorption chillers for cooling purposes, with the main requirement being the increase in exergy efficiency, which impacts both quantitative and qualitative indicators. The article stated that ways to improve system performance included changing the generator temperature, changing the condensation temperature, and consolidating changes in both the generator and condenser temperatures. For example, lowering the condenser temperature by 2.1 \({}^{\circ}\)C and increasing the generator temperature by 27.3 \({}^{\circ}\)C significantly increased the system performance indicators. In an article by [PERSON] and others [15], a thermoeconomic analysis of a solar-powered absorption cooling system integrated with different types of collectors was presented. The analysis found that the system performance factor increased with an increase in the source temperature and the evaporator temperature, while the exergy efficiency was proportional to the temperature of the water that supplied the generator and inversely proportional to the temperatures of the evaporator, absorber, and condenser. A solar absorption cooling system using evacuated tube collectors (ETC) was identified as the most economically favorable solution, with an exergy efficiency of 0.66. However, in terms of the efficiency of the solar-powered system, the use of parabolic trough collectors (PTC) turned out to be the most beneficial. [PERSON] and [PERSON] [16] conducted a thermodynamic analysis of absorption cooling systems. They demonstrated that choosing the right device parameters, such as the type of working fluid and the number of stages of the device, plays a crucial role in improving the efficiency of absorption cooling systems, which can be aided by the use of thermodynamic analyses (TDA). The article highlighted the optimal temperature ranges for generators based on the COP values of devices with a specific number of stages and configurations. [PERSON] and [PERSON] [17] compared the KPCC system (using the Kalina cycle with an NH\({}_{3}\)-H\({}_{2}\)O absorption chiller) and the KLACC system (using the Kalina cycle with a LiBr-H\({}_{2}\)O absorption chiller).