# Simulation of a Solar-Assisted Air-Conditioning System Applied to a Remote School
## 1 Introduction
[17] presented the results of a 35-kW capacity solar thermal cooling system that began operation in 2018, which was evaluated during the summer cooling and winter heating periods. The average annual COP was in the range of 0.68 and 0.76, while the solar fraction for heating and cooling averaged 56.6 and 62.5%, respectively, generating electrical savings of 10,158 kWh annually. In another experimental study of thermosolar cooling, [PERSON] [18] implemented operational strategies to optimize the exergetic efficiency of the system, such as the best absorption chiller-heat source coupling and equipment control. [PERSON] et al. [19] tested a 239-kW-capacity chiller activated in hybrid manner with solar energy and gas. By characterizing their system under a wide range of operating conditions, they simulated it under a tropical climate scenario of the Asian region, showing good operating potential. [PERSON] et al. [20] performed a simulation and experimental validation of a five-ton solar absorption cooling system installed in Tehran, Iran. They analyzed different factors that affect the performance of the system and established the optimal sizes of the equipment to achieve a 28% increase in its performance. [PERSON] et al. [21] investigated the performance of a 23-kW solar absorption cooling system driven by a parabolic trough collector field for cooling a 102-m\({}^{2}\) meeting room. They attributed the low performance of the system to the fact that the pipes were too long and the heat loss was too high. One of the main tools for the analysis of thermosolar absorption systems is the TRNSYS software; a large number of simulation studies used it to determine the best operating conditions, sizing,and optimizations [22; 23; 24; 25; 26; 27], given the advantages of this software when analyzing the systems under conditions closer to reality. In a work related to the use of these systems in schools, [PERSON] et al. [6] presented modeling and simulation studies, as well as preliminary experimental results, of a solar-driven 30-kW LiBr-H\({}_{2}\)O system installed at a university in France. They performed a complete analysis of the thermal loads of the classrooms using the TRNSYS software during the periods from 8:00 to 12:00 a.m. and from 1:00 to 5:00 p.m., corresponding to the class schedule. [PERSON] and [PERSON] [28], using the TRNSYS software, analyzed the implementation of a 35-kW LiBr-H\({}_{2}\)O cooling system driven by solar thermal energy in the arid region of northern Iraq, seeking to reduce the consumption of fossil fuels and promote the use of renewables. In another similar study, [PERSON] et al. [29] simulated the use of renewable energy-saving technologies in the United Arab Emirates, including solar-thermal absorption cooling systems. Reductions of 19.35% in annual cooling energy use, and 7.2% reduction in total annual energy use were achieved. [PERSON] et al. [30] studied the implementation of absorption cooling equipment under different climatic conditions. They proposed new correlations between the solar hot water temperature and the cooling water temperature in order to avoid both crystallization and the reduction of the degassing zone below 6%. They concluded that, depending on the present climatic conditions, it is necessary to implement different operative strategies looking for greater efficiency of the system. Analyzing options to improve the efficiency of this type of system, [PERSON] and [PERSON] [31; 32] studied the incorporation of nanofluids into solar heating technologies. They found that the use of nanoparticles increased the exergetic efficiency of the collector by about 4% and the cooling output by about 0.84% on a daily basis. [PERSON] et al. [33] analyzed two thermal storage options for adsorption cooling systems using solar energy. Their results showed that energy storage using phase change materials was slightly more efficient than storage using water. Another option for the activation of absorption systems is hybrid photovoltaic/thermal (PV/T) technology. [PERSON] et al.