## 1 Introduction  
Conventional vapor-compression air conditioning systems consume over 40% of the electricity and produce 24% of greenhouse gas emissions in the residential sector [1]. Research on sustainable energy options for air conditioning applications are an important issue. Among the prospective renewable energy solutions, the solar absorption cooling system is a suitable alternative because in summer, the cooling load increases due to increased solar radiation, enabling the coupling of solar thermal devices and cooling technologies driven by heat [2]. Several reports have been published about absorption cooling cycles driven by thermal solar energy. [PERSON] et al. [3] analyzed a directly air-cooled absorber-condenser absorption chiller. This prototype used a H\({}_{2}\)O/LiBr mixture and vacuum flat-plate collectors to provide thermal energy. The chiller capacity was 4.5 kW and a 42.2 m\({}^{2}\) solar collector system was necessary. The temperature of the storage tank was between 107 and 116 \({}^{\circ}\)C, with collector efficiency of 0.27. The desorber temperature was between 94.5 and 105 \({}^{\circ}\)C, and the evaporator temperature ranged from 25 to 15.5 \({}^{\circ}\)C. [PERSON] et al. [4] evaluated the performance of an absorption chiller that used H\({}_{2}\)O/LiBr with a 35 kW cooling capacity. The system used heat pipe evacuated collectors with a total area of 72 m\({}^{2}\) and a gas backup system as the thermal source. The experimental results showed that the thermal efficiencies increased around 0.6 with solar irradiation values between 750 to 850 W/m\({}^{2}\). The average daily coefficient Of performance (COP) was 0.30, the maximum was 0.46 during summer, and the minimum was 0.11 registered during winter. [PERSON] et al. [5] simulated three absorption air conditioning designs with H\({}_{2}\)O/LiBr during 24-hour operation. Designs were based in different types of thermal energy storage. The simulation was programmed in Engineering Equation Solver (EES), and the operation temperatures were 84.6, 4.4, 38, and 36.2\({}^{\circ}\)C for the desorber, evaporator, condenser, and absorber, respectively. The thermodynamic analysis showed that the best alternative was integrating refrigerant storage with a solar absorption system due the collector size being calculated as 22.2 m\({}^{2}\). This was small compared to other designs; however, the maximum COP was 0.77. [PERSON] et al. [6] compared the results of the simulation of a solar absorption system with 250 kW cooling capacity, operating with H\({}_{2}\)O/LiCl and H\({}_{2}\)O/LiBr mixtures. The simulation was conducted in EES, and a flat plate collector field and three ambient temperatures (25, 30, and 35 \({}^{\circ}\)C) were considered. According to the results, the required area was between 587 and 689 m\({}^{2}\), the thermal efficiency was between 0.50 to 0.44, and COP was calculated as 0.83 to 0.85. [PERSON] et al. [7] used TRNSYS to simulate an air conditioning system with 6 kW of cooling capacity using H\({}_{2}\)O/LiBr. The simulation included 40 m\({}^{2}\) of evacuated glass tube solar collectors with a micro compound parabolic collector (CPC) reflector. The analysis showed an average thermal COP of 0.60 when the ambient temperature increased from 28 to 35 \({}^{\circ}\)C with a cooling capacity of 5.78 to 8.93 kW. The integration of solar thermal energy into an absorption system is restricted by the desorber temperature; this component separates part of the refrigerant fluid from the refrigerant/absorbent liquid mixture [8]. The conventional boiling desorption process requires a constant heat load for the desorber, and for absorption systems that use water as the refrigerant fluid, vacuum pressure is required to separate the refrigerant fluid at low temperatures. An alternative to boiling desorption is membrane distillation (MD). In MD, the volatile component can be separated (in the vapor phase) from an aqueous working mixture by direct diffusion, so this process can occur below the boiling point.