## 1 Introduction
[PERSON] [13] investigated the effect of large temperature gradients and serious nanoparticles, photothermal conversion efficiency on direct absorption solar collectors. [PERSON] [14] studied the development of a dynamic model of a 3 TR (Ton of Refrigeration) single-effect absorption cooling cycle that employs LiBr-water as an absorbent/refrigerant pair, coupled with an evacuated tube solar collector and a hot storage unit. [PERSON] [15] studied the effect of using solar plasma for the enhancement operation of solar assisted absorption cycles. [PERSON] [16] presented an applied experimental and numerical evaluation of a triple-state sorption solar cooling module. The performance of a LiCl-H\({}_{2}\)O based sorption module for cooling/heating systems with the integration of external energy storage has been evaluated. Special design for solar collectors was investigated by [PERSON] [16]. Related to thermo-economics, [PERSON] [17] studied the feasibility of solar assisted absorption heat pumps for space heating. In this study, single-effect LiBr-H\({}_{2}\)O and NH\({}_{3}\)-H\({}_{2}\)O absorption, and absorption compression-assisted heat pumps were analyzed for heating loads of 2 MW (Mega Watt). Using the geothermal hot springs as heat sources for refrigerant evaporation, the problem of freezing was prevented. The COP ranged between 1.4 and 1.6. [PERSON] et al. [18] studied the feasibility of a solar assisted absorption cooling system based on a new generation flat plate ETC integrated with a double-effect LiBr-H\({}_{2}\)O absorption chiller. The results of the experiment show that maximum collector efficiency is above 60% and average daily efficiency is about 40%, and they show that systems coupled with flat-plate ETC achieve a higher solar fraction (77%), in comparison with 66.3% for PTC (Parabolic Through Collector) collectors. [PERSON] and [PERSON] [19] performed energy and detailed economic analysis of the application of solar air conditioning for different buildings and weather conditions. According to their analysis, they consider that the use of vacuum tube collectors reduces the solar collector surface area of about 15% and 50% in comparison with flat solar collectors. According to the final report of the European Solar Combi+ project, the use of evacuated tube collectors allows for greater energy savings (between 15% and 30%) but the investment increases significantly [20]. [PERSON] et al. [21] simulated four configurations of solar-driven LiBr-H\({}_{2}\)O air-conditioning systems for heating and cooling purpose. Their simulation results revealed that the solar fraction of 71.8%and primary energy conservation of 54.51% could be achieved by the configuration that includes an absorption chiller with a vapor compression cycle as an assistance cooling system. [PERSON] et al. [22] analyzed the performance of an adsorption cycle under different climate zones in Italy. It was concluded that the performance parameters were influenced significantly by the design variables. They found that with the dry and wet cooler, the solar fraction could archive values of 81% and 50% at lower solar collector areas. In addition, it was found that the COP could reach 57% and 35% in the same collector arrangement. In recent years, research projects on solar refrigeration have been carried out to develop new equipment, reducing costs and stimulating integration into the building air conditioning market. [PERSON] et al. [23] carried out a transitional simulation model using the TRNSYS software. The building was 1600 m\({}^{2}\) building; the system included the vacuum tube collectors of 300 m\({}^{2}\) and a LiBr-H\({}_{2}\)O absorption chiller. It was found that a higher coefficient of performance (COP) was 0.80; optimum storage volume of 75 L/m\({}^{2}\) was determined when the chiller cooling capacity was 157.5 kW. [PERSON] et al. [24] simulated a solar air conditioning system for a domestic house using TRNSYS software.