## 1 Introduction  
Nowadays, people live more and more inseparable from air-conditioning systems, and adsorption cooling systems can be a good alternative to cut down the energy consumption used in cooling systems [1]. Adsorption refrigeration systems can use waste heat from industrial processes and solar energy as heat sources, reduce the consumption of electricity, and reduce the consumption of fossil energy [2; 3; 4]. These adsorption refrigeration systems which use industrial waste heat can also be used as cold sources to reduce fossil fuel consumption in many industrial buildings [5]. At present, the performance coefficient (COP) and specific cooling power (SCP) of the adsorption refrigeration systems are relatively low, which are 0.15-0.6 and 10-100, respectively, and the performance of adsorption refrigeration systems need to be improved [6; 7; 8]. Improving the adsorption properties of the adsorbent can increase both the COP and the SCP of the cooling system. One way to improve adsorbent performance is to impregnate the adsorbent with hygroscopic salt to form a composite adsorbent [9]. [PERSON] [10] studied the effects of calcium ion exchange on the adsorption properties of zeolite 13X and obtained an ideal COP of an adsorbent using the 13X/CaCl\({}_{2}\)-water pair of 0.78, compared with 0.54 for the zeolite 13X-water pairs. [PERSON] [11] presented a measurement device called the isochoric adsorption character measurement to measure the adsorption characteristics and this measurement device has a higher accuracy than the prevalent method. [PERSON] [12] conducted a study on the adsorption characteristics of the adsorption refrigeration working pairs using alkaline-Earth metal chlorides as adsorbents and ammonia as the refrigerant. The adsorbents of CaCl\({}_{2}\), SrCl\({}_{2}\), MgCl\({}_{2}\), and BaCl\({}_{2}\) were discussed. [PERSON] [13] tested the porosity on an alternative refrigerant, carbon dioxide, with several types of carbon, zeolite, and silica gel as adsorbents. [PERSON] [14] presented a computer model that evaluated the performance of lithium-chloride absorption refrigeration, and assessed its suitability for biomass waste heat, and simulation results showed an increase in COP with increased heat source temperatures. [PERSON] [15] carried out using a constant-pressure thermal gravimetrical apparatus to measure the apparent solid-side mass diffusivity of water vapor adsorbed in a regular-density silica gel, expressed as a function of temperature and moisture content. [PERSON] [16] performed a measurement of moisture uptake curves in silica gel-calcium composite adsorbents by using the thermal gravimetrical method and showed that the sorption rate was highest for non-impregnated microporous silica gel. [PERSON] [17] researched that the effect of regeneration temperature on adsorption equilibria and mass diffusivity of the zeolite 13X-water pair. [PERSON]'s [18] study focused on the experimentation of a significant scale prototypes using zeolite 13X/H\({}_{2}\)O as the reactive pair and addressed the thermal performances of a zeolite-based open sorption heat storage system to provide thermal energy for space heating needs. [PERSON] [19] conducted an open sorption process, developing a numerical model of the water vapor adsorption of binderless zeolite 13X beads. [PERSON] [20] studied an adsorption cooling system with a novel composite material (zeolite 13X/CaCl\({}_{2}\)) as the adsorbent and water as the adsorbate under various working conditions. A dynamic heat and mass transfer model based on the linear driving force (LDF) mode was established by [PERSON] [21]. He investigated the performance of the adsorption cooling module (16 mm in diameter and 1020 mm in length) with zeolite 13X and water as the adsorption working pair.