## 1 Introduction  
Energy consumption for heating, cooling, ventilation, and air conditioning corresponds to 35% of the energy consumption of the entire building [1]. Considering the fact that energy resources are decreasing day by day, the necessity for reducing this energy spent on heating and cooling indoor environments has emerged. In addition, devices used for heating and cooling have negative effects on the environment due to their emission values. In this direction, it is seen that the use of renewable energy sources in the world has increased in recent years and this trend is also applied to heating and cooling systems for both energy efficiency and environmental benefit [2,3]. One of the renewable energy source devices used for cooling is evaporative coolers. Evaporative coolers (EC) are environmentally friendly air conditioning systems with low energy consumption and cooling the incoming air based on the evaporation of water at every temperature. However, conventional ECs are more effective and efficient in hot and low humidity areas [4]. The most effective method is based on Dew-Point Cooling (DPC) for ECs that differ depending on heat exchanger structures, geometries air supply structures, and cooling strategies [5]. This process allows air to be cooled below its wet-bulb temperature and reach the dew-point temperature of the treated air. DPC allows for generating energy savings in comparison to the traditional EC in dry climates [6]. Theoretical information about DPC systems, modeling methods, performance studies, and DPC applications were gathered by [PERSON] et al. [7]. Readers can refer to this article for more detailed information. The advantages of DPCs in the fields of energy consumption, expansion of application area, and environmental protection are tried to be increased by combining them with different designs and cooling techniques. One of them is the use of desiccant cooling technology and ECs together. Desiccant cooling systems are heat-operated cooling units and can be used as an alternative to conventional vapor compression and absorption cooling systems [8; 9]. These systems, which are based on the operation of a rotary dehumidifier that dehumidifies the air inside, are combined with the cooling performance of ECs to increase the cooling performance in more humid environments [10]. The performances of the desiccant evaporative cooling system are investigated in many papers [11; 12; 13; 14; 15; 16] and they showed and analyzed the effects of system parameters on the thermal-comfort conditions, overall performance of the cooling system, and energy efficiency for different geometries, structures, and evaporative cooling techniques. Systems where DPCs are combined with desiccant cooling systems cause both the dehumidification performance of DPCs to increase and the cooling performance of desiccant cooling systems to increase. [PERSON] and [PERSON] [17] investigated energy saving and system performances for systems with direct, indirect, and dew-point evaporative coolers and liquid desiccant cooling systems. On the other hand, [PERSON] et al. [18] have developed a new cooler in which DPCs are used as pre- and post-coolers and dehumidification is provided by a desiccant wheel, and their performance is examined both numerically and experimentally. In addition to geometric and structural changes, another method of increasing the performance and energy efficiency of coolers in which DPC systems are used is developing controllers for coolers that take into account environmental and operational conditions. While the comfort of the environment desired to be conditioned with active control is provided faster, energy savings are also achieved by operating the cooler actuators more efficiently. There are many studies in the literature related to the control of conventional air conditioning systems [19; 20; 21; 22].