E humidity during the intended zone was 60 RH. The energy-saving ratio decreased with an increase in RH on the made zone. Therefore, this hybrid process was preferred in subtropical areas this kind of as Hong Kong in which latent load is substantial. Khalid et al. [79] developed a hybrid SADDCS with two indirect evaporative coolers in place of direct evaporative coolers in Karachi, Pakistan. The indirect ECs had been placed to ensure one was ahead of the desiccant wheel, to precool the provide air, as well as the other was amongst the heat exchanger as well as cooling coil of VCRS. Because of incredibly higher latent and wise heat loads in Karachi, the hybrid system alone couldn’t give the air at comfort requirements and an auxiliary VCRS was needed. The indirect ECs saved power by 15 , resulting from lessen in regeneration temperature. Hurdogan et al. [80] investigated a hybrid SADDCS, during which three parallel operating air groups had been current, as Moveltipril Angiotensin-converting Enzyme (ACE) proven in Figure ten. The system was supplied with a hundred fresh air as process air, ambient air was regeneration air, and the return air was utilized for your recovery of heat from method air just before it’s exhausted outside. The system made use of 4 heat exchangers for your recovery of heat in the regeneration air and also to attain reduced approach air temperature. The key aim from the investigation, carried out the two experimentally and by simulation, was to determine the efficiency of solar power utilization. As per the Cholesteryl sulfate Technical Information atmospheric dry bulb temperature and solar radiation in Adana,Processes 2021, 9,13 ofTurkey, the regeneration temperature was enhanced by 57 C, SF in regeneration heat was 4540 and COPTot,HS attained was among 50 and 120 .Figure ten. Schematic diagram of Hybrid SDEC and VCRS.La et al. [81] worked with an air-conditioning program consisting of the two-stage hybrid desiccant air-conditioning unit and vapor-compression refrigeration method in parallel, in conjunction with a flat-plate solar collector, as shown in Figure 11. Here, the provide air consisted of two streams, 1 from TSDCS as dehumidified air together with other from VCRS as cooled air. As a result, the latent heat load was dealt with through the solar-powered TSDCS plus the wise heat load was handled from the traditional VCRS. The experimental investigation of this process, powered by 72 m2 solar collector, was carried out at neighborhood Chinese summer time disorders. The intensity of solar radiant varied from 122.two W/m2 to 539.9 W/m2 along with the regular efficiency of the solar collector was 0.32, when the temperature and humidity ratio of atmospheric air have been 34.six C and 21.54 g/kg, respectively. The results showed that the solar TSDCS could accomplish COPTh and COPEl of one.24 and 11.48, correspondingly, with an common cooling capability of ten.9 kW. Inside the integrated hybrid program, 35.seven in the output was because of the solar TSDCS unit, as well as the COPEl of your complete system was four.41, which was 35 larger than VCRS.Figure 11. Schematic diagram of Solar hybrid desiccant air-conditioning process.Jose et al. [82] investigated the functionality of a hybrid SADDCS for conditioning a room which has a radiant floor technique, as proven in Figure 12. This method was modelled in TRNSYS sixteen, as well as overall performance with the system was examined assuming that the radiant floor while in the area stored the floor temperature at two C above that with the moist bulb temperature of the conditioned room, and the hybrid system was capable of handling latent and sensible loads. The functionality was carried out beneath two weather conditions, both in sizzling weather, but one particular with humid air and also the othe.
