![]() ![]() Solar heat is applied to regenerate the desiccant. The desiccant cycles are typically used with flat-plate solar collectors. ![]() ![]() An interesting feature of the desiccant cycle is that it is an open system, meaning that water (refrigerant) is discarded from the system via dehumidification process, and then new water is taken in during humidification phase. Both liquid or solid desiccant can be used: for example, silica gel, LiCl salt (solid) or glycol, LiCl solution (liquid). This cycle uses water in the direct contact with air as refrigerant. Do not continue to the next section until you can find the following on the chart. The following is a summary of the major elements on the chart. This is the second class of solar cooling systems, which are based on humidification-dehumidification process using a hygroscopic material (desiccant), which is capable of absorbing moisture from air. The Psychrometric Chart an Overview Before we proceed further in our study, let’s learn or refresh regarding the Psychrometric chart. The psychrometric charts help to understand how the solar desiccant cooling works. Website: Psychrometric Charts, Autodesk Education Community, URL: ![]()
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