Thermally regenerated desiccant air conditioner with indirect evaporative cooler

A system for cooling a stream of air wherein a first stream of air is dehumidified and then cooled in first and second indirect evaporative coolers for purposes of conditioning a second stream of air for introducing to a conditioned space, the system comprised of:

• (a) an adsorption body having a multiplicity of passages through which said first stream of air can flow for adsorbing moisture therefrom, the body capable of adsorption of moisture from said first stream of air and of regeneration by passing hot gases therethrough;
• (b) a first indirect evaporative cooler and second indirect evaporative cooler, the first indirect evaporative cooler in fluid communication with said adsorption body and said second indirect evaporative cooler in fluid communication with said first indirect evaporative cooler, said first and second indirect evaporative coolers having dry channels and wet channels separated by moisture-impervious walls wherein heat is extracted from said dry channels to said wet channels through said walls by passage of air through said wet channels,
• said dry channels of said first indirect evaporative cooler in fluid communication with said adsorption body to receive air therefrom, said dry channels capable of cooling said air received from said adsorption body to provide a cooled stream of air having a controlled level of humidity,
• said first indirect evaporative cooler capable of diverting a portion of said cooled stream air to said wet channels of said first indirect evaporative cooler for purposes of evaporating water in said wet channels thereinto to extract heat from said dry channels of said first indirect evaporative cooler,
• said second indirect evaporative cooler in fluid communication with said first indirect evaporative cooler to receive a second portion of said cooled stream of air exiting said dry channels of said first indirect evaporative cooler,
• said second portion directed to the wet channels of said second indirect evaporative cooler for purposes of cooling said dry channels of said second indirect evaporative cooler,
• said dry channels of said second indirect evaporative cooler adapted to receive a second stream of air comprised of outdoor air, return air from a conditioned space or a mixture thereof and cooling said second stream of air for introducing to the conditioned space;
• and
• (c) means for adjusting humidity of said second stream of air prior to cooling in said second indirect evaporative cooler.