System and method for improving the performance of desiccant dehumidification equipment for low-humidity applications

摘要

C:/Users/kll/AppData/Local/Temp/Amended divisional specification pages - 35252363.DOCX-27/06/2016 Dehumidifier apparatus of the solid desiccant type and including a desiccant wheel and wheel drive, a housing with internal baffles and air seals proximate to the wheel face to create plenums or sectors and prevent air from leaking between 5 adjacent sectors, to create three paths for air to pass through the wheel; the sectors being sequentially a reactivation sector to dry the desiccant to a low equilibrium relative humidity, a process sector to dry return air from the process and makeup air received from the outside air sector, and an outside air sector to dehumidify another airstream, to provide makeup air for the process sector and all the air for the 10 reactivation sector. FIG.7 - DRY PURGE CYCLE WITH RECIRCULATED AIR REACT IATON DESICCANT WHEEL HE TO OUTSIDE COOLING COIL (USUALLY) RECIRCULATED TO PROCESS AIR PROCESS 1 IR C PRESSURIZATION AIR C PRESSURIZATION I MAKEUP AIR OSA (TYPICALLY FROM OUTSIDE AIR) BED DRIVE ARRANGEMENT FIG.7(A) - DRY PURGE CYCLE WITH RECIRCULATED AIR AND ADDITIONAL PURGE SECTOR REACTIVATION HEAT INPUT DESICCANTWHEEL ADDITIONAL H 38 REACT.AIR TO OUTSIDE COOLING COIL (USUALLY) 17 12 7 12, C I7OPRCS RECIRCULATED AIR TO PROCESS - PROCESS PRESSURIZATION AIR PRESSURIZATION I MAKEUP AIR -S (TYPICALLY FROM OUTSIDE AIR) SECTOR c 1 - BED DRIVE ARRANGEMENT