Performance Test of Low Temperature Regeneration Polymeric Desiccant Rotor

고분자 제습로터의 저온재생 성능시험

  • Lee, Jin-Kyo (Graduate School of Mechanical and Information Engineering, University of Seoul) ;
  • Lee, Dae-Young (Energy Mechanics Research Center, KIST) ;
  • Oh, Myung-Do (Department of Mechanical and Information Engineering, University of Seoul)
  • 이진교 (서울시립대학교 대학원) ;
  • 이대영 (한국과학기술연구원 에너지 메카닉스 연구센터) ;
  • 오명도 (서울시립대학교 기계공학과)
  • Published : 2009.06.25

Abstract

The polymeric desiccant rotor is made from the super absorbent polymer by ion modification. The moisture sorption capacity of the super desiccant polymer(SDP) is 4 to 5 times larger than those of common desiccant meterials such as silica gel or zeolite. It is also known that SDP can be regenerated even at the relatively low temperature. To fabricate the desiccant rotor, firstly the SDP was laminated by coating the SDP on polyethylene sheet. Then corrugated and rolled up into a rotor. The diameter, the depth, the dimensions of the corrugated channel, etc. were pre-determined from numerical simulation on the heat and mass transfer in the desiccant rotor. The dehumidification performance was tested in a climate chamber. The relevant tests were carried out at the process air inlet temperature of $32^{\circ}C$, the regeneration air inlet temperature of $60^{\circ}C$ and the inlet dew-point temperature of both the process air and the regeneration air of $18.5^{\circ}C$, when the rotation period is long, the moisture sorption is not effective. In the desiccant rotor developed in this study, the optimum rotation period is found about 350s at the regeneration temperature of $60^{\circ}C$. It was found from further experiments that the optimum rotation tends to decreases as the regeneration temperature increases. Meanwhile, the outlet temperature of the process air deceases monotonically as the rotation period increases.

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