Dehumidification performance analysis of counter and cross flow liquid desiccant dehumidifiers for a packaged liquid desiccant air conditioning unit

Title
Dehumidification performance analysis of counter and cross flow liquid desiccant dehumidifiers for a packaged liquid desiccant air conditioning unit
Other Titles
패키지형 제습 공조 유닛 구성을 위한 대향류 및 직교류형 액체식 제습기의 제습 성능 분석
Author
Cho, Hye-Jin
Alternative Author(s)
조혜진
Advisor(s)
정재원
Issue Date
2019-02
Publisher
한양대학교
Degree
Master
Abstract
In this research, dehumidification performances of two packed-bed liquid desiccant dehumidifiers having different air-to-liquid flow configurations
that is, the cross flow and the counter flow types, were compared via a series of experiments carried out in the environmental test chamber. As performance indices, dehumidification effectiveness and enthalpy effectiveness were measured in each experiment for both liquid desiccant dehumidifiers. In order to predict dehumidification performance of both liquid desiccant dehumidifiers in various operating conditions, empirical models returning the dehumidification effectiveness and enthalpy effectiveness of both counter flow and cross flow type dehumidifiers were also derived based on the experimental data. The empirical models were compared with existing models to validate the reliability of the proposed models. From the sensitivity analysis conducted by using the proposed empirical correlations, it was observed that the dehumidification performance of the counter flow type liquid desiccant dehumidifier was highly affected by the inlet air humidity ratio and the inlet temperature of the desiccant solution, while the performance of the cross flow type dehumidifier was relatively less affected by those operating parameters. Consequently, one may conclude that the cross flow type liquid desiccant dehumidifier would provide relatively stable dehumidification performance regardless of the humidity ratio of the entering process air and the temperature of the desiccant solution, while the counter flow type dehumidifier would show better dehumidification performance at the higher humidity ratio of the entering process air and at the lower temperature of inlet desiccant solution. However, the cross flow type dehumidifier may have limited dehumidification performance especially in the lower solution temperature and in the highly humid process air conditions.
URI
http://dcollection.hanyang.ac.kr/common/orgView/000000108916http://repository.hanyang.ac.kr/handle/20.500.11754/100139
Appears in Collections:
GRADUATE SCHOOL[S](대학원) > ARCHITECTURAL ENGINEERING(건축공학과) > Theses (Master)
Files in This Item:
There are no files associated with this item.
Export
RIS (EndNote)
XLS (Excel)
XML


qrcode

Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.

BROWSE