TY - JOUR
T1 - Studying the performance of a dehumidifier with adsorbent coated heat exchangers for tropical climate operations
AU - Oh, Seung Jin
AU - Ng, Kim Choon
AU - Thu, Kyaw
AU - Kum Ja, Marip
AU - Islam, Md Raisul
AU - Chun, Wongee
AU - Chua, Kian Jon Ernest
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: The authors gratefully acknowledge the generous funding from the National Research Foundation (NRF) Singapore under the Energy Innovation Research Programme (EIRP) Funding Scheme (R-265-00-543-279) managed on behalf by Building and Construction Authority (BCA).
PY - 2016/9/26
Y1 - 2016/9/26
N2 - A solid desiccant dehumidifier equipped with adsorbent coated heat exchangers has been developed and investigated experimentally. The main component of the solid desiccant dehumidifier included two heat exchangers that were coated with silica gel regular density (RD) type powder in order to increase water adsorption uptake by improving its heat transfer. A series of experiment were conducted to evaluate two key performance indices, namely, moisture removal capacity and thermal performance, under various operating conditions. Results revealed that the reduction of dehumidification process time by 50% can lead to significant improvement of the mean humidity ratio at outlet up to 9.3 g/kg. The maximum moisture removal was found to decrease from 14.8 to 13.2 g/kg with higher airflow rates arising from the reduced residence time of the process air. It was further observed that the water moisture removal was highly affected by inlet humidity ratio. In addition, marked improvement in thermal performance can be achieved by a lowered hot water regeneration temperature. Copyright © 2016 ASHRAE
AB - A solid desiccant dehumidifier equipped with adsorbent coated heat exchangers has been developed and investigated experimentally. The main component of the solid desiccant dehumidifier included two heat exchangers that were coated with silica gel regular density (RD) type powder in order to increase water adsorption uptake by improving its heat transfer. A series of experiment were conducted to evaluate two key performance indices, namely, moisture removal capacity and thermal performance, under various operating conditions. Results revealed that the reduction of dehumidification process time by 50% can lead to significant improvement of the mean humidity ratio at outlet up to 9.3 g/kg. The maximum moisture removal was found to decrease from 14.8 to 13.2 g/kg with higher airflow rates arising from the reduced residence time of the process air. It was further observed that the water moisture removal was highly affected by inlet humidity ratio. In addition, marked improvement in thermal performance can be achieved by a lowered hot water regeneration temperature. Copyright © 2016 ASHRAE
UR - http://hdl.handle.net/10754/622472
UR - http://www.tandfonline.com/doi/full/10.1080/23744731.2016.1218234
UR - http://www.scopus.com/inward/record.url?scp=84991030366&partnerID=8YFLogxK
U2 - 10.1080/23744731.2016.1218234
DO - 10.1080/23744731.2016.1218234
M3 - Article
SN - 2374-4731
VL - 23
SP - 127
EP - 135
JO - Science and Technology for the Built Environment
JF - Science and Technology for the Built Environment
IS - 1
ER -