TY - JOUR
T1 - Unsteady-state analysis of a counter-flow dew point evaporative cooling system
AU - Lin, J.
AU - Thu, K.
AU - Bui, T.D.
AU - Wang, R.Z.
AU - Ng, Kim Choon
AU - Kumja, M.
AU - Chua, K.J.
N1 - KAUST Repository Item: Exported on 2020-10-01
Acknowledgements: China Scholarship Council
PY - 2016/7/19
Y1 - 2016/7/19
N2 - Understanding the dynamic behavior of the dew point evaporative cooler is crucial in achieving efficient cooling for real applications. This paper details the development of a transient model for a counter-flow dew point evaporative cooling system. The transient model approaching steady conditions agreed well with the steady state model. Additionally, it is able to accurately predict the experimental data within 4.3% discrepancy. The transient responses of the cooling system were investigated under different inlet air conditions. Temporal temperature and humidity profiles were analyzed for different transient and step responses. The key findings from this study include: (1) the response trend and settling time is markedly dependent on the inlet air temperature, humidity and velocity; (2) the settling time of the transient response ranges from 50 s to 300 s when the system operates under different inlet conditions; and (3) the average transient wet bulb effectiveness (1.00–1.06) of the system is observed to be higher than the steady state wet bulb effectiveness (1.01) for our range of study. © 2016 Elsevier Ltd
AB - Understanding the dynamic behavior of the dew point evaporative cooler is crucial in achieving efficient cooling for real applications. This paper details the development of a transient model for a counter-flow dew point evaporative cooling system. The transient model approaching steady conditions agreed well with the steady state model. Additionally, it is able to accurately predict the experimental data within 4.3% discrepancy. The transient responses of the cooling system were investigated under different inlet air conditions. Temporal temperature and humidity profiles were analyzed for different transient and step responses. The key findings from this study include: (1) the response trend and settling time is markedly dependent on the inlet air temperature, humidity and velocity; (2) the settling time of the transient response ranges from 50 s to 300 s when the system operates under different inlet conditions; and (3) the average transient wet bulb effectiveness (1.00–1.06) of the system is observed to be higher than the steady state wet bulb effectiveness (1.01) for our range of study. © 2016 Elsevier Ltd
UR - http://hdl.handle.net/10754/621807
UR - https://linkinghub.elsevier.com/retrieve/pii/S0360544216309604
UR - http://www.scopus.com/inward/record.url?scp=84978374629&partnerID=8YFLogxK
U2 - 10.1016/j.energy.2016.07.036
DO - 10.1016/j.energy.2016.07.036
M3 - Article
SN - 0360-5442
VL - 113
SP - 172
EP - 185
JO - Energy
JF - Energy
ER -