TY - JOUR
T1 - Composite fouling characteristics of CaCO3 and CaSO4 in plate heat exchangers at various operating and geometric conditions
AU - Song, Kang Sub
AU - Lim, Junyub
AU - Yun, Sungho
AU - Kim, Dongwoo
AU - Kim, Yongchan
N1 - Funding Information:
This work was supported by the Industrial Core Technology Development Program (No. 10049090) of the Korean Evaluation Institute of Industrial Technology (KEIT) funded by the Ministry of Trade, Industry, and Energy, of the Korean Government.
Funding Information:
This work was supported by the Industrial Core Technology Development Program (No. 10049090 ) of the Korean Evaluation Institute of Industrial Technology (KEIT) funded by the Ministry of Trade, Industry, and Energy, of the Korean Government .
Publisher Copyright:
© 2019 Elsevier Ltd
PY - 2019/6
Y1 - 2019/6
N2 - In a water heating system, such as a district heating and hot water supply system, the composite fouling of CaCO3 and CaSO4 characterizes the actual usage environment. In this study, the composite fouling characteristics of CaCO3 and CaSO4 in plate heat exchangers were measured and analyzed at various concentrations, flow velocities, temperatures, and chevron angles. Moreover, based on the measured data, empirical correlations for the fouling resistance, fouling period, and pressure drop ratio at an asymptotic state, are developed as a function of concentration, Re, temperature, and chevron angle. The correlations for the fouling resistance, fouling period, and pressure drop ratio at the asymptotic state yield satisfactory predictions with mean absolute errors of 7.1%, 4.6%, and 2.0%, respectively. In addition, the sensitivities of the operating and geometrical parameters on the composite fouling characteristics are analyzed using modified regression coefficients.
AB - In a water heating system, such as a district heating and hot water supply system, the composite fouling of CaCO3 and CaSO4 characterizes the actual usage environment. In this study, the composite fouling characteristics of CaCO3 and CaSO4 in plate heat exchangers were measured and analyzed at various concentrations, flow velocities, temperatures, and chevron angles. Moreover, based on the measured data, empirical correlations for the fouling resistance, fouling period, and pressure drop ratio at an asymptotic state, are developed as a function of concentration, Re, temperature, and chevron angle. The correlations for the fouling resistance, fouling period, and pressure drop ratio at the asymptotic state yield satisfactory predictions with mean absolute errors of 7.1%, 4.6%, and 2.0%, respectively. In addition, the sensitivities of the operating and geometrical parameters on the composite fouling characteristics are analyzed using modified regression coefficients.
KW - Asymptotic fouling period
KW - Asymptotic fouling resistance
KW - Asymptotic pressure drop ratio
KW - Composite fouling (CaCO/CaSO)
KW - Plate heat exchanger
UR - http://www.scopus.com/inward/record.url?scp=85062702481&partnerID=8YFLogxK
U2 - 10.1016/j.ijheatmasstransfer.2019.03.032
DO - 10.1016/j.ijheatmasstransfer.2019.03.032
M3 - Article
AN - SCOPUS:85062702481
SN - 0017-9310
VL - 136
SP - 555
EP - 562
JO - International Journal of Heat and Mass Transfer
JF - International Journal of Heat and Mass Transfer
ER -
