Abstract
Based on the Merkel method, a mathematical model for calculating the evaporation loss of natural draft counterflow wet cooling towers (NDWCTs) was established. Taking the NDWCTs of the representative 300 MW and 600 MW power plants as the experimental objects, the calculated values obtained by the mathematical method were in good agreement with field experiment. Then, the effect of thermal load on evaporation loss of NDWCT was analyzed. The results showed that with the thermal load of NDWCT increasing, the evaporation loss increased, while the rate of evaporation loss caused by per unit change in temperature decreased. When the thermal load is the same, the evaporation loss was basically equal no matter by changing the mass flowrate or the inlet water temperature.
Issue Section:
Research Papers
References
1.
Feeley,
T. J.
, III, Skone
, T. J.
, Stiegel
, G. J.
, Jr., McNemar
, A.
, Nemeth
, M.
, Schimmoller
, B.
, and Manfredo
, L.
, 2008
, “Water: A Critical Resource in the Thermoelectric Power Industry
,” Energy
, 33
(1
), pp. 1
–11
. 10.1016/j.energy.2007.08.0072.
Rahmati
, M.
, Alavi
, S. R.
, and Sedaghat
, A.
, 2016
, “Thermal Performance of Natural Draft Wet Cooling Towers Under Cross-Wind Conditions Based on Experimental Data and Regression Analysis
,” 2016 6th Conference on Thermal Power Plants (CTPP)
, Tehran, Iran
, Jan. 19–20
, pp. 1
–5
.3.
Owen
, M. T. F.
, and Kröger
, D. G.
, 2011
, “An Investigation of Air-Cooled Steam Condenser Performance Under Windy Conditions Using Computational Fluid Dynamics
,” ASME J. Eng. Gas Turbines Power
, 133
(6
), p. 064502
.4.
Yang
, L. J.
, Du
, X. Z.
, and Yang
, Y. P.
, 2011
, “Influences of Wind-Break Wall Configurations Upon Flow and Heat Transfer Characteristics of Air-Cooled Condensers in a Power Plant
,” Int. J. Therm. Sci.
, 50
(10
), pp. 2050
–2061
. 10.1016/j.ijthermalsci.2011.05.0045.
Zhang
, L.
, Zhang
, L.
, Zhang
, Q.
, Jiang
, K.
, Tie
, Y.
, and Wang
, S.
, 2018
, “Effects of the Second-Stage of Rotor With Single Abnormal Blade Angle on Rotating Stall of a Two-Stage Variable Pitch Axial Fan
,” Energies
, 11
(12
), p. 3293
. 10.3390/en111232936.
Zhang
, L.
, He
, R.
, Wang
, X.
, Zhang
, Q.
, and Wang
, S.
, 2019
, “Study on Static and Dynamic Characteristics of an Axial Fan With Abnormal Blade Under Rotating Stall Conditions
,” Energy
, 170
, pp. 305
–325
. 10.1016/j.energy.2018.12.1257.
Zhang
, L.
, and Engeda
, A.
, 2018
, “Numerical Simulation of Rotating Stall in a Two-Stage Axial Fan
,” Therm. Sci.
, 22
(Suppl. 2
), pp. 655
–663
. 10.2298/TSCI171025050Z8.
Platts
, 2005
, North American Energy Business Directory, World Electric Power Plants Database
, The McGraw-Hill Companies, Inc.
, New York
.9.
Lee
, U.
, Han
, J.
, Elgowainy
, A.
, and Wang
, M.
, 2018
, “Regional Water Consumption for Hydro and Thermal Electricity Generation in the United States
,” Appl. Energy
, 210
, pp. 661
–672
. 10.1016/j.apenergy.2017.05.02510.
Xia
, L.
, Li
, J.
, Ma
, W.
, Gurgenci
, H.
, Guan
, Z.
, and Wang
, P.
, 2017
, “Water Consumption Comparison Between a Natural Draft Wet Cooling Tower and a Natural Draft Hybrid Cooling Tower—An Annual Simulation for Luoyang Conditions
,” Heat Transfer Eng.
, 38
(11–12
), pp. 1034
–1043
. 10.1080/01457632.2016.121697511.
Naik
, B. K.
, and Muthukumar
, P.
, 2017
, “A Novel Approach for Performance Assessment of Mechanical Draft Wet Cooling Towers
,” Appl. Therm. Eng.
, 121
, pp. 14
–26
. 10.1016/j.applthermaleng.2017.04.04212.
Qureshi
, B. A.
, and Zubair
, S. M.
, 2006
, “Prediction of Evaporation Losses in Wet Cooling Towers
,” Heat Transfer Eng.
, 27
(9
), pp. 86
–92
. 10.1080/0145763060084637213.
Qureshi
, B. A.
, and Zubair
, S. M.
, 2007
, “Prediction of Evaporation Losses in Evaporative Fluid Coolers
,” Appl. Therm. Eng.
, 27
(2–3
), pp. 520
–527
. 10.1016/j.applthermaleng.2006.06.00814.
Alan
, B.
, Maulbetsch
, J.S.
, and DiFilippo
, M.N.
, 2005
, “Water Conservation Options for Wet-Cooled Power Plants
,” CEC/EPRI Advanced Cooling Strategies/Technologies Conference
, Sacramento, CA
, June 1–2
.15.
Hajidavalloo
, E.
, Shakeri
, R.
, and Mehrabian
, M. A.
, 2010
, “Thermal Performance of Cross Flow Cooling Towers in Variable Wet Bulb Temperature
,” Energy Convers. Manage.
, 51
(6
), pp. 1298
–1303
. 10.1016/j.enconman.2010.01.00516.
Reuter
, H. C. R.
, and Kröger
, D. G.
, 2012
, “Computational Models for Predicting Cooling Tower Fill Performance in Cross-Counterflow Configuration
,” ASME J. Therm. Sci. Eng. Appl.
, 4
(2
), p. 021003
.17.
Stabat
, P.
, and Marchio
, D.
, 2004
, “Simplified Model for Indirect-Contact Evaporative Cooling-Tower Behaviour
,” Appl. Energy
, 78
(4
), pp. 433
–451
. 10.1016/j.apenergy.2003.09.00418.
Rubio-Castro
, E.
, Serna-González
, M.
, Ponce-Ortega
, J. M.
, and Morales-Cabrera
, M. A.
, 2011
, “Optimization of Mechanical Draft Counter Flow Wet-Cooling Towers Using a Rigorous Model
,” Appl. Therm. Eng.
, 31
(16
), pp. 3615
–3628
. 10.1016/j.applthermaleng.2011.07.02919.
Kairouani
, L.
, Hassairi
, M.
, and Tarek
, Z.
, 2004
, “Performance of Cooling Tower in South of Tunisia
,” Build Environ.
, 39
(3
), pp. 351
–355
. 10.1016/j.buildenv.2003.08.01720.
Papaefthimiou
, V. D.
, Rogdakis
, E. D.
, Koronaki
, I. P.
, and Zannis
, T. C.
, 2012
, “Thermodynamic Study of the Effects of Ambient Air Conditions on the Thermal Performance Characteristics of a Closed Wet Cooling Tower
,” Appl. Therm. Eng.
, 33
, pp. 199
–207
. 10.1016/j.applthermaleng.2011.09.03521.
Merkel
, F.
, 1925
, Verdunstungskühlung
, VDI Verlag GmbH
, Berlin, Germany
.22.
Lewis
, W. K.
, 1962
, “The Evaporation of a Liquid Into a Gas
,” Int. J. Heat Mass Tran
, 5
(1–2
), pp. 109
–112
. 10.1016/0017-9310(62)90118-723.
Gao
, M.
, Zhang
, L.
, Wang
, N. N.
, Shi
, Y. T.
, and Sun
, F. Z.
, 2016
, “Influence of Non-Uniform Layout Fillings on Thermal Performance for Wet Cooling Tower
,” Appl. Therm. Eng.
, 93
, pp. 549
–555
. 10.1016/j.applthermaleng.2015.09.05424.
Gao
, M.
, Zou
, J.
, He
, S.
, and Sun
, F.
, 2018
, “Thermal Performance Analysis for High Level Water Collecting Wet Cooling Tower Under Crosswind Conditions
,” Appl. Therm. Eng.
, 136
, pp. 568
–575
. 10.1016/j.applthermaleng.2018.03.04325.
Zhao
, Z.
, 2001
, Cooling Tower
, Chinese Water Conservancy and Electric Power Publisher
, Beijing
.26.
Liu
, J.
, Jiang
, Y.
, Chong
, D.
, and Yan
, J.
, 2012
, “An Initial Analysis on the Energy-Efficient Performance of a Natural DRAFT Wet Cooling Tower With CaCl2 Solution for Power Plants
,” Appl. Therm. Eng.
, 48
, pp. 249
–255
. 10.1016/j.applthermaleng.2012.01.06627.
Li
, J. H.
, 2003
, Error Theory and Evaluation of Measurement Uncertainty
, China Metrology Press
, Beijing
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