ABSTRACT The paper introduces thermal buoyancy effects to experimental investigation of wind tunnel simulation on direct air-cooled condenser for a large power plant. In order to get thermal flow field of air-cooled tower, PIV experiments are carried out and recirculation ratio of each condition is calculated. Results show that the thermal flow field of the cooling tower has great influence on the recirculation under the cooling tower. Ameliorating the thermal flow field of the cooling tower can reduce the recirculation under the cooling tower and improve the efficiency of air-cooled condenser also.
Cite this paper
nullW. Zhao, Q. Wang and P. Liu, "The Experimental Investigation of Recirculation of Air-Cooled System for a Large Power Plant," Energy and Power Engineering, Vol. 2 No. 4, 2010, pp. 291-297. doi: 10.4236/epe.2010.24041.
 W. L. Zhao and P. Q. Liu, “The Reasons of Recirculation Produce and It’s Evaluate Criteria for Air-Cooed Power Pant,” Proceedings of Chinese Congress of Theoretical and Applied Mechanics in memory of the Golden Jubilee of CSTAM, Beijing, 20-22 August 2007, pp. 143.
W. L. Zhao and P. Q. Liu, “Experimental Researches of the Effect of Environmental Wind on Thermal Recirculation under the Tower of Direct Air Cooled System,” Journal of Power Engineering, Vol. 23, No. 3, May 2008, pp. 390-394.
P. Q. Liu, W. L. Zhao and Z. L. Xu, “Simulation and Experimental Study of the Wind Tunnel Thermal Effect of a Directly Air Cooled System in a Thermal Power Plant,” Journal of Thermal Energy and Power, Vol. 28, No. 3, June 2008, pp. 240-243.
Z. F. Gu and H. Li, “Wind Tunnel Simulation on Re-Circulation of Air-Cooled Condensers of a Power Plant,” Journal of Wind Engineering and Industrial Aerodynamics, 2005, pp. 509-520.
Z. F. Gu and X. R. Chen, “Wind Tunnel Simulation of Exhaust Recirculation in an Air-Cooling System at a Large Power Plant,” International Journal of Thermal Sciences, Vol. 46, No. 5, May 2007, pp. 308-317.
C. A. Salta and D. G. Kroger, “Effect of Inlet Flow Distortions on Fan Performance in Forced Draft Air-Cooled Heat Exchangers,” Heat Recovery Systems & CHP, Vol. 15, 1995, pp. 555-561.
M. P. van Staden, “Numerical Modelling of the Effects of Ambient Conditions on Large Power Station Air Cooled Steam Condensers,” American Society of Mechanical Engineers, Vol. 221, 1995, pp. 145-150.
V. Staden and L. Pretorius, “Simulation of Heat Exchange in Large Air Cooled Condensers, Heat Transfer,” Proceedings of 11th IHTC, Vol. 6, 1998, pp. 155-160.
C. Ziller, D. Schwarzkopf and R. Balzereit, “Recirculation, Interference and Plume Diffusion in Power Stations and the Effects on the Efficiency, Wind Engineering into 21st Century,” Proceedings of the 10th International Conference on Wind Engineering, A.A. Balkema, Copenhagen, 1999, pp. 819-824.
P. Q. Liu, H. S. Duan and W. L. Zhao, “Numerical Investigation of Hot Air Recirculation of Air-Cooled Condensers at a Large Power Plant,” Applied Thermal Engineering, Vol. 29, 2009, pp. 1927-1934.
W. L. Zhao, “Study on Thermal Flow Field Characteristics of Direct Air-Cooled System for a Large Powe Plant,” Ph.D. Thesis, School of Aeronautics Science and Engineering, University of BeiHang, Beijing, 2008.