Experimental studies on mist/steam cooling in a heated horizontal tube have been performed. Wall temperature distributions have been measured under various main steam flow rates, droplet mass ratios, and wall heat fluxes. Generally, the heat transfer performance of steam can be significantly improved by adding mist into the main flow. An average enhancement of 100 percent with the highest local heat transfer enhancement of 200 percent is achieved with 5 percent mist. When the test section is mildly heated, an interesting wall temperature distribution is observed: The wall temperature increases first, then decreases, and finally increases again. A three-stage heat transfer model with transition boiling, unstable liquid fragment evaporation, and dry-wall mist cooling has been proposed and has shown some success in predicting the wall temperature of the mist/steam flow. The PDPA measurements have facilitated better understanding and interpreting of the droplet dynamics and heat transfer mechanisms. Furthermore, this study has shed light on how to generate appropriate droplet sizes to achieve effective droplet transportation, and has shown that it is promising to extend present results to a higher temperature and higher pressure environment. [S0889-504X(00)02502-2]
Skip Nav Destination
Article navigation
April 2000
Technical Papers
Mist/Steam Cooling in a Heated Horizontal Tube—Part 2: Results and Modeling
Tao Guo,
Tao Guo
Department of Mechanical Engineering, Clemson University, Clemson, SC 29634
11
Search for other works by this author on:
Ting Wang,
Ting Wang
Department of Mechanical Engineering, Clemson University, Clemson, SC 29634
22
Search for other works by this author on:
J. Leo Gaddis
J. Leo Gaddis
Department of Mechanical Engineering, Clemson University, Clemson, SC 29634
Search for other works by this author on:
Tao Guo
11
Department of Mechanical Engineering, Clemson University, Clemson, SC 29634
Ting Wang
22
Department of Mechanical Engineering, Clemson University, Clemson, SC 29634
J. Leo Gaddis
Department of Mechanical Engineering, Clemson University, Clemson, SC 29634
Contributed by the International Gas Turbine Institute and presented at the 44th International Gas Turbine and Aeroengine Congress and Exhibition, Indianapolis, Indiana, June 7–10, 1999. Manuscript received by the International Gas Turbine Institute February 1999. Paper No. 99-GT-145. Review Chair: D. C. Wisler.
J. Turbomach. Apr 2000, 122(2): 366-374 (9 pages)
Published Online: February 1, 1999
Article history
Received:
February 1, 1999
Citation
Guo, T., Wang, T., and Gaddis, J. L. (February 1, 1999). "Mist/Steam Cooling in a Heated Horizontal Tube—Part 2: Results and Modeling ." ASME. J. Turbomach. April 2000; 122(2): 366–374. https://doi.org/10.1115/1.555451
Download citation file:
Get Email Alerts
Related Articles
Mist/Steam Cooling in a Heated Horizontal Tube—Part 1: Experimental System
J. Turbomach (April,2000)
Mist/Steam Heat Transfer in Confined Slot Jet Impingement
J. Turbomach (January,2001)
Mist/Steam Heat Transfer With Jet Impingement Onto a Concave Surface
J. Heat Transfer (June,2003)
Mist/Steam Cooling in a 180-Degree Tube Bend
J. Heat Transfer (November,2000)
Related Proceedings Papers
Related Chapters
Numerical Simulation of Nucleate Spray Cooling: Effect of Droplet Impact on Bubble Growth and Heat Transfer in a Thin Liquid Film
Inaugural US-EU-China Thermophysics Conference-Renewable Energy 2009 (UECTC 2009 Proceedings)
Introduction
Thermal Power Plant Cooling: Context and Engineering
Introduction
Consensus on Operating Practices for Control of Water and Steam Chemistry in Combined Cycle and Cogeneration