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Research of Heat Transfer and Flow Resistance Coupling Effect During Condensation in Horizontal Tube
Author: ZhaoYunYu
Tutor: ZhouShaoXiang
School: North China Electric Power University (Beijing)
Course: Thermal Power Engineering
Keywords: Condensation tube Falling film evaporator Model Numerical Solution Iterative calculation
CLC: TK124
Type: Master's thesis
Year: 2011
Downloads: 124
Quote: 0
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Abstract
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Of tube condensation process flow and heat transfer process is a complex two-phase flow and phase change heat transfer problems . Currently, the work of tube condensation process experiment - based study of the theory of two-phase flow and heat transfer process , condensing tube , a study of the condensation process flow and heat transfer characteristics . Condensation pipeline flow resistance and heat transfer characteristics of a mutual coupling relationship with the condensation of steam condensation heat transfer characteristics of the heat exchanger can not individually discuss each item correctly solving . In fluid mechanics and heat transfer on the basis of the analysis of the the specific steam condensation heat transfer tube and flow process , the establishment of the condensate flow and heat transfer in the tube coupling relationship between differential equations model to provide a theoretical basis for the condensing heat exchanger design and optimization process . The numerical method for solving the model , using VB preparation procedures , examples of calculation of a desalination falling film evaporation horizontal tube condensation process . Finally, the numerical results of the analysis are discussed infinitesimal segment step iteration results and the pressure loss , temperature and dryness in the condensation process along the way changes , and spray density of the condensation heat transfer .
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CLC: > Industrial Technology > Energy and Power Engineering > Thermal engineering, heat > Thermal Engineering Theory > Heat Transfer
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