Paper Information

Title: 

NUMERICAL INVESTIGATION OF CONDENSATION OF TWO COMPONENT VAPOR-LIQUID REFRIGERANTS IN A VERTICAL PIPE

Type: PAPER
Author(s): ESMAEILZADEH ESMAEIL,AMINFAR H.,SALIMI DAVOUD
 
 
 
Name of Seminar: CONFERENCE ON FLUID DYNAMICS
Type of Seminar:  CONFERENCE
Sponsor:  IRANIAN PHYSICS SOCIETY
Date:  2004Volume 9
 
 
Abstract: 

IN THE PRESENT WORK NUMERICAL ANALYSIS FOR CALCULATING THE HEAT TRANSFER OF THE BINARY MIXTURES OF REFRIGERANTS IN A DOWNWARD ANNULAR TWO PHASE FLOW IN A VERTICAL PIPE HAS BEEN CONDUCTED. THE BASIC CONSERVATION EQUATIONS FOR EACH PHASE WERE SEPARATELY SOLVED BASED ON CONTROL VOLUME METHOD. THE EFFECTS OF INSTABILITIES ON THE INTERFACE OF THE PHASES ON THE TRANSPORT PHENOMENA HAVE BEEN CALCULATED BY MEANS OF SUZUKI’S WAVE MODEL. FOR CALCULATING OF THE PROPERTIES OF BINARY MIXTURE BY MEANS OF CORRESPONDING STATES METHOD OF R134A REQUIRED TO DETERMINE THE MOLE FRACTION OF THE MIXTURE. FOR THIS, IDEAL RAOULT EQUILIBRIUM OF PHASES AND A REAL EQUILIBRIUM HAVE BEEN COMPARED. THE NUMERICAL RESULTS FOR BOTH METHODS ARE COMPARED WITH THE EXPERIMENTAL DATA OF R11/R114. FROM THE OBTAINED RAOULT’S LAW IS CALCULATED THAT THE MASS FRACTION REQUIRED TO BE DERIVING BY REAL LAW OF EQUILIBRIUM. THE ALTERNATIVE BLENDS OF R134/R22, HAS BEEN NUMERICALLY ANALYZED DURING HYDRODYNAMICS AND HEAT TRANSFER DURING ITS CONDENSATION.

 
Keyword(s): NUMERICAL SOLUTION, GAS-LIQUID TWO PHASE FLOW, TWO COMPONENT REFRIGERANTS, CONDENSATION, RAOULT IDEAL EQUILIBRIUM, REAL EQUILIBRIUM, R134A EQUATION OF STATE
 
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