Entransy Dissipation Analysis Of Thermal Power Plant’s Condenser

Energy issues increasingly attracted high attention worldwide. It’s without delay to conserve energy and improve energy efficiency. Condenser is concerned as an important device in thermal power system. How to better establish the condenser vacuum is the key to improve the unit output. How to determine the optimum cooling water flow to make the largest gains is of concern. Instead of the traditional cold-end system analysis methods, entransy dissipation is used to analyze the condenser heat transfer.First, the condenser’s internal heat exchanger structure is decomposed to five parts from shell to tube side. Taking into account the thermal conductivity of condensate film outside the tube. Determine the average temperature of each heat transfer process by thermal resistance analysis. In addition, the tube resistance and the steam resistance by the shell side were drawn, and it’s ready for entransy dissipation analysis of the condenser.Second, the theory of entransy dissipation analysis and the condenser heat were combined. The method for entransy dissipation analysis corresponding of different conderser heat transfer process was found. The entransy dissipation of all parts of the condenser was got successfully. By accounting variable condition, a new theoretical method to determine the optimal recycling rate and the corresponding condenser vacuum recyclingrate corresponding the minimum condenser thermal dissipation. By calculating and analyzing the single and the double pressure condenser entransy dissipation, a theory was drawn that the more uniform temperature gradient, the less entransy dissipation, and the higher efficiency of the heat transfer.