A Condenser Heat Exchange Performance Evaluation Method Based on Statistical Analysis of Operating Data

Abstract

The invention discloses a method for evaluating the heat exchange performance of a condenser based on statistical analysis of operating data, which belongs to the technical field of thermal power generation. The evaluation methods in the prior art are difficult to achieve comprehensive and accurate evaluation. If the detection and evaluation of the condenser is carried out by using detection equipment, on the one hand, it needs to increase the cost input, on the other hand, it is difficult to evaluate in real time. According to the data of unit load, circulating water pump operation combination, low-pressure cylinder exhaust temperature, circulating water outlet temperature and circulating water inlet temperature data, the present invention uses a statistical analysis method to respectively establish a standard data fitting model and a comparative data fitting model to obtain condensate The comprehensive heat transfer performance of the condenser can be obtained, and the variation range of the condenser heat transfer performance can be obtained by comparing the differences between the two. The invention can comprehensively evaluate the heat exchange performance of the condenser, and then realize the real-time monitoring of the performance of the condenser, with low cost and less investment.

Description

technical field [0001] The invention relates to a method for evaluating the heat exchange performance of a condenser based on statistical analysis of operating data, and belongs to the technical field of thermal power generation. Background technique [0002] The condenser is the main equipment of the cold-end system of the thermal power generation unit. As a steam-water heat exchange equipment, the condenser end difference obtained by subtracting the exhaust steam temperature of the low-pressure cylinder and the outlet temperature of the circulating water is its key evaluation index, reflecting The advantages and disadvantages of the heat transfer performance of the condenser, the smaller condenser end difference reflects the better condenser heat transfer performance, and the larger condenser end difference reflects the poor condenser heat transfer performance, the condenser The level of the steam turbine end difference directly affects the economic performance of the whol...

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Problems solved by technology

[0003] However, the evaluation methods in the prior art usually evaluate the heat transfer performance of the condenser under one or several agreed working conditions, the coverage is small, and the comparison of working conditions often brings certain errors due to the introduction of additional corrections , so it is difficult to achieve a comprehensive and accurate evaluation

If testing equipment is used to test and evaluate the condenser, on the one hand, it needs to increase the cost input, and on the other hand, it is difficult to evaluate in real time

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