Theoretical And Experimental Investigation On The Heat Exchanger And The Resistance Properties Of Flat Tube

In this article, the parallel flow condenser composed of porous flat tube is the mainstudy object: firstly, it tells the research status on the heat transfer flow properties of theflat tube and fin of the parallel flow condenser, and it summarizes the future research anddevelopment trend of the parallel flow condenser; secondly, it carries out a detailedintroduction to the physical model of louver fin and refrigerant side heat transfer flowmodel used in the numerical calculation, and it also establishes an appropriatemathematical model to calculate the object of study, and then it introduces the finitevolume method and the simulation algorithm of the parallel flow condenser. After that, itexplains each test device of the test chamber in great detail. And it carries out a detailedintroduction to the refrigerant cycle system, the wind tunnel test system, the electricalcontrol and data processing systems of the entire test system. And then, it conducts a studyon the geometric parameters of the condenser under test, test conditions and datameasurement methods. In the end, it analyzes the data measured by the test, and it makes acomparative analysis between the simulation results and the experimental results. Afterthat, in order to confirm the reliability and uncertainty of the experimental data, this paperfocuses on the analysis and calculation of the reliability of the test equipment and theuncertainty of test data.This dissertation has shown that the studied heat transfer performance of the parallelflow condenser does not necessarily enhance with the increase in the number of flat pores,but with the increase of the number of flat pores, it shows the trend of first enhanced andthen weakened. Refrigerant side pressure drop is increased with the increase in the numberof flat pores. The models in this subject are in good agreement with the test results whenthe flat tube hydraulic diameter is0.8mm. After the analysis of the reliability of the testequipment and the uncertainty of test data, the calculation results show that the error of thetest parameters can be controlled within5%. The measured data of the test has a highreliability, and the results based on the tests can be trusted.