CO_2单管池沸腾换热实验研究

在CO2跨临界水-水热泵试验台添加池沸腾实验段,进行CO2单管池沸腾换热实验,用威尔逊分析法对实验数据进行处理。研究表明:CO2池沸腾换热效果优于管内沸腾换热效果;同时,结合实验数据,拟合在饱和压力3.2和3.4MPa下的CO2池沸腾换热系数与热流密度和对比压力之间的关联式。

Experimental Study of the Boiling-based Heat Exchange of Carbon Dioxide in a Pool Equipped with a Single Tube

In the boiling-based test section of a filling pool of a CO2 trans-critical water-water heat pump test stand,tested was the boiling-based heat exchange of carbon dioxide in the pool with the test data being processed by using the Wilson analytic method.The test results show that the boiling-based heat exchange effectiveness in the CO2 pool is superior to that in the tube.In the meantime,on the basis of the test data,the correlation formulae for the boiling-based heat exchange coefficient,heat flux density and contrast pressure of the CO2 pool at the saturation pressure 3.2 MPa and 3.4 MPa were obtained through a fitting.