Preprint Article Version 1 This version is not peer-reviewed

Experimental Investigation on Condensation of Vapor in the Presence of Non-Condensable Gas on a Vertical Tube

Version 1 : Received: 4 May 2018 / Approved: 7 May 2018 / Online: 7 May 2018 (05:09:47 CEST)

How to cite: Zhang, S.; Shen, F.; Cheng, X..; Meng, X.; He, D. Experimental Investigation on Condensation of Vapor in the Presence of Non-Condensable Gas on a Vertical Tube. Preprints 2018, 2018050098 (doi: 10.20944/preprints201805.0098.v1). Zhang, S.; Shen, F.; Cheng, X..; Meng, X.; He, D. Experimental Investigation on Condensation of Vapor in the Presence of Non-Condensable Gas on a Vertical Tube. Preprints 2018, 2018050098 (doi: 10.20944/preprints201805.0098.v1).

Abstract

According to the operation conditions of time unlimited passive containment heat removal system (TUPAC), a separate effect experiment facility was established to investigate the heat transfer performance of steam condensation in presence of non-condensable gas. The effect of wall subcooling temperature, total pressure and mass fraction of the air on heat transfer process was analyzed. The heat transfer model was also developed. The results showed that the heat transfer coefficient decreased with the rising of subcooling temperature, the decreasing of the total pressure and air mass fraction. It was revealed that Dehbi’s correlation predicted the heat transfer coefficient conservatively, especially in the low pressure and low temperature region. The novel correlation was fitted by the data obtained in the following range: 0.20~0.45 MPa in pressure, 20% ~ 80% in mass fraction, 15°C ~ 45°C in temperature. The discrepancy of the correlation and experiment data was with ±20%.

Subject Areas

condensation; non-condensable gas; experimental study; containment cooling

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