| Title |
A Study on the Characteristics of Boiling Heat Transfer of Carbon Dioxide with Nitrogen |
| DOI |
https://doi.org/10.6110/KJACR.2021.33.1.001 |
| Keywords |
이산화탄소 포집 저장기술; 이산화탄소 수송; 증발 열전달; 질소; 불순물 Carbon capture & storage; CO2 transportation; Boiling heat transfer; Nitrogen; Impurities |
| Abstract |
The characteristics of boiling heat transfer were experimentally investigated for carbon dioxide with nitrogen impurities. The experimental setup was composed of a test section, a condensation section for the liquefaction of carbon dioxide before entering the pump, and a heating section for controlling the temperature of the entrance of the test unit. The test section was comprised of a double tube heat exchanger. A copper tube with a length of 4 m and a ½-inch diameter was located inside and the PVC pipe used for heating was outside. T-type thermocouples were installed in the annulus space of the test section to measure the brine temperature in the PVC and the surfaces of the copper tube. The experiment was performed under a mass flux of 200~700 kg?m-2s-1 at a nitrogen concentration of 1.0~5.0 mol% and 0.1~0.9 of vapor quality. The boiling heat transfer coefficient of carbon dioxide with impurities decreased by an average of 14.7% compared to pure carbon dioxide. |