Experimental study of CO2 releases from a saturated liquid reservoir

To improve the tools used in safety assessments for handling transport and storage of CO2 experimental results are used as a reference. The present study measures mass flux, temperature of the jet and particle sizes of a release from a liquid CO2 reservoir. In a release to the atmosphere from a liquid reservoir with a pressure of 6 MPa and 293 K, the jet formed consists of gas and solid particles. In the experiments the CO2 is released through nozzles of 0.25 mm, 0.5 mm, 1 mm and 2.5 mm diameters. Both high speed imaging and laser diffraction is used for particle characterization. The results show that the jet core temperature is 205 K close to the release and increases after 100 diameters. The measured mass flux decreases with increasing nozzle diameter. The average mass flux is 38 g/s. mm(2). The high speed imaging shows particle sizes of 20-80 mu m with velocities up to 100 m/s at the edges of the jet. It was not possible to measure particles in the jet core with high speed imaging. The laser diffraction experiments show a clear particle size concentration of about 1 mu m. (C) 2013 The Authors. Published by Elsevier Ltd.