Gas dilution experiment for undergraduate

2020 ◽  
Vol 41 (4) ◽  
pp. 045801
Author(s):  
I E Santosa
Author(s):  
Linrong Ye ◽  
Hao Yu ◽  
Mingjun Wang ◽  
Qianglong Wang ◽  
Wenxi Tian ◽  
...  

2014 ◽  
Vol 672-674 ◽  
pp. 665-671
Author(s):  
Hao Jie Gao ◽  
Yue Zhao Zhu ◽  
Hai Jun Chen ◽  
Chuan Hua Liao ◽  
Yang Du ◽  
...  

Pyrolysis of Hailar lignite (moisture content ~ 34.81 wt%) was investigated at temperatures ranging from 700 °C to 900 °C in two different reactors: A tubular reactor (TR) and a continuous screw kiln reactor (CSKR). Under temperature programmed-heating conditions in the TR reactor, the auto-generated steam from the lignite moisture was vaporized and swept out of the reactor by the N2flow during the long heating process, leading to a weakened effect on the subsequent reactions. However, in the CSKR tests all the volatiles was generated continuously while avoid the carrier gas dilution , significant interactions between the in situ steam and the intermediate products occurred. Upon comparing the two pyrolysis processes, it was found the CSKR process exhibits higher H2yield of 23.23 mol/kg, H2proportion of 49.82 vol % than those (16.97 mol/kg, 41.51 vol %) from the TR process. The results demonstrated that inherent moisture in Hailar lignite had a significant influence on the product yield, depending on the pyrolysis conditions. It was also shown that increase in temperature led to rising dry gas yield and H2yield.


Silicon ◽  
2018 ◽  
Vol 11 (4) ◽  
pp. 2075-2086
Author(s):  
N. El Arbi ◽  
R. Jemai ◽  
K. Khirouni ◽  
H. Khemakhem

LWT ◽  
2006 ◽  
Vol 39 (5) ◽  
pp. 472-478 ◽  
Author(s):  
Pongsuriya Komthong ◽  
Shoichi Hayakawa ◽  
Tatsuo Katoh ◽  
Noriyuki Igura ◽  
Mitsuya Shimoda

1999 ◽  
Vol 349 (1-2) ◽  
pp. 93-99 ◽  
Author(s):  
M.L Addonizio ◽  
A Antonaia ◽  
G Cantele ◽  
C Privato

1994 ◽  
Vol 77 (3) ◽  
pp. 1562-1564 ◽  
Author(s):  
Y. Sivan ◽  
J. Hammer ◽  
C. J. Newth

Studies on human infants suggested that thoracic gas volume (TGV) measured at end exhalation may not depict the true TGV and may differ from TGV measured from a series of higher lung volumes and corrected for the volume added. This was explained by gas trapping. If true, we should expect the discrepancy to be more pronounced when functional residual capacity (FRC) and higher lung volumes are measured by gas dilution techniques. We studied lung volumes above FRC by the nitrogen washout technique in 12 spontaneously breathing rhesus monkeys (5.0–11.3 kg wt; 42 compared measurements). Lung volumes directly measured were compared with preset lung volumes achieved by artificial inflation of the lungs above FRC with known volumes of air (100–260 ml). Measured lung volume strongly correlated with and was not significantly different from present lung volume (P = 0.05; r = 0.996). The difference between measured and preset lung volume was 0–5% in 41 of 42 cases [1 +/- 0.4% (SE)]. The direction of the difference was unpredictable; in 22 of 42 cases the measured volume was larger than the preset volume, but in 17 of 42 cases it was smaller. The difference was not affected by the volume of gas artificially inflated into the lungs. We conclude that, overall, lung volumes above FRC can be reliably measured by the nitrogen washout technique and that FRC measurements by this method reasonably reflect true FRC.


BMC Genomics ◽  
2010 ◽  
Vol 11 (1) ◽  
Author(s):  
Andy G Lynch ◽  
James Hadfield ◽  
Mark J Dunning ◽  
Michelle Osborne ◽  
Natalie P Thorne ◽  
...  
Keyword(s):  

Sign in / Sign up

Export Citation Format

Share Document