Experimental Evaluation of Carbon Dioxide Gas as a Cryogenic Cooling in Machining Process

2017 ◽  
Vol 2017.9 (0) ◽  
pp. 171 ◽  
Author(s):  
Erween Abd RAHIM ◽  
Mohd Noor JAAFAR ◽  
Zazuli MOHID
Keyword(s):  
Carbon Dioxide ◽  
Experimental Evaluation ◽  
Cryogenic Cooling ◽  
Machining Process ◽  
Carbon Dioxide Gas

Enhancement of desorption amount of carbon dioxide gas from monoethanolamine solution using ultrasound and calcium chloride

2020 ◽  
Vol 59 (SK) ◽  
pp. SKKD08
Author(s):  
Yuya Kitamura ◽  
Hirokazu Okawa ◽  
Takahiro Kato ◽  
Katsuyasu Sugawara
Keyword(s):  
Carbon Dioxide ◽  
Calcium Chloride ◽  
Carbon Dioxide Gas

STRATIGRAPHIC, SPATIAL, AND STRUCTURAL STYLE OF NATURAL CARBON DIOXIDE GAS ACCUMULATIONS IN THE GREATER PERMIAN BASIN

2016 ◽  
Author(s):  
Ernie R. Slucher ◽  
◽  
Peter D. Warwick ◽  
Christina A. DeVera ◽  
Celeste D. Lohr ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Permian Basin ◽  
Carbon Dioxide Gas ◽  
Structural Style ◽  
Natural Carbon

scholarly journals Humidity Measurement in Carbon Dioxide with Capacitive Humidity Sensors at Low Temperature and Pressure

Sensors ◽  
2018 ◽  
Vol 18 (8) ◽  
pp. 2615 ◽  
Author(s):  
Andreas Lorek ◽  
Jacek Majewski
Keyword(s):  
Carbon Dioxide ◽  
Low Temperature ◽  
Sensor Calibration ◽  
Humidity Sensors ◽  
Near Surface ◽  
Adsorption Sites ◽  
Carbon Dioxide Gas ◽  
Individual Calibration ◽  
German Aerospace ◽  
Available Information

In experimental chambers for simulating the atmospheric near-surface conditions of Mars, or in situ measurements on Mars, the measurement of the humidity in carbon dioxide gas at low temperature and under low pressure is needed. For this purpose, polymer-based capacitive humidity sensors are used; however, these sensors are designed for measuring the humidity in the air on the Earth. The manufacturers provide only the generic calibration equation for standard environmental conditions in air, and temperature corrections of humidity signal. Because of the lack of freely available information regarding the behavior of the sensors in CO2, the range of reliable results is limited. For these reasons, capacitive humidity sensors (Sensirion SHT75) were tested at the German Aerospace Center (DLR) in its Martian Simulation Facility (MSF). The sensors were investigated in cells with a continuously humidified carbon dioxide flow, for temperatures between −70 °C and 10 °C, and pressures between 10 hPa and 1000 hPa. For 28 temperature–pressure combinations, the sensor calibration equations were calculated together with temperature–dependent formulas for the coefficients of the equations. The characteristic curves obtained from the tests in CO2 and in air were compared for selected temperature–pressure combinations. The results document a strong cross-sensitivity of the sensors to CO2 and, compared with air, a strong pressure sensitivity as well. The reason could be an interaction of the molecules of CO2 with the adsorption sites on the thin polymeric sensing layer. In these circumstances, an individual calibration for each pressure with respect to temperature is required. The performed experiments have shown that this kind of sensor can be a suitable, lightweight, and relatively inexpensive choice for applications in harsh environments such as on Mars.

Carbon dioxide gas embolism in the experimental animal

1996 ◽  
Vol 3 (4) ◽  
pp. S41-S42
Author(s):  
JA Reichert ◽  
K Nagao ◽  
CV Vinekar ◽  
DS Beebe ◽  
M Fowler ◽  
...  
Keyword(s):  
Carbon Dioxide ◽  
Experimental Animal ◽  
Gas Embolism ◽  
Carbon Dioxide Gas

scholarly journals Coprecipitation of calcium and barium carbonates by carbon dioxide gas at 80.DEG.C.

1985 ◽  
Vol 1 (4) ◽  
pp. 369-371
Author(s):  
Keiko YOKOFUJITA ◽  
Kazuyoshi TAKIYAMA
Keyword(s):  
Carbon Dioxide ◽  
Carbon Dioxide Gas
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