A B C D E F G H I J K L M N O P Q R S T U V W X Y Z

CARBON DIOXIDE

DOI: 10.1615/AtoZ.c.carbon_dioxide

Carbon Dioxide (CO2) is a colorless, odorless and nonflammable gas heavier than air. It is classified as one of the major air pollutants when it exceeds its naturally-occurring concentration. There are a number of processes for its production including combustion, fermentation and heating of organic matter. Its main use is in the food and beverage industry, although it is also used as a refrigerant, in fire extinguishing equipment, as a pressure source, aerosol propellant, and also in welding and some metallurgical processes.

Below are some of its major physical characteristics:

Molecular weight: 44.0098Critical temperature: 304.21K
Melting point: 216.5KCritical pressure: 7.3825MPa
Normal boiling point: 194.67KCritical density: 466 kg/m3
Normal vapor density: 1.98 kg/m3(@ 273.15K; 1.0135MPa)

Table 1. Carbon dioxide; values of thermophysical properties of the saturated liquid and vapor

NOTE: The values of thermodynamic properties have been obtained from reference [1], the values of transport properties have been obtained from reference [3], while the values of the surface tension have been obtain from reference [2].

REFERENCES

Angus, S., deReuck, K. M., and Armstrong, B. (1972) International Thermodynamic Tables of the Fluid-State - 3, Carbon Dioxide, Pergamon Press, Oxford.

Beaton, C. F. and Hewitt, G. F, (1989) Physical Property Data for the Design Engineer, Hemisphere Publishing Corporation, New York. DOI: 10.1016/0300-9467(89)80011-5

Vesovic, V: et al. (1990) The Transport Properties of Carbon Dioxide, J. Phys. Chem. Ref. Data, 19:763.

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