Realization of the sublimation temperature point of carbon dioxide

Abstract

Possibilities for realization of the sublimation temperature point (-78.464 °C) of carbon dioxide at standard atmospheric pressure are investigated. A simple methodology is demonstrated, and experimental results consistent with those obtained by other authors who used much more sophisticated methods are presented.

Modeling of CO2 Decompression across the Triple Point

“…An interesting and important observation made from the CO2PipeHaz FP7 pipeline rupture tests was that the rapid expansion-induced cooling of the CO 2 often resulted in surpassing its triple-point temperature 216 K, leading to solid CO 2 (commonly known as “dry ice”) formed inside the pipeline as can be observed in the photographs (Figure ) taken in the CO2PipeHaz Full-Bore Rupture (FBR) test performed using pure CO 2 initially at 53 bar and 2 °C.…”

Integral Multiphase Turbulence Compressible Jet Expansion Model for Accidental Releases from Pressurized Containments

“…In the case of dense-phase CO 2 (i.e., pressure higher than 74 bar), widely considered to be the most economical way of its pipeline transportation, the transition below the triple point (216.6 K, 5.18 bar ) leading to solid CO 2 formation is likely following accidental rupture. The possibility of solid formation is of concern given that the subsequent delay in its sublimation impacts the CO 2 cloud dispersion hazard profile.…”