Explosive-hazard estimates for several fluorine-containing monomers and their mixtures, based on the minimum ignition pressure with a fixed igniter energy

Abstract

The minimum pressures necessary to ignite vapors of several fluorine-containing monomers and their mixtures were determined in experiments with one type of the igniter, a spiral made of molybdenum-rhenium wire. The energy supplied to the igniter is adjusted to be sufficient for pure tetrafluoroethylene ignition at pressures over 0.6 MPa.

Development of New Low-GWP Refrigerants–Refrigerant Mixtures Including HFO-1123

“…Experiments were conducted as follows by referring to prior research (Lisochkin and Poznyak 2006). First, before the test gas was introduced into the autoclave through V-1, the autoclave was evacuated using a vacuum pump.…”

“…GWP value (100 years) lower than 300 Acute toxicity with an LC 50 value of 20,000 ppm or higher per Organisation for Economic Co-operation and Development (OECD) guidelines Non-or mildly-flammable Performance equivalent to R-410A This paper provides physical properties and theoretical cycle data, compatibility with oils, and performance studies of HFO-1123 mixtures as an alternatives for R-410A. HFO-1123 is known to undergo disproportionation in the presence of an ignition source (Equation 1: Lisochkin and Poznyak 2006;Ferrero et al 2012). This reaction is a self-decomposing reaction accompanied by large heat generation, and there is a risk of causing destruction of air conditioning equipment; therefore, evaluations to determine whether it can be used as a refrigerant safely are a key factor to its practical application.…”