English (United Kingdom)

https://curated-unify.zendy.io/wp-json/zendy-region/v1/featured_content/oa?rat=en

https://curated-unify.zendy.io/wp-json/zendy-region/v1/highlighted_journal/

Global: Zendy Plus annual

Presents the access of premium content as premium feature

Premium Content

Presents the keyphrase highlighting as premium feature

Keyphrase Highlighting

Presents the summarisation as premium feature

Summarisation

Insights

Presents the pdf analysis as premium feature

PDF Analysis

Presents the zaia usage as premium feature

ZAIA

Global: Zendy Plus monthly

Global: Zendy Tools annual

Global: Zendy Tools monthly

Global: Zendy Free Plan

Experiments in which PVC wire insulation was decomposed by an electrical overload in a plenum or in a 200 ~ PMMA box showed that the highest concentration of HCl in the atmosphere was always less than 40% of the theoretical amount of chlorine in the original sample. Furthermore. this concentration quickly decays to a level that is dependent on humidity, but never more than 4% of the theoretical maximum. A mathematical model was used to determine a number of parameters that describe the system. The same model applies to both large and small scale tests. This treatment showed that less than 48% of the chlorine in the wire reached the atmosphere. It also showed that the rate of decay was primarily dependent on the rate of transport in the system, producing a half life of 5-6 min without external agitation. Furthermore, the final HCI concentration was found to be dependent on relative humidity, and on surface composition (painted gypsum or PMMA). INTRODUCTION Large scale experiments have recently been conducted1 in order to confirm earlier observations from small scale work 2-7 that hydrogen chloride (HCl) is not indefinitely stable in the atmosphere, ~ut rather that it "decays." With the objective in mind of developing a mathematical model of the airborne HCl concentrations observed, which can be used for a variety of scenarios, smaller scale experiments were designed to facilitate quantification of the effects of relative humidity (RH) and air recirculation on the transport and decay of HCl.

fire safety science

Thermal Decomposition Of Poly (vinyl Chloride): Kinetics Of Generation And Decay Of Hydrogen Chloride In Large And Small Systems And The Effect Of Humidity