Motor vehicles emission in tunnel and COHB concentration in blood.
SITHOK - 3 : Slovensko Drustvo Inzenirjev za tehnologijo hlajenja, ogrevanja in klimatizacije. Mednarodni kongres. Maribor, SVN, 1998/05/09.
All internal combustion engines produce exhaust gases containing noxious compounds : carbon monoxide (CO), nitrogen oxides (NOx), carbon oxides (CxHy) and smoke.
In tunnel is most dangerous the carbon monoxide if it exceed an allowable level.
In human blood the carbon monoxide causes increasing the concentration of carboxihaemoglobine (COHb) and in this case the hypoxi of web.
With help of mathematical model the concentrations of some dangerous substances at the end of tunnel were calculated.
For this case a differential equation also was developed and it shows the correlation between concentration of carbon monoxide in the air and concentration of carboxihaemoglobine in the blood.
The constructed mathematical model shows circumstances in the tunnel (velocity of air moving as effect of induction, concentration of noxious substances and criterial number).
Also a corresponding computer program was developed, which makes possible a quick and simple calculations.
Al the results are proved by experiments.
On the basis of known medical experiments we find out the correlation between the concentration of carbon monoxide in inhaling air and the concentration of carboxihaemoglobine in human blood.
Finally the differential equation was done, which shows a temporal connection between both parameters as a function of tunnel characteristics, human activity and « forloading » with carboxihaemoglobine.
The differential equation was solved numerical by computer. (...)
Mots-clés Pascal : Transport routier, Tunnel routier, Etude impact, Véhicule à moteur, Emission polluant, Mesure concentration, Sang, Carboxyhémoglobine, Carbone dioxyde, Azote oxyde, Simulation numérique, Modèle mathématique, Etude expérimentale, Ecoulement air
Mots-clés Pascal anglais : Road transportation, Road tunnel, Impact study, Motor vehicle, Pollutant emission, Concentration measurement, Blood, Carboxyhemoglobin, Carbon dioxide, Nitrogen oxide, Numerical simulation, Mathematical model, Experimental study, Air flow
Notice produite par :
Inist-CNRS - Institut de l'Information Scientifique et Technique
Cote : 99-0209315
Code Inist : 001D15C. Création : 16/11/1999.