Vol.1, No 5, 2000 pp. 1 - 8
UDC 665.639.57;678-13
AN ANALYSIS OF OCCURRENCES
IN THE CONDENSED PHASE OF POLYMER FUEL
Ratko Vujović
Dunav - "Preving", Goce Delčeva 46/2, 11000 Belgrade, Serbia
Abstract. An analysis of the space distribution of temperature in
the condensed phase of polymer fuel was carried out. In contrast to the
standard approach where it is assumed that the polymer fuel absorbs irreversibly
both the mass and energy from the area of the products desintegration,
in this paper it is assumed that in addition to the irreversible there
is reversible absorption as well which is, in any case, a more realistic
assessment of occurrences in the condensed phase. On the basis of this
general assumption the dependence of the temperature on the depth of the
fuel layer was found out. It is shown that the reversible absorption process
gives lower temperatures than those predicted by the standard theory. In
practice, it means that the fuel is heated slower than believed and that
the fire lasts longer.
Key words: polymer fuel, combustion, heat, fire,
condensed phase, reversible and irreversible absorption
ANALIZA POJAVA U KONDENZOVANOJ FAZI
POLIMERNOG GORIVA
Ispitivana je prostorna raspodela temperature u kondenzovanoj fazi polimernog
goriva. Za razliku od standardnog prilaza gde se pretpostavlja da polimerno
gorivo ireverzibilno apsorbuje masu i energiju iz oblasti produkata razgradnje
u ovom radu se pretpostavlja da pored ireverzibilne postoji i reverzibilna
apsorpcija što je u svakom slučaju realističnija procena pojava u kondenzovanoj
fazi. Na osnovu ove opštije pretpostavke nađena je zavisnost temperature
od dubine sloja goriva. Pokazano je da uključivanje procesa reverzibilne
apsorbcije daje niže temperature od onih koje predviđa standardna teorija.
To u praksi znači da se gorivo sporije zagreva nego što se misli i da je
trajanje požara duže.
Ključne reči: polimerno gorivo, sagorevanje, toplota,
požar, kondenzovana faza, reverzibilna i ireverzibilna apsorbcija
