Portwest zastitna oprema

129
C
A
B
Types of Heat Transfer:
There are three types of heat transfer in a fire that could cause
burns:
Primjer slojevite strukture
Solar Structural Fire odijela certificirana sukladno normi EN469, razina 2, sastoje se od sljedećih
Types slojeva: of Heat Transfer:
There are three types of heat transfer in a fire that could cause
burns:
A Vanjski sloj
Conduction: Vanjski sloj je od materijala otpornog na vatru i toplinu koji pruža inicijalnu zaštitu od topline,
A conductive plamena heat i habanja burn will occur te štiti if the unutarnju wearer touches podstavu.
a heated
surface or object. The risk of serious conductive burns is even
higher when the wearer touches hot surfaces or objects while
compressing B parts of the garment and exposing themselves to
too much heat. Prepreka For example, za vlagu burns can occur on knees while
crawling Prepreka on hot surfaces. za vlagu This s type PU of premazom a burn is significantly smanjuje količinu vode iz okoline koja može prodrijeti unutar
increased odjeće. if the Još suit jedan becomes bitan wet. aspekt prepreke za vlagu jest sposobnost “disanja”, što omogućuje hlađenje
tijela vatrogasca.
Convection:
Convected heat travels through the air, even if there is no immediate
appearance of fire. Convected heat can increase the temperature
of Termička a fire suit to podstava:
a point at which conductive heat burns
C
can easily Termička occur, particularly podstava if a čine garment dva is sloja wet or koja damp. stvaraju zračni džep koji štiti korisnika od vanjskih izvora
topline. Ova su odijela napravljena od laganog materijala, bez ugrožavanja sigurnosti korisnika ili
Radiation:
Radiation kvalitete is the transfer samog of heat odjevnog into a material, predmeta. directly from
flames or reflected from hot objects. Radiant energy is sensitive
to the color of an object. Black objects absorb the most energy
while white or silver (mirror) absorb very little energy
at could cause
touches a heated
e burns is even
r objects while
g themselves to
n knees while
significantly
Conduction:
A conductive heat burn will occur if the wearer touches a heated
surface or object. The risk of serious conductive burns is even
higher when the wearer touches hot surfaces or objects while
compressing parts of the garment and exposing themselves to
too much heat. For example, burns can occur on knees while
crawling on hot surfaces. This type of a burn is significantly
increased if the suit becomes wet.
Convection:
Convected heat travels through the air, even if there is no immediate
appearance of fire. Convected heat can increase the temperature
of a fire suit to a point at which conductive heat burns
can easily occur, particularly if a garment is wet or damp.
Radiation:
Radiation is the transfer of heat into a material, directly from
flames or reflected from hot objects. Radiant energy is sensitive
to the color of an object. Black objects absorb the most energy
while white or silver (mirror) absorb very little energy
Vrste prijenosa topline
Prilikom požara, moguća su tri načina prijenosa topline koja mogu uzrokovati opekline:
there is no immecrease
the temctive
heat burns
or damp.
directly from
nergy is sensitive
he most energy
nergy
Kondukcija/provodljivost
Konduktivna/provodljiva opeklina
može nastati ukoliko korisnik dodirne
zagrijanu površinu ili predmet.
Konvekcija/prijenos
Konvektivna/prijenosna toplina putuje
zrakom, čak iako nema neposredne
pojave vatre.
Radijacija/isijavanje
Radijacija/isijavanje je prijenos topline
na materijal, izravno od plamena ili
refleksivno od vrućih predmeta.
Brzootpuštajući zatvarač
Brzootpuštajući zatvarač nalazi se na svim Solar Fire odijelima. Dizajn navedenog zatvarača omogućuje korisniku
brzo otvaranje zatvarača od vrha. Oštrim povlačenjem prema gore, zatvarač se oslobađa od jedne strane zuba
zatvarača. To djeluje kao brzo otvaranje te se kod zaštitne odjeće koristi iz sigurnosnih razloga.
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