Trasmettanza (Formula & Kalkolazzjoni tal-Trasmettanza għal Assorbment)

Camp: Elektriku Bażiku

China

X’i Huwa l-Transmittanza?

Il-transmittanza ta’ superficie jew material hija definita bħala parti tal-lum għal darba tħallas lil fuq is-silġ oħra tas-superficie. Meta llum jiżommu tridu riforma quddiem ħalquwa jew material, huwa jista’ jiġi mittras, mirriflettut, jew assimilat. Il-transmittanza u ir-riflessjoni huma konċetti strettament relatati.

Il-transmittanza hija definita bħala rapport mill-intensità tal-lum incident (I0) għall-kwanta tal-intensità li tpassa permezz tal-oggett (I). Il-transmittanza tuħaddadha bħala T.

$T = \frac{I}{I_0}$

Transmittance

Kemm turi fil-figura hawn fuq, I0 hija l-intensità tal-lum incident. Dan il-lum jiżommu permezz tal-blokk tal-ġlas jew material ieħor. L-I hija l-intensità tal-lum li tpassa permezz tal-material.

Il-transmittanza hija rapport tal-intensità. Għalhekk, il-transmittanza ma għandha ebda unità.

Lestgħu nifhimu l-transmittanza permezz ta’ eżempju.

Ħalli nippreżummu kondizzjoni fejn il-lum jiżommu permezz tal-oggett mingħajr xi absorbiment, id-direttiva huwa li 100% tal-lum se jiżommu permezz tal-oggett. Għalhekk, f’dan il-kondizzjoni, il-transmittanza hija 100%.

Mill-equazzjoni tal-liġi ta’ Beer, nistgħu nkalkulaw l-absorbiment u huwa żero.

Issa nippreżummu l-kondizzjoni l-oppożuta – il-lum ma jiżommx permezz tal-oggett. F’dan il-kondizzjoni, il-transmittanza hija żero u l-absorbiment huwa infinitu.

Absorbment vs Transmittanza

Il-absorbment u l-transmittanza huma terminji opposti għal iż-żewġ. Il-ħilġien bejn dawn it-tnejn huwa mokkess fis-tavola hawn taħt.

X’hi l-Perċentagg tal-Transmittanza

Il-transmittanza timmisshi l-ammont tal-lum li tpassa permezz tal-material. Il-perċentagg tal-transmittanza huwa definit bħala perċentagg tal-lum li tpassa permezz tal-silġ oħra tas-superficie.

L-equazzjoni tal-perċentagg tal-transmittanza (%T) hi kif segue:

$\%T = 100 \mul T$

Agħti tipp u inkoraġixxi l-awtur!

Suġġetti:

Inġinierija tal-Iluminazzjoni

Teorija tal-Liġħi

Rigward l-esperji

Electrical4u

China

Area tal-espertizza

Basic Electrical

Artiklu professjonali

607

Mħalless

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Rigward l-esperji

Electrical4u

China

Area tal-espertizza

Elektriku Bażiku

Artiklu professjonali

607

	Transmittanza	Absorbment
Definizzjoni	Il-transmittanza hija rapport mill-intensità tal-lum incident (I0) għall-kwanta tal-intensità li tpassa permezz tal-oggett (I).	Il-absorbment huwa definit bħala kwantità tal-lum li ssassmilu l-molekoli tal-oggett.
Equazzjoni	$T = \frac{I}{I_0}$	$A = 2 - log_1_0 (\% T)$
Kemm tibdil il-valur meta tkun l-konċentrazzjoni tżid	Il-transmittanza tdecreases esponenzjalment.	Il-absorbment zid linearment.
Grafiku
Range	Il-valuri jikunu minn 0 sa 1 u s-perċentagg transmittanza jikunu minn 0% sa 100%.	Il-absorbment jikbru valuri minn 0 l-abas.