ou1-c6-filtrarea - Cadre Didactice

ou1-c6-filtrarea - Cadre Didactice ou1-c6-filtrarea - Cadre Didactice

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4/26/2003 Teoria filtrarii prin stratul de pp. o Filtrarea la debit de filtrare constant – se realizeaza mai dificil; – presiunea trebuie marita pe masura ce debitul tinde sa scada. o La debit constant: o Ecuatia (13) devine: V t = A 2 dV = dt ⋅ r 1 V t ( ∆P) ⋅ μ 1−s χ ⋅V Lucian Gavrila – OPERATII UNITARE I ⋅ (16) (17) 40

4/26/2003 Teoria filtrarii prin stratul de pp. o Sau: 2 ( ) 1−s ⎞ ∆P ⎜ ⎟ = ⋅ t = K2 ⋅ ∆P ⎝ A ⎠ r1 ⋅ μ ⋅ χ o Daca (18) se pune sub forma: ⎛ V −s 1 A 2 ⋅ V K o Termenul stang este ct.; pt. a realiza o filtrare cu debit ct., ∆P trebuie sa varieze astfel incat: ⎛ ⎜ ⎝ t ⎞ ⎟ ⎠ 2 = 2 ⋅ ( ∆P) ( ) 1 ⋅ t t ( P) t 1−s ∆ s 1− Lucian Gavrila – OPERATII UNITARE I = ct. (18) (19) (20) 41

4/26/2003<br />

Teoria filtrarii prin stratul de pp.<br />

o Filtrarea la debit de filtrare constant<br />

– se realizeaza mai dificil;<br />

– presiunea trebuie marita pe masura ce debitul tinde sa<br />

scada.<br />

o La debit constant:<br />

o Ecuatia (13) devine:<br />

V<br />

t<br />

=<br />

A<br />

2<br />

dV<br />

=<br />

dt<br />

⋅<br />

r<br />

1<br />

V<br />

t<br />

( ∆P)<br />

⋅<br />

μ<br />

1−s<br />

χ<br />

⋅V<br />

Lucian Gavrila – OPERATII UNITARE I<br />

⋅<br />

(16)<br />

(17)<br />

40

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