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BASINÇ KAYBI FORMÜLÜ

 F ×L
 P ×V
+ K ×
ΔP= 
2
 D


K: f ×

L
D

2

Re=123,9 ×

SÜREKLİ KAYIPLAR:
d ×v × ρ

µ

d: internal diameter (inch)
v: velocity feet per second

ρ : weight density pound percubic feet

µ : absolute viscosity (dynamic) in centipoise
ρ : 62,116 pound per cublic feet

µ : 0,8 centipoise
A-B ARASI BASINÇ KAYBI
SÜRTÜNME FAKTÖRÜ:

K @ 24 "
d : 23, 2 ıı / v :
K @ 24" →
d : 23,2 ıı / v :

Q
A

Re @ 24 ıı =123,9 ×

→ Q=5422/2=2711

d × v × 62,116
0,8

m3 / h

A=π × r 2 = 3,14 × ( 0,295) m 2
= 0,273 m 2
2

v:

2711m 3 / h
= 9930m / h = 2,75m / s = 9 feet/second
0,273m 2

Re @ 24ıı = 123,9 ×
f ≅ 0,0135

23,2 ıı ×9 × 02,116
= 2008700 ≅ 2 ×10 6
0,8

Q
A
Δ

PAB

2
kg
2 m
995 3 × ( 2,75) 2
 0,0135 × 3,5m

m
s = Pa
=
+ K 1 + K 2 + K 3 + K entrance  ×
0,6m
2



K 1 → 0.05 bar (check valve) (from samsun machinery ind. Co.) will be added later
K 2 → 1,2 (90º miter) (according to Zurn Ind. Inc. Design engineering standarts )
K 3 → 0,3 (butterfly valve) (24” K=25Ft K=25x0.012=0.3 according to Crane)
K entrance →0,5 ( Entrance) (accordin to Zurn Ind. Inc. Design engineering standarts )

Δ PAB =

( 0,08 +1,2 +1,3 + 0,5) × 995 × 7,56 = 7823P

A

2

= 0,08bar

B-C ARASI BASINÇ KAYBI
SÜRTÜNME FAKTÖRÜ:

K @ 40 "
d : 39.25 ıı / v :
K @ 40" →
d : 39.25 ıı / v :

Q
A

Re @ 40 ıı =123,9 ×

→ Q=5422

d ×v ×62,116
0,8

m3 / h

A=π × r 2 = 3,14 × ( 0,498) m 2
= 0,273 m 2
2

5422m 3 / h
= 6951m / h = 1.93m / s = 6.33 feet/second
v:
0,78m 2

Re @ 40 ıı = 123,9 ×
f ≅ 0,0115

39.25 ıı ×6.33 ×02,116
= 2390166
0,8

Q
A
Δ

 0,0115 × 31

PBC = 
+ K 4 + K5 + K6 + K7 + K8  ×
1



0,0115 ×31
1

995

2
kg
2 m
× (1,93) 2
m3
s
2

→ 0,35

K4

→ 0,5

(Run) (According to Zurn Ind. Inc. Design engineering standarts )

K5

→ 0,5

(Run)

K 6 →0,3 (45º miter) (according to Zurn Ind. Inc. Design engineering standarts )
K7

→ 0,3

(45º miter)

K 8 → 0,5 (Entrance)

Δ PBC =

2,45 × 995 × 3,72
= 4534
2

Pa=0,045 bar

C-D ARASI BASINÇ KAYBI
SÜRTÜNME FAKTÖRÜ:

K @ 26 "
d : 25.35 ıı / v :
K @ 26" →
d : 25.35 ıı / v :

Q
A

Re @ 26 ıı =123,9 ×

d × v × 62,116
0,8

→ Q=5422/2=2711

m3 / h

A=π × r 2 = 3,14 × ( 0,326 ) m 2
= 0,333 m 2
2

5422m 3 / h
= 8141m / h = 2.26m / s = 7.41 feet/second
V=
0,333m 2

Re @ 26 ıı = 123,9 ×
f ≅ 0,0120

25.35 ıı ×7.41 ×62,116
= 21807094
0,8

Q
A
Δ

 0,012 × 20

PCD = 
+ K 9 + K10 + K condensar + K 11 + K 12 + K13  ×
 0,64


0,012 ×20
0,64

K9

K10

→ 1,2

2
kg
2 m
× ( 2,26) 2
m3
s
2

→ 0,4
(90º miter)

→ 1,2

K condensar

995

(90º miter)

→ 0,5 bar (according to CDP006655-R1_DATASHEET_CONDENSER)

K11

→ 1,2

(90º miter)

K12

→ 1,2

(90º miter)

K 13

→ 1,0

(Exit) (according to Zurn Ind. Inc. Design engineering standarts )

Δ PCD =

6.2 ×995 ×5.1
=15754
2

Pa=0,157 bar

Δ P =0.157+ 0.5 (condeser loss)=0.657 bar
CD
D-E ARASI BASINÇ KAYBI
SÜRTÜNME FAKTÖRÜ:
f ≅ 0,0115 daha önce 40” için bulunmuştu

Δ

 0,0115 × 26

PDE = 
+ K 14  ×
1



0,0115 × 26
1

K 14

→ 1,2

Δ PDE =

995

2
kg
2 m
× (1.93) 2
m3
s
2

→ 0,3

(90º miter)

1.5 ×995 ×3,72
= 2776
2

Pa=0,03 bar
E-F ARASI BASINÇ KAYBI
SÜRTÜNME FAKTÖRÜ:
f ≅ 0,0115 daha önce 40” için bulunmuştu

Δ

 0,0115 × 8.5

PEF = 
+ K15  ×
1



0,0115 ×8.5
1
K9

→ 0.5

Δ PEF =

995

2
kg
2 m
× (1.54 ) 2
m3
s
2

→ 0,1

(Run)

0.6 × 995 × 2.37
= 708
2

Pa=0,007 bar
F-G ARASI BASINÇ KAYBI
SÜRTÜNME FAKTÖRÜ:

f ≅ 0,012 daha önce 40” için bulunmuştu

Δ

 0,012 × 8.5

PFG = 
+ K 16  ×
1



0,012 ×8.5
1
K16

→ 0.5

Δ PFG =

995

2
kg
2 m
× (1.15) 2
m3
s
2

→ 0,1

(Run)

0.6 ×995 ×1.32
= 395
2

Pa=0,004 bar

G-H ARASI BASINÇ KAYBI
SÜRTÜNME FAKTÖRÜ:
f ≅ 0,0125 daha önce 40” için bulunmuştu
Δ

 0,012 × 8.5

PGH = 
+ K17  ×
1



0,0125 ×8.5
1
K17

→ 0.5

Δ PFG =

995

2
kg
2 m
× ( 0.77 ) 2
m3
s
2

→ 0,1

(Run)

0.6 ×995 × 0.6
=180 Pa=0,002 bar
2
H-I ARASI BASINÇ KAYBI
SÜRTÜNME FAKTÖRÜ:

f ≅ 0,013 daha önce 40” için bulunmuştu

Δ

 0,013 × 8.5

PHI = 
+ K18  ×
1



0,013 ×8.5
1
K 18

→ 0.5

Δ PHI =

995

2
kg
2 m
× ( 0.386 ) 2
m3
s
2

→ 0,1

(Run)

0.6 ×995 × 0.148
= 44 Pa=0,0005 bar
2

I-J ARASI BASINÇ KAYBI
SÜRTÜNME FAKTÖRÜ:
K @ 20 "
d : 19.5
→

Re @ 20 ıı =123,9 ×

d : 19.5 ıı / v :

Q
A

Q
/ v :
A

ıı

d ×v ×62,116
0,8

→ Q=5422/5=1085

K @ 20"

m3 / h

A=π × r 2 = 3,14 × ( 0,247 ) m 2
= 0,191 m 2
2

V=

1085m 3 / h
= 5680m / h = 1.58m / s = 5.17 feet/second
0,191m 2

Re @ 20ıı = 123,9 ×

19.5 ıı ×5.17 ×62,116
= 969862
0,8

f ≅ 0,0135

Δ

 0,0135 ×12

PIJ = 
+ K19 + K 20 + K 21 + K 22  ×
0,49



0,012 ×20
0,64

995

2
kg
2 m
× (1.58) 2
m3
s
2

→ 0,4

K19

→ 0,5

(Entrance)

K 20

→ 1,2

(90º miter)

K 21

→ 1,2

(90º miter)

K 22

→ 0,3

(butterfly valve) (24” K=25Ft K=25x0.012=0.3 according to Crane)

Δ PIJ =

3.53 ×995 × 2.5
= 4390
2

Pa=0,04 bar

J-A ARASI BASINÇ KAYBI
Δ PJA =5 Mss =0.5 bar (according to e-mail from cooling tower manufacturer dated 20,01,2009)
TOPLAM BASINÇ KAYBI

∑ Δ P =0,13+0,045+0,656+0,03+0,007+0,004+0,002+0,0005+0,04+0,5
=1,414 bar
Kuzey soğutma kulesi̇ basinç kaybi

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Kuzey soğutma kulesi̇ basinç kaybi

  • 1. BASINÇ KAYBI FORMÜLÜ  F ×L  P ×V + K × ΔP=  2  D  K: f × L D 2 Re=123,9 × SÜREKLİ KAYIPLAR: d ×v × ρ µ d: internal diameter (inch) v: velocity feet per second ρ : weight density pound percubic feet µ : absolute viscosity (dynamic) in centipoise ρ : 62,116 pound per cublic feet µ : 0,8 centipoise A-B ARASI BASINÇ KAYBI SÜRTÜNME FAKTÖRÜ: K @ 24 " d : 23, 2 ıı / v : K @ 24" → d : 23,2 ıı / v : Q A Re @ 24 ıı =123,9 × → Q=5422/2=2711 d × v × 62,116 0,8 m3 / h A=π × r 2 = 3,14 × ( 0,295) m 2 = 0,273 m 2 2 v: 2711m 3 / h = 9930m / h = 2,75m / s = 9 feet/second 0,273m 2 Re @ 24ıı = 123,9 × f ≅ 0,0135 23,2 ıı ×9 × 02,116 = 2008700 ≅ 2 ×10 6 0,8 Q A
  • 2. Δ PAB 2 kg 2 m 995 3 × ( 2,75) 2  0,0135 × 3,5m  m s = Pa = + K 1 + K 2 + K 3 + K entrance  × 0,6m 2   K 1 → 0.05 bar (check valve) (from samsun machinery ind. Co.) will be added later K 2 → 1,2 (90º miter) (according to Zurn Ind. Inc. Design engineering standarts ) K 3 → 0,3 (butterfly valve) (24” K=25Ft K=25x0.012=0.3 according to Crane) K entrance →0,5 ( Entrance) (accordin to Zurn Ind. Inc. Design engineering standarts ) Δ PAB = ( 0,08 +1,2 +1,3 + 0,5) × 995 × 7,56 = 7823P A 2 = 0,08bar B-C ARASI BASINÇ KAYBI SÜRTÜNME FAKTÖRÜ: K @ 40 " d : 39.25 ıı / v : K @ 40" → d : 39.25 ıı / v : Q A Re @ 40 ıı =123,9 × → Q=5422 d ×v ×62,116 0,8 m3 / h A=π × r 2 = 3,14 × ( 0,498) m 2 = 0,273 m 2 2 5422m 3 / h = 6951m / h = 1.93m / s = 6.33 feet/second v: 0,78m 2 Re @ 40 ıı = 123,9 × f ≅ 0,0115 39.25 ıı ×6.33 ×02,116 = 2390166 0,8 Q A
  • 3. Δ  0,0115 × 31  PBC =  + K 4 + K5 + K6 + K7 + K8  × 1   0,0115 ×31 1 995 2 kg 2 m × (1,93) 2 m3 s 2 → 0,35 K4 → 0,5 (Run) (According to Zurn Ind. Inc. Design engineering standarts ) K5 → 0,5 (Run) K 6 →0,3 (45º miter) (according to Zurn Ind. Inc. Design engineering standarts ) K7 → 0,3 (45º miter) K 8 → 0,5 (Entrance) Δ PBC = 2,45 × 995 × 3,72 = 4534 2 Pa=0,045 bar C-D ARASI BASINÇ KAYBI SÜRTÜNME FAKTÖRÜ: K @ 26 " d : 25.35 ıı / v : K @ 26" → d : 25.35 ıı / v : Q A Re @ 26 ıı =123,9 × d × v × 62,116 0,8 → Q=5422/2=2711 m3 / h A=π × r 2 = 3,14 × ( 0,326 ) m 2 = 0,333 m 2 2 5422m 3 / h = 8141m / h = 2.26m / s = 7.41 feet/second V= 0,333m 2 Re @ 26 ıı = 123,9 × f ≅ 0,0120 25.35 ıı ×7.41 ×62,116 = 21807094 0,8 Q A
  • 4. Δ  0,012 × 20  PCD =  + K 9 + K10 + K condensar + K 11 + K 12 + K13  ×  0,64  0,012 ×20 0,64 K9 K10 → 1,2 2 kg 2 m × ( 2,26) 2 m3 s 2 → 0,4 (90º miter) → 1,2 K condensar 995 (90º miter) → 0,5 bar (according to CDP006655-R1_DATASHEET_CONDENSER) K11 → 1,2 (90º miter) K12 → 1,2 (90º miter) K 13 → 1,0 (Exit) (according to Zurn Ind. Inc. Design engineering standarts ) Δ PCD = 6.2 ×995 ×5.1 =15754 2 Pa=0,157 bar Δ P =0.157+ 0.5 (condeser loss)=0.657 bar CD D-E ARASI BASINÇ KAYBI SÜRTÜNME FAKTÖRÜ: f ≅ 0,0115 daha önce 40” için bulunmuştu Δ  0,0115 × 26  PDE =  + K 14  × 1   0,0115 × 26 1 K 14 → 1,2 Δ PDE = 995 2 kg 2 m × (1.93) 2 m3 s 2 → 0,3 (90º miter) 1.5 ×995 ×3,72 = 2776 2 Pa=0,03 bar E-F ARASI BASINÇ KAYBI SÜRTÜNME FAKTÖRÜ:
  • 5. f ≅ 0,0115 daha önce 40” için bulunmuştu Δ  0,0115 × 8.5  PEF =  + K15  × 1   0,0115 ×8.5 1 K9 → 0.5 Δ PEF = 995 2 kg 2 m × (1.54 ) 2 m3 s 2 → 0,1 (Run) 0.6 × 995 × 2.37 = 708 2 Pa=0,007 bar F-G ARASI BASINÇ KAYBI SÜRTÜNME FAKTÖRÜ: f ≅ 0,012 daha önce 40” için bulunmuştu Δ  0,012 × 8.5  PFG =  + K 16  × 1   0,012 ×8.5 1 K16 → 0.5 Δ PFG = 995 2 kg 2 m × (1.15) 2 m3 s 2 → 0,1 (Run) 0.6 ×995 ×1.32 = 395 2 Pa=0,004 bar G-H ARASI BASINÇ KAYBI SÜRTÜNME FAKTÖRÜ: f ≅ 0,0125 daha önce 40” için bulunmuştu
  • 6. Δ  0,012 × 8.5  PGH =  + K17  × 1   0,0125 ×8.5 1 K17 → 0.5 Δ PFG = 995 2 kg 2 m × ( 0.77 ) 2 m3 s 2 → 0,1 (Run) 0.6 ×995 × 0.6 =180 Pa=0,002 bar 2 H-I ARASI BASINÇ KAYBI SÜRTÜNME FAKTÖRÜ: f ≅ 0,013 daha önce 40” için bulunmuştu Δ  0,013 × 8.5  PHI =  + K18  × 1   0,013 ×8.5 1 K 18 → 0.5 Δ PHI = 995 2 kg 2 m × ( 0.386 ) 2 m3 s 2 → 0,1 (Run) 0.6 ×995 × 0.148 = 44 Pa=0,0005 bar 2 I-J ARASI BASINÇ KAYBI SÜRTÜNME FAKTÖRÜ:
  • 7. K @ 20 " d : 19.5 → Re @ 20 ıı =123,9 × d : 19.5 ıı / v : Q A Q / v : A ıı d ×v ×62,116 0,8 → Q=5422/5=1085 K @ 20" m3 / h A=π × r 2 = 3,14 × ( 0,247 ) m 2 = 0,191 m 2 2 V= 1085m 3 / h = 5680m / h = 1.58m / s = 5.17 feet/second 0,191m 2 Re @ 20ıı = 123,9 × 19.5 ıı ×5.17 ×62,116 = 969862 0,8 f ≅ 0,0135 Δ  0,0135 ×12  PIJ =  + K19 + K 20 + K 21 + K 22  × 0,49   0,012 ×20 0,64 995 2 kg 2 m × (1.58) 2 m3 s 2 → 0,4 K19 → 0,5 (Entrance) K 20 → 1,2 (90º miter) K 21 → 1,2 (90º miter) K 22 → 0,3 (butterfly valve) (24” K=25Ft K=25x0.012=0.3 according to Crane) Δ PIJ = 3.53 ×995 × 2.5 = 4390 2 Pa=0,04 bar J-A ARASI BASINÇ KAYBI Δ PJA =5 Mss =0.5 bar (according to e-mail from cooling tower manufacturer dated 20,01,2009) TOPLAM BASINÇ KAYBI ∑ Δ P =0,13+0,045+0,656+0,03+0,007+0,004+0,002+0,0005+0,04+0,5 =1,414 bar