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7/24/2019 T Cooler AKG
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7/24/2019 T Cooler AKG
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11 11
Features
High effic iency cooling systems made from Aluminium
High performance a nd working pressure - even for heavy duty
hydraulic and lubrication applications
Maximum working pressure
T1 -T8 26 ba r
T9 -T11 10 ba r
Offering high flexibility for usa ge with trans mission, engine, hydraulic and
lubrication oils
May be also used as off-line co olers
Co oling sys tems ca n be fitted with 12V/24V DC, 3 phase or hydraulic moto rs
Benef i ts Short lead times
Cost effective
Cooling systems fully equipped for
immediate use
Spares from stock
Robust design, tried and tested for
many years
Maintenance free
Low noise levels
Appl icat ions
The units can be
used for cooling: mineral oil, s ynthetic o il, b io oil, HFA B C D liquids,
wa ter/glyco l mixture, conta ining 50% a ntifreezeand corrosion inhibitors
Function: Heat will be transferred from the fluid to the cooling
air flow
Options
Temperature regulator
Off-line cooler packages w ith integral pump
6 0 H z ele c tric m otors
Pusher fans (standard equipment is puller fans)
(T
)(T
)
Please note:
Set up and operating instructions
General Terms of Sales and
Delivery
Spares list
General
Our Trange is designed to help you find an
individual solution for your cooling applica-tion.
Our cooling sys tems o ffer a wide variety of
products w hich ha ve been fully tried and
tested even under the most arduous
working conditions.
A range of 11 basic types covers almost all
cooling applications involving a large variety
of fluids in stationary and mobile machines.
AKG a nd its representa tives a s expe rts in
the field of cooling systems will be delighted
to assist you.
As part of our ongoing technical improve-ments, AKG maintains the right to introduce
modifications to the specifications in this
brochure.
Y o u r p a r t n e r f o r h y d r a u l i c c o o l e r s
Oil/Air-Cooling Systems
AKG-RangeT1 - T11
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7/24/2019 T Cooler AKG
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Lubrication oil applicationsHydrauli c appli cations
B u i l d i n g M a c h i n e s , C o m p r e s s o r s , C r a n e s , C r a w l e r s , D r i l l s , E x c a v a t o r s , G r a d e r s , L o a d e r s , P i p e L a y e r s , S c r a p e r s , S c r e w C o m p r e s s o r s , V i b r a t i o n R o l l e r s , M a c h i n e s ,
Easy sizing of T-c ool ers
The following ta bles ma y be us ed to q uickly selec t a T-coo ler.
The da ta is ba sed o n the ass umption that oil inlet temperature does not e xceed 70 C for
hydraulic and 110 C fo r lubrication ap plica tions.
Please use the following heat rejection figures if no details are available:
- Agricultural and co nstruction machinery: 1/3 of Diese l eng ine pow er
- Hydraulic pumps driven by an electric motor: 1/3 of electric motor pow er
Heat re ject ion [kW @ 30 C ambi ent temperature]
Oil flow T1 T2 T3 T4 T5K T5 T6 T7 T8 T8S T9 T10 T11
in l/min
10 2 4 6
20 3 6 8 11 15
30 4 7 10 13 17
50 5 8 12 15 18 21 28 32 39 46
75 5.5 9 13 17 20 23 30 34 42 52 80
100 10 14 18 21 24 31 36 44 56 86 112
150 16 19 23 26 34 38 48 63 93 128 167
200 28 35 40 50 68 100 140 180
250 51 72 108 148 193
300 112 156 208400 120 168 228
500 180 248
600 264
Heat re ject ion [kW @ 40 C ambi ent temperature]
Oil flow T1 T2 T3 T4 T5K T5 T6 T7 T8 T8S T9 T10 T11
in l/min
10 1.5 3 520 2.5 4 6 8 11
30 3 5 7 10 13
50 3.5 6 9 11 14 16 21 24 29 35
75 4 7 10 12 15 17 22 26 31 39 60
100 8 11 13 16 18 23 27 33 42 65 84
150 12 14 17 20 25 29 36 47 70 96 125
200 21 26 30 37 51 75 105 135
250 38 54 81 111 145
300 84 117 156
400 90 126 171
500 135 186
600 198
Easy sizing of T-c ooler s
For a more detailed and customised cooler selection exact temperatures and flows are necessary.
Please select your cooler according to the example on page 10 or seek advice from AKG or its
representatives.
Heat re ject ion [kW @ 30 C ambi ent temperature ]
Oil flow T1 T2 T3 T4 T5K T5 T6 T7 T8 T8S T 9 T 10 T 11
in l/min
10 4 8 12
20 6.5 11 16 22 30
30 8 14 19 26 34 35
50 9.5 17 23 30 37 42 55 64 78 93
75 10.5 19 26 34 40 46 60 69 83 104 160
100 21 28 35 42 49 62 72 88 112 172 224
150 32 38 46 53 67 77 96 126 187 256 330
200 56 70 80 100 136 200 280 360
250 102 144 216 296 387
300 224 312 416400 240 336 456
500 360 496
600 528
Heat re ject ion [kW @ 40 C ambi ent temperature ]
Oil flow T1 T2 T3 T4 T5K T5 T6 T7 T8 T8S T 9 T 10 T 11
in l/min
10 3.5 7 1120 5.5 10 14 20 27
30 7 12 17 22 30
50 8 14 20 27 32 37 48 56 69 81
75 9 16 22 29 35 40 53 60 73 91 140
100 18 24 31 37 43 55 63 77 98 150 196
150 28 33 40 46 59 67 84 110 163 224 292
200 49 62 70 88 119 175 245 315
250 90 126 189 259 338
300 196 273 364
400 210 294 399
500 315 434
600 462
Hydraul ic appl ications Lubrication oi l appl ications
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8 9
2
1,8
1,6
1,4
1,2
1
0,8
0,6
0,4
0,2
50 100 150 200 250 300
Speci f ic heat re ject ion T1 - T8
T8 S
T8
T7
T6
T5
T5 K
T4T3
T2
T1
Speci f ic heat re ject ion T9 - T11
8
7
6
5
4
3
2
1
100 200 300 400 500 600
T11
T11 L
T10
T10 L
T9
T9 L
100 200 300 400 500 600
Pressure drop T9 - T11
4
3,5
3
2,5
2
1,5
1
0,5
p @ 30cSt viscosity
Oil flow (l/min)
Oil flow (l/min)Oil flow (l/min)
PK/ETD (k W/K) PK/ETD (kW /K)
Pressure drop T1 - T8
50 100 150 200 250
Oil flow (l/min)
1,8
1,6
1,4
1,2
1
0,8
0,6
0,4
0,2
p @ 30 cSt viscosity
0
0
0
0
T10
T9
T11
T1
T2
T5 K T3
T7
T6
T5 T4 T8
To c alculate p ressure drop da ta a t other viscos ities pleas e look at exa mple on pag e 11.
T8L
T7L
T6L
T5LT4LT3L
T2L
T o o l s , C a s t i n g M a c h i n e s , E l e v a t o r s , E x t r u s i o n M a c h i n e s , F o r g i n g M a n i p u l a t o r s , F o r g i n g P r e s s e s , G e a r s , H y d r a u l i c S y s t e m s , P i p e B e n d i n g M a c h i n e s , P r e s s e s , P u m p s ,
To ca lculate pressure drop d ata at o ther visco sities pleas e look at e xample on pa ge 11.
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10 11
Conversion factors for dif ferent oi l pressure drops
The pressure drop curves on pa ges 8 and 9 a re based on a visco sity of 30 mm 2/s = 30 cSt.
Pleas e use conversion fac tor f to ca lculate p ressure drop a t other visco sities.
Example:
Pres sure drop of typ e T7 is 1.3 ba r @ 150 l/min and 30 mm2/s.
Assume an o il type ISO VG 46 is used @ 60 C ha ving a visco sity of 20 mm2/s.
To c alculate new pressure drop multiply 1.3 bar by f = 0.75 to obta in the a ctual pressure drop 1 ba r
approximately.
Notes:
mm 2 10 15 20 30 40 50 60 80 100s
f 0.5 0.65 0.75 1.0 1.2 1.4 1.6 2.1 2.8
Select ing a cool ing system
To se lect a c oo ler for your application, the following da ta is required:
Heat rejection: Alternative terminology is dissipation
Oil flow: Circulating oil flow determines the cooler size
Oil inlet temperature: Tempe rature of the oil entering the c ooler
Cooling air flow temperature: Air temperature at cooler face before entering matrix
100
0.3
Oil flow [l/min]
p[bar]
5025
0.32
75Oil flow [l/min]
P shrETD T4
1. Determinati on of input data
Preq [kW] Heat rejection
VOil [l/min] Oil flow
TOil [C] Oil inlet te mpera ture
Tcaf[C] Cooling air flow temperature
2. Specif ic heat reject ion
ETD [K] = TOil - Tcaf Entering Tempe rature Difference
Prshr [kW/K] = Preq/ ETD required specific heat rejection
3. Select according to di agram
Pshr/ETD [kW/K] ac tual spec ific heat rejection
P = (Pshr/ETD) x ETD ac tual heat rejection
4. Pressure drop /Oil temperature diff erence
Obtain pressure drop @ 30 cST oil visco sity from d iagram
on pa ge 8. To ca lculate for other oil viscos ities plea se us e
example on page 11.
TOil [C] = 33 x P[kW] / VOil[l/min]
5. Results
, cSt
R o l l i n g P l a n t s , S l a b S h e a r s , S c r a p S h e a r s , T r a n s p o r t E q u i p m e n t , V a c u u m P u m p s , A g r i c u l t u r e C h a f f c u t t e r s , C o m b i n e s , F o r e s t r y M a c h i n e s , H a r v e s t M a c h i n e s , T r a c t o r s
Example
P req = 12 kW
VOil = 50 l/min
TOil = 70 C
Tca f = 30 C
ETD [K] = TOil - Tca f = > 70 C - 30 C = 40 C (= 40 K)
P rshr = P req/ETD = > 12 kW /4 0 K = 0.3 kW/K
P shr /ETD = 0.3 2 kW/K (>= P rshr = 0.3 kW/K)=>T4
P = 0.32 kW/K x 40 K = 12.8 kW
TOil = 33 x (12.8 kW /50 l/min) = 8.4 C
selected cooler T4: heat rejection 12.8 kW,oil temperature difference 8.4 C,
pressure drop 0.3 bar
T4
50 150