Waukesha gas engines Heat Rejection

HEAT REJECTION AND OPERATING DATA

MODEL 12V275GL+ w/ESM2, Fuel Flex, 0.3 g/hp-hr NOx
130°F AUXILIARY WATER TEMPERATURE
180°F JACKET WATER TEMPERATURE
BMEP ENGINE SPEED — RPM
(psi) 750 800 900 1000
228 2812 3000 3375 3750
200 2471 2636 2965 3295
HORSEPOWER
170 2101 2241 2521 2801
(BHP)
140 1730 1845 2076 2306
114 1409 1502 1690 1878
228 6796 6808 6857 6932

BRAKE SPEC 200 6868 6882 6939 7026

FUEL CONSUMPTION 170 6972 6990 7059 7162
(BTU/BHP-HR) 140 7122 7144 7230 7356
114 7314 7343 7450 7607
228 19113 20422 23141 25994
200 16972 18141 20578 23150
FUEL CONSUMPTION
170 14646 15661 17793 20059
(BTU/HR X 1000)
140 12319 13182 15007 16967
114 10303 11033 12593 14288
228 1915 2010 2195 2384

HEAT TO 200 1795 1886 2066 2250

JACKET WATER 170 1652 1739 1912 2091
(BTU/HR X 1000) 140 1496 1578 1745 1919
114 1351 1429 1591 1760
228 636 669 771 920

HEAT TO 200 599 631 731 878

LUBE OIL 170 558 589 686 831
(BTU/HR X 1000) 140 516 545 639 782
114 478 506 598 739
228 1996 2148 2433 2698
200 1539 1669 1913 2141
HEAT TO
INTERCOOLER 170 1097 1201 1400 1587
(BTU/HR X 1000) 140 712 792 945 1090
114 428 486 599 706
228 398 402 406 407
200 398 402 406 408
HEAT TO
RADIATION 170 397 401 405 407
(BTU/HR X 1000) 140 395 399 404 406
114 392 396 402 404
Continued

Page 1 of 6

Heat Rejection and Operating Data, Model 12V275GL+ Ref.

w/ESM2, Fuel Flex, 0.3 g/hp-hr NOx EN: E3001005
130°F Aux. Water Temperature
S
DATE: 9/20
180°F Jacket Water Temperature 9062-24
Waukesha gas engines Heat Rejection

HEAT REJECTION AND OPERATING DATA

MODEL 12V275GL+ w/ESM2, Fuel Flex, 0.3 g/hp-hr NOx
130°F AUXILIARY WATER TEMPERATURE
180°F JACKET WATER TEMPERATURE
BMEP ENGINE SPEED — RPM
(psi) 750 800 900 1000
228 7011 7558 8747 10043

TOTAL ENERGY 200 6351 6844 7916 9088

IN EXHAUST 170 5595 6029 6975 8015
(BTU/HR X 1000)
140 4797 5171 5991 6900
114 4069 4391 5102 5898
228 620 672 767 846
200 640 690 779 853
EXHAUST TEMP
AFTER TURBINE 170 662 709 792 860
(± 50° F)
140 684 728 805 867
114 704 745 817 874
228 9954 9756 9715 10015

INDUCTION 200 8714 8601 8667 9026

AIR FLOW 170 7405 7366 7521 7923
(SCFM) 140 6136 6151 6366 6792
114 5066 5113 5358 5787
228 44457 43650 43599 45043

EXHAUST 200 38930 38492 38893 40582

GAS FLOW 170 33094 32970 33745 35614
(LBS/HR) 140 27430 27535 28561 30518
114 22654 22892 24039 25993
228 0.30 0.30 0.30 0.30

NOX 200 0.30 0.30 0.30 0.30

EMISSION 170 0.30 0.30 0.30 0.30
(G/BHP-HR) 140 0.30 0.30 0.30 0.30
114 0.30 0.30 0.30 0.30
228 1.50 1.53 1.61 1.69
200 1.49 1.53 1.61 1.68
CO
EMISSION 170 1.48 1.52 1.60 1.68
(G/BHP-HR) 140 1.48 1.52 1.59 1.67
114 1.47 1.51 1.59 1.67
228 0.81 0.84 0.90 0.96
200 0.81 0.83 0.88 0.93
NMHC
EMISSION 170 0.84 0.85 0.89 0.92
(G/BHP-HR)
140 0.89 0.90 0.92 0.94
114 0.97 0.97 0.98 0.99
Continued

Page 2 of 6

Heat Rejection and Operating Data, Model 12V275GL+ Ref.

w/ESM2, Fuel Flex, 0.3 g/hp-hr NOx EN: E3001005
130°F Aux. Water Temperature
S
DATE: 9/20
180°F Jacket Water Temperature 9062-24
Waukesha gas engines Heat Rejection

HEAT REJECTION AND OPERATING DATA

MODEL 12V275GL+ w/ESM2, Fuel Flex, 0.3 g/hp-hr NOx
130°F AUXILIARY WATER TEMPERATURE
180°F JACKET WATER TEMPERATURE
BMEP ENGINE SPEED — RPM
(psi) 750 800 900 1000
228 4.07 4.22 4.51 4.80

THC 200 4.06 4.17 4.40 4.63

EMISSION 170 4.19 4.27 4.43 4.60
(G/BHP-HR)
140 4.47 4.52 4.62 4.72
114 4.85 4.87 4.92 4.96
228 394 394 397 402
200 398 399 402 407
CO2 EMISSION
170 404 405 409 415
(G/BHP-HR)
140 413 414 419 426
114 424 425 432 441
NOTES:
1. All data are based on ISO standard conditions of 29.54 inches Hg. barometric pressure, 77°F ambient and induction air
temperature, 30% relative humidity (0.3 inches Hg. water vapor pressure), 180°F engine jacket water outlet temperature.
2. All data are average values at the standard conditions and will vary for individual engines and with operating and ambient
conditions and with changes to ignition timing or air/fuel ratio. An adequate reserve should be used for cooling system or
heat recovery calculations. See also Cooling System Guidelines, S-6699-7, latest version.
3. ISO Standard (continuous) power ratings conform to ISO 3046/1, latest version, with a mechanical efficiency of 90% and
auxiliary water temperature, Tcra, of 130°F limited to ±±10° F.
4. Fuel standard: dry natural gas, 900 BTU/scf lower heating value (LHV), with a minimum Waukesha Knock Index of 95.
Refer to S-7884-7, latest version, for the full fuel specification.
5. 8.0:1 compression ratio.
6. Total Exhaust Energy includes both recoverable and non-recoverable heat. For a procedure to calculate recoverable heat
refer to S-8117-2, latest version.
7. Engine air/fuel ratio controlled by ESM2.
8. Reference Engine Ratings and Fuel Consumption Curve Sheet S-9062-22.
9. Exhaust flow at nominal 29.54 inches Hg. atmospheric pressure:

(Exh. Flow, lb/hr) x (Exh. Temp. ∘F + 460∘)

Flow rate: ACFM =
2250

Page 3 of 6

Heat Rejection and Operating Data, Model 12V275GL+ Ref.

w/ESM2, Fuel Flex, 0.3 g/hp-hr NOx EN: E3001005
130°F Aux. Water Temperature
S
DATE: 9/20
180°F Jacket Water Temperature 9062-24
Waukesha gas engines Heat Rejection

— Metric —
HEAT REJECTION AND OPERATING DATA
MODEL 12V275GL+ w/ESM2, Fuel Flex, 0.13 g/nm3 @ 5% O2
54°C auxiliary WATER TEMPERATURE
82°C JACKET WATER TEMPERATURE
BMEP ENGINE SPEED — RPM
(BAR) 750 800 900 1000
15.72 2097 2237 2517 2796
13.79 1843 1966 2211 2457
HORSEPOWER
11.72 1566 1671 1880 2088
(KW)
9.66 1290 1376 1548 1720
7.86 1050 1120 1260 1401
15.72 9389 9419 9513 9638

BRAKE SPEC 13.79 9485 9519 9625 9766

FUEL CONSUMPTION 11.72 9625 9665 9787 9953
(KJ/KWH) 9.66 9825 9873 10020 10220
7.86 10084 10141 10320 10565
15.72 5470 5854 6651 7487

FUEL 13.79 4856 5198 5913 6667

CONSUMPTION 11.72 4189 4486 5111 5775
(KW) 9.66 3521 3774 4309 4883
7.86 2943 3157 3614 4111
15.72 555 586 645 705

HEAT TO 13.79 522 551 609 667

JACKET WATER 11.72 482 510 565 621
(KW) 9.66 438 464 516 571
7.86 396 421 471 525
15.72 203 211 238 279
13.79 189 197 223 263
HEAT TO
LUBE OIL 11.72 174 181 207 246
(KW) 9.66 158 165 189 228
7.86 144 150 174 212
15.72 521 571 664 751
13.79 398 440 520 596
HEAT TO
INTERCOOLER 11.72 278 313 378 441
(KW) 9.66 176 202 253 303
7.86 100 120 159 197
15.72 115 117 119 120
13.79 115 117 119 121
HEAT TO
RADIATION 11.72 116 117 119 121
(KW) 9.66 115 117 119 121
7.86 115 116 119 120
Continued

Page 4 of 6
— Metric —
Heat Rejection and Operating Data, Model 12V275GL+ EN: E3001005
Ref.
w/ESM2, Fuel Flex, 0.13 g/nm3 @ 5% O2 S
DATE: 9/20
130°F Aux. Water Temperature 9062-24
180°F Jacket Water Temperature
Waukesha gas engines Heat Rejection

— Metric —
HEAT REJECTION AND OPERATING DATA
MODEL 12V275GL+ w/ESM2, Fuel Flex, 0.13 g/nm3 @ 5% O2
54°C auxiliary WATER TEMPERATURE
82°C JACKET WATER TEMPERATURE
BMEP ENGINE SPEED — RPM
(BAR) 750 800 900 1000
15.72 1979 2131 2467 2835

TOTAL ENERGY 13.79 1789 1927 2230 2563

IN EXHAUST 11.72 1572 1694 1962 2257
(KW)
9.66 1344 1450 1682 1940
7.86 1137 1229 1430 1656
15.72 320 349 402 446
13.79 331 359 409 450
EXHAUST TEMP
AFTER TURBINE 11.72 344 370 416 454
(± 28° C)
9.66 356 381 423 458
7.86 367 390 430 461
15.72 15096 14685 14463 14787

INDUCTION 13.79 13136 12880 12848 13274

AIR FLOW 11.72 11092 10968 11095 11601
(NM3/H) 9.66 9132 9106 9345 9899
7.86 7498 7531 7831 8398
15.72 20295 19780 19546 20033

EXHAUST 13.79 17666 17353 17363 17979

GAS FLOW 11.72 14924 14782 14994 15710
(KG/H) 9.66 12293 12276 12629 13401
7.86 10097 10156 10584 11367
15.72 0.13 0.13 0.13 0.13
13.79 0.13 0.13 0.13 0.13
NOX
EMISSION 11.72 0.13 0.13 0.13 0.13
(G/NM3 AT 5% O2) 9.66 0.13 0.13 0.13 0.12
7.86 0.12 0.12 0.12 0.12
15.72 0.67 0.69 0.72 0.74
13.79 0.66 0.68 0.71 0.73
CO
EMISSION 11.72 0.65 0.66 0.69 0.71
(G/NM3 AT 5% O2) 9.66 0.63 0.65 0.67 0.69
7.86 0.61 0.63 0.65 0.66
15.72 0.37 0.38 0.40 0.42
13.79 0.36 0.37 0.39 0.40
NMHC
EMISSION 11.72 0.37 0.37 0.38 0.39
(G/NM3 AT 5% O2)
9.66 0.38 0.39 0.39 0.39
7.86 0.40 0.40 0.40 0.40
Continued

Page 5 of 6
— Metric —
Heat Rejection and Operating Data, Model 12V275GL+ EN: E3001005
Ref.
w/ESM2, Fuel Flex, 0.13 g/nm3 @ 5% O2 S
DATE: 9/20
130°F Aux. Water Temperature 9062-24
180°F Jacket Water Temperature
Waukesha gas engines Heat Rejection

— Metric —
HEAT REJECTION AND OPERATING DATA
MODEL 12V275GL+ w/ESM2, Fuel Flex, 0.13 g/nm3 @ 5% O2
54°C auxiliary WATER TEMPERATURE
82°C JACKET WATER TEMPERATURE
BMEP ENGINE SPEED — RPM
(BAR) 750 800 900 1000
15.72 1.83 1.89 2.01 2.11

THC 13.79 1.80 1.85 1.94 2.01

EMISSION 11.72 1.83 1.86 1.91 1.95
(G/NM3 AT 5% O2)
9.66 1.91 1.93 1.95 1.95
7.86 2.02 2.02 2.00 1.98
15.72 177 177 177 177
13.79 177 177 177 177
CO2 EMISSION
11.72 177 177 177 176
(G/NM3 @ 5% O2)
9.66 176 176 176 176
7.86 176 176 176 176
NOTES:
1. All data are based on ISO standard conditions of 100 kPa barometric pressure, 25°C ambient and induction air
temperature, 30% relative humidity (1 kPa water vapor pressure), 82°C engine jacket water outlet temperature.
2. All data are average values at the standard conditions and will vary for individual engines and with operating and ambient
conditions and with changes to ignition timing or air/fuel ratio. An adequate reserve should be used for cooling system or
heat recovery calculations. See also Cooling System Guidelines, S-6699-7, latest version.
3. ISO Standard (continuous) power ratings conform to ISO 3046/1, latest version, with a mechanical efficiency of 90% and
auxiliary water temperature, Tcra, of 54.5°C limited to ±5.5°C.
4. Fuel standard: dry natural gas, 35.38 MJ/m3 [25, V (0; 101.325)] lower heating value (LHV), with a minimum Waukesha
Knock Index of 91. Refer to S-7884-7, latest version, for the full fuel specification.
5. 8.0:1 compression ratio.
6. Total Exhaust Energy includes both recoverable and non-recoverable heat. For a procedure to calculate recoverable heat
refer to S-8117-2, latest version.
7. Engine air/fuel ratio controlled by ESM2.
8. Reference Engine Ratings and Fuel Consumption Curve Sheet S-9062-21.
9. Exhaust flow at nominal 100 kPa atmospheric pressure:
 
(Exh.Flow, kg/hr) x (Exh.Temp. C + 273 )
Flow rate: m3/hr =
337

Page 6 of 6
— Metric —
Heat Rejection and Operating Data, Model 12V275GL+ EN: E3001005
Ref.
w/ESM2, Fuel Flex, 0.13 g/nm3 @ 5% O2 S
DATE: 9/20
130°F Aux. Water Temperature 9062-24
180°F Jacket Water Temperature