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Rolls-Royce, Bergen Engines, 2007, 3.5 MW, 50 Hz, Natural Gas Cogeneration Unit

Rolls-Royce, Bergen Engines, 2007, 3.5 MW, 50 Hz, Natural Gas Cogeneration Unit

Description

  1. Overview
    1. Roll-Royce Marine AS - Bergen engines
    2. Year 2007
    3. 50 Hz
    4. Power 3.5 MW/h
    5. Fuel type natural gas
    6. Engine: Roll-Royce Marine AS
    7. Worked hours 44150h
  2. Engine Specifications
    1. Number of cylinders: 18
    2. Cylinder bore: 250 mm
    3. Piston stroke: 300 mm
    4. Rated site power, engine: kW 3705
    5. Rated power (ISO), engine: kW 3745
    6. Rated active power, generator: kW 3555
    7. Generator efficiency: 0.96
    8. Rated output, electric with cos(phi) = 0.8: kVA 4445
    9. Mean effective site pressure: bar 16.8
    10. Mean effective pressure (ISO): bar 17
    11. Rated speed: rpm 1000
    12. Mean piston speed: m/s 10
    13. Displacement: l 265
  3. Gas Data
    1. Specific energy consumption: kJ/kWh 8155
    2. Gas consumption at MCR: m3n/h 840
    3. Gas consumption at MCR: kg/h 670
    4. Minimum gas feed at MCR at engine inlet: barg 2.9
    5. Minimum gas feed at MCR to pressure control module: barg 3.4
  4. Start Air Data
    1. Start air pressure, max./min.: barg 30/20
    2. Air consumption per start: m3n 4
    3. Number of starts, 1000 l receiver: 4
  5. Lubrication Data
    1. Lubrication oil: SAE40
    2. Main pump capacity: m3/h 68
    3. Priming pump capacity: m3/h 10
    4. Lubrication oil pressure normal: barg 4-5
    5. Lubrication oil pressure alarm, pressure low: barg 2.5
    6. Lubrication oil pressure shut-down, pressure low: barg 1.7
    7. Lubrication oil temperature engine inlet normal: °C 65
    8. Lubrication oil temperature engine inlet derating 15%/30%, temp high: °C 67/69
    9. Lubrication oil temperature engine inlet normal stop/shutdown: °C 71/73
    10. Specific lubrication oil consumption: g/kWh 0.4
    11. Lubrication oil consumption: kg/h 1.5
    12. Crankcase lubrication oil volume high level: l 3320
    13. Crankcase lubrication oil volume low level: l 2650
    14. Rocker arm system normal pressure: barg 0.5
    15. Rocker arm system alarm, pressure low: barg 0.2-0.3
  6. Cooling Water Data
    1. Two-stage charge air cooler low temperature stage temperature at inlet, max: °C 42
    2. Two-stage charge air cooler low temperature stage water flowrate, normal: m3/h 100
    3. Two-stage charge air cooler low temperature stage water flowrate, max: m3/h 150
    4. Two-stage charge air cooler high temperature stage water flowrate, normal: m3/h 117
    5. Jacket water system pump capacity: m3/h 117
    6. Jacket water system normal stop/shutdown: barg 2
    7. Jacket water system water quantity, engine block: l 620
    8. Jacket water system temperature at engine outlet normal: °C 90
    9. Jacket water system temperature at engine outlet alarm, temp high: °C 95
    10. Jacket water system temperature at engine outlet shut-down, temp high: °C 97
    11. Jacket water system temperature rise in engine, max: °C 4.6
    12. Jacket water system temperature rise in engine including high temp CA-cooler: °C 7.1
    13. Expansion tank volume, single-engined: l 300
    14. Expansion tank volume, multi-engined: l 500
    15. Expansion tank height above engine: m 3-10
  7. Air Data
    1. Turbocharger type: ABB TPS-57D_VTG
    2. Charge air cooler type: UB29/36
    3. Air consumption: m3n/h 16900
    4. Air consumption: kg/h 21900
    5. Charge air pressure: barg 1.7
    6. Charge air temperature normal: °C 55
    7. Charge air temperature derating 15%/30%, temp high: °C 58/60
    8. Charge air temperature normal stop/shutdown: °C 62/64
    9. Air pressure in engine room, min: mmWG 5
  8. Exhaust Data
    1. Mass flow: kg/h 22500
    2. Volume flow, after turbine: m3/h 46300
    3. Temperature, after cylinder: °C 495
    4. Temperature, after turbine: °C 445
    5. Back pressure, max: mmWG 400
    6. Emission at MCR NOx - emission at 5% O2: mg/m3n 250
    7. Emission at MCR CO - emission at 5% O2: mg/m3n 900
    8. Emission at MCR NMHC - emission at 5% O2: mg/m3n 250
  9. Heat Dissipation
    1. Lubrication oil cooler: MJ/h 1860
    2. Cooling water low temperature stage: MJ/h 895
    3. Cooling water high temperature stage: MJ/h 1225
    4. Jacket water cooler heat dissipation, engine: MJ/h 2240
    5. Jacket water cooler heat dissipation including high temp CA-cooler: MJ/h 3465
  10. Ventilation Data
    1. Radiation engine: MJ/h 945
    2. Radiation generator (IP23): MJ/h 540
  11. Reference Conditions and Notes
    1. Engine power definition is according to ISO 3046-1 and ISO 8528-1. However the engine ratings are valid for the following reference conditions: air inlet temperature max. +38°C, air inlet temperature min. +5°C, heat dissipation +25°C, charge air low temp cooling water inlet temp max. +42°C, site altitude above sea level max. 258 m, relative humidity 60%.
    2. Charge air cooler heat dissipation will vary with water flowrate and inlet temp, these data to be calculated after receipt of final process data.
    3. Specific energy consumption is according to ISO 3046-1 and is given at full load (MCR), running on natural gas with a lower heating value of 36.0 MJ/m3n and two engine-driven pumps.
    4. Methane number min 70, according to AVL calculation.
    5. Specific lubrication oil consumption is for guidance only.