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Wartsila, 20V34DF, 2022, 9.75 MW, Dual Fuel Gas Engines, 50Hz

Wartsila, 20V34DF, 2022, 9.75 MW, Dual Fuel Gas Engines, 50Hz Sold

Description

  1. Overview
    1. Gross electrical output approximately 9.75 mw each
    2. Type 20v34df
    3. Dual fuel gas engines
    4. Can be operated with heating oil or heavy oil
    5. Year 2022
    6. Complete new with warranty
    7. The prime movers consist of 2 x wartsila 20v34df type engines, capable of operating on 99% natural gas with one percent (1%) of the energy input provided by diesel fuel as the pilot fuel to initiate ignition or operating on 100% diesel fuel
    8. The sets are capable of switching fuels during operation
    9. Indicative performance values are presented below; final performance will be provided and can be guaranteed after receipt of contract fuel specifications and contract design basis ambient conditions
  2. Configuration
    1. Individual generator set
    2. Type 20v34df: gross output on gas 9780 kwe, plant net output 19,560 kwe, net heat rate per unit 8135 kj/kwh
    3. Type 20v34df: gross output on lfo 9780 kwe, plant net output 19,560 kwe, net heat rate per unit 8640 kj/kwh
  3. Engine Specifications
    1. Wartsila 34df: imo tier iii, epa t3
    2. Cylinder bore: 340 mm
    3. Piston stroke: 400 mm
    4. Cylinder output: 480, 500 kw/cyl
    5. Speed: 720, 750 rpm
    6. Mean effective pressure: 22.0 bar
    7. Piston speed: 9.6, 10.0 m/s
    8. Generator voltage: 0.4-13.8 m
    9. Generator efficiency: 0.95-0.97
    10. Fuel specification: fuel oil 700 cst/50°c 7200 sr1/100°f, iso 8217 category iso-f-dmx, dma and dmb
    11. Bsec: 7590 kj/kwh
    12. Bsgc: 7490 kj/kwh
  4. Performance Conditions
    1. Net performance values above are given at the high side of an assumed step up transformer(s)
    2. Basis temperature for output and heat rate: 30 °c
    3. Basis relative humidity for output and heat rate: 50 %
    4. Fuel gas methane number, minimum: 80
    5. Maximum site ambient temperature: 35 °c
    6. Minimum site ambient temperature: 15 °c
    7. Altitude, maximum: 100 m
    8. Generator voltage: 11000 v
    9. Frequency: 50 hz
    10. Power factor: 0.8
    11. Service voltage: 400 v
  5. Performance Data
    1. Rated electrical power: 9 795 kw
    2. Electrical efficiency (%): gas: 48.6, lfo: 45.6
    3. Heat rate at generator terminals: gas: 7 404, lfo: 7 898
    4. Loading and unloading connected to grid: full load
    5. Regular start time (min:sec) 00:30: < 5
    6. Fast start time (min:sec) 00:30: < 2
    7. Stop time (min) 1:
    8. Ramp rate (hot, load/min): > 100%
    9. Minimum load unit level: 10%
    10. Minimum load plant level: 1%
  6. Lubrication Specifications
    1. Net lube oil cons. @ mcr: 0.25 g/kwh (w20v34sg), 0.25 g/kwh (w20v34df gas), 0.35 g/kwh (w20v34df ifo), 0.25 g/kwh (w18vs0sg/df)
    2. Gross lube oil cons.: 0.35 g/kwh (w20v34sg), 0.35 g/kwh (w20v34df gas), 0.45 g/kwh (w20v34df ifo), 0.35 g/kwh (w18vs0sg/df)
    3. Wet sump vol.: 5,300 dm3 or liter (w20v34sg), 5,300 dm3 or liter (w20v34df gas), 5,300 dm3 or liter (w20v34df ifo), 12,500 dm3 or liter (w18vs0sg/df)
    4. Wet sump vol. (0.92 kg/dm3): 4 876 kg (w20v34sg), 4 876 kg (w20v34df gas), 4 876 kg (w20v34df ifo), 11500 kg (w18vs0sg/df)
    5. Oil change interval: 16,000 rh (w20v34sg), 16,000 rh (w20v34df gas), 16,000 rh (w20v34df ifo), 16,000 rh (w18vs0sg/df)
    6. Oil change int. max: 4 years (w20v34sg), 4 years (w20v34df gas), 4 years (w20v34df ifo), 4 years (w18vs0sg/df)
    7. Mcr (shaft power): 10,000 kw (w20v34sg), 10,000 kw (w20v34df gas), 10,000 kw (w20v34df ifo), 18,810 kw (w18vs0sg/df)
    8. Guarantee values in agreements (net consumption excl. oil exchange): 2.8 kg/h (w20v34sg), 2.8 kg/h (w20v34df gas), 3.9 kg/h (w20v34df ifo), 5.2 kg/h (w18vs0sg/df)
    9. Guarantee values in agreements (gross lube oil consumption): 3.5 kg/h (w20v34sg), 3.5 kg/h (w20v34df gas), 4.5 kg/h (w20v34df ifo), 6.6 kg/h (w18vs0sg/df)
    10. The net lube oil cons. is increased with a factor of 1.1 (degradation, measurement uncertainty and contingency) and multiplied with the engine specific mcr (shaft power)
    11. The gross lube oil cons. is multiplied with the engine specific mcr (shaft power)
  7. Reference Conditions
    1. The output is available within a range of ambient conditions and coolant temperatures
    2. The required fuel quality for maximum output is specified in the section fuel characteristics
    3. For ambient conditions or fuel qualities outside the specification, the output may have to be reduced
    4. The specific fuel consumption is a statement engines operating in ambient conditions according to iso 15550:2002 (e)
    5. Total barometric pressure: 100 kpa
    6. Air temperature: 25 °c
    7. Relative humidity: 30 %
    8. Charge air coolant temperature: 25°c
  8. Engine Block
    1. The engine block, made of nodular cast iron, is cast in one piece for all cylinder numbers
    2. It has a stiff and durable design to absorb internal forces and enable the engine to be resiliently mounted without any intermediate foundations
    3. The engine has an underslung crankshaft held in place by main bearing caps
    4. The main bearing caps, made of nodular cast iron, are fixed from below by two hydraulically tensioned screws
    5. They are guided sideways by the engine block at the top as well as at the bottom
    6. Hydraulically tightened horizontal side screws at the lower guiding provide a very rigid crankshaft bearing
    7. A hydraulic jack, supported in the oil sump, offers the possibility to lower and lift the main bearing caps, e.g. when inspecting the bearings
    8. Lubricating oil is led to the bearings and piston through this jack
    9. A combined flywheel/thrust bearing is located at the driving end of the engine
    10. The oil sump, a light welded design, is mounted on the engine block from below and sealed by o-rings
    11. The oil sump is available in two alternative designs, wet or dry sump, depending on the type of application
    12. The wet oil sump comprises, in addition to a suction pipe to the lube oil pump, also the main distributing pipe for lube oil as well as suction pipes and a return connection for the separator
    13. The dry sump is drained at either end (free choice) to a separate system oil tank
  9. Crankshaft
    1. The crankshaft design is based on a reliability philosophy with very low bearing loads
    2. High axial and torsional rigidity is achieved by a moderate bore to stroke ratio
    3. The crankshaft satisfies the requirements of all classification societies
    4. The crankshaft is forged in one piece and mounted on the engine block in an under-slung way
    5. In v-engines the connecting rods are arranged side-by-side on the same crank pin in order to obtain a high degree of standardization
    6. The journals are of same size regardless of number of cylinders
    7. The crankshaft is fully balanced to counteract bearing loads from eccentric masses by fitting counterweights in every crank web
    8. This results in an even and thick oil film for all bearings
    9. If necessary, the crankshaft is provided with a torsional vibration damper
  10. Connecting Rod
    1. The connecting rods are of three-piece design, which makes it possible to pull a piston without opening the big end bearing
    2. Extensive research and development has been made to develop a connecting rod