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Jenbacher, JGS 320 GS-N.L, Containerized Natural Gas Generator Set, 999 kW, 50 Hz

Jenbacher, JGS 320 GS-N.L, Containerized Natural Gas Generator Set, 999 kW, 50 Hz

Description

  1. Overview
    1. Containerized natural gas power plant with a Jenbacher JGS 320 GS-N.L generating set rated 999 kW electrical at 50 Hz / 400 V, 1,500 rpm.
    2. New container and new fittings, fitted with the fully reconditioned generating set and new Dia.Ne XT4 control panels.
    3. Engine overhauled in 2023. Components are new or reconditioned.
    4. Two identical units are available now. Further units can be built to order with a lead time of about 6 months.
    5. Accessories and piping are partly installed and partly packed, as these are new systems.
    6. An overhaul report for the generating set, drawings and engine data sheets are available.
    7. Further customization can be discussed.
    8. A 440 V / 60 Hz configuration is available as an option.
    9. Can be combined with a matching containerized Jenbacher JGS 420 unit (1,489 kW) as a package of about 2.5 MW.
  2. Specifications
    1. Brand: Jenbacher
    2. Model: JGS 320 GS-N.L containerized generating set
    3. Engine type: J 320 GS-C02
    4. Electrical output: 999 kW (1,339.7 hp) at power factor 1.0
    5. Voltage and frequency: 400 V, 50 Hz, 1,500 rpm (generator output rating)
    6. Fuel: natural gas
    7. Alternator: Stamford PE 734 C
    8. Ignition controller: Jenbacher MIC950
    9. Control and supervision: Dia.Ne XT4
    10. Container: 12,192 mm (40 ft) long, 2,990 mm (118 in) wide, 2,660 mm (105 in) high
    11. Condition: reconditioned generating set in a new container
  3. Scope of Supply
    1. Container with new fittings, ventilation air inlet and air outlet.
    2. Jenbacher J 320 GS-C02 gas engine and Stamford PE 734 C alternator on a common base frame.
    3. Dia.Ne XT4 engine control and supervision panels.
    4. Generator circuit breaker and switchgear panels.
    5. Gas train with flow control valve.
    6. Exhaust system with absorbent silencer and stack.
    7. Roof-mounted dry coolers for the engine jacket water (high temperature) and intercooler (low temperature) circuits, with circulation pumps, expansion vessels and 3-way valves.
    8. Lube oil daily tank of 300 liters (79 US gal) with oil lines.
  4. Process Circuits
    1. Gas connection: design pressure 0.5 barg (7.3 psig), supply pressure 110 to 400 mbarg (1.6 to 5.8 psig), gas flow 266 Nm3/h.
    2. Exhaust: 5,604 kg/h (12,355 lb/h) at 439 C (822 F) through the absorbent silencer to the stack.
    3. High temperature circuit: 621 kW, 93 C (199 F) flow and 74 C (165 F) return, 31.5 m3/h (139 US gpm), ethylene glycol 37 percent, dry cooler 621 kW.
    4. Low temperature circuit: 88 kW, 43.4 C (110 F) flow and 40 C (104 F) return, 25 m3/h (110 US gpm), ethylene glycol 37 percent, dry cooler 88 kW.
  5. Performance at Full Load, Reference Conditions
    1. Electrical output 999 kW (1,339.7 hp).
    2. Mechanical output 1,029 kW (1,379.9 hp).
    3. Fuel energy input 2,525 kW.
    4. Gas quantity 266 Nm3/h (approximately 9,910 scf/h, converted with the data sheet's own factor Sm3 = Nm3 x 1.055).
    5. Electrical efficiency 39.6 percent.
    6. Specific engine consumption 2.45 kWh/kWh.
    7. Lower heating value of the gas used for the rating 9.5 kWh/Nm3.
    8. Engine lube oil consumption approximately 0.31 kg/h (0.68 lb/h).
    9. Part load 75 percent: 796 kW electrical, 217 Nm3/h gas, 38.7 percent electrical efficiency.
    10. Part load 50 percent: 529 kW electrical, 152 Nm3/h gas, 36.6 percent electrical efficiency.
    11. The standard JGS 320 rating is up to 1,067 kW gross, subject to the local grid code; these units are rated 999 kW.
  6. Emissions
    1. NOx less than 250 mg/Nm3 at 5 percent O2.
  7. Engine Data
    1. Four stroke, V 70 degree cylinder arrangement, 20 cylinders.
    2. Bore 135 mm (5.31 in), stroke 170 mm (6.69 in), displacement 48.67 liters (2,970 cu in).
    3. Rated speed 1,500 rpm; mean piston speed 8.50 m/s (27.9 ft/s).
    4. ISO standard power ISO-ICFN 1,029 kW (1,379.9 hp); brake mean effective pressure 18.00 bar (261 psi); compression ratio 12.50.
    5. Reference methane number 94, minimum methane number 60.
    6. Permitted gas pressure at the gas train inlet 80 to 200 mbar (1.2 to 2.9 psi), lower gas pressure on request; permitted gas flow pressure range plus or minus 10 percent; maximum rate of gas pressure change 10 mbar/s.
    7. Engine length 3,320 mm (131 in), width 1,358 mm (53.5 in), height 2,065 mm (81.3 in); dry weight 5,200 kg (11,464 lb), 5,700 kg (12,566 lb) ready for operation.
    8. Flywheel moment of inertia 8.61 kgm2; direction of rotation seen from the flywheel end: left hand.
    9. Starter motor 7 kW (9.4 hp), 24 V.
    10. Specific lube oil consumption 0.30 g/kWh; maximum oil temperature 90 C (194 F); maximum engine cooling water temperature 95 C (203 F); oil change volume approximately 342 liters (90 US gal).
  8. Generator Data
    1. Generator manufacturer Stamford, type PE 734 C.
    2. Rated apparent power 1,335 kVA.
    3. Active power at cos phi 1.0: 999 kW; at cos phi 0.8: 988 kW.
    4. Apparent power at cos phi 0.8: 1,235 kVA; rated reactive power 741 kVar; rated current at cos phi 0.8: 1,782 A.
    5. Frequency 50 Hz, voltage 400 V, speed 1,500 rpm, runaway speed 2,250 rpm.
    6. Power factor range 0.8 to 1.0.
    7. Efficiency at cos phi 1.0: 97.1 percent; at cos phi 0.8: 96.0 percent.
    8. Flywheel moment of inertia 36.33 kgm2; mass 2,967 kg (6,541 lb).
    9. Construction form B3/B14; protection IP 23; insulation class H; temperature rise class F; maximum ambient temperature 40 C (104 F).
    10. Reactances (saturated): xd 2.51 p.u., xd' 0.15 p.u., xd'' 0.11 p.u.; Td'' 10 ms, Ta 20 ms, Tdo' 2.23 s.
  9. Genset Main Dimensions and Weights
    1. Generating set approximately 5,700 x 1,700 x 2,300 mm (224 x 67 x 91 in).
    2. Dry weight approximately 15,500 kg (34,172 lb); weight ready for operation approximately 16,000 kg (35,274 lb).
  10. Exhaust and Combustion Air Data
    1. Exhaust gas temperature at full load 439 C (822 F); approximately 461 C (862 F) at BMEP 13.5 bar and 485 C (905 F) at BMEP 9 bar.
    2. Wet exhaust gas mass flow 5,604 kg/h (12,355 lb/h); dry 5,196 kg/h (11,455 lb/h).
    3. Wet exhaust gas volume 4,430 Nm3/h; dry 3,940 Nm3/h.
    4. Maximum exhaust back pressure at the engine outlet 60 mbar (0.87 psi).
    5. Combustion air mass flow 5,423 kg/h (11,955 lb/h), air volume 5,195 Nm3/h; maximum pressure drop across the intake air filters 10 mbar.
  11. Recoverable and Dissipated Heat
    1. Total exhaust gas heat 715 kW; exhaust gas cooled to 180 C (356 F): 455 kW; cooled to 100 C (212 F): 590 kW.
    2. Intercooler total 265 kW: first stage on the engine water circuit 177 kW, second stage on the low temperature circuit 88 kW.
    3. Lube oil heat 121 kW; engine jacket cooling water heat 323 kW.
    4. Radiated surface heat of the set approximately 90 kW; engine alone 49 kW.
  12. Cooling Circuit Data
    1. Engine cooling water circuit nominal pressure PN 10 (operating pressure 6 bar / 87 psi), pressure drop 0.20 bar; safety valves 2.50 bar (36 psi).
    2. Maximum permissible engine cooling water temperature at the engine outlet 93 C (199 F); engine cooling water flow 31.5 m3/h (139 US gpm).
    3. First stage intercooler: 177 kW, maximum cooling water inlet temperature 77.7 C (172 F), water side pressure drop 0.40 bar.
    4. Second stage intercooler: 88 kW, maximum cooling water inlet temperature 40 C (104 F), cooling water flow 25.0 m3/h (110 US gpm), water side pressure drop 0.20 bar.
  13. Connections
    1. Engine cooling water inlet and outlet DN 80 / PN 10.
    2. Exhaust gas outlet DN 250 / PN 10.
    3. Combustion gas at the gas train inlet DN 80 / PN 16; at the genset DN 100 / PN 10.
    4. First stage intercooler water DN 80 / PN 10; second stage intercooler water DN 65 / PN 10.
  14. Noise Data
    1. Residual noise level of the containerized unit in free field without reflection: 65 plus or minus 3 dB(A) at 10 m (33 ft).
    2. Generating set alone: sound pressure 96 dB(A) at 1 m (3.3 ft); exhaust 122 dB(A) at 1 m; sound power 117 dB(A) (set) and 130 dB(A) (exhaust).
  15. Container Package Dimensions
    1. Container 12,192 mm (40 ft) long and 2,990 mm (118 in) wide.
    2. Container height 2,660 mm (105 in); roof-mounted equipment 1,955 mm (77 in) above the container roof; exhaust stack top 10,000 mm (32.8 ft) above grade.
  16. Options
    1. 440 V / 60 Hz configuration.
    2. Exhaust gas heat exchanger (EGHE) at 200 C (392 F) with by-pass.
    3. For units built to order: high-altitude version (up to 35 C and 1,990 m / 6,529 ft), hot-climate version (up to 40 C and 500 m / 1,640 ft), corrosive environment class C4-M, CO catalyst (CO below 800 mg/Nm3, HCOH below 150 mg/Nm3), heat recovery from the jacket water circuit at 65 to 85 C (149 to 185 F), galvanized parapets and ladders, structure for exhaust gas sampling.
  17. Standard Design Conditions
    1. Ambient temperature -10 to +35 C (14 to 95 F), altitude up to 500 m (1,640 ft) above sea level, corrosion class C3-M, CE marked.
    2. Ratings to DIN-ISO 3046 and DIN 6271 at the stated reference conditions and methane number; recoverable thermal output tolerance plus or minus 8 percent.