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Jenbacher, JGS 420 GS-N.L, 2013, Containerized Natural Gas Generator Set, 1,489 kW, 50 Hz

Reference V-2917

Brand Jenbacher

Model JGS 420 GS-N.L

Year built 2013

Condition Reconditioned genset (major overhaul December 2022) in a new container with new fittings

Quantity 1 machine



Overview

Containerized natural gas power plant with a Jenbacher JGS 420 GS-N.L generating set rated 1,489 kW electrical at 50 Hz / 400 V, 1,500 rpm.

New container and new fittings, fitted with the fully reconditioned generating set and new Dia.Ne XT4 control panels.

Generating set built in 2013. Major overhaul at 30,000 operating hours completed in December 2022 on the engine and the alternator; the overhaul record and the full parts list are available.

One unit is available now. Further units can be built to order with a lead time of about 6 months.

A 440 V / 60 Hz configuration is available as an option.

Option to switch to the EGHE (exhaust gas heat exchanger) 200 C configuration with by-pass.

Can be combined with a matching containerized Jenbacher JGS 320 unit (999 kW) as a package of about 2.5 MW.

Specifications

Brand: Jenbacher

Model: JGS 420 GS-N.L containerized generating set

Engine type: J 420 GS-B302

Year of the generating set: 2013

Electrical output: 1,489 kW (1,996.8 hp) at power factor 1.0

Voltage and frequency: 400 V, 50 Hz, 1,500 rpm (generator output rating)

Fuel: natural gas

Performance class G2 to ISO 8528, CE marked

Generating set mass: 14,850 kg (32,739 lb)

Container: 12,192 mm (40 ft) long, 2,990 mm (118 in) wide, 2,660 mm (105 in) high

Condition: reconditioned generating set in a new container

Scope of Supply

Container with new fittings, ventilation air inlet and air outlet.

Jenbacher J 420 GS-B302 gas engine and Leroy-Somer LSA 52.2 L70 alternator with Unitrol 1010 voltage regulator, on a common base frame.

Dia.Ne XT4 engine control and supervision panels.

Generator circuit breaker and switchgear panels.

Gas train with flow control valve.

Exhaust system with absorbent silencer and stack.

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.

Lube oil daily tank of 300 liters (79 US gal) with oil lines.

Process Circuits

Gas connection: design pressure 0.5 barg (7.3 psig), supply pressure 110 to 400 mbarg (1.6 to 5.8 psig), gas flow 376 Nm3/h.

Exhaust: 8,449 kg/h (18,627 lb/h) at 373 C (703 F) through the absorbent silencer to the stack.

High temperature circuit: 938 kW, 93 C (199 F) flow and 74 C (165 F) return, 47.5 m3/h (209 US gpm), ethylene glycol 37 percent.

Low temperature circuit: 113 kW, 45.5 C (114 F) flow and 40 C (104 F) return, ethylene glycol 37 percent, dry cooler 113 kW.

Overhaul Record (30,000 Hours, November to December 2022)

New pistons, cylinder liners, connecting rods with new bearing shells, main bearings, camshaft, cylinder head spacers and timing drive bearings; cylinder heads replaced.

Crankshaft measured on every crankpin and main journal and found within tolerance; crankshaft axial play 0.20 mm (0.008 in) after the overhaul.

New intercooler, water pump, turbocharger by-pass, deaeration filter, expansion vessels, fittings and anti-vibration mounts; reconditioned turbocharger; gas mixer, oil/water heat exchanger and thermostatic valve overhauled.

Alternator overhauled and tested in December 2022 (winding resistance, insulation, dielectric and no-load tests, result positive); alternator coupling replaced.

Pressure test completed. All parts not listed as reconditioned are new.

Performance at Full Load, Reference Conditions

Electrical output 1,489 kW (1,996.8 hp).

Mechanical output 1,529 kW (2,050.4 hp).

Fuel energy input 3,572 kW.

Gas quantity 376 Nm3/h (approximately 14,008 scf/h, converted with the data sheets own factor Sm3 = Nm3 x 1.055).

Electrical efficiency 41.7 percent.

Specific engine consumption 2.34 kWh/kWh.

Lower heating value of the gas used for the rating 9.5 kWh/Nm3.

Engine lube oil consumption approximately 0.46 kg/h (1.01 lb/h).

Part load 75 percent: 1,115 kW electrical, 289 Nm3/h gas, 40.5 percent electrical efficiency.

Part load 50 percent: 740 kW electrical, 203 Nm3/h gas, 38.3 percent electrical efficiency.

Emissions

NOx less than 250 mg/Nm3 at 5 percent O2.

Emission values of the containerized package: CO 300 mg/Nm3 and NOx 250 mg/Nm3, both at 5 percent O2.

Engine Data

Four stroke, V 70 degree cylinder arrangement, 20 cylinders.

Bore 145 mm (5.71 in), stroke 185 mm (7.28 in), displacement 61.10 liters (3,729 cu in).

Rated speed 1,500 rpm; mean piston speed 9.25 m/s (30.3 ft/s).

ISO standard power ISO-ICFN 1,529 kW (2,050.4 hp); brake mean effective pressure 20.00 bar (290 psi); compression ratio 12.50.

Reference methane number 94, minimum methane number 75.

Permitted gas pressure at the gas train inlet 120 to 200 mbar (1.7 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.

Engine length 3,750 mm (148 in), width 1,580

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