GENSET/ Roundup

Industry favouring gas gensets

Pakistan’s textile companies have led a national industrial trend to replace diesel generators with gas powered engines. Over the past decade textile operators have sought to tap into the nation’s supply of natural gas with generators that are more efficient and give off lower emissions.

One particular firm to have benefited from the trend is GE who last year sold 140 MW of Jenbacher gas engines in Pakistan, including the first installation of the J620, which at 3 MW is GE’s largest Jenbacher gas engine.

GE has said it is focussed on increasing the sales of its larger Jenbacher engines in the region, a strategy boosted by its J620 project in Lahore.

Barry Glickman, general manager for GE’s Jenbacher gas engine division, said: “After seeing the reliable performance of GE’s J620 GS model at Lahore, we are very confident, other customers will see the benefits of these dependable, efficient and cost-effective engines.”

GE’s portfolio of Jenbacher gas engines range in outputs of 0.25 to 3 MW. The engines are equipped with combustion systems, engine controls and monitoring technology to meet with international emissions standards.

Summer sun solution

As power demand rose and fell in parallel with the hot weather, the Long Island Power Authority of New York looked for a peaking solution that would give it flexibility while lowering costs and emissions. The result was a shift away from its usual heavy, liquid fuelled turbines in favour of more sprightly, portable reciprocating engine generators from Cummins.

Each generating unit supplied featured a 2 MW reciprocating engine generator equipped with emissions control technology. The units housed a 2150 gallon capacity tank for fuel, which is consumed at approximately 100 gallons per hour.

Cummins units stand ready to supply 88 MW of peaking electricity
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LIPA decided that in case of an emergency the smaller mobile units could be deployed to ‘hot spot’ distribution substations, whereas that would not be feasible with a 25 MW turbine.

Volvo launches its strongest industrial engine

Based on its six cylinder design Volvo Penta has launched a new 16 litre engine, describing it as its strongest industrial engine ever.

The new engine offers more power than its predecessor, with improved low rpm characteristics and up to 57 per cent more torque. Despite its power levels being increased to 604 kW, it is significantly more compact than the previous 16 litre engine.

Volvo has also raised the injection pressure to around 2000 bar resulting in lower fuel consumption and therefore lower nitrogen oxide and particle emissions. This is also aided by the fact that the fuel needs of the engine are analyzed up to 100 times per second. By controlling the injection levels and timing through fuel valves in the unit injectors, the engine always receives the amount of fuel that operating conditions demand.

For stationary application, the engine can be delivered in the Powerpac configuration, complete with frame and mounted radiator.

For generator use, the engine can be delivered complete with radiator, mounted on a special wooden transport frame. An alternative is the Genpac design, in which the engine is delivered as a complete unit, mounted on a pullout steel frame.

Like Volvo Penta’s 9 and 12 litre engines, the new 16 litre engine is a straight six. Developers claim the advantages this has over a V8 include less components, improved cooling ability, as well as a larger crank and crankshaft bearing space.

New features of Volvo Penta’s strongest engine include an electronic control system that provides added operational reliability and optimal combustion
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The engine can be connected to VOIDA, the portable service tool for testing, troubleshooting and diagnosis. The pocket sized device can also be used to adjust numerous parameters within the engine.

Caribbean extension

Wärtsilä is to deliver two generators to the national utility on Dutch St. Maarten, a small island in the Netherlands Antilles. The two 9L46 engines will have a total gross electrical output of 16 MW and will act as an extension of the existing 60 MW plant in Cole Bay. The two engines, costing $15.2m, are expected to be online in November 2005.

BP Rolls out new genset order

Rolls-Royce is to supply a further eight RB211 gas turbine generator sets for the Azeri oil project being developed by BP in the Caspian Sea.

The RB211 utilizes Dry Low Emissions combustion technology
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Four sets will generate electrical power, three sets will provide water injection pump drive on the process, compression, water injection and utilities platform of the development, while the eighth set, a main power generation unit, will be located on the adjacent drilling, utilities and quarters platform.

Rolls-Royce has supplied BP with 27 RB211 sets over the past three years for installation in the Caspian Sea oil fields and it has received more than $230m worth of orders on the project in Azerbaijan alone. The company signed a Rotating Equipment Initiative with BP in the year 2000, a deal that ensures equipment availability and competitive life cycle costs for BP and new product and aftermarket business opportunities for Rolls-Royce.

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