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Company introduces new natural gas generator series

ENGINE ADJUSTMENTS
 The efficiency of the HSK78G is maintained by automatic engine adjustments, which account for fuel quality changes and quick load-step performance

ENGINE ADJUSTMENTS The efficiency of the HSK78G is maintained by automatic engine adjustments, which account for fuel quality changes and quick load-step performance

Photo by Creamer Media's Dylan Slater

6th December 2019

     

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Diesel and alternative fuel engines supplier Cummins will debut the HSK78G natural gas generator series during Middle East Electricity that is taking place from March 5 to 7, 2020 at the Dubai World Trade Centre.

The series offers a total package of gas generator capabilities and innovative gas technology for prime and peaking power applications.

With a power density of up to 2 MW from a 78 ℓ engine, the HSK78G generator series is designed to provide reliable power, regardless of the natural gas source or the climate, including extreme heat up to a blistering 55 ˚C and extreme altitudes.

This new series represents a bold step into the gas arena for Cummins that pushes new levels of efficiency, transient performance and gas variation well beyond former natural gas generators.

“The HSK78G models are suitable for a diverse set of industries from mining and manufacturing to shopping malls and hospitals,” says Cummins prime power segment and global sales support director Craig Wilkins.

The new generator series has been designed to push the boundaries of performance to extremes while achieving a low total cost of ownership.

Meanwhile, a high electrical efficiency of up to 44.2% (50 Hz) and 43.5% (60 Hz) is achieved on a range of pipeline natural gas down to 70 methane number without impacting power output and efficiency.

The barrier-breaking fuel flexibility of the HSK78G enables the use of low-cost, low-British thermal unit and free fuel sources, that would otherwise be considered waste products, delivering robust power even with aggressive fuels with minimal derating. By eliminating the need and the space required for gas-cleaning systems, customers can optimise their capital and operational expenditures.

The efficiency of the HSK78G is maintained by automatic engine adjustments, which account for fuel quality changes and quick load-step performance, without the need to calibrate or switch off the engine.

As a result, customers can expect more stability, greater uptime and lower fuel costs leading to lower total cost of ownership. In the case of a grid failure, the HSK78G can also switch to island mode, offering more reliability.

“It’s possible to burn pipeline natural gas, flare gas and biogas with high efficiency and low emissions without compromising on power output. New technology and electronic engine management systems allow the generator to automatically manage gas fuel quality fluctuations to ensure zero loss in performance via advanced on-board diagnostic control systems,” adds Wilkins.

In addition to better efficiency and lower cost of ownership, the HSK78G provides thermal efficiency at 47.1%, generating 2 110 kW of thermal output for heating, cooling and steam generation.

As a result, the HSK78G offers significant environmental benefits by recovering carbon dioxide, and the HSK78G’s superior heat exchange takes up less space, offering greater design flexibility. The models are capable of lowering nitrogen oxide (NOx) emissions down to 250 mg/Nm3 offering compliance with global regulations without the need for selective catalytic reduction.

The models are designed to achieve a 30% first load step at G1 with four steps to full load providing superior load pickup and load rejection transient capabilities, resulting in fewer voltage and frequency disturbances and faster recovery times.

As a result, customers can expect a more stable power supply, critical for island mode and emergency operations and a lower total cost of ownership.

The technology is driven by innovative tools like onboard spark plug sensors, NOx sensors, and real-time trend data collection. The full package of onboard HSK78G diagnostics minimises unscheduled downtime while enabling customers to accurately predict maintenance needs and optimise maintenance costs.

Coupled with the product capabilities, Cummins offers customers unrivalled peace of mind when it comes to servicing and maintaining the HSK78G. Best in class aftermarket capabilities are provided through dedicated local contacts, who are supported by a global system of service technicians, engineers and part distributions centres, experienced in offering and servicing natural gas solutions to fit any power need.

Edited by Zandile Mavuso
Creamer Media Senior Deputy Editor: Features

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