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Cummins debuts new gas generator
Cummins has debuted the HSK78G natural gas generator series at the 2019 Middle East Electricity (MEE) at the Dubai World Trade Centre.
The equipment is expected to fuel the next generation of power and offer a total package of gas generator capabilities and innovative gas technology for prime and peaking power applications.
With a power density of up to 2.0MW from a 78L 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 131 degrees Fahrenheit (55 degrees Celsius) and extreme altitudes.
According to Cummins, the new technology 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," said Craig Wilkins, Director of Cummins Prime Power Segment and Global Sales Support.
"The new generator series have been designed to push the boundaries of performance to extremes while achieving a low total cost of ownership," adds Wilkins.
Wilkins the generator has a high electrical efficiency of up to 44.2 percent (50Hz) and 43.5 percent (60Hz) achieved on a wide range of pipeline natural gas down to 70 methane number (MN) without impacting power output and efficiency.
In addition, the barrier-breaking fuel flexibility of the HSK78G enables the utilization of low-cost, low-BTU and free fuel sources, that would otherwise be considered waste products, delivering robust power even with very aggressive fuels with minimal derating.
"By eliminating the need and the space required for gas-cleaning systems customers can optimize their capital (CapEx) and operational (OpEx) expenditures."
Wilkins said 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.
He said customers can expect more stability, greater uptime and lower fuel costs leading to lower total cost of ownership.
The manufacturer also boost that the HSK78G can also switch to island mode offering more reliability, in case of a grid failure.
"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," added Wilkins.
Other extras are that the HSK78G provides thermal efficiency at 47.1 percent, generating 2110kW of thermal output for heating, cooling and steam generation.
As a result, the HSK78G offers significant environmental benefits by recovering CO2, and the HSK78G's superior heat exchange takes up less space, offering greater design flexibility. The models are capable of lowering nitrogen oxide emissions (NOx) down to 250mg/Nm3 (0.5 g/hp-hr) offering compliance with global regulations without the need of selective catalytic reduction (SCR).
The models are also designed to achieve a 30 percent 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 full package of onboard HSK78G diagnostics minimizes unscheduled downtime while enabling customers to accurately predict maintenance needs and optimize maintenance costs.
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