American multinational, General Motors (GM), has announced plans to invest $24 million in two power plants fuelled by landfill gas. The plants will be based at the company's Fort Wayne, Ind., and Orion, Mich., assembly plants and will increase total onsite gas power generation to 40% and 54% ot total consumption respectively.
With gas turbines increasingly used from the smallest to the largest scales of power generation systems, the technical scope of machinery has grown dramatically in recent years. Modern Gas Turbine Systems, published by Woodhead Publishing, gives a comprehensive introduction and overview to the subject, outlining the mechanical principles and underlying physics of gas power generation, and describing a range of operational concerns relevant to plant operators and engineers.
Rare but catastrophic failures in gas turbines may soon be preventable thanks to research conducted at the Chinese Academy of Science. "Our research aims to widen the operating range of for gas turbine engines, preventing lean blow-out and reducing the pollution emission by optimization of fuel atomization," Liu Cunxi, researcher at the Academy's laboratory of light duty gas turbines told Gas to Power Journal.
Steam turbines operating in combined cycle power plants will soon be able to start-up and cool-down more flexibly following research by engine manufacturer Alstom. "We expect to see turbines starting more frequently and more quickly with less life consumption due to more accurate modelling of the fatigue cycle during turbine cool down," Gabriel Marinescu, a lead researcher at Alstom told Gas to Power Journal.
The increase in demand for flexible gas power is creating increased stresses on Heat Recovery Steam Generators (HSRG) attached to combined cycle gas turbines (CCGT) and driving the need for new solutions to prevent damage, attendees at the HRSG user group conference heard today. “The current and future outlook is pushing CCGT into unpredictable, flexible operation and we need to start thinking about solutions to make that operation cost effective,” Stuart Strachan, Engineering Manager at Alstom said, speaking to Gas to Power Journal.
A research project under way at the University of Kentucky (UKY) is currently developing a solution to mitigate CO2 from gas- and coal-fired power plants using a novel algae-based process. "We are aiming to reduce the cost of the process to $300/tonne at which point the resell value of the algae will allow for break-even and carbon capture can operate at zero cost," Mark Crocker, lead researcher on the project told Gas to Power Journal.
Instead of flared waste gas, US shale oil producers increasingly use the by-product as a source for power generation, saving costs for onsite applications. US industrial burner firm Periflame offers a range of generation products to help improve the operational efficiency of flare stacks, said director of engineering, Yuri Kryzhanovskyi.
Fuel cell technology powered by natural gas could cut data center costs by as much as 20%, analysts at Microsoft have suggested. In a new paper titled, "No More Electrical Infrastructure: Towards Fuel Cell Powered Data Centers" researchers estimated that using localised power generation, instead of buying electricity from the grid, could significantly reduce the estimated 38GW of global energy used by data centers each year.
Mitsubishi Heavy Industries, (MHI) and Tokyo Gas have launched GS16R2, a grid-connected combined heat and power genset with 1.5MW output at 1500rpm. The new product is aims to render distributed generation less complex and costly for medium-size factories, hospitals or urban redevelopment areas in Japan.
Ammonia, already in use to fuel vehicles, could be used as a source of fuel for gas-fired power especially for off-grid applications, said US-based Space Propulsion Group (SPG). The research group is developing a system that transforms ammonia into hydrogen-based fuel to power combined-cycle plants.
To fill the gap between its 40+ MW aeroderivative LM6000s and 600+ MW industrial gas turbines, GE developed the LMS100. It takes the low pressure compressor designed for the Frame 6FA GT, runs the air through an intercooler, and then into a supercore which is based on the LM6000.
"In combination, this provides 100 MW of power and ten minute start times," said Phil Tinne, GE's LMS100 Product Manager.