Gas turbine fuel expenditure can be reduced by as much as 4.6% when compressing LNG from natural gas, research by a team of scientists at the department of power and propulsion at Cranfield University shows. “The Technoeconomic and Environmental Risk Analysis (TERA) tool was created to analyze the operation of gas turbine engines used in LNG production and cut the power needed when compressing LNG from natural gas,” Matteo Maccapani, lead researcher on the project told Gas to Power Journal.
Carbon capture reduces the efficiency of the combined-cycle gas turbine power plant (CCGT) by 11%-point, a study by Sari Siitonen, Gasum Oy and Leena Pirhonen ÅF-Consult shows. The study analyses how the integration of pre-combustion carbon capture technology in the gas-fired combined heat and power (CHP) plant affects the efficiency, power-to-heat ratio, CO2 emissions and costs of the power plant.
A joint research study by the University of Canterbury, New Zealand and Università degli Studi di Ferrara, Italy promises to deliver new optimization techniques for power plant gas turbines, potentially improving efficiency by several percentage points. “Industrial implementation can be almost instant, once the reliability of the simulation models has been ascertained,” Hamid Asgari, a researcher on the project told Gas to Power Journal.
To fill the gap between its 40+MW aeroderivative LM6000s and 600+MW industrial gas turbines, GE has 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.
New filtration technology for gas turbines developed by equipment manufacturer, Vokes Air, offers the potential for more efficient gas turbine operation,extending turbine efficiency by around 0.2%. “Macrogen GT Duo filters are a low cost and simple method of lowering the pressure loss of a turbine air intake with no retrofit required,” Tom Winsper, a spokesman for Vokes Air told Gas to Power Journal.
Advanced manufacturing technologies are seen to have an unrivalled impact on the design of gas turbines and power plants. "In the future, we'll be able to achieve new levels of intricacy in parts using laser melting technology," forecast Willibald Fischer, Head of Product Management for Gas Turbines at Siemens.
Silicon Valley based start-up, Nirvana Energy Systems, has developed a new micro CHP solution that delivers 90% efficiency and can provide significant savings on residential power costs. The company’s first product, the 'Power Stick', produces between 1-4 kW of electrical power, and 15kW of thermal power.
For all but rarely used peaking plants, combined cycle designs deliver greater fuel efficiency and returns on initial capital investment. For new projects, there are two options to choose from – single- and multi-shaft. Though greater flexibility in plant design can be achieved with multi-shaft arrangements, single-shaft has lower capital costs, modelling from Lahmeyer International shows.
A prototype of a new small-scale electric generator offers the potential to capture untapped power from natural gas pipelines using a device known as a Tri-Axial Generator (TAG). Justin Michael Wyatt, co-founder of Magnetar, the company behind the design, told Gas to Power Journal that TAG is a new type of small hydroelectric generator which operates in existing pipelines and uses the fluid's kinetic energy to spin our open-centre impeller to produce electricity.