GAS POWER Direct [February 4, 2013]

“Dash to Gas” Foreshadows Problems Ahead, Says Report

The shift toward greater reliance on natural gas for power generation is not just a story of greater efficiency and lower emissions. There are also lurking risks to reliability unless the natural gas and electricity industries can plan carefully for the future.

Duke Continues Switch from Coal with Three New Gas Plants 

Duke Energy’s once coal-heavy fleet is making a big transition to gas. Two new advanced combined cycle plants, and a third set to start up later this year, are a key part of the North Carolina–based firm’s drive to modernize its portfolio.

Feeding the Power Burn: Pipeline Capacity for Increasing Natural Gas Generation

>Finding ways to deliver the gas for the next generation of gas-fired power plants is perhaps the biggest challenge facing the power sector in the coming decade.

How Overcycling Induces Economizer Tube Failures

Why do some HRSG economizers and feedwater preheaters seem to suffer tube failures more frequently than others? If frequent failure is your problem, the cause may not necessarily be your heat exchanger’s design or how often you cycle your plant. Don’t forget to carefully check your feedwater controls—they may be cycling more than your HRSG.

Measuring Fugitive Methane Emissions

Understanding the true rate of methane leakage in natural gas production and consumption is a key milestone in managing this bridge fuel. But despite recent reports, there’s still a ways to go before we have a full picture of what’s going on.

More Duty for Gas Plants as Wind Turbine Output Declines?

>Gas-fired power has a growing and well-established niche in providing load-following for wind farms. But two recent reports suggest the demand on these plants may be greater than anticipated, as long-term output from wind may be falling short of original projections.

Why the U.S. Power Industry Shouldn’t Fear LNG Exports

The growing momentum toward exports of liquefied natural gas is creating a stir in Washington. A fair review of the issues suggests this is one dispute the power industry can afford to stay out of.