Advanced Energy Efficiency, Lecture 2: Industry - Rocky Mountain ...

Case-study of a huge LNG plant
The tail: power generation
◊ Just the fuel-gas value (at a very low price) of saving
1 W e , present-valued over 20 years, is $1.34
◊ Small electricity savings would let us run 4 wellloaded
turbines with true n+2 redundancy; given
greater savings, just 3 turbines would suffice…
Dispatch to minimize part-load penalties
Load management; e.g., make LN 2 at night
◊ “Virtual trailshafting” could optimize each gas
turbine’s loading so it runs far more efficiently
◊ Sonic-pulse filter cleaning, not a compressed-air puff
◊ Water-spray “turbocharge”; indirect evaporative?
◊ Better: combined-cycle, η~0.55–0.60 (perhaps
~0.48 at ≥40˚C?, i.e. ~2×)
◊ Study windpower better; fuel cells; photovoltaics?