Industrial Gas Turbines - Energy Solutions Center

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insideon the coverThis Taurus 60 unit by Solar Turbinesequipped with a heat recovery steamgenerator (HRSG) serves an EastCoast pharmaceutical manufacturingplant. The unit is rated at 5.5 MW.Photo courtesy Solar Turbines.Gas Technology is a trademark of EnergySolutions Center Inc. and is publishedin cooperation with Reed BusinessInformation.Gas Technology is an educationalsupplement from:Energy Solutions Center Inc.400 N. Capitol St., N.W.Washington, DC 20001 (202) 824-7150 www.energysolutionscenter.orgDavid Weiss, Executive DirectorJake DelwicheContributing EditorComments may be directed to:Gas Technology EditorPlant Engineering Magazine2000 Clearwater Dr.Oak Brook, IL 60523 (630) 288-8789Printed in the USAenergy solutions center websiteswww.aircompressor.orgwww.cleanboiler.orgwww.energysolutionscenter.orgwww.naturalgaseffi ciency.orgwww.gasairconditioning.orgwww.poweronsite.orgwww.foodtechinfo.comA3Use All of the EnergyIndustrial Gas Turbines allow industry and institutions tocapture both efficient electric generation and a rich sourceof byproduct heat for steam or hot water. The solution is acombined heat and power (CHP) design.A6 Water Heating MiracleDirect contact water heaters have effi cienciesapproaching 100% and provide large quantities ofhot water on demand. Find out why this solution isgrowing in popularity.A9 Squeezing More Efficiency out of HeatTreating BurnersToo often we forget about burner effi ciency in heattreat ovens and furnaces. Learn how a little attentioncould produce a gold mine of energy savings.A11 Putting More Tools in Your PlantEfficiency ToolboxCheck out opportunities for additional energysavings with new tools and even possible dollarassistance from utilities, associations and thegovernment.
INDUSTRIAL-SCALE TURBINESGaining RespectHeat Recovery Makes the DifferenceWITH FLUCTUATING ENERGY PRICES and ever-increasingemphasis on operating economies, mid-sized industrial gas turbinesfeel right at home. Several configurations help industrialenergy users take more complete advantage of the energy theypurchase, and offer added energy supply security. The keys arenewer turbine designs and cost-effective heat recovery.Defining the Sweet Spot for IndustryIndustrial machines are bracketed between the microturbines thatgenerate from 30 to several hundred kW for residential and commercialmarkets, and utility-scale machines that put out 25 to 300MW. This industrial size category – 1.0 to 20 MW – is ideal forindustrial and institutional users that want a reliable source ofself-generation and are able to use the substantial byproduct heatin a variety of applications.Larger simple-cycle gas turbines are commonly used by centralstationelectric utilities for peaking generation. Annual operatinghours are generally limited and usually no attempt is made tosalvage waste heat. For longer run-hour applications, combinedcycledesigns direct the gas turbine exhaust at temperatures upto 1000° F to a heat-recovery steam generator (HRSG) and thesteam is then used to operate a steam turbine-generator.Unit Efficiencies Are Better Than EverBut it is the industrial and institutional users that are uniquelypositioned to take the most complete advantage of the dual energyoutputs. Today’s mid-sized gas turbines have heat rates substantiallybetter than those of a few decades ago, meaning the outputof electric energy and the generation of byproduct steam is muchmore balanced. The HRSG produces steam that can be used for avariety of applications. These include smaller scale versions of theutility combined-cycle generation scheme as outlined above or, orfor water heating, food processing, space heating, absorption cooling,and many other process uses.Aeroderivative and Industrial Designs MergingIn the past, much attention was given to the distinctions betweenthe aeroderivative family of gas turbines and the industrial or“frame-built” family of machines. Aeroderivative turbines are descendantsof turbine designs originally used for aircraft engines.This 5.5 MW Taurus 60 SoLoNOx unit by Solar Turbines replaced a coal-fi redgenerating unit at a Midwestern university campus. Photo courtesy Solar Turbines.WWW.ENERGYSOLUTIONSCENTER.ORG gastechnology / SPRING 09 A3
Page 5 and 6: natural gas-fired simple-cycle gas
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Industrial Gas Turbines - Energy Solutions Center

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