Unfired HRSG

Solar offers a Heat RecoverySteam Generator (HRSG)specifically engineered to beintegrated with any of our gasturbines, using the turbineexhaust to provide steam for yourplant, which can be integratedwith your overall steam system.

The primary function of theunfired HRSG is to make steamfrom the turbine exhaust heatwithout the aid of additional heatbeing added by a duct burner orauxiliary register burner. Thebasis of this unfired standard is150 psig dry and saturated steam,although a range of pressures andtemperatures can be accommo-dated. The design complies fullywith Solar's HRSG systemspecification ES 2206, latestrevision.

This standard productpackage has been configured toreceive exhaust gas from all ofSolar's gas turbines. Exhaustflow rate at ISO conditions wasused to determine steam capacityfor each Solar� gas turbinemodel.

Standard product packagesare available for all five Solarturbine families: Saturn�,Centaur�, Taurus�, Mars�, andTitan� gas turbines.

FEATURES

• Uses 99.5% of hot turbineexhaust gas for heat transfer

• Custom-designed furnacevolume, convection sectionheating surface area to meetapplication

• ASME Boiler & PressureVessel Code Section 1 design

• Economizer included forefficiency

• Access to tubes for inspection• Shop fabricated and assembled

within practical, shippablelimits

• Automatic three-elementcontroller (drum water level,feedwater flow and steam flow)

• Loose-shipped control panelfor remote installation

• Boiler trim provided, includingwater column, level gauge,level transmitter, safety reliefvalves, feedwater control valvewith manual block and bypassvalves, blowdown valves, andother standard valves

• Modulating diverter valvecomplete with loose-shippedpressure transmitter formounting on the main steamheader and a positioner for thediverter valve actuatorassembly

• Designed for nonhazardousarea classification, NEMA 4

• 12-month/18-month warranty

MAJOR EQUIPMENT

• Complete evaporator sectionincluding mud drum, steamdrum, and access platforms

• Economizer section• Three-way, single-blade

diverter valve complete withactuator positioner, and limitswitches for open and closedposition indication

• HRSG main exhaust stack withgas sample ports, platform andladder

• Expansion joint, bypass stackand support structure forbypass silencer – loose shipped

• Exhaust silencer interfaceengineering. Silencers areprovided normally by Solar aspart of the turbine package.

• Complete ductwork from theturbine exhaust expansion jointthrough the HRSG and up thestacks – loose shipped

Unfired HRSG

AVAILABLE OPTIONS

• Superheat tube bank section• De-superheating valve and

controls• Boiler trim options to meet the

operating plant needs• Complete soot blower system

or soot blower wallbox withbearings only

• Custom instrumentation• Additional expansion joints• Custom designs for gas flow

options to optimize pressuredrop, space restrictions andminimize cost

• Optional exhaust stackarrangements

• Chemical injection package• Boiler feedwater treatment

system• Additional water side

equipment• Dual units (S.I. metric and

English)• Auxiliary and/or supplemental

firing• Higher or lower pressures to

match your requirements• Start-up and commissioning

support• Lifting equipment, such as

spreader bar, slings andshackles

• Other options available uponrequest

• Other pressures andtemperatures

TECHNICAL SPECIFICATIONS

Standard configuration matrix forthe skid-mounted HRSG systemincludes:

• One turbine• One HRSG (unfired)• One diverter

DESIGN PARAMETERS

• Table values for the turbine aresea level at 59°F (15°C)ambient, San Diego natural gasfuel, 60% RH, 100% load, 3 in.water gauge inlet pressure loss,approximately 7 in. watergauge outlet pressure loss,nominal performance

• HRSG design is 150 psig dryand saturated steam, industrystandard pinch and approachvalues, 2% blowdown, 228°Feconomizer feedwater inlet, 1%casing loss

• Exhaust mass flow loss tobypass while in HRSG mode is1/2%

Typical Steam Capacities

Turbine Estimated SteamModel Capacity, lb/hrSaturn 20 8,630Centaur 40 18,430Centaur 50 24,780Taurus 60 29,300Taurus 70 31,100Mars 90 45,280Mars 100 50,690Titan 130 61,200

Solar Turbines IncorporatedP.O. Box 85376San Diego, CA 92186-5376 U.S.A.Caterpillar is a trademark of Caterpillar Inc.Solar, Saturn, Centaur, Taurus, Mars and Titan are trademarks of Solar Turbines Incorporated.Specifications subject to change without notice. Printed in U.S.A.Copyright � 2001 Solar Turbines Incorporated. All rights reserved.DSUHRSG/1001

FOR MORE INFORMATION

Telephone: (+1) 619-544-5352Telefax: (+1) 619-544-2633Internet: www.solarturbines.com