Thermoflow’ssuccess hasbeen derivedfrom a philoso-phy of technicalexcellence inall aspects of its products,services andpeople.

Total Program Seats (users)

Total Licenses of Thermoflow Plant Modeli

Maturity & Quality ofThermoflow Programs

n Over 150,000 man-hoursof advanced talentinvested, over 14 yearsof evolution.

nWritten by a group of stable, mature,mechanical engineers,no ‘programmers’ orexternal shops everused.

n Testing, validation & QC standards greatlyexceed those of simil-iar products on themarket.

n Largest & most maturesupplier - over 4,500programs sold, used anestimated 1 millionruns/yr, by 1,500 usersat 750 sites.

“Since 1989 I have found Thermoflow programs to continue to get better and better in meeting my needs and exceedingmy expectations in a variety of power plantengineering applications. Thermoflow programs have proven to be excellent tools for M&A, greenfield power projectdevelopment, performance test modeling,plant performance optimization, and plantupgrades and repowering. I would recom-mend Thermoflow programs to any devel-oper, engineer, or plant operator that needsto get his or her work done more efficientlyand with improved results.”

Ronald M. Weiner, Director - Engineering,Tractebel Power Inc., Houston, Texas

T H E R M O F L O W 1

Since 1987, Thermoflow has been a leading developer of thermal engineering soft-ware for the power and cogeneration industries. Its first product, GT PRO, has grown tobecome the world’s most popular program for designing gas turbine-based plants. Bythe end of 2001, about 1500 users, at 750 sites in over 50 countries were using GT PRO,making an estimated one million runs per year. Indeed, it may be reasonably assumedthat virtually any gas turbine combined-cycle plant built anywhere in the world in the1990’s has been modeled by GT PRO, whether by the owner, developer, financier, con-sultant, engineer, equipment manufacturer, constructor or operator.

By the end of 2001, Thermoflow had invested over 150,000 man-hours of technicalexcellence in expanding its line of software products, making it the most mature andcomprehensive in the industry.

A philosophy of excellence

Thermoflow’s success has beenderived from a philosophy of technicalexcellence in all aspects of its products,services and people. The excellence ofa manufactured product in the powerindustry is tangible. For example, itcan be demonstrated that a turbine hasmet its claimed power output, heat con-sumption and reliability. The accuracyof a software model, on the other hand,is much harder to discern. Whereasgross errors are obvious, subtle model-ing inaccuracies that produce no viola-tions of heat and mass balances gener-ally go unnoticed. This is especiallytrue in predictive off-design simulationof components and systems, whereunsatisfactory modeling techniques canremain undetected by the typical userfor years. It is all too easy to concen-trate on the visible facade of attractivegraphics and sales hype, rather than theunseen core of knowledge that only anexpert can perceive. Thermoflow’s phi-losophy, however, has always been torelentlessly pursue engineering excel-lence and integrity by concentrating onthe difficult but critical core of techni-cal details, despite the fact that manyusers and potential customers neverperceive this extra effort.

Thermoflow’s philosophy of excel-lence is firmly rooted in our people.All our engineers who do any program-ming on our models hold Ph.D. degreesin Mechanical Engineering, many fromMIT. The senior staff have all beencarefully selected and trained by thefounder. Advanced engineering talentis not just used to derive the modelsand direct program development, but

to actually write the programs, andthen only after an extensive period of training and observation atThermoflow. This has minimizederrors or oversights, all too common inlarge engineering models, and ensuredthat all modeling approximations arefully analyzed and understood beforebeing carefully incorporated into theprograms.

Success and stability, based on performance

Thermoflow has never sought norreceived funding from sponsoring agen-cies or outside investors. For fifteenyeras the company has been independ-ent, successful, and profitable becauseit has provided reliable, high qualitysoftware products which truly enhanceits customers’ productivity. The contin-uing growth and development ofThermoflow’s products is assured by astable, broad, growing base of satisfiedcustomers, as indicated in the chart onthe opposite page.

Repeat business indicates customer satisfaction. Most ofThermoflow’s larger customers haveordered more and more copies of itssoftware over the years, and most usersof one Thermoflow program haveordered its newer programs. Indeed,many have ordered new Thermoflowproducts sight unseen, without askingfor demos or trials, based on the confi-dence developed over years of custom.

Thermoflow was founded by Dr. MaherElmasri, who began writing its flagshipprograms, GT PRO and GT MASTER, in1987. Dr. Elmasri earned his Ph.D. fromMIT in 1978, and until 1987 served as aprofessor at MIT where he taught grad-uate and undergraduate courses inThermodynamics, Heat Transfer andPower and Propulsion. Dr. Elmasri con-tinues to provide technical leadershipfor Thermoflow’s models and programs,even though the primary responsibilityfor the company’s software has nowpassed into the hands of some of themost outstanding graduates of MIT, allcarefully selected and trained by thefounder.

With Thermoflow, the choice is yours...

THERE ARE TWO TYPES OF HEAT BALANCE PROGRAMS “Application-Specific” and “Fully-Flexible”. An Application-Specific pro-gram is a special-purpose tool, focusing exclusively on one family of plants. The program includes a vast, general model and theuser selects a subset of it via a guided, structured procedure. A Fully-Flexible program is a general-purpose tool, which allows itsuser to construct any model by connecting appropriate building blocks, in a flexible fashion. Each type of program has advan-tages and limitations, discussed below.

Many system modelling features and details arealready in place in a logical, ordered manner. All theuser needs to do is select which features to includeand the numerical values of its relevant input parame-ters. Since many complex plant features are alreadymodelled within the software, the user may invokethem by making a few guided selections rather thanneeding to synthesize their model from elements. Dueto the overall logical structure, hundreds of inputs canbe automatically created or user-defined, and can becross-checked and validated to ensure their consis-tency, preventing errors and crashes.

The pre-built models are, by their nature, finite. Theuser is limited to features and details that are withinthe pre-defined scope of the general model. Thus, inorder to have a satisfactory application-specific pro-gram, the pre-engineered model must be large andmature enough to ensure that all reasonable featuresand details are included. Thus, it takes many years todevelop a comprehensive family of programs of thistype, making them more expensive than a fully flexibleprogram that can cover the same scope.

APPLICATION-SPECIFIC PROGRAMS

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2 T H E R M O F L O W

FULLY-FLEXIBLE PROGRAM

This type of program normally provides component-logicbut leaves system-logic up to its user. The burdenplaced upon the user is thus, by its nature, far greaterthan for the application-specific type. The burdenplaced upon the program itself is also much greater;because it must be capable of gracefully handling sys-tem configurations and component applications that itsdevelopers have never intended, conceived of, or tested.Since the program cannot always “know” what its useris trying to do, it cannot cross-check all inputs, increas-ing the possibility of inconsistencies, problematic calcu-lations, and crashes, relative to a robust, well-organizedapplication-specific program.

The program is more general, and can, in principle,model any system that its user wishes to define.The program provides a library of component mod-els, which the user can connect graphically to con-struct any configuration. This allows greater vari-ety than can possibly be included in an application-specific program.

As the largest and most experienced developer of this type of software, Thermoflow supplies mature comprehensive, stand-alone products of both types. Whether you prefer specialized tools that help you to perfect each job, or whether you prefer to use a single multi-purpose tool for all jobs; Thermoflow has the perfect product for you. Best of all, Thermoflow’s programs are mutually compatible, allow-ing your investment in one program to complement and enhance the value of your investment in the others, if and when you need them.

T H E R M O F L O W 3

“We are pleased with the software, and theengineers in our department would notaccept to do their work without theThermoflow suite. The robustness and user-friendliness in GTPRO are excellent.”

Rik van der Ploeg, TechnologistShell Global Solutions International B.V., The Netherlands

In Application-Specific programs, the plant model is built from the outside in. The highest level selections are made first, such as overall configuration. The user then proceeds to lower level decisions, such asselecting the types of subsystems to be included. Finally, the lowest leveldecisions are made, such as the fine details within the various subsystems.The structured approach automatically considers all interactions between thesubsystems. It also allows many lower level inputs to be logically generatedby the program, depending upon the user’s higher level selections. At anylevel, however, the user is free to alter any or all of the program’s automaticselections. The built-in expertise will satisfy most users, greatly facilitatingtheir task of creating an efficient design in a highly productive fashion.

In Fully-Flexible programs, the plant model is built from the inside out. Theuser constructs the subsystems from their basic elements, then the overallscheme emerges from the interconnected subsystems. This method allowsgreat latitude, but less structured guidance. Even when one starts from a pre-viously built model, seemingly minor changes in one aspect of the systemmay require subtle, corresponding alterations in other parameters for an effi-cient design of the new system. Full flexibility places a much greater burdenof labor and logic upon the user.

OVERALL SYSTEM

OVERALL SYSTEM

OVERALL SYSTEM

SUBSYSTEM SUBSYSTEM SUBSYSTEM

SUBSYSTEM SUBSYSTEM SUBSYSTEM

DETAILS DETAILS DETAILS

DETAILS DETAILS DETAILS

SUBSYSTEMSUBSYSTEM SUBSYSTEM

DETAILS

DETAILS DETAILS

Thermoflow’s application-specific and fully-flexible programs are designedto be used on their own, independently of each other. However, theirmutual compatibility and connectivity allows the user who has both typesto get the best of both worlds. A plant model may be easily generated in theapplication-specific environment, and one or more of its subsystems may becustom built in the fully-flexible THERMOFLEX. The hybrid model thenoperates seamlessly, as a single system.

Furthermore, THERMOFLEX can read a plant model built in the applica-tion-specific GT PRO program, allowing the user to transition from fastautomated design to a fully-flexible environment.

...you can even get the best of both worlds

This line includes Thermoflow’s mostpopular programs, GT PRO & GTMASTER for gas turbine-based cycles,STEAM PRO & STEAM MASTERfor pure steam power plants, and RE-MASTER for repowering existingsteam plants by adding gas turbines. Italso includes the Plant DesignExpert (PDE) program for executive-level use of GT PRO.

GT PRO and STEAM PRO are designprograms, which create cycle heat bal-ance as well as the physical design ofequipment needed to implement it. GTMASTER and STEAM MASTER aresimulation programs that predict per-formance of the plant as a function ofits fixed equipment, control set-points,loads, and ambient conditions. RE-MASTER designs the new equipmentneeded to convert a given pure steampower plant to combined cycle, thenproceeds to simulate performance ofthe repowered plant at off-design.

Thermoflow’s application-specific pro-grams provide an astonishing wealth ofmodeling detail, yet are deceptivelysimple to use. Many new users, with-out training or time spent readinginstructions manuals, can produce pro-fessional plant designs within a fewhours of installing a program.Experienced users normally design anew plant in a few minutes. This seem-ingly contradictory combination ofincredible power and detail with fast,friendly ease of use is the result ofthoughtful software design and tirelessimprovements - the fruit of over

100,000 man-hours invested in theapplication-specific programs. Allinput variables have reasonabledefaults, or may be generated by auto-matic procedures within the program tosuit the user’s application. Non-criticalinputs are tucked away into secondarytabs, readily accessible to those whowant them, but virtually unnoticed bythe casual user. Experienced users whochoose to delve into details never ceaseto be amazed by their depth.

Highly flexible tools, dedicated to each application

Thermoflow’s application-specific pro-grams are not “of fixed configuration,” a misleading label promulgated by com-petitors. GT PRO & GT MASTER arehighly flexible and can produce endlesspermutations and combinations ofarrangements, that cover virtually anypractical combined cycle configuration.Likewise, STEAM PRO and STEAMMASTER cover most practical conven-tional steam plant designs, and RE-MASTER covers any viable repoweringarrangement. However, by their design,GT PRO and GT MASTER cannotmodel a conventional steam powerplant, and STEAM PRO & STEAMMASTER cannot model a combinedcycle.

Each of Thermoflow’s four mainApplication-Specific programs hasabout 2000 inputs, providing extensiveflexibility and covering myriad details. This does not make them hard to use,since the structure and automated logic

guides the user through the process inan orderly and organized fashion. Atypical GT PRO run may involvechanging only 30 of the inputs fromtheir defaults or their automatically-generated values. Thus the flexibilityand detail are there when needed, butdo not intrude upon the user who justwants a quick heat balance design. Atypical plant design can thus be createdin under half an hour, but may takedays with some fully flexible programs.

Engineering details, automatically andconveniently generated for each heatbalance design

Users of Thermoflow’s application-spe-cific programs who have licensed thePEACE (Plant Engineering AndConstruction Estimator) module getinstant equipment designs and cost andlabor estimates along with each heatbalance they produce. The assump-tions used to create the physical designand dimensions of components, such asboilers and condensers, may be definedby the user, or left to the program’s ownautomated logic. This provides theflexibility for knowledgeable users tomimic actual designs created by specificvendors, while providing the conven-ience of automated equipment designlogic for the casual user. PEACE alsoincludes detailed pipe sizing proceduresfor all main steam and water pipes, aswell as convenient pump sizing and specification routines.The cost estimates generated by PEACEare “bottom-up,” adding the costs of

APPLICATION-SPECIFIC HEAT BALANCE ENGINEERING SOFTWARE

4 T H E R M O F L O W

T H E R M O F L O W 5

“During my time as Manager of FieldApplications Engineering at GeneralElectric Power Systems, my team and Iused GT PRO and GTMASTER to developrapid turnaround solutions. The ability toprovide accurate heat balances in a shorttime was key in the selection of GEPSequipment for many projects.”

Marv Weiss, PECreative Power Solutions, LLC, Scotia, NY

hundreds, or even thousands, of com-ponents. The cost and field-laborhours of each component are derivedfrom rational models that take intoaccount the component’s features,materials, rating, size and weight.These models have been extensivelycalibrated by actual equipment data.This approach is in contrast to “top-down” cost estimating procedures,which start with the cost of the systemand break-it down according to rules ofthumb. Whereas both methods mayyield the same final result for “typical”plants, the “top-down” method, by itsnature, cannot be sensitive to detaildesign changes, so cannot be used foroptimizing the tradeoffs between costand performance. The “bottom-up”method used in PEACE can account forchanges in design details, even of thesecondary components, such as pipes.By finding both the cost and perform-ance impact of each design change, theuser may quickly optimize designdetails, such as pipe sizes, pump selec-tions or HRSG specifications.

Why separate programs for combinedcycles and conventional steam plants?

We are sometimes asked why we haveseparate programs for combined cyclesand for conventional steam plants.After all, both types of plant can bemodelled by a single fully-flexible pro-gram, such as THERMOFLEX. The answer is that application-specificprograms provide both plant models aswell as component models; whereas afully-flexible program provides compo-nen models only, leaving the plant

model to be defined by the user. GTPRO and STEAM PRO incorporate alogical design philosophy, respectively,for combined cycles, and for conven-tional steam cycle plants. GT MASTERand STEAM MASTER incorporatedetailed equipment modelling calcula-tions and control logic for each of theseplant types.

When you are designing a plant (thedesign phase in our “PRO” programs)there are certain inputs that a reason-able person can assume, which differbetween a combined cycle and a con-ventional steam plant. By knowingwhat type of plant you are designing,we can help you to create an efficientplant design, by applying well provenlogic to automatically derive secondaryinputs to suit your primary inputs andselections. We can help you by cross-checking and validating your inputs.Thus GT PRO and STEAM PRO aredesigned to supply a logical frameworkthat guides the user, in an organizedway, through the plant design process.An equivalent methodology is very dif-ficult to provide in a fully-flexible pro-gram, which can be used to design bothcombined cycles and conventionalsteam plants. The fully-flexible pro-grams, by their nature, end up leavingthe user to his or her own devices.

Why different programs for design and for off-design?

When simulating a fixed plant, thetypes of inputs to describe its operation are its physical hardware and its control actions triggered by various parameters

reaching their set-points. Those typesof inputs and the philosophy of organ-izing and checking them are very differ-ent from the inputs used for creating adesign. This is why our GT MASTERand STEAM MASTER simulation pro-grams are separate from our GT PROand STEAM PRO design programs. Afully-flexible program that handles bothdesign and off-design has a more com-plex structure and a larger set of inputs.

To appreciate the need to differentiatebetween design and off-design andbetween a combined cycle and a steamplant, it may be useful to note that eachof GT PRO, GT MASTER, STEAM PRO and STEAM MASTER have about 2000 user-adjustable inputs. Had oneApplication-Specific program coveredboth plant types and both design andoff-design, at an equal level of detailand flexibility, it would have had about8000 inputs, posing numerous chal-lenges, both for its developer and for its users!

Find out more ...

Install the Thermoflow CD, then clickon GT PRO or STEAM PRO. The demoversions contain a few imput restric-tions, but allow you to change hun-dreds of input variables and compute,to observe the effect of your inputs onthe results. The PowerPoint tutorials onthe CD can help you to become familiarwith the programs.

6 T H E R M O F L O W

OVERVIEW OF THERMOFENGINEERING SOFT

GT PRO: Automates the process of designing a combined cycle or gas turbine cogeneration plant, it is particularly effective for creand design parameters. The user inputs design criteria and assumptions and the program computes heat and mass balance, system of detail in GT PRO has been continuously growing since 1988, to the point that the 2002 version has over 2000 user-adjustable inputs.design procedures that help the user identify the best design with minimal time and effort, while allowing the flexibility to make any chcally requiring only a few minutes to create a new plant design. It normally computes a heat balance and simultaneously designs theconjunction with the optional PEACE module, the programs provide extensive engineering and cost estimation details.

GT MASTER: Simulates performance of a given plant at different operating conditions, such as different ambients and loads. The main control set-points can all be initialized for a plant by simply reading its GT PRO design file. Once a GT MASTER plant model has facilitates use of correction curves generated by GT MASTER, and helps planners to forecast their fuel consumption and electricity pengineering and cost estimation functions obtained in conjunction with the PEACE module facilitate optimization of design details, suc

PDE (Plant Design Expert): An “Executive Level” version of GT PRO to help generate a plant conceptual design and heat rate ates a GT PRO input file based on the user’s requirements for the proposed plant. It then runs GT PRO in the background and displaysPRO’s flexibility and replaces it by a high degree of automated, expert logic, deciding what type of cycle should be used, its configuraeters. PDE provides its user with approximately fifty adjustable inputs to state his/her requirements. The rest of GT PRO’s 1500 inputs

STEAM PRO: Automates the process of designing a conventional utility steam power plant.

STEAM MASTER: Simulates performance of a conventional utility steam power plant at different operating conditions.

STEAM PRO and STEAM MASTER are philosophically and functionally equivalent to GT PRO and GT MASTER, but for conventional utcombined cycles.

RE-MASTER: Designs and simulates repowering of conventional steam plants with gas turbines. The program starts with a STEAMrapid, accurate evaluation of the various repowering options. RE-MASTER does both the design and off-design analysis. Its design pcertain items of equipment already exist, with known characteristics, and other new items have to be designed to supplement them. details of all viable modes of repowering, including “hot windbox”, “boiler replacement”, “feedwater heating”, and “parallel repower

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ION PEACE (Plant Engineering And Construction Estimator) is a module that is licensed separately, but works seamlessl

As of January 2002, its functionality within THERMOFLEX was limited to about twenty components, covering heat recovery boilers, coand expected to be complete in 2002.

When used from within GT PRO or GT MASTER, PEACE provides additional inputs to automate the preliminary engineering and cost eof-plant are derived from the detailed hardware specifications, so that any design change is immediately reflected in corresponding condensers, or cooling towers; as well as plant subsystems, such as piping, pumps, and gas turbine inlet chillers.

OFLOW’S HEAT BALANCE FTWARE PRODUCTS

T H E R M O F L O W 7

reating new designs and finding their optimal configurationm performance, and component sizing. The scope and levelts. Most key inputs are automatically created by intelligent changes or adjustments. GT PRO is truly easy to use, typi-he required equipment in under three seconds. When run in

he roughly 1700 inputs which define plant hardware andas been fine-tuned, it can be run from within MS Excel. Thisy production and to model their cash-flows. The extensivesuch as pipe sizing or pump selection.

te estimate “on the fly”. PDE is an intelligent shell that cre-ays abbreviated output results. PDE takes away much of GTration details and the numerical values of its design param-

uts are generated automatically.

utility steam power plant cycles, rather than gas turbine

AM MASTER model of the existing power plant and allowsn phase accurately reflects the reality of repowering, where

. RE-MASTER handles all thermodynamic and heat transferering”.

THERMOFLEX: A modular program with a graphical interfacethat allows one to assemble a model from icons representing overone hundred different components. The program covers bothdesign and off-design simulation, and models all types of powerplants, including combined cycles, conventional steam cycles, andrepowering. It can also model general thermal power systems andnetworks. It answers the need of some customers for a single,“jack-of-all-trades” program, that is much less expensive than ourcomplete suite of Application-Specific programs.

THERMOFLEX was first released in 1995 and has undergone relent-less improvement ever since. A 1999 independent study rankedTHERMOFLEX ahead of all other fully-flexible programs in the mar-ket, including several that are widely-used and considered fullymature. As of 2002, over 300 copies of THERMOFLEX had beenlicensed, many to GT PRO/GT MASTER customers for use wherefull flexibility is needed; such as for modelling gasification plants orcomplex district heating arrangements.

Starting with Version 5.0 (August, 2001), many THERMOFLEX com-ponents have been provided with the detailed physical design andsimulation models used for many years in GT PRO and GT MASTER,as well as with the engineering and cost estimation functionality ofPEACE.

In addition to being a comprehensive, stand-alone tool, THER-MOFLEX may be used in conjunction with Thermoflow’s application-specific programs to provide powerful synergies.

F U L L Y - F L E X I B L E P R O G R A M

ssly within Thermoflow’s main heat balance programs. Its functionality within GT PRO & GT MASTER is comprehensive, proven and mature. cooling systems, piping, pumps, and and balance-of-plant items. Its functionality within STEAM PRO & STEAM MASTER is in development,

st estimation of each plant, as designed in GT PRO, or as modified in GT MASTER. The logical cost functions for all equipment and balance-ng changes in both performance and cost. This greatly facilitates the techno-economic optimization of major equipment, such as boilers,

“We have been using GT PRO and GT MAS-TER for more than ten years. Thermoflowhave gained our confidence with the accu-racy of results, great time saving features.The PEACE estimations are surprisinglyclose to the vendor quotations, and PEACEis a very effective time saver.”

Levent Ersoy, Ph. D., P. Eng.SNC Lavalin Inc., Montreal, Canada

8 T H E R M O F L O W

THERMOFLEX is a fully flexible pro-gram that allows you to model a broadrange of thermal systems, with emphasison power generation and cogeneration.It can be used to model gas turbinecombined cycles, steam power plants, orrepowering, in addition to a virtuallyendless variety of power plant systems,standard or novel. It provides designand off-design modes into a single pro-gram, so you can use one program forall your calclations. In combinationwith PEACE, it also provides equipmentsizing, conceptual engineering details,and cost estimation. THERMOFLEX isan economical alternative for users whohave a wide range of application inter-ests, but insufficient activity in any oneplant type to justify the cost of theapplication-specific programs.

To build a model in THERMOFLEX,you simply click on icons representingthe components you wish to use, placethem wherever you want on yourscreen, and connect them to other com-ponents in your system. User friendlywarnings will inform you of inappropri-ate or unresolved connections. Onceyour system layout is complete, you can progress through simple, intuitivemenus to specify performance parame-ters for each component.

User-friendly

Thermoflow’s experience, developedover fifteen years of serving hundreds ofsoftware users, has been harnessed tomake THERMOFLEX as user-friendly as

a fully-flexible program can be. Unlikemany other fully-flexible programs,THERMOFLEX will, in the vast majorityof cases, solve your initial mass balancefor a totally new model without askingyou to pre-define an initial mass balanceor declare flow rates or componentswhich dictate them. In addition, THER-MOFLEX will check to detect inconsis-tencies in your inputs before launchingthe computation, and has an extensivesystem to trap and identify errors orincompatibilities detected during com-putation. A vast library, with hundredsof diagnostic messages, will guide youto productively resolve any difficulties.

Modular structure

THERMOFLEX is completely modular,with each component represented by an

icon and modeled by its own self-con-tained subroutine. This approach allowsus to continuously expand and improvethe program by adding new componentsor expanding the scope of existing com-ponent models while maintaining com-patibility with previous versions.

Extensive component library

The THERMOFLEX library containsmodels for over 100 components.These have a venerable pedigree, sincemost component models originate fromThermoflow’s proven, world-class, appli-cation-specific programs. For example,the full gas turbine library and calcula-tion method used in GT PRO and GTMASTER is included in THERMOFLEXLikewise, the proven, robust proceduresused to model components such as boil-

FULLY-FLEXIBLE HEAT BALANCE ENGINEERING SOFTWARE

Dr. Elmasri discussing development of the software suite with Vice Presidents Dr. Gwo-Tung Chen (right) andDr. Patrick Griffin. Chen joined Thermoflow in 1991 after earning his Ph.D. from MIT, and is primarily in chargeof GT PRO. Griffin, who joined Thermoflow in 1992, is Elmasri's "grandstudent"; the professor supervising histhesis at MIT was Professor Elmasri's doctoral student.

T H E R M O F L O W 9

ers, condensers, cooling towers orfeedwater heaters are adapted from GTPRO/GT MASTER or STEAMPRO/STEAM MASTER. In addition,THERMOFLEX includes additionalcomponents that allow modellingplants beyond the scope of GTPRO/GT MASTER or STEAMPRO/STEAM MASTER, such as desali-nation plants and gasification systems.THERMOFLEX also includes an exten-sive library of reciprocating engines,with over 350 engine models, bothdiesel and gas-fired.

A wealth of engineering details

THERMOFLEX users who havelicensed the PEACE (PlantEngineering And ConstructionEstimator) module get instant equip-ment designs, specifications and costestimates for many components, suchas piping, pumps, fin-fan coolers,chillers, cooling towers, etc.

Compatibility with Thermoflow’s application-specific programs

THERMOFLEX, like any other fullyflexible program, requires far moretime and expertise to design and simu-late realistic cycles than our popularapplication-specific programs. Forinstance, a complex combined cycle that you can create with GT PRO in afew minutes could require severalhours to build from scratch in THER-MOFLEX or other fully flexible envi-ronments. Software customers anddevelopers have sought the elusive,

perfect compromise between total flex-ibility and quick set-up for years.Thermoflow is the first developer ofthermal power system software to haveresolved this conflict. You can simplyuse GT PRO to rapidly design a largecomplex combined cycle, then,through a Thermoflow softwarebridge, transfer the design into THER-MOFLEX, where you can make modi-fications or additions or even combineit with other THERMOFLEX files.You can even link THERMOFLEXmodels to one or more GT PRO/GTMASTER models. For instance youcan build a combined cycle in GTPRO/GT MASTER and link it to aTHERMOFLEX network. Steam,water, air, flue gases, or fuel entering(or leaving) the GT PRO/GT MASTER models can come from (or go to) theTHERMOFLEX network. Automaticmatching of flow rates and pressures at

the boundaries between such hybrid models ensures that the entire hybridmodel functions as a single, integratedsystem. This procedure greatly facili-tates modelling complex systems, such as IGCC (Integrated GasificationCombined Cycles), District Heating, or Desalination.

Find out more ...

To try THERMOFLEX, install theThermoflow CD, then click on theTHERMOFLEX icon. This will start a limited version of THERMOFLEX,with reduced but highly-useful func-tionality. Please enjoy it with ourcompliments! Your CD contains a\Tutorials directory which includes afew THERMOFLEX tutorials in MSPowerpoint to help introduce the software to new users.

“I evaluated five different heat balance pro-grams before selecting THERMOFLEX to meetmy needs as a consulting engineer in thesteam turbine performance industry. I havenow used it for over two years, and amextremely pleased with the program andThermoflow’s customer support.”

Deborah H. Cioffi, P.E., Consulting Engineer,Schenectady, NY

The 365-megawatt Selkirk Cogeneration Plant relies on Thermoflow software to monitor plant performance.

1 0 T H E R M O F L O W

QT PRO2 (Quick Thermal Properties and Processes)

Thermoflow’s QT PRO2 program (QuickThermal Properties and Processes) pro-vides a convenient, user-friendly toolfor anyone who frequently performssimple, fundamental calculationsinvolving heat transfer or thermody-namics. With a massive library of sub-stance properties linked to commonlyused thermodynamics and heat transferformulas, it is an invaluable tool forengineers or students in the mechani-cal, chemical, or process industries.QT PRO2 is included in Thermoflow’sEngineer’s System software bundle.

RECIPRO

An Excel add-in that enables plantengineers and consultants to rapidlyevaluate and and optimize cogenerationsystem selection for hotels, hospitals,institutional buildings and small indus-trial applications. It is simple and bot-tom-line oriented, starting from themonthly utility bills. It can generatedetailed predictions of energy savingsfor hundreds of cogeneration systemoptions, using an extensive database ofreciprocating engines, ranging from 70kW to 6 MW. The program considersdaily load profile variations for electri-cal, heating, and air-conditioning loadsand can analyze the effect of substitut-

ing absorption chillers for electricallydriven units to make better use ofcogenerated heat. It evaluates differentoperating scenarios, identifying the sav-ings for each. It also allows differenton-peak and off-peak pricing, and dif-ferent electricity prices for purchaseand sale.

GTeye

A gas turbine performance monitoringprogram for on-line or off-line use.Inexpensive and easy to configure andinstall, GTeye is satisfies the need for asimple, reliable performance monitorfor bottom-line oriented operators.

OTHER PRODUCTS AND SERVICES

“No button pushing andpre-recorded menus to fight- you get real people withreal answers, who remem-ber your company and yourneeds call to call.”

Glenn A. Sampson, P.E. Advanced Energy Solutions,Inc., Middlefield, CT

T H E R M O F L O W 11

Software Training

Thermoflow has successfully striven to impart user-friendliness and logicalstructure to our programs. While mostcustomers use the programs confidentlyand successfully on their own, there arealso customers who seek, and benefitfrom, training in the use of the pro-grams. Even experienced users havebeen pleased to discover in training sessions that powerful features andintricate details they had wished for,but not expected, are already at their fingertips.

Training is provided at scheduled ses-sions, advertised in advance to regis-tered program users, and attended by people from multiple organizations.We also hold training sessions in vari-ous parts of the world at our customers’sites, by special arrangement.

Consulting

Thermoflow is pleased to serveits clients in a consulting capacity,

drawing on its wealth of software toolsand unique, wide-ranging experience with modeling power plant equipmentand systems. Whether you need tointerpret test results, produce correc-tion curves for plant performance,assess equipment conformance withwarranties, commission a repoweringstudy or seek to improve heat rate,Thermoflow is sure to provide you with high-quality, reliable answers atcompetitive cost.

Thermoflow’s “Design of Gas Turbine CombinedCycle” seminar held in Frankfurt, December 1998,and co-sponsored by Lahmeyer International. Backrow, from left is Petra Kupsch of Lahmeyer, fol-lowed by Dick Foster-Pegg, who has participated inteaching the seminar for many years, and MaherElmasri. Since 1990, the seminar has been heldabout 40 times worldwide and attended by about1500 engineers.

“I want to congratulate you on your seminar.In the past 25 years, my company has sent meon many seminars which were a completewaste of my time and my company’s money.Your seminar was the only one I have everattended that was worth every minute andevery dollar. I am not a novice on this subjectbut I learned something new every hour!”

John Morgan, PPG Industries,Lake Charles, LA, USA

Dr. Gangyi Jia discussing STEAM PRO and STEAMMASTER with Dr. Norman Decker. Since joiningThermoflow in 1991, Jia has made many contribu-tions to the software product line. Decker is famil-iar to hundreds of Thermoflow customers whohave attended the software training classes hehas taught over the years.

Professional Development Seminar

Since 1990, Thermoflow has sponsoreda three-day, in-depth, professionaldevelopment seminar on the design ofcombined-cycle and cogeneration sys-tems. The course focuses on under-standing the application of fundamen-tal principles to practical, efficientdesign and selection of equipment andcycles. It is mainly taught by Dr.Maher Elmasri, Thermoflow’s founder.

12 T H E R M O F L O W

“We use PEACE to determine the capital cost impact of varying design options when configuring a plant, and havegenerally found the PEACE overall plant equipment and construction costs to be within 10% of the actual costs. Wehave used GT MASTER and STEAM MASTER to investigate literally dozens and dozens of potential projects. They areexcellent tools to determine the best approach to take, and I can, within one day, determine the optimum plant cycle.”

Terry Jordan, P.E., Cogentrix Energy, Inc., Charlotte, NC

“We have used GT PRO and GT MASTER since 1988 for feasibility studies, design planning of new power stations orrehabilitation of existing plants. Since that time, the programs became more and more user friendly and a lot of use-ful engineering tools have been added. During the last years, we have used also STEAM PRO, STEAM MASTER,THERMOFLEX and PEACE. For an engineering company, it is very important to have such programs which provide usefficient and precise outcome and make it possible to consider all kinds of possibilities in a short time. We cannotimagine our work without these programs.”

Petra Kupsch, Lahmeyer International, Germany

“As one of the users of GT PRO/GT MASTER from their beginnings, I feel that these programs are really recommend-able if you are looking for cycle simulation software of gas turbine-based power plants. ..... At the contract negotia-tion stage of the project, we found that the owner’s consulting engineering company was also using GT PRO and GTMASTER, and they specified that the GT PRO and GT MASTER simulation electronic files shall be submitted as one ofthe contractual documents.”

Ho Y. Choi, Daelim Industrical Co., Ltd., Seoul, Korea

“Thermoflow’s software allows us to quickly evaluate a number of potential avenues and our clients are impressedwith our rapid response. We could not do it without the products of Thermoflow.”

Sean Nolan, ANNA, Inc., Lanham, MD

“GT PRO has proven to be an extraordinarily valuable tool for our company.”

Andy Sutherland, Cummins & Barnard, Inc, Ann Arbor, MI