King Fahd University of Petroleum and Minerals CEM 512 Value Engineering Term Project Turbine Fuel Gas Heater Prepared by: Ahmed S. Al Zahrani ID# To: Dr. Sady Assaf August 8, 2005

OUTLINE INTRODUCTION JOB PLAN Information Phase Creative Phase Judicial Phase Development Phase Presentation &Implementation Phase Summary

INTRODUCTION In gas compression plant, the compressors are driven by a combustion gas turbine. For best turbine performance, the fuel gas temperature should be at certain temperature (120 – 140 deg F). Electric Coil heater that provide sufficient heat to fuel gas. The objective is to find better heating medium using Value Engineering Technique.

INFORMATION PHASE The information sources: – Equipment Manual – Plant Operating Manual – Material Control Group – Planners – Colleagues

Performance Criteria Objectives & Desired Criteria: – To give sufficient heat to fuel gas to be in the acceptable range. – To control and maintain that desired condition. Desired Features & Criteria: – Minimum construction cost. – Easy Control and Operation. – Safe Operation. – Easy Maintenance.

Cost Information Cost, $Item 30,000Electric Coil 5,000Wiring & Installation 5,000Instrumentation 40,000Total

Function Identification WHAT DOES IT NOW DO? WHAT MUST IT DO? NOUNVERB HeatSupply TemperatureControl NOUNVERB HeatSupply TemperatureControl PerformanceEnhance MaintenanceMinimize

Function Identification To Meet The Required Condition To Increase Temperature Have Heating Medium WHY? FUNCTION HOW?

Beside the Electric Heater: Steam Jacket. Exchange Heat Between Hot Lube Oil and FG. Exchange Heat Between Process Gas and FG. Eliminate the Heater. CREATIVE PHASE

JUDICIAL PHASE Assigned Weight Raw Score Goals, Criteria, Functions, Features 103A. Construction Cost 72B. Safety 31C. Easy Maintenance 31D. Easy Operation & Control DCB D-1A-1A-2A B-1 B C-1C HOW IMPORTANT 3. Major Preference 2. Medium Preference 1. Minor Preference

JUDICIAL PHASE TOTAL OperationMaintenanceSafetyCost IDEAS Proposed Idea: Electric Heater Steam Jacket Heat Exchange with Lube Oil Heat Exchange with Process Gas Eliminate Heater

JUDICIAL PHASE RankDISADVANTAGESADVANTAGESIDEA 2 High Cost, Difficult Maintenance Easy operationElectric Heater 1Difficult Operation Low Cost, Safe, Easy Maintenance Steam Jacket 3 Not Safe, Difficult Maintenance Low Cost, Easy Operation Heat Exchanging with Lube Oil 4 Not Safe, Difficult Maintenance Low Cost, Easy Operation Heat Exchanging with Process Gas 5 Not Reliable, Affect the turbine Performance No CostEliminate Heating

DEVELOPMENT PHASE INTIAL COSTS, $ ELECTRICAL HEATER40,000 STEAM JACKET7,500 SAVINGS32,500 LIFE CYCLE COSTS, $ ELECTRICAL HEATER7,000 STEAM JACKET3,000 SAVINGS4,000

Will be presented to the operation Manager. Decision will be taken by the Manager. Implementation will be done by Maintenance Division. Presentation & Implementation