DIVISION OF ADMINISTRATIONUTILITIES & ENERGY SERVICES

David Payne, P.EInterim Associate Director October 16, 2012

AgendaAgenda

- Production System Overview

- Distributions Systems Overview

- Recently Completed Projects

- Combined Heat & Power

- Production & Distribution Optimization

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SUP2

CUP

SUP1SUP3

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Utility Production Upgrade Construction Locations

Boiler Installed Capacity (mlb/hr)1 2011 21012 2004 200

Total Capacity 410 mlb/hr

Generator Installed Capacity (MW)GTG1 2011 34STG2 2011 11STG4 1956 5

Total Capacity 50 MWElectrical Pow

er60

0 psi Steam

Power & Steam Generation Power & Steam Generation

Boiler Installed Capacity (mlb/hr)2 2011 3060

 psi 

Steam

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Location Chiller Number / Type CapacityCUP 7 Electric motor-driven centrifugals 16,500 tons

3 Steam turbine-driven centrifugals 10,000 tons

Total CUP Capacity 26,500 tons

SUP1 6 Electric motor-driven centrifugals 11,500 tonsSUP2 5 Electric motor-driven centrifugals 8,500 tonsSUP3 4 Electric motor-driven centrifugals 4,700 tons

Total SUP Capacity 24,700 tons

Total Campus CHW Production Capacity 51,200 tons

Chilled Water ProductionChilled Water Production

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Over 150 miles of piping on campus-direct buried and in tunnels Domestic cold water Domestic hot water Steam and condensate Chilled water Heating hot water Sanitary sewer Storm water Natural gas

Plumbing DistributionPlumbing Distribution

24” Water Transmission Line Repair

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Electrical DistributionElectrical Distribution

Underground Switch

147 building emergency generators

Over 4,500 street, parking lot & pedestrian walkway lights

Electricians and line technicians operate and maintain complex systems

Combined in-house & contract servicesF&B Road Lighting

34 major campus electrical feeders 300 miles of electrical cable 1,100 transformers (15 to 2500 KVA) 250 underground switches

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Recent Utility Projects Recent Utility Projects

Utility System Wide Critical Instruments Upgrade (2006-2009) Utilities Plant Control System Upgrade (2009) Plant Optimization Program (POP) Model (2012)CUP Chiller Plant Expansion (2009) Boiler 12 Burner Modification (2009) Cooling Tower 41/42/43 Refurbishment (2010) Combined Heat & Power (2011)

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Recent Utility Projects Recent Utility Projects

SUP1 Satellite Utility Plant 1 Chiller Upgrade (2011)SUP2 Satellite Utility Plant Expansion (2008) Chiller 32 Replacement (2010) SUP2 HHWB Capacity Upgrade(2011)SUP3 Southside Utility Plant Upgrade (2009) SUP3 HHWB Capacity Upgrade (2011)

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Size of campus served: 750 buildings, 22.5 million gross square feet (GSF) 19 million GSF conditioned space (cooled & heated)

Electrical power capacity and load: 50 megawatts on-site generation capacity (3 generators) 120 megawatts grid power capacity (138 kV transmission) 75 megawatts peak load

District cooling capacity and load: 52,000 tons cooling capacity (27 chillers) 36,000 tons peak cooling load

District heating capacity and load: 620 mmBtu/hour heating capacity (25 boilers) 250 mmBtu/hour peak heating load

CHP and District Energy at TAMUCHP and District Energy at TAMU

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Major Equipment Installed RatingGE LM2500 +G4 gas turbine 45,594 HP Brush generator (G1) 34 MWEIT heat recovery steam generator (600 psi) 210 mlb/hrDresser Rand back pressure steam turbine 600 psi input/20 psi output

14,571 HP

Hyundai Ideal generator (G2) 11 MWCleaver Brooks low pressure boiler (60 psi) 950 HPExtensive Electrical and Steam System Upgrades Over two miles of electrical duct bank Replace 12.5 kV electrical distribution cable and switches Upgrade three campus switching stations Major plant electrical system upgrades Plant steam system upgrades Plant control room renovation Monitoring and control system upgrades

Major Equipment & Systems InstalledMajor Equipment & Systems Installed

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TAMU CHP Flow DiagramTAMU CHP Flow Diagram

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Benefits Of CHPBenefits Of CHPTypical off-site fossil fuel power generation

Power generation efficiency – 35% Line loss (from source to site) – 5% Delivered on-site efficiency – 30%

Modern high efficiency CHP plant

75 to 80% efficient – GTG to HRSG to STG to HX’s Reliable on-site electrical and thermal energy source Ability to supply campus during power interruptions Higher efficiency reduces energy consumption & cost Significant reduction in emissions and carbon footprint

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CHP Analysis & JustificationCHP Analysis & Justification

$73.25 million capital investment $6 to $10 million projected annual cost avoidance(actual cost avoidance determined by cost of energy)Simple payback of less than 10 years$10 million DOE grant awarded to TAMUReduced energy consumption and emissionsImproved: reliability of service redundancy and emergency power source sustainability with reduced carbon footprint

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Energy Action Plan (EAP) 2015Initiative 8: Utility Production and Distribution OptimizationEnergy Action Plan (EAP) 2015Initiative 8: Utility Production and Distribution Optimization

The purpose of this initiative is to ensure that the production and distribution facilities are operated in the most safe, reliable, and efficient manner, with clear standards of service to campus.

Objective 8.1: Create performance measures for each facility and track performance. Continue to optimize production and distribution infrastructure. (2012)

Objective 8.2: Make highly effective and timely “Make or Buy” decisions for electricity on a daily basis and closely coordinate nominations. (Ongoing)

Objective 8.3: Fully leverage on-site Combined Heat and Power generation as an energy and cost- saving system as well as an educational and environmentally beneficial system. (Ongoing)

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Optimization Optimization Campus Standards, Design, and Operating Guidelines

CHW/HHW/DHW Reset Schedules

Real Time and Monthly Energy Purchasing

Electrical SCADA – Exterior Lighting Controls

Key Performance Indicators

Plant Optimization Performance (POP) Model

Campus Thermal Loop Water Reports

Campus Thermal Loop Performance Reports

FY13 Utility Production Upgrade

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ENERGY FORECAST ACCURACY ADMINISTRATION

Monthly Natural Gas Consumption Invoice Payment Efficiency

Monthly Electricity Production Vehicle Log Submission Timelines

Monthly Electricity Purchases Vehicle Log Accuracy

CUSTOMER SERVICE Utilities Hiring Efficiency

Service Availability Index – Electrical Hourly Staff Resource Loading

Service Availability Index – CHW FINANCIAL

Service Availability Index – HHW Total Utility Cost

Service Availability Index – DCW Purchased Utility Cost ($/GSF)

SAFETY / REGULATORY / TRAINING Operating Cost ($/GSF)

Regulatory Permit Compliance Utilities Labor Cost ($/FTE)

Safety Meeting Attendance Total Purchased Utility Costs ($/mmBtu)

Completion of Required Training ENERGY

Safe Work Time Index Total Energy Use (Billion Btu)

Lost Time Accidents Energy Use Index (mmBtu/GSF)

Key Performance Indicators (KPIs)Key Performance Indicators (KPIs)

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Plant Optimization ModelPlant Optimization Model

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Thermal Loop Water Balance ReportThermal Loop Water Balance Report

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Campus Thermal Loop Performance ReportCampus Thermal Loop Performance Report

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FY13 Utility Production UpgradeFY13 Utility Production Upgrade

CUP Steam Chiller 9 Replacement

SUP1 Chiller 103 Replacement

SUP1 Thermal Energy Storage

SUP2 Heat Pump Chiller

Chiller Plant Optimization

SummarySummary

Production System Overview

Distributions Systems Overview

Recently Completed Projects

Combined Heat & Power

Production & Distribution Optimization

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Central Utility Plant Tour

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