session: campus utility distribution system strategies

Rhode Island Convention Center • Providence, Rhode Island

Distribution System Master Planning:How to Build a Successful Plan

Session: Campus Utility Distribution System Strategies

Kevin Fox, P.E., CEMJacobs

August 9, 2016

Energy Exchange: Federal Sustainability for the Next Decade

COMPREHENSIVE MASTER PLANNING

• Why is a comprehensive utility master plan important?– Identify and coalesce around goals and drivers– Address critical infrastructure needs– Prepare for growth– Address the big picture– Develop actionable strategy

• The Goal:– Set a course for an efficient, 

practical, cost effective and robust utility infrastructure system

Energy Exchange: Federal Sustainability for the Next Decade

CONTEXT

• Application– Centralized/District Energy  Systems

– Campus/Installations

• Thermal Systems – Chilled Water– Steam– Hot Water

• Utility Coordination– Electrical– Natural Gas

Energy Exchange: Federal Sustainability for the Next Decade

MASTER PLANNING PROCESS

• Load Projections• Energy Considerations

– Chilled Water T– Steam vs. Hot Water

• Distribution Modeling– Period Simulation– Dynamic Analysis

• Design Considerations– Embrace Results

Energy Exchange: Federal Sustainability for the Next Decade

LOAD PROJECTIONS

• Building Demand– Diversified vs. Peak Load

• Modeling and Calculations– Energy Models– Benchmarks

• Production Capacity• Redundancy

– Radial Feed– Looped Distribution

Energy Exchange: Federal Sustainability for the Next Decade

ENERGY CONSIDERATIONS

• Chilled Water T– Control Strategies– Coils– Control valves

• Hot Water vs. Steam– Safety – Lower temperatures = less heat loss– Lower cost insulating materials– Operator knowledge & complexity– Condensate recovery– Building usage

Energy Exchange: Federal Sustainability for the Next Decade

DISTRIBUTION MODELING

• Approaches– Static Simulation– Dynamic Modeling

• Constructing a Model– Nodes– Pipe Data– Fittings– Production Sources– Pumps

Energy Exchange: Federal Sustainability for the Next Decade

DISTRIBUTION MODELING

• Evaluation Criteria– Flow Velocities– Pressure Limits

• Control Strategies– Variable‐Primary– Tertiary Pumps

Energy Exchange: Federal Sustainability for the Next Decade

SYSTEMS AND MATERIALS

• Infrastructure Options– Direct Bury– Trench Box– Walkable Tunnel

Energy Exchange: Federal Sustainability for the Next Decade

SYSTEMS AND MATERIALS

• Durable Structures– Concrete Specs– Admixtures– Reinforcing Steel– Waterproofing

Energy Exchange: Federal Sustainability for the Next Decade

SYSTEMS AND MATERIALS

• Piping System Materials– Welded Steel

• ERW• Seamless

– Pre‐insulated• Standard• Vendor Specific Systems

– Composites• PVC• HDPE

– Applicable Codes

Energy Exchange: Federal Sustainability for the Next Decade

RECAP – DISTRIBUTION PLANNING

• Load Projections• Modeling• Route Planning• Sizing• Design Criteria• Implementation Plan

Energy Exchange: Federal Sustainability for the Next Decade

CAMPUS IMPLEMENTATION EXAMPLE

• University of Oklahoma– Load Calculations– Model Development– New Utility Plant Location– Evaluation of bottlenecks– Interconnections– Pipe Sizing– Routing– Design Criteria

Energy Exchange: Federal Sustainability for the Next Decade

CAMPUS IMPLEMENTATION EXAMPLE

• University of Oklahoma– Design and Construction

• Parking Lots• Football Stadium• Campus Traffic• Pedestrians• Practice Field• Subsurface Conditions

Energy Exchange: Federal Sustainability for the Next Decade

CONCLUSION: COMPREHENSIVE MASTER PLANNING

• A comprehensive utility master plan is needed to:– Identify and coalesce around goals and drivers– Address critical infrastructure needs– Prepare for growth– Address the big picture– Develop actionable strategy

• Next Step:– Implement the plan to build an 

efficient, practical, cost effective utility infrastructure system

Contact:  Kevin Fox, P.E., CEMKevin.Fox@jacobs.com817.347.7600