Public and Commercial CHP Screening tools

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Public and Commercial CHP Screening tools Their
Capabilities
Brendan OConnor Northeast Combined Heat and
Power Application Center CEERE, University of
Massachusetts June 23, 2004

Brendan OConnor
University of Massachusetts
06/23/2004
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INTRODUCTION
Existing CHP Software
Select Program Capabilities
Examples

• Industrial Facility
• High School

Sensitivity Analysis
Conclusions
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CHP SOFTWARE
Screening Level Tools
Steam Turbine Tools

• BCHP Tool
• CHP Tool
• Cogen Pro
• Building Energy Analyzer
• Ready Reckoner
• D-Gen Pro
• MAC CHP Assessor
• FEMP CHP Screening Tool

• SSAT
• Turbo-Steam On-line Calc.
• Dresser Rand

Detailed Design Tools

• Gate Cycle
• Recipro
• Plant Design Expert
• Heatmap CHP
• GT-Pro
• SOAPP-CT.25

Excel Based Programs
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SOFTWARE OVERVIEW

• General Capabilities

Note
Handout in more detail
Can Do

• Electric load
• Thermal load
• Prime mover selection
• Heat recovery info
• Utility rates
• Standby rate
• Sellback options
• Economic analysis

Cant Do

• Permitting
• Meter requirements
• Interconnection
• Equipment Location
• Gas Pressure
• Benefits of Power Quality and Reliability

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SOFTWARE DETAILS
MAC CHP Assessor

• Developer Midwest CHP Application Center
• Prescreen Level Tool
• Load Model
• Monthly energy bills
• Operating hours per year
• System Model
• Recip engines, Gas turbines, Microturbines, PAFC
• Absorption Chiller, Desiccants
• Economics Simple Payback
• Emissions Rules of thumb
• Cost Free
• Available on the web http//www.chpcentermw.org/
  10-00_tools.html

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SOFTWARE DETAILS
Ready Reckoner

• Developer Sinclair Knights Merz Pty Ltd
• Oak Ridge National Lab has made it available in
  the US
• Screening Level Tool
• Load Model
• Load based on periods of operation
• System Model
• Recip engines, Gas turbines, Combined cycle
• Absorption chillers
• Economics In-depth
• Emissions CO2
• Cost Free
• Available on the web http//www.ornl.gov/sci/
  eere/der/sia.htm

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SOFTWARE DETAILS
D-Gen Pro

• Developer Gas Technology Institute
• Screening level analysis tool
• Load Model
• Hourly load profile Monthly energy bills
• System Model
• Recip engines, Gas turbines, Microturbines
• No cooling
• Economics In-depth
• Emissions CO2, NOX, SOX
• Cost 675
• More information
• http//www.interenergysoftware.com

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EXAMPLE 1Industrial Metal Plating Facility

• Connecticut
• 150,000 ft2 facility
• 24 hours per day, 5 days per week
• 584,500 in Electricity Costs per year

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METAL PLATING FACILITY

• 491,000 in Natural Gas per year
• 68,557 MMBtu Consumption
• Steam 47 psig

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METAL PLATING FACILITYWith MAC CHP ASSESSOR
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METAL PLATING FACILITYWith MAC CHP ASSESSOR
Main input Screen Input all things yellow
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METAL PLATING FACILITYWith MAC CHP ASSESSOR
Load Duration Curve
Prime Mover Recommendation
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METAL PLATING FACILITYWith MAC CHP ASSESSOR
T/E Ratio
Prime Mover
Abs. Chiller
Operating Hours
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METAL PLATING FACILITYWith MAC CHP ASSESSOR
Results
Simple payback 3.1 Years
Rules of Thumb Used in Calculations
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METAL PLATING FACILITYWith READY RECKONER
Series of Input Screens
First Screen
Number of Periods
Cogeneration Configuration
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METAL PLATING FACILITYWith READY RECKONER
Thermal Need
Number of Units
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METAL PLATING FACILITYWith READY RECKONER
Input Facility Energy Demand
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METAL PLATING FACILITYWith READY RECKONER
Various Design Windows
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METAL PLATING FACILITYWith READY RECKONER
Implementation Cost
Unit Selection
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METAL PLATING FACILITYWith READY RECKONER
Utility Rate Modeling
Period 1 Demand charges OM Charges
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METAL PLATING FACILITYWith READY RECKONER
Results
Simple Payback 208 Years!
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METAL PLATING FACILITYWith D-Gen Pro
Series of Screens
Project Info.
Facility Info.
Facility Type
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METAL PLATING FACILITYWith D-Gen Pro
Hourly Load Profile
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METAL PLATING FACILITYWith D-Gen Pro
Monthly Energy Consumption
Import Monthly or Hourly Data
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METAL PLATING FACILITYWith D-Gen Pro
Detailed Utility Rate Model
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METAL PLATING FACILITYWith D-Gen Pro
Prime Mover Selection
Deployment Strategy
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METAL PLATING FACILITYWith D-Gen Pro
Implementation Cost Estimated
Results 16 Page Report
Simple Payback 37.0 years
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METAL PLATING FACILITYSUMMARY
Conclusions
Accuracy?
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EXAMPLE 2Evanston Township High School

• Evanston, Ill
• 1.3 million ft2
• Year Round School Programs
• 800,300 in Electricity per year

Daily Electric Demand Profile
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EVANSTON HIGH SCHOOL

• 426,500 in Natural Gas per year
• 105,270 MMBtu Consumption
• Absorption Chiller for Space Cooling
• Steam 110 psig

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EVANSTON HIGH SCHOOL
Implementation

• Peak Shaving Operation
• (3) 800 kW Recip Engines
• Exhaust Heat Recovery

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EVANSTON HIGH SCHOOLWith MAC CHP ASSESSOR
Model Similar to First Example
Three, 800 kW Recip Engines
Simple Payback 3.7 Years
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EVANSTON HIGH SCHOOLWith Ready Reckoner
Peak Hour Operation
No Part Load Modeling
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EVANSTON HIGH SCHOOLWith Ready Reckoner
Simple Payback 7.9 Years
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EVANSTON HIGH SCHOOLWith D-Gen Pro
Utility Rates In Database!
Default Load Profile for School with Summer
Cooling
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EVANSTON HIGH SCHOOLWith D-Gen Pro
Deployment Strategy
Simple Payback 5.2 Years
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EVANSTON HIGH SCHOOLSUMMARY
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SENSITIVITY ANALYSIS
Ready Reckoner

• Fuel Cost
• Capital Cost
• Discount Rate

• Electricity Import
• Electricity Export

NPV
Electricity Cost ( Variation)
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CONCLUSION
Increasing
MAC CHP ASSESSOR

• Required information
• Time
• Detail
• Accuracy

READY RECKONER
D-GEN PRO
Program Capabilities
Required Information