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Energy Calculators
This document was specifically prepared to aid utility account managers who are working with C&I customers. Any other use of this material
(in whole or in part) is not allowed without the express written consent of Questline, Inc., 2025 Riverside Drive, Columbus, OH 43221.
Meet Your Panelists
 Mike Carter
 Mark Farrell
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Contents
 Calculators
o Motors
o Engineering Calculators
o VFDs
o Process Heating
o Lighting
o Food Service
o HVAC
o Cool Roofs
o Fuel Cost Comparison
o Home Energy Use
o Carbon Footprint
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What Makes a Good Calculator?
 Simple
o Limited variables
o Clearly stated assumptions
o Straightforward input to results
o Good aesthetics
o Layered for more detailed analysis
 Accurate
o Credible
o Repeatable
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Calculators
 Tools You Can Use
http://members.questline.com/ToolsYouCanUse.aspx
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Motor Calculator
 Simple formula
o kW = 0.746 x HP
motor efficiency
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Motor Calculator
 Engineering ToolBox
www.engineeringtoolbox.com
o Select “Electrical”
• Then "Electric Motor Calculator"
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Motor Calculator
 Motor Master+
o http://www1.eere.energy.gov/industry/bestpractices/motors.html
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VFD Calculator
Input Power (%)
 Calculation Challenge
140
130
Outlet Damper
120
Inlet Guide Vanes
110
100
Disc Throttle
Variable Pitch
Axial Fan
VFD
90
80
70
Ideal Fan Control
60
50
40
30
20
10
10
20
30
40
50
60
70
80
Flow Rate (%)
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90 100
VFD Calculator
 Honeywell
o One fixed lower speed
• Example VFD = 28%
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VFD Calculator
 ABB
o Multiple speeds
o Variable duty
cycle
o Flow rates (cfm)
o Efficiencies
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VFD Calculator
 Questline Advanced VFD Calculator
o 3 steps
o Simpler input
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VFD Calculator
 Questline Advanced VFD Calculator
o Energy
o Environmental
o Economics
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Lighting Calculator
 Multiple dropdowns
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Lighting Calculator
 Quick summary
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Lighting Calculator
 Questline Advanced Lighting Calculator
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Lighting Calculator
 Questline Advanced Lighting Calculator
o Energy
o Environmental
o Economics
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Lighting Calculator
 GE Lighting Calculator
www.gelighting.com/na/business_lighting/education_resources/tools_software
/toolkit/energy.htm
o Economics
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HVAC Calculator
 HVAC Calculator Challenge
o Energy use variables
• One ton cooling per 400 ft2 ???
• Heating estimates by climate zones ???
• Insulation levels ???
• Quality of construction ???
• Thermostat settings ???
• Number of windows ???
o Treat results as very rough estimates
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HVAC Calculator
 PNNL Rooftop HVAC Calculator
http://www.pnnl.gov/uac/costestimator/main.stm
o 15 variables
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HVAC Calculator
 Questline Advanced HVAC Calculator
o 10 variables
• Climate data
via zip code
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HVAC Calculator
 Questline Advanced HVAC Calculator
o Energy
o Environmental
o Economics
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HVAC Calculator
 FEMP HVAC Calculators
o Commercial Unitary Air Conditioners
http://www1.eere.energy.gov/femp/technologies/eep_unitary_ac_calc.html
o Air-Cooled Chillers
http://www1.eere.energy.gov/femp/technologies/eep_ac_chillers_calc.html
o Water-Cooled Chillers
http://www1.eere.energy.gov/femp/technologies/eep_wc_chillers_calc.html
o Commercial Heat Pumps
http://www1.eere.energy.gov/femp/technologies/eep_comm_heatpumps_calc.html
o Boilers
http://www1.eere.energy.gov/femp/technologies/eep_boilers_calc.html
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HVAC Calculator
 FEMP Water-Cooled Electric Chillers
o 9 variables
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HVAC Calculator
 FEMP Commercial Heat Pumps
o 14 variables
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HVAC Calculator
 DOE HVAC Software
http://apps1.eere.energy.gov/buildings/tools_directory/subjects_sub.cfm
o Whole Building Analysis
o Codes & Standards
o Equipment & Systems
• Building Envelope
• HVAC Systems
• Lighting Systems
o Other Applications
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Fuel Cost Calculator
 1 MMBtu Output
 Equivalent Btu
o Electric
o Natural Gas
o Heating Oil
o Propane
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Carbon Footprint Calculator
 Many out there
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Carbon Footprint Calculator
 Electric Generation
http://carma.org/
o Power plant
o Power company
o Geographic region
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Carbon Footprint Calculator
 Electric generation mix
oCARMA: Ohio
• 1,748 lb CO2/MWh
• 136 power plants
o
89% fossil fuel
o
10% nuclear
o
<1% hydro and
other renewables
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Carbon Footprint Calculator
 Fuel Conversions
o Electricity – CARMA or power company data
o Natural Gas – 12.06 lbs CO2/ccf [500 lbs/MWh]
o Heating Oil – 22.38 lbs CO2/gal [680 lbs/MWh]
o Propane – 12.67 lbs CO2/gal [590 lbs/MWh]
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Carbon Footprint Calculator
 Commercial
 Industrial
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Carbon Footprint Calculator
 Location Specific
 Building Specific
 Customizable
 Project Impact
oWhat-if ??
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Engineering Calculators
 Engineering ToolBox
www.engineeringtoolbox.com
o Select “Electrical”
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Engineering Calculators
 Engineering ToolBox
www.engineeringtoolbox.com
o Select “Electrical”
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Process Heating Calculators
 DOE Steam Systems Tools
http://www1.eere.energy.gov/manufacturing/tech_deployme
nt/software_ssat.html
o Scoping
o Modeling
o Insulation
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Process Heating Calculators
 DOE Process Heating Systems Tool
http://www1.eere.energy.gov/manufacturing/tech_deployme
nt/software_phast.html
o Heat balance
o Energy intensive
equipment
o “What-if” scenarios
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Food Service Calculators
 Food Service Technology Center
http://www.fishnick.com/saveenergy/tools/calculators/
o Cost of ownership
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Food Service Calculators
Electric Fryer Cost Calculator
o Input
• Preheat energy (kWh)
• Idle power (kW)
• Efficiency (%)
• Production
Capacity (lbs/h)
o Default
• Usage (hrs)
• Fuel cost
• Lifespan (years)
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Food Service Calculators
 Appliance Tech Assessments
http://www.fishnick.com/equipment/techassessment/
o Types
o Controls
o Heating
technologies
o Energy
consumption rate
o Efficiency
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Cool Roof Calculator
 Oak Ridge National Lab
http://www.ornl.gov/sci/roofs+walls/facts/CoolCalcEnergy.htm
o 243 locations
o 8 variables
o Savings relative
to a black roof
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Home Energy Use Calculators
 Lawrence Berkeley Lab
http://hes.lbl.gov/consumer/
o 20+ variables
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Home Energy Use Calculators
 Lawrence Berkeley Lab
http://hes.lbl.gov/consumer/
o Existing vs.
upgraded
• End-use costs
• Lbs CO2
o Itemized upgrades
o Roadmap to results
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Home Energy Use Calculators
 Questline Home Energy Analyzer
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Home Energy Use Calculators
 Questline Home Energy Analyzer
o <20 variables
o >20 Ways to Save
o Carbon equivalents
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Home Energy Use Calculators
 Analysis
oMonthly data
• January 2012 heating
o
Mouse-over
$148
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Home Energy Use Calculators
Heating System
Comparison
o Natural gas
furnace
o Heat pump
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Home Energy Use Calculators
Heating System Comparison
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Questline
 Go to www.questline.com
 Provided by:
Questline
2025 Riverside Drive
Columbus, OH 43221
800-824-0488
mcarter@questline.com
mfarrell@questline.com
Questline has received source permission to use the images found in this presentation.
All recipients must also obtain source permission before reusing the content in any other form.
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