Progressive Energy, Environment, & Sustainability Summit 17 Denver, CO Compressed Air - What a Waste! Presented by: September 17, 2013

COMPARISON OF COSTS ELECTRIC vs. AIR MOTOR Approx. $200/year Approx. $1,500/year Power Cost Power Cost * Air Motors Require About 7 hp of Compressor Capacity or cfm/hp Output Based on 5,000 hours/year at $0.05/kWh

Why Is Compressed Air So Inefficient? Less than 20% of input energy available for work Pressure drops and regulators reduce useable energy Typical air tool has 12-15% overall efficiency

How Much ?!?! A Question of Initial $0.06/kwh, a single stage rotary screw compressor costs about $10,000/year per 100 cfm to operate!

Reciprocating ScrewCentrifugal

Leaks Dryer Selection and Operation Compressor Controls Drain Traps Eliminate Open Blowing VSD on Compressors Storage Targeted Savings Potential

Goal: Change Culture and Attitudes to Achieve Energy Savings Concerns Cited by Most Plant Personnel (in Decreasing Order of Importance): 1. Reliability 2. Air Quality 3. Preventative Maintenance 4. Efficiency and Operating Cost What it takes: Education, Information, Demonstration = Transformation Facility Goals

Success Stories: Airometrix Projects Sample of 67 Projects 189,000 hp of Compressors Analyzed/Tested 650 million kWhs of Energy Consumed 135 million kWhs Saved - 21% Savings 22 MW On-Peak Demand Savings $8.6 Million in Annual Customer Savings 0.7 Year Simple Payback Sample of 67 Projects 189,000 hp of Compressors Analyzed/Tested 650 million kWhs of Energy Consumed 135 million kWhs Saved - 21% Savings 22 MW On-Peak Demand Savings $8.6 Million in Annual Customer Savings 0.7 Year Simple Payback

Case Studies On-Line hp kWh Saved % Saved $ SavedCostPayback (yrs.) Food Processo r 1,2001,700,00062%$ 187,000$ 62, Project Included: Leaks, Nozzle Replacement, Controls Modifications Project Included: Leaks, Controls Upgrades, VSD Compressor, Dryer Modifications On-Line hp kWh Saved % Saved $ SavedCostPayback (yrs.) Chemical Plant 4501,400,00044%$ 97,500$ 112,

Case Studies Project Included: Leaks, Air Horns, Air Lances, Compressor Controls & Repair On-Line hp kWh Saved % Saved $ SavedCostPayback (yrs.) Mining1,9602,300,00023%$ 174,000$ 24, On-Line hp kWh Saved % Saved $ SavedCostPayback (yrs.) Food Processo r 7,5006,400,00034%$ 350,000$ 130, Project Included: Compressor, Dust Collector, & Dryer Controls, Leaks, Pressure Reduction

What You Can Do: Evaluate Compressed Air Leaks: Target < 5% of load Optimize Compressor Energy: Testing, Storage & Controls Evaluate End-Uses: Open Blowing, Pressure Requirements Evaluate Compressed Air Leaks: Target < 5% of load Optimize Compressor Energy: Testing, Storage & Controls Evaluate End-Uses: Open Blowing, Pressure Requirements

Independent, third party, vendor-neutral engineering firm Over 200,000 hp of air compressors tested and analyzed Have helped customers identify over $38 million in Gas, Water, and Electricity costs savings Focus: compressed air, ammonia refrigeration, turbines, steam Worked with over 250 utility programs Independent, third party, vendor-neutral engineering firm Over 200,000 hp of air compressors tested and analyzed Have helped customers identify over $38 million in Gas, Water, and Electricity costs savings Focus: compressed air, ammonia refrigeration, turbines, steam Worked with over 250 utility programs Who we are:

Questions? Presented by: Scott Stroup, President Airometrix Mfg., Inc. (303) Presented by: Scott Stroup, President Airometrix Mfg., Inc. (303)