Compressed Air Best Practices - March 2008 - (Page 10)

| 03/08 Focus Industry FOOD PROCESSING | CO2 O kW Optimiz Optimizing Low-Pressure Systems A bakery ingredient processor initiated a plan to improve its existing low-pressure compressor system. T project was conceived as a means to upgrade capital equipment through the The assistance of the local electrical utility’s energy reduction rebate program. The project created an annua savings in electrical consumption of $543,440 per year annual This equi equipment upgrade might not have been considered in a routine Compressed Air System Energy A Audit because it involved compressed air under 25 psig — not the 100 psig utility air circuits that we usually read about. This process air system project generated power circu savings t were better than claimed by replacing three multistage blower packages with that the sa horsepower motors, better frame performance points and sequenced variable same spee speed controls. coo In cooperation with HSI, Inc (www.hsiblowers.com) and the electrical utility, the food proce processor purchased, installed and verified a production energy savings of 29.76% at the same level of production. That’s over 910 hp saved on a continuous basis. C onth of the M Air Audit d ompresse y ng Energ Savi s h Blower wit Canada in g w Balber By Andre March Audit of the Month Where: Canada Industry: Food Processing — Bakery Ingredients Issue: High Energy Costs and Fluctuating Demand Audit Type: Supply-Side Low-Pressure Air (11 psig) Utility Verification: Verified by local utility and partially financed Audit Summary: 1. Replace three existing blowers with new centrifugal blowers with higher efficiencies at base-loads 2. New VFD blower control system replaces inlet throttle system on first two blowers for increased turn-down capabilities and efficiencies at reduced load 3. New master control panel for automatic sequencing of blowers 4. Energy savings of 6,793,000 kWh per year worth $543,440 per year at the local rate of $0.08 per kWh Blowers Using Variable Frequency Drives Replaced Inlet Throttle-Valves Controls 10 www.airbestpractices.com http://www.hsiblowers.com http://www.airbestpractices.com

Table of Contents Feed for the Digital Edition of Compressed Air Best Practices - March 2008

Compressed Air Best Practices - March 2008 Contents From the Editor Utility-Air News The Compressed Air Audit of the Month: Saving Energy with Blowers in Canada Do You Provide World-Class Service? Managing Rotary Screw Air Compressors at Midwest Bakery The Difference Between Acfm and Scfm for Proper Vacuum Sizing Best Practices — Multi-Module Process Air Dryers The Vacuum Formation Process in Building Compressed Air Filter Elements Solberg Manufacturing Real World Best Practices: Measuring Pressure Dewpoint in a Compressed Air System Resources for Energy Engineers: Training Calendar & Product Picks Wall Street Watch Advertiser Index Job Market

Compressed Air Best Practices - March 2008

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