Industrial Utility Efficiency    

Magazine

July 2018 Edition

Woodworking

Featured Articles

When Planning Efficiency Upgrades, Don’t Ignore Vacuum - Reduced Power Consumption and Utility Incentives Drive Cost Savings

By Scott A. Williams, Contributing Editor

Electric utility incentive programs encourage industrial and manufacturing companies to reduce power consumption by paying part of the cost to upgrade to more efficient equipment. It’s a great concept, but many customers only go after low-hanging fruit, such as upgrades for lighting or air compressors, and go no further.

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Reducing Demand in Industrial Vacuum Systems

By Tim Dugan, P.E., President, Compression Engineering Corporation

This article will focus on optimizing the demand-side so the centralized “supply-side” (the vacuum pumps and controls) can then run at a lower energy and maintenance cost. First, I will start with a simplified model of a vacuum pump system demands. See Figure 1 for a one-pump/one-demand simplified system. See Figures 2-6 for some typical controlled and uncontrolled demands. The symbol with the three lines is an orifice, a hole essentially. I am defining three types of system demands adding up to the total demand on the vacuum pump.

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Proper Blower System Design for Variable Wastewater Depth Processes

By Tom Jenkins, JenTech Inc.

Most blower applications for wastewater treatment are for conventional activated sludge aeration. The water level is typically constant, and pressure variations are usually less than one psi. There are other applications, however, that undergo significant variations in water level. These processes present challenges, but they can be accommodated with proper blower system design.

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