steam turbines Archives - Michaels Energy

Jun 06

Learning Calculus via Demand and Energy

By Jeff Ihnen Energy Rant 2 Comments

Last week, I was commenting on some retro-commissioning findings, and I was considering demand savings estimates versus energy savings estimates. A colleague asked, “If you are aware of any energy versus demand papers I would like to know more.” I was informed that the Association of Energy Engineers coursework for becoming a Certified Energy Manager only skims the surface, using a garden hose as a metaphor, for demand and energy. The flow of water represents the flow of power (kilowatts), and the water represents energy – the sum of power over time. This is a disservice because demand charges can…

May 31

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Atmospheric Cooling = Strong Tornadoes

By Jeff Ihnen Energy Efficiency One Comment

We interrupt this rant for this special announcement. Our cold spring in the northern plains is wreaking havoc in the form of tornadoes in the southern and middle parts of the country. I think the weather phenomena had a lot to do with my interest in mechanical engineering. Growing up on the farm in the flatlands, I had seen a great many black clouds approaching on the horizon. As they drew closer, they would either brighten to a lighter gray and rain, or they get ugly. If the approach is led by a dark band of clouds followed by blue-green…