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Old March 13th, 2018, 05:40 PM   #5
boneless
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boneless is offline
 
Join Date: Feb 2008
Location: OKC
Posts: 1,464
Example from my world.

I want to get a certain temperature (by slowing down flow through a heat exchanger), but I want a minimum flow. Here the highest of the two determines the output.

I want a certain power use on a boiler, but I don't want to exceed my temperature. Here the lowest of the two determines output.
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