How Did They Figure That?

Dick Bennett

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How Did They Figure That?

机译：他们是如何知道的？

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Sizing burners and heating systems and figuring what they'll do at different flow rates require a number of different calculations. To the uninitiated, it can appear pretty complex and intimidating — after all, you have to know the effect of flow rates on pressure differentials and vice versa, and sometimes the effect of things like temperatures, fluid densities and orifice sizes on flows and differentials. It must take a whole textbook full of equations to figure all this stuff. Nope — one equation will do. You just have to know how to tweak it for different situations. Plenty of times, I've had to do a flow or pressure drop calculation on the fly with nothing more than a pencil, paper and pocket calculator. As long as I can remember that one handy-dandy equation, I'm in business.

机译：确定燃烧器和加热系统的大小并确定它们在不同流量下的作用需要进行许多不同的计算。对于初学者来说，它看起来可能非常复杂且令人生畏-毕竟，您必须了解流速对压差的影响，反之亦然，有时还需要了解温度，流体密度和孔口尺寸等因素对流量和压差的影响。必须用一本完整的方程式教材来解决所有这些问题。不，一个方程式即可。您只需要知道如何针对不同情况进行调整即可。很多时候，我不得不用铅笔，纸和袖珍计算器即时进行流量或压降计算。只要我能记住一个方便的公式，我就在做生意。

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《Process Heating》 |2005年第5期|p.17-18|共2页
作者
Dick Bennett;
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作者单位

Janus Technology Group Inc., Rockford, Ill.;

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正文语种 eng
中图分类热力工程、热机;
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How Did They Figure That?

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