Who invented psychrometric chart

The most humid air that occurs naturally has about 3 to 3. As it turns out, a fellow by the name of Willis Carrier developed a tool that became enormously useful in the 20th century: the psychrometric chart. It allows us to locate the state point for a particular volume of air and then plot the changes it goes through as the conditions change.

So where does the psychrometric chart come from? In psychrometrics, we care mainly about the yellow region and what happens at the boundary between the vapor phase and the liquid or solid phases.

That boundary in the pressure-temperature diagram is the same boundary you see in the psychrometric chart. In the yellow region, water vapor behaves pretty much like an ideal gas, so that and the pressure-temperature diagram take us back to our introductory chemistry class. Vapor Retarder? Vapor Barrier? What the Heck?! NOTE: Comments are moderated. Your comment will not appear below until approved. The chart form is Hmmm. The chart form is intimidating.

I have found them to be far more useful than the charts for my purposes, but maybe I am not seeing the whole picture. Their hard work paid off when the curtain went up. The ladies put away their fans and the actors performed in comfort. Air Conditioning was now the talk of Broadway.

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What size kite do you use in 15 knots of wind. When was kiteboarding invented. Q: Who invented the psychrometric chart?

Write your answer Related questions. What is the temperature at which air is saturated? Where can one use a psychrometric chart? How many properties must be known to locate an unknown property on the psychrometric chart?

What is psychrometric chart? Willis H. The article draws heavily on this source for biographical details as well as his career and achievements. Google Scholar. Download references. You can also search for this author in PubMed Google Scholar. Correspondence to R. Reprints and Permissions.