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# Pressure Enthalpy

Member Posts: 2,217
Prof.

I just polished off volume 1 of the demystification series. I liked it!

Now I got this idea that I would like to keep a Pressure Enthalpy log on all the units I install and service. That would allow me to monitor any changes in the system performance on a yearly basis. Problem is,  I am much to lazy to plot this on every service! I would like to do it with an app or software. I downloaded CoolPack but it is all metric and a real PITA.

Anybody know of anything I could use?

Any other suggestions of logging performance?

Harvey

• Member Posts: 7,265
Metrics:

If you can count money, you're using the metric system.

Everything is in groups of ten. Ten Fingers, ten toes.

I Millimeter (a little bitty mark). 10 little bitty marks = Centimeter. 100 Centimeters = Meter. 1,000 Meters = kilometer.

Same with liquid measures. Same tens. How much is 2 liters? As big as a big bottle of diet coke. One liter is a smaller big bottle of diet coke, Most bottled water is a 1/2 Liter or 500 Milligrams. Drink four small bottled water and you drank equivalent of  a big bottle of diet coke,

You've been using it for years. Many things you deal with on a regular basis are already metric.  Buy an inch/metric rule. Don't try to convert. Just use one or the other. If you want accurate measures, or you need complicated math, you'll see how much easier it is to count fingers and does compared to the length of some long dead king's foot.

In your head, divide 48.8 mm. in half. Divide 19 3/16 in half accurately. Same measurement. One's 3 digits, the other is 5 digits.
• Member Posts: 2,144
PE + JB

Hi Harvey, download &read this Jim Bergmann ,HVACR Technical Specialist, article ; Testo, Applications Guide, AC & Refrigeration," An Essential Reference For The Advanced Technician", 70 pages of real good ,real neat,really interesting knowledge. Add this to Pressure Enthalpy!
• Member Posts: 2,653
Boiler Guy
• Member Posts: 2,217
Thanks

Thanks guys. I sit here with thunderstorms blowing through and rain pelting on the windows. A perfect night for some reading!

Harvey

• Member Posts: 2,144
edited May 2014
PE&JB

Hay Harvey, did you enjoy JB's words of wisdom? . Did you make any connection between PE + JB? It can't still be storming there, can it?
• Member Posts: 2,217
Only storm is in my head.

With my brain reeling in shock from all the information I have been force feeding it lately ;-)

Still working on JB's stuff. He seems like a very sharp guy that just goes ahead and gets it done. I like that!

Harvey

• Member Posts: 2,144
edited May 2014
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