CALCULATION SHEET FOR LEV VELOCITY PRESSURE METHOD ADAPTED FROM ACGIH 23RD ED.

[alexyeo]

I resigned from my job some time ago. With the new found free time and as a hobby, I have compiled a rather comprehensive LEV design calculation sheet based on ACGIH 23rd edition with full psychrometric corrections.

Although I wanted to compile this for the benefit of my ex-company during my time there, there simply wasn't any time allocation then.

Now that i compiled this in my own time, I am releasing the calculation sheet in this forum for the benefit (if any) of all.

Kindly do feedback any errors or possible area of improvements.

 

[alexyeo]

I have further improved the LEV calc sheet in Revision BETA1.2 with built in macros to enable quick input clear contents and also automated header & footer before print.

Also, I made similar improvement to the non-psychromatic revision of the calc sheet in Revision BETA0.4. BETA0.4 is a much straight forward calc sheet without the comprehensive correction in altitude, temperature and pressure correction at every segment of the system. Instead, it make use of global density via global temperature input at standard atmospheric pressure, and pressure correction at fan selection sheet. For a simple system, this would be much more intuitive and comprehensible to both users and reviewer.

Kindly do note that the files are in .xlsm format due to macros. I attached the files as .zip archive as .xlsm is not supported extension in this forum.

As usual, kindly do feedback any errors or possible area of improvements.