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Thanks for the info. I have looked into IIAR literature recently to find some answers. One of the guys I work with is also a member/auther of IIAR. He tends to agree with you that each case needs to be evaluated. Hank Bonar suggested a spreadsheet at this year's IIAR convention, and...

I have been asked to put together a spreadsheet to calculate when to use either single to 2 stage compressors on ammonia systems. I can't seem to find much other than an article in this years iiar convention book that says you should have other considerations for calculating... basically, I...

mdry, I have not yet found anything on the expansion of ammonia. I have been searching for days. I really need to get something so I can get my spreadsheet finished. I have found several different values for the density of liquid ammonia, can't really find an answer on the speed of sound of...