This is an out of print item which has been scanned and made available electronically.

The research in this project was derived from RP-556. The purpose of the research was to develop a set of algorithms and related computer programs in the area of HVAC acoustics that are useful and reliable. All algorithms were to be based on currently verifiable published and unpublished test results. The objectives of this project were to: (1) develop algorithms in English, along with discussions related to the development of the algorithms, references, and other appropriated data; (2) develop computer programs associated with each algorithm programmed in Basic; and (3) produce a final report in a form that could be readily published by ASHRAE.  

This book, published in 1991, was the final result of that research. However, it is now out of print as the sponsoring technical committee considered it to be out of date. ASHRAE has made this scanned copy available believing that it does contain sound algorithms to be used to predict acoustical performance of fans, ductwork, walls, ceilings, etc. Algorithms written in Basic with support documentation included.

Added as a scanned document on October 15, 2000.