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This document presents a method for estimating leak rates from a system using spreadsheet models and pressure loss data. Nitrogen was used in a leak test of a refrigeration system to model the pressure loss over time. The pressure loss data was fit to an orifice flow equation model to determine the pseudo orifice coefficient and initial pressure. This allowed calculation of the ammonia leak rate, which was determined to be below the reportable threshold of 100 lb per day. A least squares technique was used

Author

RoBoger

Language

EN