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SAE J2727 (SEP2023)

Current Revision

Mobile Air Conditioning System Refrigerant Emissions Estimate for Mobile Air Conditioning Refrigerants

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The system emissions chart contained herein is intended to serve as a means of estimating the annual refrigerant emission rate (grams per year) from new production A/C systems equipped with specified component technologies. It provides emission values for various component technologies that are currently available and can be expanded as new technologies are commercialized. This document provides the information to develop an Excel file template system emissions chart for system emission analysis. The chart includes automotive compressor technologies for conventional mobile air conditioning systems, as well as those using semi-hermetic compressors. Fully hermetic compressors contain the working electric compressor within a welded housing that allows little if any typical emissions and the emission value for this type of compressor is added as low, fixed value. This standard can be considered a companion document to SAE J2763. SAE J2727 estimates system emissions, taking into account production assembly variation and accounts for components that are 100% helium leak tested prior to vehicle final assembly. The results from SAE J2064 are used to better represent permeation emissions from different hose material and coupling configurations in this version. SAE J2763 may be used to quantify emissions from properly assembled systems. This estimate is does not apply to systems that use sealing technology that has not been characterized and included in the spreadsheet calculation, such as R-744 sealing designs.

SDO SAE: SAE International
Document Number J2727
Publication Date Sept. 6, 2023
Language en - English
Page Count 26
Revision Level 202309
Supercedes
Committee
Publish Date Document Id Type View
Sept. 6, 2023 J2727_202309 Revision
Nov. 30, 2020 J2727_202011 Revision
April 2, 2013 J2727_201304 Revision
Feb. 23, 2012 J2727_201202 Revision
Aug. 28, 2008 J2727_200808 Revision
July 12, 2007 J2727_200707 Revision
June 8, 2005 J2727_200506 Revision