Environmental and Performance Studies of R-123 as a Chiller Refrigerant - Resulting Recommendations for Environmental Protection

This paper reviews the introduction, importance, and uniqueness of R-123 as well as theoretical and practical performance comparisons for alternatives. It explains why a suitable replacement neither has been identified nor is anticipated. The paper summarizes detailed environmental studies of this refrigerant, leading to recognition that its phaseout will result in greater environmental detriment than benefit. It suggests a simple path to address this concern that is consistent with the preamble to the Montreal Protocol, which stipulates that “measures taken to protect the ozone layer from depletion should be based on relevant scientific knowledge, taking into account technical and economic considerations.” The focal recommendation offered is based on environmental protection.