30 May 2005

CLIMATE-CHANGE IMPACT OF SUPERMARKET REFRIGERATION SYSTEMS


Climate change impact of a refrigeration system, also termed Life Cycle Climate Performance, refers
to all of the warming impacts from use of the system throughout its lifetime, expressed in terms of carbon
dioxide-equivalent emissions. These include carbon dioxide emissions from fossil fuel power plants to
generate power to operate the system, plus refrigerant emissions during operation of the system, during
system maintenance, during end-of-equipment-life refrigerant recovery and/or disposal, plus other
emissions during refrigerant manufacturing and transport. At historical supermarket annualized
refrigerant emission rates of 30% of system charge per year, refrigerant emissions share of LCCP can
amount to over 60% of the total. This paper will provide a progress report on supermarket refrigerant
emission reduction programs, including system design options for reduced LCCP.