30 May 2005

DEMONSTRATION OF ADVANCED INTEGRATED HVAC&R SYSTEMS IN A LOBLAWS SUPERMARKET IN CANADA


A demonstration project of innovative refrigeration system technologies has been underway in a
Loblaws supermarket in Canada with the technical support of the CANMET Energy Technology Centre-
Varennes (CETC-Varennes) from Natural Resources Canada. The technology implementation allows the
reduction of greenhouse gas emissions by approximately 75% and energy consumption by approximately
25% compared to a typical supermarket. The principal innovation at this 10,000 square-meter (102,000
square-feet) Loblaws is the installation of a secondary-loop refrigeration system integrated with the
building’s heating and ventilation system. The objective of the secondary-loop system is threefold: to
reduce refrigerant charge and therefore leaks, to facilitate heat recovery, and obtain a better quality of
cold to limit food spoilage. For instance, heat recovery provides for all heating and hot water demand and
allows the elimination of the furnace. The project detail and the performance analysis will be presented.