This paper outlines the new design standard for refrigeration to all Waitrose new stores and major refits. It demonstrates how refrigeration integrates with building services and explains why hydrocarbon refrigerant was selected. The significant carbon and cost savings achieved through virtually total leakage elimination and improved store energy efficiency are quantified.This paper also shows how HC refrigerant has been safely applied in equipment ranging from display cabinets to chillers, and the procedures which have been developed so engineers can work safely on HC systems.

Hydrocarbons in commercial refrigeration

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