As the heart of a refrigeration system, the compressor is a vapor pump that creates the system’s required pressure differences between the low and high sides of the system. In addition, it raises the ...

Supermarket refrigeration systems, rooftop chillers, walk-in fast-food-restaurant freezers, and refrigerated rail cars vary greatly in size and appearance. Yet they all share the same basic principles ...

Refrigeration can truly be said to be at the heart of a supermarket’s business — not to be trifled with — which makes what Sobeys is doing fairly remarkable. Canada’s second largest food retailer, ...