Abstract
Industrial refrigeration can be found in many types of applications such as food processing, product preservation, and more. In many cases, it can represent one of the largest energy consumers in a facility. Studies show that it is possible to reduce energy consumption by up to 40 percent in industrial refrigeration systems. This article presents an analysis of the energy conservation opportunities identified in an ammonia-based industrial refrigeration system in a Canadian warehouse. Some of the energy conservation opportunities included in the analysis are: application of a floating head pressure control; application of variable-frequency drives in evaporator fans; optimization of hot gas defrost; heat recovery opportunities from the evaporative condensers; reduction of infiltration of air in cold storage; application of bi-level lighting control in the lamps in the cold storage; and application of screw compressor VFD controls.
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