This research project examines the complexity of conveyor dishwashers, benchmarking water and energy use of old and new dishwashers operating in facilities and identifying strategies to sustain the savings potential of high-efficiency machines. The catalyst for this study was receiving funding from Metropolitan Water District’s Innovative Conservation Grant Program and co-funding from Pacific Gas and Electric Company. These machines are the most water and energy intensive appliances in commercial kitchens with older dishwashers using two to three times their anticipated hot water use when factoring in the manufacturer’s specifications of rinse flow rate and tank volume.
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