Requirement Summary
This measure can be claimed if all the dishwashers installed in the building are water efficient (low consumption). This can be demonstrated when the purchased dishwasher(s) use less water than the base case. The base case dishwasher uses 5 liters per rack.
Intention
Minimize the water consumed by the dishwashers installed in the building.
Approach/Methodologies
The dishwasher consumption can be as low as 4 liters per load or greater than 21 liters per load. In a load two racks can be filled up. EDGE measures the water consumption per rack, which is calculated with the maximum total water consumption in liters divided by the number of racks in the dishwasher. The maximum total water consumption is taken from the manufactures datasheet on the cycle of the dishwasher that uses the most water. This measure can be claimed as long as the dishwasher uses 2 liters per rack or less.
Potential Technologies/Strategies
Dishwasher Overview | Key Features of Efficiency |
About 60% of the energy used by a dishwasher goes towards water heating; therefore, models that use less water also use less energy. |
An efficient dishwasher should:
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In terms of dishwashers, the way that occupant use them also influence the water performance. It is important to provide users with guidelines outlining the benefits of these appliances, and the best way to achieve maximum efficiency.
Relationship to Other Measures
Water reduction in the 'Kitchen' section of the water chart is expected by water efficient dishwashers. Moreover, it shows reductions in energy due to equipment and pumps which is part of 'Others.'
Assumptions
The base case assumes standard dishwashers with a water consumption of 5 liters per rack, while the improved case assumes 2 liters per rack, which is 60% more efficient.
Compliance Guidance
Design Stage | Post-Construction Stage |
At the design stage, the one of the following must be used to demonstrate compliance:
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At the post-construction stage, one of the following must be used to demonstrate compliance:
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