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Energy and Water Consumption Testing of a Conventional Dishwasher and an Adaptive Control Dishwasher.


pdf icon Energy and Water Consumption Testing of a Conventional Dishwasher and an Adaptive Control Dishwasher. (1232 K)
Castro, N. S.

International Appliance Technology Conference. Proceedings. May 1997, Columbus, OH, 1-13 pp, 1997.

Sponsor:

Department of Energy, Washington, DC

Keywords:

dishwasher; residential dishwashers; energy standards; energy consumption; test procedures; water consumption; dishwasher performance

Abstract:

In an effort to determine whether the Department of Energy (DOE) test method for dishwashers, contained in 10 CFR Part 430, can effectively measure the energy and water consumption of models using new technologies as well as conventional models, tests were conducted on a conventional and an adaptive control dishwasher. The adaptive control dishwasher represents a class of innovative models which measure certain quantities (e.g., turidity, water temperature) and adapt to the information by shortening or extending the wash cycle. The results showed that the adaptive control model had an energy factor of 2.41 cycles/MJ (0.67 cycles/kWh) compared to 1.58 cycles/MJ (0.44 cycles/kWh) for the conventional model. However, the high energy factor of the adaptive control model, caused by the control action to shorten the cycle due to the lack of soils in the test method, is not representative of a typical cycle in actual field applications. This points out the need for revisions in the DOE dishwasher test procedure to obtain efficiency factors which consumers can rely on for making purchase decisions.