Molten salt can be employed as a thermal energy storage method to retain thermal energy collected by a solar tower or solar trough of a concentrated solar power plant, so that it can be used to generate electricity in bad weather or at night.
In addition to a washer's external dimensions, you will also want to think about size of the washing drum inside the unit. Excluding compact units, most of which have a drum somewhere in the 2-cubic-foot range, the majority of standard-size front- and top-load washer drums today range from roughly 4 to 5 cubic feet. That's a great range for a typical 8-pound load.
How much space do you have? Freestanding clothes washers typically range in width from 24 to 27 inches; 27 inches is the most popular size. Today's larger front loaders can be stacked with a matching dryer on top, so if you have the height, you can get two full-size appliances in your space instead of just one. Where will you install the washer?