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.
A pedestal washer is a smaller washer that fits underneath your main washing machine, allowing you to do two loads of laundry at the same time. One thing to consider is that pedestal washers raise the main washer off the floor by 12-16 inches, making it easier to reach inside the wash bin, but also taking up more space.