Ultrabooks are distinguished from netbooks by offering more power in the form of faster processors and additional RAM, as well as better storage and larger screen sizes, features that also make these laptops significantly more expensive than most netbooks.
Desalination is a process that extracts minerals from saline water. More generally, desalination refers to the removal of salts and minerals from a target substance, as in soil desalination, which is an issue for agriculture. Saltwater is desalinated to produce water suitable for human consumption or irrigation. One by-product of desalination is salt.
It is possible to run a desalination plant on solar energy alone, but at a much smaller scale. Solar energy is in the form of heat. Photovoltaic cells transfer this heat energy into electrical energy, and this is then transferred into mechanical and heat energy again.he current power consumption for seawater desalination is less than 3 kWh/m3, which is a 90% reduction in energy use over the past 40 years. This is because of improvements in membrane technology and energy recovery systems.