Vacuum Distillation of Sea Water
Existing technologies can be blended to supply cold & fresh
water from saline or brakish water in hot arid regions for drinking and for
growing plants in green house. I have designed a concept of VACUUM DISTILLATION
for desalination of sea water and it has proved an efficient concept in my
small lab facility and now I present here its Design details for the world to
try out at large scale facility.
The design for the plant
essentially consist of four cheap compact linear flat mirrored reflectors for
Concentraging solar power, a steam generator, a continuously working vacuum
pump for reducing pressure, Claude's chamber andd oh! Saline water supply and
FREE sunlight.
The reflectors concentrate
sunlight onto the base side of steam generator/boiler where sea water quickly
heats up to boiling point at lower than normal boiling temperature ( as
pressure inside is kept low by vacuum pump); the vapour is then pumped towards
a chamber where it accumulates ( inside insulated walls) creating high pressure. After achieving certain
pressure the vapour moves the heavy lid of the chamber upwards and the vapour
travels through pipes (cooled by in-flowing
sea water) towards Claudes chamber. Cold water is obtained at the bottom
of claudes chamber (through Joule-Thomson effect) and if the system is to be
used for cooling green house too, then, the cold vapour (vapour after it has
turned piston) can be fanned-in towards the green house. 
Here, the waste heat is maximum utilized by by collecting the waste
heat from condensing water vapour and pre-heating the incoming water source,
thus making the vapour generation faster and hence the system more efficient.
If more useful external work is to be done then the hot vapour from the high
pressure chamber can be passed through point X to move the piston and then
towards the Claudes Chamber.
Design : Assassin Adhikari
Vidur, Nuwakot, Nepal
To contact:
assassin.yours@gmail.com
