A PARTIALLY EVACUATED MULTI-STAGE SOLAR STILL

摘要

THE PRESENT INVENTION RELATES GENERALLY TO A PARTIALLY EVACUATED MULTI-STAGE SOLAR STILL FOR THE DESALINATION OF SALINE WATER. THE SOLAR STILL COMPRISES A COLOUMN (11) HAVING AN AIRTIGHT WALL SUCH THAT PRESSURE IN SAID COLOUMN (11) MAY BE MAINTAINED, A WATER STORAGE TANK (12) PLACED ON TOP OF SAID COLOUMN (11), A PLURALITY OF SALINE WATER BATH (13) ARRANGED IN STACK INSIDE SAID COLOUMN (11) AND A HEATING MEANS (14). TO LOWER THE BOILING POINT OF THE WATER AND TO INCREASE EFFICIENCY OF THE SYSTEM THE COLOUMN (11) IS DE-PRESSURISED.