Desalination Seawater Vacuum at low Temperature
Desalination of seawater is a
process that provides freshwater; its usefulness is necessary well
established; its main drawback is its hunger for energy. There are two main
methods, distillation and reverse osmosis: These both techniques, booming (average energy cost (≈ 4.5 kWh / m3 /250 gals. ) are proven systems that have shown their reliability. ( Wikipedia)
Desalination
of seawater is a process that provides freshwater, its usefulness is well
established; there are two main methods, distillation, and reverse osmosis; both
techniques were booming a major drawback: the cost to the operation which is
very energy-intensive. Average energy cost (≈ 4.5 kWh / m3 / 264 gallons).
(Wikipedia)
Here is a
project of desalination of seawater, which can significantly reduce the price
of the produced freshwater.
This method
is based on using a vacuum associated with seawater's low boiling temperature,
about 50 ° C. (120 ° F). The condensation temperature is about 25 ° C. (77 °
F.).
Note:
Note:
I only adapt his exploit to technology and know-how of today, defining in detail the technical feasibility
and demonstrating the economic viability of the process.
This task may be performed by:
1. Thermal
solar panels.
2. The
regenerative thermal energy (cogeneration) is usually wasted by the condensation of a device, coastal Thermo-electric plants.
3. The
regenerative thermal energy (cogeneration) is usually wasted by cooling devices,
thermal motor drives, boats, ships or submarines, etc.
The
main components are:
Seawater
pump 1; Seawater filter 2; sea water tank 3; (These three components are
similar to the usual classical devices). Tank warm seawater 4; soft tank condensation of freshwater 5;
Freshwater castle 6; input heating circuit 7; circulation pumps 8a, 8b; Fresh
water pump 9; fluid detectors 10; solenoid valves 11 a, 11 b; seawater pump
12; Unidirectional valves 13 a- A 13 b; 14 vacuum pump, the vacuum can
be performed by a conventional vacuum pump or an alternative element that will
be defined later characterized in particular by its low cost and its paltry
energy consumption.
The seawater
desalination device under vacuum at low temperature integrates science,
technology, techniques, and know-how today. It is very effective in energy consumption; Pump pressure is less than 1 ≤1, 1 bar (psi ≤ 16). In
practice, it can range from 0.2 to a bar.
See the schematic drawing.
- Operation:Seawater pumps 1; the seawater filter 2; sea water tank 3; (No significant change, with conventional devices). Fluid in circuit 7, powered by solar panels and/or cogeneration systems; Pump 8 has to lead the cold seawater to tank 4 via condensation tank 5; seawater pump 12 expelling the concentrated saltwater back to the sea and/or the crystallization apparatus (product of salt of excellent quality).All detectors fluids 10, temperature sensors, pressure sensors, fluid levels, range of vacuum; electric valves; Water pumps; Timing; sequencer; emptied non-condensable vapors; hunt the concentrated saltwater; reduces the migration of seawater to freshwater, etc. ... transmit data to the electronic controller (home) to ensure optimal...Application:Clean ecological and economical way to convert seawater into freshwater.1. Solar energy Thermal panels.
