CHEAP DRINKING WATER ELECTRICITY from MID-SEA - tech - LTTD & OTEC by NIOT Chennai.-Comml viability?

Since density of pure water is less than that of sea water, the desalinated water will stay afloat and easy to tow the bags to the shore by boat and with 5 trips between sea shore and plant will ensure the daily supply of 10 million litres of drinking water cheap water from LTTD is better than desalination using the Reverse Osmosis technology because of project cost – land usages, etc.,

As of OTEC success story of cheap generation of electricity we can see LTTD delivering cheap drinking water and Tamil Nadu India need not look at neighboring states for water from Cauvery/Krishna Rivers any more.

The mute question is really these projects are commercially viable. Barge or Mid-sea Platform will cost about 500 million dollars (Rs.200 Crores) what will be Return on Investment (ROI) with Maintenance, Overhead, Depreciation, etc., How much will be fuel, lubricants, consumable cost for running the Plant – Diesel/Petrol is required for operating sucking Pump, Boat, etc.,

Ammonia is required as medium as coolant, Operation cost of Heat Exchangers. Cost of Water Bags, and its cleaning cost. Labour requirement to handle about 10 million litres of water both at the Plant and at the Seashore. Transportation cost from Sea Shore to end-users (consumers). How many trips one boat can have voyage between Plant & Seashore (30 KM) – can the boat have a speed of 14 knot (kn), if so one boat service requires about 6 to 7 hours to cover 60 kms. (up and down).

Whether the barge/plant measuring 100M x 20 m is good enough to accommodate so many workmen and to have a temporary storage and packing facility of about 100 million litters of water. What will be the operation cost?

Coolant medium Ammonia is a toxic gas, occident prone – what are the accident records while operating similar OTEC Plant at Tuticorin. When electricity generation with the OTEC is a success story, why one should think of using the same plant for LTTD aborting OTEC project.

Mind-boggling. As NIOT succeeded in OTEC Electricity generation, let us hope the same result with LTTD cheap drinking water project.

thanks Mr. Sam

Nuclear Desalination Demonstration Project (NDDP)

at Kalpakkam aims for demonstrating the safe and

economic production of good quality water by

nuclear desalination of seawater comprising of 4500

m3/d Multistage Flash (MSF) and 1800 m3/d

Reverse Osmosis (RO) plant (Fig.1). MSF plant

uses low pressure steam from Madras Atomic

Power Station (MAPS), Kalpakkam

for more details you can visit their web site they give you excellent information.

as per LTTD project research by NIOT -- RO is exhorbitantly costly - there are number of reports in the press from NIOT.

Since Chennai is experiencing acute water and power shortage I have a very special interest on this subject. If you have any details on LTTD economies and viabilities post it at Y/A for community's information.

ONE CAN UNDERSTAND THAT DENSITY OF PURE WATER WILL BE LESS THAN THAT OF SEA WATER BUT I COULD NOT UNDERSTAND WILL THIS PURE WATER BAGS (OF 20 LAKHS LITRES) CAN STAY AFLOAT AND CAN THEY BE EASILY TOWED TO THE SHORE BY BOAT. MIND BOGGLING. LOGICALLY IT IS NOT GOING INTO MY BRAIN – RESEARCHERS MAY BE CORRECT