The turbo-pump and hose based deep sea cold water delivery system.

We wanted to find a way to make it possible to use hoses to deliver Deep-sea-cold-water.

We found the idea of the turbo-pump by chance whilst working on a similar project.  The turbo-pump is just a water turbine, joined to a pump.  Water drives the turbine, and that drives the pump so that water can be delivered.  Wastewater can be vented with the same process if the water that drives the turbine is wastewater.  The head of the system can be balanced meaning that head arising from lifting water in air can be negated.

The turbine is the kind that can be used for hydroelectricity.  The turbine and pump can operate in deep seawater without any sophisticated measures.

  We demonstrated the ease with which 30 cm diameter hoses can be installed at Sea in a Budget Field Test. 

The advantages of hoses were obvious; hoses are flexible and can be coiled.  They are easy to transport.  They are easy to install and recover.  Hoses can naturally find the most hydrodynamic position if they are allowed to.  The fact that hoses can change shape makes them perfect for delivering the water; they work particularly well underwater where the weight of the water and the hose is negated.   What with the lack of weight, hoses underwater are unlikely to puncture; and this we have found to be true from experience.  We dragged the hoses over the beach and the hoses were not damaged, the material is tough and so we found that any idea of hoses being easily punctured was a silly one.  Over the duration of the field test we found all kind of secrets that will lead to a successful installation and are looking forward to implementing them.

What next?

We are in the later stages of showing a method of converting a normal pump and turbine so that they can be a deep-sea-turbo-pump.  Once the method is complete, we can be confident that we can provide water in sufficient quantities for commercial scale Co2 sequestration, thermal cooling, mineral water production, Spa applications, Mari culture, SWAC and even LTTD desalination and the Single-OTEC-units, on and offshore.

The same principle can apply to larger pumps that can provide cubic meters of water that would be able to provide Mega Watts (MW) of power, the only change being that we may no longer be able to buy parts ‘off-the-shelf’.

However, one last great advantage to using two hoses reveals itself wonderfully as the pumps get bigger.  The wastewater can balance the head on the system on or offshore meaning that low head propeller pumps may be used and that losses from pumping can be greatly reduced.  This kind of pump is also available off the shelf and can provide water on scales of up to several cubic meters, and that is enough for Megawatts (MW) of OTEC, and the on and offshore Multi-MW Modular Systems.  Alternatively, the low head of the system may mean that very large, but lightweight, plastic or aluminum pumps can be used.

MW OTEC is worth millions in savings or earnings to business owners, investors, and government bodies and is therefore a goal that is well worth reaching.

We are on Facebook and Twitter @newotec if you would like to keep up with what we are doing.  There is a link in the footer to the Facebook page.


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