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 turbine is the kind that can be used for hydroelectricity, only the electric generator is with a pump.  The turbine and pump can operate in deep seawater without any sophisticated measures, hence the attraction.

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

30 cm diameter hoses are large enough to save millions of pounds in air conditioning expenses in just a few years!  The advantages of hoses were obvious; hoses are flexible and can be coiled.  They are easy to transport.  They are just as easy to recover as they are to install; now here, is a major difference.  A simple maintenance job on deep-water pipes the size of the image just below has cost $millions.

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.  Over the duration of the field test we found all kinds 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.

Why two hoses? 

 One 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, high flow, propeller pumps can be used.  This kind of pump is also available off the shelf and is far simpler, lighter and cheaper than other types of larger scale pump, really, many hundreds of kilograms per 1000 litres lighter if not tonnes!  These pumps can provide water on scales of up to several cubic meters per second, and that is enough for Megawatts (MW) of OTEC.

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.

A second good reason to have two hoses is centred around the problem of thermal waste and nutrient rich water waste.  Using wastewater as a driving fluid means that the cold and warm water can be released in areas where there would be no observable temperature change and there would be no plankton bloom at all; this is ideal for genuinely sensitive areas.  Alternatively, you can release the water so that it can have a desirable effect such as to cause a boost in plankton growth because the water is full of nutrients.  In either case there is no wastewater pipe in the traditional sense and that means a lower cost.  NEW-OTEC can be free from a hidden environmental ugliness that haunts traditional OTEC.

Indeed, on larger scales release of deep-sea-cold-water near the surface could be a serious mistake that could bring about dramatic changes in the global environment.  Many Gigawatts of surface cooling would occur even on relatively modest scales, let alone scales where a significant proportion of the World’s energy were coming from OTEC.  It would be inconceivable to have a second 1-3 Km long traditional OTEC pipe to put the water back down to a region where it couldn’t do any more cooling, whereas with hoses this is not a problem.   We can put the vast majority of the wastewater that is still very cold back into the deep, cold parts of the Ocean, where the remaining coldness that the water still had would be unaffected.

If you would like to use the turbo-pump for your own ends or would like to use the idea, please contact us as the use of the Turbo-pump may be available under licence.  Our Granted patent numbers are in the Footer.

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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