PDF Publication Title:
Text from PDF Page: 076
The closed cycle OTEC power plant concept was first proposed by D‘Arsonval in 1881. It uses a working fluid with a low-boiling point, such as ammonia, propane or R134a and operates on a Rankine cycle. The working medium is heated and vaporized in the evaporator by the warm surface seawater. The steam produced drives a turbine coupled to a generator. After the expansion process, the low-pressure working fluid vapor is condensed during a heat exchange with the cold seawater from the deep ocean. The working fluid is then pumped back to the evaporator and the cycle is repeated continuously. Figure 3.17 shows a schematic of a closed OTEC cycle. B| Open OTEC cycle The open cycle OTEC, proposed in 1928 by George Claude uses seawater as the working fluid. Warm seawater from near the surface of the sea is pumped into a low pressure evaporator chamber where it boils at ambient temperature. The evaporator is maintained through a series of valves and careful maintenance to avoid atmospheric leakages. The vapor then drives a low pressure turbine to produce electricity. The low pressure vapor is then cooled using deep seawater. This configuration presents the advantage of producing fresh water as the warm seawater flash evaporated becomes desalinated and ready for the consumption. C| Hybrid OTEC cycle A hybrid OTEC is made of two stages or loops. The first loop is a closed OTEC cycle generating electricity using a low-boiling point working fluid. In a second loop, warm seawater is flashed into steam as in the open OTEC using a vacuum chamber that serves also as evaporator for the closed OTEC. A schematic of a hybrid OTEC is shown in Figure 3.18 (Takahashi and Trenka, 1992). This cycle configuration has yet to be tested. Evacuated evaporation chamber Solar energy (1) (5) (2) P Pump (6) (7) Figure 3.18 – Schematic of a hybrid OTEC system (Takahashi and Trenka, 1992) G Steam Warm seawater (29 oC) (4) (3) Cold ocean deep seawater (5 oC) Concentrated seawater Desalinated water Condenser Turbogener ator Concentrated seawater Page | 75PDF Image | Low-Grade Heat Conversion into Power Using Small Scale Organic Rankine Cycles
PDF Search Title:
Low-Grade Heat Conversion into Power Using Small Scale Organic Rankine CyclesOriginal File Name Searched:
Tchanche_B.pdfDIY PDF Search: Google It | Yahoo | Bing
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
IT XR Project Redstone NFT Available for Sale: NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Be part of the future with this NFT. Can be bought and sold but only one design NFT exists. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Turbine IT XR Project Redstone Design: NFT for sale... NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Includes all rights to this turbine design, including license for Fluid Handling Block I and II for the turbine assembly and housing. The NFT includes the blueprints (cad/cam), revenue streams, and all future development of the IT XR Project Redstone... More Info
Infinity Turbine ROT Radial Outflow Turbine 24 Design and Worldwide Rights: NFT for sale... NFT for the ROT 24 energy turbine. Be part of the future with this NFT. This design can be bought and sold but only one design NFT exists. You may manufacture the unit, or get the revenues from its sale from Infinity Turbine. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Supercritical CO2 10 Liter Extractor Design and Worldwide Rights: The Infinity Supercritical 10L CO2 extractor is for botanical oil extraction, which is rich in terpenes and can produce shelf ready full spectrum oil. With over 5 years of development, this industry leader mature extractor machine has been sold since 2015 and is part of many profitable businesses. The process can also be used for electrowinning, e-waste recycling, and lithium battery recycling, gold mining electronic wastes, precious metals. CO2 can also be used in a reverse fuel cell with nafion to make a gas-to-liquids fuel, such as methanol, ethanol and butanol or ethylene. Supercritical CO2 has also been used for treating nafion to make it more effective catalyst. This NFT is for the purchase of worldwide rights which includes the design. More Info
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
Infinity Turbine Products: Special for this month, any plans are $10,000 for complete Cad/Cam blueprints. License is for one build. Try before you buy a production license. May pay by Bitcoin or other Crypto. Products Page... More Info
| CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com | RSS | AMP |