Xenesys s Development on OTEC

Transcription

1 Xenesys s Development on OTEC Xenesys Inc. Established in Xenesys has been developing OTEC technology since Our Imari factory for heat exchanger and OTEC R&D center were opened in Process Engineering for OTEC Optimization about Process Flow, Heat & Material Balance, Specs of Main Equipment of OTEC Basic Design of Power and Seawater Desalination Plant using Waste Heat Energy from Industry Photo: Imari Factory for HEX R&D and Manufacturing of Heat Exchanger for OTEC Improvement of Performance (High U- Value, Low Pressure Drop, Durability against High pressure, etc) Manufacturing Technology QA, QC (ASME, Japanese Regulation) 1

2 Why Process Engineering and HEX? Characteristics of Basic Design Process of OTEC Importance of Interaction with Heat Exchanger (HEX) s Design and Characteristics HEX Design Procedure for Common Industrial Facilities Process design conditions required for HEX (heat duty, in/out temperatures, allowable pressure drop) are determined in advance. Then, HEX SPECs are determined in accordance with the above requirements As a result, it is impossible to make the most of the capability of the HEX under a lot of design restrictions above. However, it s ACCEPTABLE because the proportion of cost for HEX is SMALL in the whole facility. HEX Design Procedure for OTEC Process (Thermo-cycle) parameters have relatively high flexibility, i.e., ammonia evaporation/condensation temperatures, delta-t of warm/cold seawater etc. are changeable, which is closely related with HEX performance. OPTIMIZATION OF THERMO-CYCLE Parameters making the most of the performance of the HEX Proportion of cost for HEX is LARGE Furthermore, HEX design affects the floating structure cost and power consumption of seawater pumps 2

3 Roadmap Roadmap for whole OTEC plant [*1] MW class 10MW class 50MW class For establishment of technical reliability From pilot to commercialization Commercial plant dissemination [*1] Reference: NEDO Renewable Energy Technology White Book, July Summarized and translated privately by Xenesys Inc. Target: 20JPY/kWh for 10MW plant at commercial phase Roadmap for Development of HEX by Xenesys Study on HEX arrangement to reduce the size of 10MW floating structure to achieve 20JPY/kWh Research and preparation on manufacturing facility (including automation) for 10MW Re-study and optimization on plate size and pattern for PHE for 100MW Target: 10JPY/kWh for 100MW plant at commercial phase 3

4 Roadmap Xenesys HEX for OTEC Design (plate size, pattern, etc.) Titanium Plate HEX (All welded type) 1MW ~10MW ~100MW Current design is adoptable (multiple HEX units) Current design is adoptable (more than 100 HEX units) Modification of design, such as larger plate with new pattern, is desired. Manufacturing (production facility, etc.) Others Current Xenesys production facility is capable Improvement and expansion of production facility is required for short delivery time and cost reduction. Arrangement of arrays of HEXs will be studied to reduce size (cost) of the floating structure 4

5 Current Supports by Government Project Title Commissioned by Commissioned to Overview R&D R&D on Ocean Energy Technology (OTEC) NEDO (New Energy and Industrial Technology Development Organization) Saga University Kobe Steel, Ltd. R&D of OTEC, focusing on HEX Small Demonstration Power Generation Project for Advanced Deep Seawater Utilization Okinawa Prefecture Local Government IHI Plant Construction Co. Xenesys Inc. Yokogawa Electric Co., 50kW demonstration with same size experimental unit Period FY FY2012: Construction FY2013-: Operation and Analysis Note Wave, tidal and current power generation have been developed in the same scheme Advisory: Saga Univ. [Note] As the original project title is available in Japanese language only, they are translated privately by Xenesys Inc. 5