This part of IEC 62600 establishes general principles for design assessment of OTEC plants. The goal is to describe the design and assessment requirements of OTEC plants used for stable power generation under various conditions. This electricity may be used for utility supply or production of other energy carriers. The intended audience is developers, engineers, bankers, venture capitalists, entrepreneurs, finance authorities and regulators.<\/p>\n
This document is applicable to land-based (i.e. onshore), shelf-mounted (i.e. nearshore seabed mounted) and floating OTEC systems. For land-based systems the scope of this document ends at the main power export cable suitable for connection to the grid. For shelf-mounted and floating systems, the scope of this document normally ends at the main power export cable where it connects to the electrical grid.<\/p>\n
This document is general and focuses on the OTEC specific or unique components of the power plant, particularly the marine aspects of the warm and cold water intake systems. Other established standards are referenced to address common components between the OTEC system and other types of power plants and floating, deep water oil and gas production vessels, such as FPSOs and FLNG systems. Relevant standards are listed within this document as appropriate.<\/p>\n
The flow diagram, shown in Figure 5, illustrates the main design process associated with floating, shelf-mounted or land-based OTEC systems.<\/p>\n
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| 2<\/td>\n | undefined <\/td>\n<\/tr>\n | ||||||
| 4<\/td>\n | CONTENTS <\/td>\n<\/tr>\n | ||||||
| 7<\/td>\n | FOREWORD <\/td>\n<\/tr>\n | ||||||
| 9<\/td>\n | INTRODUCTION Figures Figure 1 \u2013 Tropical ocean temperature-depth profile <\/td>\n<\/tr>\n | ||||||
| 10<\/td>\n | Figure 2 \u2013 Working principle of closed cycle ocean thermal energy conversion [2] <\/td>\n<\/tr>\n | ||||||
| 11<\/td>\n | Figure 3 \u2013 Major power cycle components of a closed cycle OTEC plant <\/td>\n<\/tr>\n | ||||||
| 12<\/td>\n | Figure 4 \u2013 Open cycle OTEC system <\/td>\n<\/tr>\n | ||||||
| 13<\/td>\n | 1 Scope <\/td>\n<\/tr>\n | ||||||
| 14<\/td>\n | 2 Normative references Figure 5 \u2013 Example of a typical process for developing and testing an OTEC system (land-based and floating)\u2003 <\/td>\n<\/tr>\n | ||||||
| 15<\/td>\n | 3 Terms and definitions <\/td>\n<\/tr>\n | ||||||
| 16<\/td>\n | Figure 6 \u2013 Seawater differential temperature with 95 % confidence intervals Figure 7 \u2013 Example of OTEC power definitions <\/td>\n<\/tr>\n | ||||||
| 17<\/td>\n | 4 Abbreviated terms and acronyms 5 Site specific and metocean design parameters 5.1 Environmental factors influencing design 5.1.1 General <\/td>\n<\/tr>\n | ||||||
| 18<\/td>\n | 5.1.2 Seawater temperature 5.1.3 Wind 5.1.4 Waves <\/td>\n<\/tr>\n | ||||||
| 19<\/td>\n | 5.1.5 Water depth and sea level variations 5.1.6 Currents 5.1.7 Marine growth 5.1.8 Other meteorological and oceanographic information 5.1.9 Water chemistry 5.1.10 Third party (collision, anchor impact, trawling, Unexploded Ordinance (UXO) <\/td>\n<\/tr>\n | ||||||
| 20<\/td>\n | 5.1.11 Soil\/seabed conditions 5.2 Biological impact 6 Floating OTEC \u2013 General information and guidance (closed cycle, deep water) 6.1 Seawater considerations <\/td>\n<\/tr>\n | ||||||
| 21<\/td>\n | 6.2 Cold seawater system 6.2.1 Systems engineering considerations Figure 8 \u2013 Seawater flow considerations for floating OTEC Tables Table 1 \u2013 Indicative design consideration in selecting Cold Water Pipe parameters <\/td>\n<\/tr>\n | ||||||
| 22<\/td>\n | 6.2.2 Cold water pumping power considerations 6.2.3 CWP dynamic response <\/td>\n<\/tr>\n | ||||||
| 23<\/td>\n | 6.2.4 Static Loads and bending moments 6.2.5 Suction collapse 6.2.6 Deflection by current and platform motions <\/td>\n<\/tr>\n | ||||||
| 24<\/td>\n | 6.2.7 Analysis of loads and displacements 6.2.8 Recommendations for qualification of the Cold Water Pipe (CWP) 6.2.9 Analysis approach 6.3 Warm seawater system 6.3.1 Warm water intake (screen) <\/td>\n<\/tr>\n | ||||||
| 25<\/td>\n | 6.3.2 Warm water ducting and pumps 6.3.3 Biofouling control 6.4 Seawater discharge arrangement and plume analysis 6.4.1 Seawater discharge ducts 6.4.2 Seawater pumps <\/td>\n<\/tr>\n | ||||||
| 26<\/td>\n | 7 Process system 7.1 Working fluid selection Figure 9 \u2013 Major components of a closed cycle OTEC plant working fluid process system <\/td>\n<\/tr>\n | ||||||
| 27<\/td>\n | 7.2 Heat exchanger (HX) selection 7.3 Materials compatibility 7.4 Process system risks and hazards 8 Platform type 8.1 General <\/td>\n<\/tr>\n | ||||||
| 28<\/td>\n | 8.2 Mooring\/Station keeping 8.2.1 Grazing OTEC plants (no power export cable required) 8.2.2 Non-grazing OTEC plants Figure 10 \u2013 ISO 19900 offshore standards relevant to OTEC platform design <\/td>\n<\/tr>\n | ||||||
| 29<\/td>\n | 9 Power export 9.1 General 9.2 Design considerations 9.3 Platform based equipment 9.4 Transmission cable <\/td>\n<\/tr>\n | ||||||
| 30<\/td>\n | 9.5 Land based equipment 10 Energy storage and transfer system 10.1 General 10.2 Hydrogen 10.3 Ammonia 10.4 Methanol 10.5 Battery storage <\/td>\n<\/tr>\n | ||||||
| 31<\/td>\n | 11 Land and shelf-based OTEC 11.1 General information and guidance 11.2 CWP design for land and shelf-based OTEC plants <\/td>\n<\/tr>\n | ||||||
| 32<\/td>\n | 12 Risk based approach for the design and operations of OTEC plants 12.1 Risk assessment 12.2 Risk based design 12.2.1 Risk assessment process Figure 11 \u2013 Simple risk evaluation matrix <\/td>\n<\/tr>\n | ||||||
| 33<\/td>\n | 12.3.1 Floating plant 12.3.2 Operating plant 12.3.3 Product export risks\/hazards 12.3 Risk based operational guidelines 12.3.1 Floating plant 12.3.2 Operating plant 12.3.3 Product export risks\/hazards <\/td>\n<\/tr>\n | ||||||
| 34<\/td>\n | 13 Transportation and installation (T&I) 14 Commissioning and handover <\/td>\n<\/tr>\n | ||||||
| 35<\/td>\n | 15 Operations, inspection and maintenance 15.1 General 15.2 Operations <\/td>\n<\/tr>\n | ||||||
| 36<\/td>\n | 15.3 Inspection and maintenance <\/td>\n<\/tr>\n | ||||||
| 37<\/td>\n | 15.4 Hazards and safety 15.4.1 Hazards 15.4.2 Safety <\/td>\n<\/tr>\n | ||||||
| 38<\/td>\n | 16 Decommissioning <\/td>\n<\/tr>\n | ||||||
| 40<\/td>\n | Annex A (informative)OTEC potential and its history A.1 OTEC potential <\/td>\n<\/tr>\n | ||||||
| 41<\/td>\n | A.2 Installation sites A.3 Previous OTEC projects Table A.1 \u2013 Notable OTEC systems \u2013 Past and present <\/td>\n<\/tr>\n | ||||||
| 42<\/td>\n | A.4 Open cycle OTEC <\/td>\n<\/tr>\n | ||||||
| 43<\/td>\n | Bibliography <\/td>\n<\/tr>\n<\/table>\n","protected":false},"excerpt":{"rendered":" Marine energy. Wave, tidal, and other water current converters – Design and analysis of an Ocean Thermal Energy Conversion (OTEC) plant. General guidance<\/b><\/p>\n |