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View article: Using Hydro-Pneumatic Energy Storage for Improving Offshore Wind-Driven Green Hydrogen Production—A Preliminary Feasibility Study in the Central Mediterranean Sea
Using Hydro-Pneumatic Energy Storage for Improving Offshore Wind-Driven Green Hydrogen Production—A Preliminary Feasibility Study in the Central Mediterranean Sea Open
This paper presents a preliminary feasibility study for integrating hydro-pneumatic energy storage (HPES) with off-grid offshore wind turbines and green hydrogen production facilities—a concept termed HydroGenEration (HGE). This study comp…
View article: Large-Eddy Simulation of Free-End Effects on Flow Around a Subsea Hydrogen Storage Accumulator
Large-Eddy Simulation of Free-End Effects on Flow Around a Subsea Hydrogen Storage Accumulator Open
View article: An Experimental Investigation of the Buoyancy Loading Rate Effects on the Pullout Resistance of Composite Suction Caissons in Subsea Hydrogen Storage
An Experimental Investigation of the Buoyancy Loading Rate Effects on the Pullout Resistance of Composite Suction Caissons in Subsea Hydrogen Storage Open
View article: Offshore Energy and Storage 2023 Malta ‐ Sea Opportunity
Offshore Energy and Storage 2023 Malta ‐ Sea Opportunity Open
View article: Subsea Long-Duration Energy Storage for Integration with Offshore Wind Farms
Subsea Long-Duration Energy Storage for Integration with Offshore Wind Farms Open
Long-duration energy storage systems are becoming a vital means for decarbonizing the global economy. However, with floating wind farms being commissioned farther offshore, the need to co-locate energy storage with the energy harnessing un…
View article: Numerical Analysis of Pullout Capacity of Composite Suction Caisson Foundation Used For Large Scale Underwater Compressed Gas Energy Storage
Numerical Analysis of Pullout Capacity of Composite Suction Caisson Foundation Used For Large Scale Underwater Compressed Gas Energy Storage Open
The suction caisson foundation, characterized by its unique installation methodology and excellent bearing capabilities, has emerged as a crucial supporting structure for marine constructions. However, the distinctive alternating cyclic hi…
View article: Simulation of a decentralized floating offshore wind hydrogen production system with hydro-pneumatic energy storage and subsea isobaric hydrogen storage
Simulation of a decentralized floating offshore wind hydrogen production system with hydro-pneumatic energy storage and subsea isobaric hydrogen storage Open
Hydrogen production using offshore wind power is a promising solution for producing clean fuels in remote areas. However, the intermittency of offshore wind power poses significant challenges to Proton exchange membrane (PEM) water electro…
View article: Investigating the thermal performance of a subsea liquid piston air compressor pipeline operating at very high pressure ratios
Investigating the thermal performance of a subsea liquid piston air compressor pipeline operating at very high pressure ratios Open
Liquid piston air compression is presently gaining significant interest as a means for long duration energy storage at large scale. However, various aspects attributed to the thermal performance of liquid piston air compressors at high ope…
View article: Comparing the Pressure Containment Requirements of Three Subsea Hydro-Pneumatic Energy Storage Concepts
Comparing the Pressure Containment Requirements of Three Subsea Hydro-Pneumatic Energy Storage Concepts Open
Hydro-pneumatic energy storage has significant potential for being deployed subsea and co-located with offshore wind farms. The pressure containment storing the compressed air is the bulkiest and most expensive component of such a storage …
View article: Modelling the hydraulic performance of an array of centrifugal pumps operating under a variable pressure in a hydro-pneumatic energy storage system
Modelling the hydraulic performance of an array of centrifugal pumps operating under a variable pressure in a hydro-pneumatic energy storage system Open
The large pressure variation in hydro-pneumatic energy storage systems presents a major challenge for maintaining a high operating efficiency of the turbomachinery used in the hydro-electric energy conversion processes. This paper applies …
View article: Using Carbon Dioxide for Subsea Long-Duration Energy Storage
Using Carbon Dioxide for Subsea Long-Duration Energy Storage Open
This paper investigates the operating benefits and limitations of utilizing carbon dioxide in hydro-pneumatic energy storage systems, a form of compressed gas energy storage technology, when the systems are deployed offshore. Allowing the …
View article: Numerical Simulation Method of Hydraulic Power Take-Off of Point-Absorbing Wave Energy Device Based on Simulink
Numerical Simulation Method of Hydraulic Power Take-Off of Point-Absorbing Wave Energy Device Based on Simulink Open
Wave energy has a high energy density and strong predictability, presenting encouraging prospects for development. So far, there are dozens of different wave energy devices (WECs), but the mechanism that ultimately converts wave energy int…
View article: Techno-Feasibility Assessment of a Floating Breakwater Concept for Supporting Marine Renewables in Deep Waters
Techno-Feasibility Assessment of a Floating Breakwater Concept for Supporting Marine Renewables in Deep Waters Open
The previous research has proven that one of the fundamental requirements for ensuring increased profitability and economic competitiveness in offshore-based projects is co-locating different technologies within the same marine space. This…
View article: Techno-Feasibility Assessment of a Floating Breakwater Concept for Supporting Marine Renewables in Deep Waters
Techno-Feasibility Assessment of a Floating Breakwater Concept for Supporting Marine Renewables in Deep Waters Open
Previous research has proven that one of the fundamental requirements for ensuring increased profitability and economic competitiveness of offshore-based projects is co-locating different technologies within the same marine space. This pap…
View article: Measurements and Modelling of the Discharge Cycle of a Grid-Connected Hydro-Pneumatic Energy Storage System
Measurements and Modelling of the Discharge Cycle of a Grid-Connected Hydro-Pneumatic Energy Storage System Open
Hydro-pneumatic energy storage is a form of compressed-air energy storage that can provide the long-duration storage required for integrating intermittent renewable energies into electrical power grids. This paper presents results based on…
View article: Structural Strength and Fatigue Analyses of Large-Scale Underwater Compressed Hydrogen Energy Storage Accumulator
Structural Strength and Fatigue Analyses of Large-Scale Underwater Compressed Hydrogen Energy Storage Accumulator Open
View article: Analysis of the Wave Attenuating and Dynamic Behaviour of a Floating Breakwater Integrating a Hydro-Pneumatic Energy Storage System
Analysis of the Wave Attenuating and Dynamic Behaviour of a Floating Breakwater Integrating a Hydro-Pneumatic Energy Storage System Open
Floating breakwaters have recently been generating increasing interest as a vital means to provide shelter and protect the ever-increasing number of structures deployed at sea. Notwithstanding the novel ideas being put forward, to date, fl…
View article: Numerical modelling of a hydro-pneumatic energy storage system for smoothing power fluctuations from offshore wind
Numerical modelling of a hydro-pneumatic energy storage system for smoothing power fluctuations from offshore wind Open
Energy storage systems are imperative in tackling the regulation of electricity supply and demand mismatch to avoid curtailment of wind energy. Co-locating energy storage in the same operating region as the offshore wind farms allows for a…
View article: A Numerical Model Comparison of the Energy Conversion Process for an Offshore Hydro-Pneumatic Energy Storage System
A Numerical Model Comparison of the Energy Conversion Process for an Offshore Hydro-Pneumatic Energy Storage System Open
Energy storage is essential if net zero emissions are to be achieved. In fact, energy storage is a leading solution for reducing curtailment in an energy system that relies heavily on intermittent renewables. This paper presents a comparis…
View article: Wind-Assisted Ship Propulsion of a Series 60 Ship Using a Static Kite Sail
Wind-Assisted Ship Propulsion of a Series 60 Ship Using a Static Kite Sail Open
Following the International Maritime Organization’s goal to reduce greenhouse gas emissions, the interest in the application of wind-assisted ship propulsion (WASP) in maritime transportation is on the rise. Although a variety of WASP syst…
View article: Structural Strength and Fatigue Analyses of Large-Scale Underwater Compressed Gas Energy Storage Accumulator
Structural Strength and Fatigue Analyses of Large-Scale Underwater Compressed Gas Energy Storage Accumulator Open
View article: Validation of wind measurements from a multirotor RPAS-mounted ultrasonic wind sensor using a ground-based LiDAR system
Validation of wind measurements from a multirotor RPAS-mounted ultrasonic wind sensor using a ground-based LiDAR system Open
The aim of this research was to establish the validity of wind measurements from on board a multirotor Remotely Piloted Aircraft System (RPAS) for the purposes of wind monitoring applications. A custom-built hexacopter RPAS recorded wind s…
View article: Preliminary Analysis on the Hydrostatic Stability of a Self-Aligning Floating Offshore Wind Turbine
Preliminary Analysis on the Hydrostatic Stability of a Self-Aligning Floating Offshore Wind Turbine Open
There exist vast areas of offshore wind resources with water depths greater than 100 m that require floating structures. This paper provides a detailed analysis on the hydrostatic stability characteristics of a novel floating wind turbine …
View article: A Review of Ship-to-Ship Interactions in Calm Waters
A Review of Ship-to-Ship Interactions in Calm Waters Open
The hydrodynamic interaction between two or more ships in harbours or inland waterways is a classical maritime engineering research area. In ship manoeuvring practice, ship masters try to determine the speed and gap limit when a ship is pa…
View article: Numerical Modeling of the Thermal Behavior of Subsea Hydro-Pneumatic Energy Storage Accumulators Using Air and CO2
Numerical Modeling of the Thermal Behavior of Subsea Hydro-Pneumatic Energy Storage Accumulators Using Air and CO2 Open
This paper numerically models the thermal performance of offshore hydro-pneumatic energy storage (HPES) systems composed of a subsea accumulator pre-charged with a compressed gas. A time-marching numerical approach combining the first law …
View article: CFD analysis of the effect of heterogeneous hull roughness on ship resistance
CFD analysis of the effect of heterogeneous hull roughness on ship resistance Open
Hull roughness significantly increases ship resistance, power, and fuel consumption. Although it is typically spatially heterogeneous, little research has dealt with heterogeneously distributed roughness on ship hulls. Therefore, this stud…
View article: Investigating the Increase in Energy Storage Density of Subsea Hydro-Pneumatic Accumulators Using a Compressible Fluid Undergoing Phase Change
Investigating the Increase in Energy Storage Density of Subsea Hydro-Pneumatic Accumulators Using a Compressible Fluid Undergoing Phase Change Open
The integration of energy storage systems (ESS) on a large-scale is becoming essential to mitigate intermittency issues in power supply from offshore wind farms. This paper deals with an offshore Hydro-Pneumatic Energy Storage (HPES) syste…
View article: A Numerical Analysis of Dynamic Slosh Dampening Utilising Perforated Partitions in Partially-Filled Rectangular Tanks
A Numerical Analysis of Dynamic Slosh Dampening Utilising Perforated Partitions in Partially-Filled Rectangular Tanks Open
Conventional liquefied natural gas (LNG) cargo vessels are imposed with tank-fill limitations as precautions to prevent structural damage and stability-loss due to high-impact sloshing, enforcing cargo volume-fills to be lower than 10% or …
View article: Offshore Wind-to-Hydrogen Production Plant Integrated with an Innovative Hydro-Pneumatic Energy Storage Device
Offshore Wind-to-Hydrogen Production Plant Integrated with an Innovative Hydro-Pneumatic Energy Storage Device Open
One of the main technical challenges of wind-to-hydrogen production plants is to couple intermittent and variable renewable power sources, such as wind turbines, with an electrolyser. Most hydrogen production concepts rely on electrical st…
View article: Nonlinear URANS model for evaluating course keeping and turning capabilities of a vessel with propulsion system failure in waves
Nonlinear URANS model for evaluating course keeping and turning capabilities of a vessel with propulsion system failure in waves Open