Ocean Thermal Energy Conversion (OTEC) produces electricity using the temperature difference between warm surface and cold deep-sea water. OTEC systems in literature only limitedly consider seasonal seawater variations thus might not be adequately sized for off-design conditions. This potentially leads to techno-economically sub-optimal design choices. paper sheds light on which approach yields...

Increasing efficiency and decreasing cost are the main purposes in the design of the power generation systems. In this study two hybrid systems: solid oxide fuel cell (SOFC)-gas turbine (GT) and SOFC-GT-steam turbine (ST); are considered. Increasing the SOFC input temperature causes thermodynamics improvement in the hybrid system operation. For this purpose, using two set of SOFC reactants heat...

This study examined the feasibility of green hydrogen as a transport fuel for very heavy vehicle (VHV) fleet in New Zealand. Green is assumed to be produced through water electrolysis using purely renewable energy (RE) an electricity source. chose vehicles potential market hydrogen, because it considered “low-hanging fruit” sector where battery electrification less feasible. The large-scale, de...

The ambitious energy target to achieve climate-neutrality in the European Union (EU) system raises feasibility question of using only renewables across all sectors. As one EU's leading industrialized countries, Germany has adopted several climate-action plans for realistic implementation and maximum utilization renewable energies its system. literature review shows a clear gap comprehensive tec...

Offshore wind power projects are increasingly attractive in many regions even though capacity is impacted by intermittency as it with other renewable sources. We examine balancing the an Compressed Air Energy Storage (OCAES) system that combines near-isothermal compression and expansion processes via water spray injection air storage saline aquifers. Spray maintains at nearly constant temperatu...

This article proposes a two-layer collaborative stochastic optimization model of hybrid combined heat and power system to determine the optimal capacities operational strategies components for minimizing total cost, which includes investment, operation, CO 2 emission costs. Hybrid algorithms, in genetic algorithm particle swarm optimization, are employed solve respectively. Typical scenarios wi...

A non-deterministic uncertainty and global sensitivity analysis, based on the Sobol’s method, is developed for a parabolic-trough direct steam generation plant for process heat applications. The objective of this work is to evaluate the robustness of the simulation-based design stage, identifying major modelling sources of uncertainty, as well as quantifying and ranking the relevance of its con...