Results 31 to 40 of about 164,686 (263)

Performance evaluation and economic analysis of integrated solid oxide electrolyzer cell and proton exchange membrane fuel cell for power generation

open access: yesHeliyon
In order to generate clean electricity from thermal energy, a hybrid electrochemical system is conceptually developed by coupling the proton exchange membrane fuel cell (PEMFC) and solid oxide electrolyzer cell (SOEC).
Armin Abdollahipour, Hoseyn Sayyaadi
doaj   +1 more source

Two Optimization Problems in Thermal Insulation [PDF]

open access: yesNotices of the American Mathematical Society, 2017
We consider two optimization problems in thermal insulation: in both cases the goal is to find a thin layer around the boundary of the thermal body which gives the best insulation. The total mass of the insulating material is prescribed.. The first problem deals with the case in which a given heat source is present, while in the second one there are no
BUCUR, DORIN   +2 more
openaire   +3 more sources

Steady and transient modeling of dye-sensitive solar cells: The impact of electrode thickness and dye specifications

open access: yesEnergy Conversion and Management: X
Investigating the impact of dye compounds on cell performance is crucial for advancing dye-sensitized solar cells (DSSCs). This research focuses on the sensitivity analysis of the effect of critical parameters to enhance DSSC efficiency using a thermo ...
Mona Rahmatian, Hoseyn Sayyaadi
doaj   +1 more source

Multi-objective optimization of endoreversible magnetohydrodynamic cycle

open access: yesEnergy Reports, 2022
According to the magnetohydrodynamic cycle model established in the previous literature, this article applies finite time thermodynamic theory and NSGA-II algorithm to conduct multi-objective optimization by taking heat exchanger thermal conductance ...
Qingkun Wu   +3 more
doaj   +1 more source

Optimal off-grid electricity supply for a residential complex using water-energy-economic-environmental nexus

open access: yesEnergy Conversion and Management: X
This study evaluates the performance of off-grid hybrid renewable energy systems for a residential building in Tehran, analyzing nine scenarios that combine photovoltaic (PV) panels, vanadium redox flow (VRF), lithium iron phosphate (LFP), and nickel ...
Mozhgan Jafari, Hoseyn Sayyaadi
doaj   +1 more source

Calpain small subunit homodimerization is robust and calcium‐independent

open access: yesFEBS Letters, EarlyView.
Calpains dimerize via penta‐EF‐hand (PEF) domains. Using single‐molecule force spectroscopy, we measured the strength and kinetics of PEF–PEF homodimer binding. The interaction is robust, shows a transient conformational step before dissociation, and remains largely insensitive to Ca2+.
Nesha May O. Andoy   +4 more
wiley   +1 more source

Optimal thermal refrigerator

open access: yes, 2009
4 pages, 2 ...
Allahverdyan, Armen E.   +2 more
openaire   +2 more sources

Reconstructing enzyme evolution by protein engineering

open access: yesFEBS Letters, EarlyView.
Natural enzyme evolution can be retraced by protein engineering methods such as directed evolution, rational design, and ancestral sequence reconstruction. These approaches reveal how enzymes emerged from ligand‐binding scaffolds, developed varying substrate preferences, formed oligomeric complexes, adapted to environmental changes, and evolved novel ...
Lukas Drexler   +2 more
wiley   +1 more source

Numerical Simulation and Optimized Field-Driven Design of Triple Periodic Minimal Surface Structure Liquid-Cooling Radiator

open access: yesEnergies
This work investigates the design of liquid-cooled heat sinks for IGBT modules via optimizing the Triple Periodic Minimal Surface (TPMS) structure. The performance of heat sinks with different porosity TPMS structures was compared through the finite ...
Zhuopei Lv   +5 more
doaj   +1 more source

Stiffness maximization for thermal deformation under thermal conductivity constraint using topology optimization

open access: yesNihon Kikai Gakkai ronbunshu, 2015
Cooling structures require sufficient thermal conductivity. However, structure with thermal conducting could suffer high temperature, and thermal deformation could become serious. Thus, designing structures suppressing thermal deformation is an important
Takafumi NISHIZU   +2 more
doaj   +1 more source

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