Your English writing platform
Discover LudwigSuggestions(5)
Exact(7)
Operating a Proton Exchange Membrane fuel cell (PEMFC) system to maintain the stack temperature stable is one of the key issues in PEMFC's normal electrochemical reaction process.
Hydrogen is produced from ammonia decomposition, while butane is catalytically oxidized to produce heat and maintain the stack at a sufficiently high temperature.
In this study, we propose an innovative passive thermal management strategy to alleviate stack from freeze thaw cycles by utilizing phase change materials (PCM) and insulator to maintain the stack temperature above its freezing point.
Besides, it is demonstrated that, for the configuration considered in the study, a passive cooling system without any additional fan system can be used to maintain the stack temperature in 160 °C.
Basically, the amounts of methanol to be supplied to the re-circulating feed stream are determined by estimating the methanol consumption rates under given operating conditions, which are then adjusted by a proportional integral controller and supplied into the feed stream to maintain the stack temperature at a set value.
The objective of this control, far from being simply to maintain the stack free from oxygen and hydrogen shortages, is to achieve the necessary values of these gases, minimizing compressor consumption, which is the cause of the greatest inefficiency of fuel cells.
Similar(53)
Estimates suggest it would cost $14 million to maintain the stacks for 50 years, though that figure is based solely on the blueprint of the stacks, said Roberto Puga, the trustee managing the remediation.
The results show that a time-varying PI controller is adequate for maintaining the stack temperature within 5 K of the target point.
The optimization problem is formulated so that the specific energy density of the fuels (ammonia and butane) is maximized, while meeting a specified power demand, maintaining the stack at its thermal equilibrium, and satisfying tight constraints in regard to the emission of both ammonia and nitric oxide gases.
In the postcleavage structure, A20 maintains the stacking interaction with Y87 but has moved slightly back toward the normal mRNA path.
Heat generation within the fuel cell changes according to the power delivered from the stack, requiring a dynamic control system to remove this excess heat and maintain the desired stack temperature.
More suggestions(15)
Write better and faster with AI suggestions while staying true to your unique style.
Since I tried Ludwig back in 2017, I have been constantly using it in both editing and translation. Ever since, I suggest it to my translators at ProSciEditing.

Justyna Jupowicz-Kozak
CEO of Professional Science Editing for Scientists @ prosciediting.com