Performance evaluation of hydrogen generation system with electroless-deposited Co–P/Ni foam catalyst for NaBH4 hydrolysis

The purpose of this paper is to design a fuzzy control system for generating hydrogen at a desired level by a reaction between water and activated aluminum particles. The activated aluminum particles are produced shredded aluminum sawdust. It is difficult to characterize the reaction quantitatively because the characteristics of hydrogen generating reaction vary as depending on the samples, the environment of the reaction and so on. The experimental system consists of a fuel cell (FC) of 100[W], a water tank, a reaction vessel, pressure sensors, a water pump, a radiator and a one-chip microcomputer. The fuzzy control system is designed to determine the quantum of water which is supplied to the activated aluminum particles. The error forms a desired value of the pressure of the reaction vessel and the change of the error are chosen as the labels of the fuzzy membership functions. The proposed fuzzy control system is applied to maintain the pressure of the reaction vessel of the developed hydrogen generation system at a certain level. The developed hydrogen generation system is confirmed to provide hydrogen to the FC by experiments under various conditions.

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Feasibility of high efficient solar hydrogen generation system integrating photovoltaic cell/photon-enhanced thermionic emission and high-temperature electrolysis cell

Energy Conversion and Management ◽

10.1016/j.enconman.2020.112699 ◽

2020 ◽

Vol 210 ◽

pp. 112699 ◽

Cited By ~ 6

Author(s):

Hongsheng Wang ◽

Hui Kong ◽

Zhigang Pu ◽

Yao Li ◽

Xuejiao Hu

Keyword(s):

High Temperature ◽

Hydrogen Generation ◽

Thermionic Emission ◽

Photovoltaic Cell ◽

Electrolysis Cell ◽

Generation System ◽

Solar Hydrogen ◽

High Efficient ◽

High Temperature Electrolysis

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A Novel Chemical-Looping Hydrogen Generation System With Multi-Input Fossil Fuels

Volume 2: Aircraft Engine; Coal, Biomass and Alternative Fuels; Cycle Innovations ◽

10.1115/gt2013-94655 ◽

2013 ◽

Author(s):

Xiaosong Zhang ◽

Hongguang Jin

Keyword(s):

Hydrogen Production ◽

Natural Gas ◽

Fossil Fuels ◽

Hydrogen Generation ◽

Chemical Looping ◽

Generation System ◽

System A ◽

Energy Penalty ◽

Burning Coal ◽

Chemical Looping Hydrogen Generation

This paper proposes a multi-input chemical looping hydrogen generation system (MCLH), which generates hydrogen, through the use of natural gas and coal. In this system, a new type of oven, burning coal instead of natural gas as heating resource for hydrogen production reaction, is adopted. Coal can be converted to hydrogen indirectly without gasification. Benefits from the chemical looping process, the CO2 can be captured without energy penalty. With the same inputs of fuel, the new system can product about 16% more hydrogen than that of individual systems. As a result, the energy consumption of the hydrogen production is about 165J/mol-H2. Based on the exergy analyses, it is disclosed that the integration of synthetic utilization of natural gas and coal plays a significant role in reducing the exergy destruction of the MCLH system. The promising results obtained may lead to a clean coal technology that will utilize natural gas and coal more efficiently and economically.

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