Thermal integration of a metal hydride storage unit and a PEM fuel cell stack

Førde, T.; Eriksen, Jon Amund; Pettersen, Anita; Vie, Preben J. S.; Ulleberg, Øystein

doi:10.1016/j.ijhydene.2009.05.146

Cited by 71 publications

(21 citation statements)

References 19 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…A vertical type MHT was assembled to investigate the recovery of the reaction heat during the hydrogen absorbing/desorbing process in Advanced Industrial Science and Technology(AIST) and Takasago Thermal Engineering Ltd [1][2][3][4]. Hydrogen energy systems consisting of electrolyzers, metal hydride tanks, and fuel cells have been aggressively researched [5][6][7][8][9][10].…”

Section: Introductionmentioning

confidence: 99%

Effect of the Metal Hydride Tank Structure on the Reaction Heat Recovery for the Totalized Hydrogen Energy Utilization System

Maeda¹,

Nakano

Ito

et al. 2013

Journal of International Council on Electrical Engineering

View full text Add to dashboard Cite

A Totalized Hydrogen Energy Utilization System (THEUS) is proposed for load leveling and stabilizing the grid. The THEUS is a novel unitized regenerative fuel cell system that achieves high overall efficiency through optimized heat utilization. In this paper, a metal hydride tank (MHT) is chosen as hydrogen storage. In the MHT, the heating and cooling from adsorption/desorption processes is used to produced heated and chilled water for building ventilation systems. A new horizontal type MHT was developed to enhance the recovery rate of the reaction heat. This tank has a double coil heat exchanger and contained 50kg of AB5 metal hydride. The experimental results were compared with the results which were developed previously at AIST. The new tank results showed an improvement for the heat recovery rate which is the ratio of recovered energy to the entire reaction heat of the metal hydride. The reaction heat recovery was improved due to the decrease of the thermal capacity of the tank.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of the Metal Hydride Tank Structure on the Reaction Heat Recovery for the Totalized Hydrogen Energy Utilization System

Maeda¹,

Nakano

Ito

et al. 2013

Journal of International Council on Electrical Engineering

View full text Add to dashboard Cite

show abstract

“…On the contrary of hydrogen absorption, hydrogen desorption (discharging) is endothermic process in which chemical bonds in solid MH are broken. Dissociation of chemical bonds in MH is endothermic process therefore it absorbs the heat . Hydrogen charging and discharging rate from the MH depends on the working temperature and pressure .…”

Section: Introductionmentioning

confidence: 99%

Techno‐economic analysis of metal hydride‐based energy storage system in microgrid

2019

View full text Add to dashboard Cite

Hydrogen can be a promising option as an energy storage medium in renewable power generator‐based microgrid. However, the technologies used for the hydrogen storage such as high pressure in gaseous form and solid storages can significantly affect the cost performance of the hydrogen‐based microgrid. In this study, a techno‐economic assessment for solid hydrogen storage (metal hydride [MH])‐based microgrid in Indian operating conditions has been carried out in terms of levelized cost of electricity (LCOE), net present cost, and avoided environmental emissions. In the present microgrid, excess photovoltaic (PV) generator electricity is used to generate hydrogen using the alkaline water electrolyzer (EL). This generated hydrogen is stored in the MH cylinder. The stored hydrogen is converted back into electricity by fuel cell (FC) in case of insufficiency of PV electricity. The sizing of the microgrid components such as PV, FC, EL, and hydrogen storage tank are obtained for given load profile using HOMER optimization tool. An attempt has been made for the cost evaluation of the solid and high‐pressure gaseous storages in the microgrid. A comparative study between two energy storage mediums such as battery and hydrogen in microgrid is also performed. In case of battery and hydrogen storages, the LCOE is found to be 0.1293 and 0.383 $/kWh, respectively. It was found that battery storage system is more economical than hydrogen storage in microgrid. Nonetheless, the difference between the LCOE in hydrogen‐based microgrid is reduced considerably with optimized cost scenario of the EL, FC, and H2 storage tank as compared to the battery storage. Such technical, economic, and environmental assessment of the MH‐based microgrid system provides a firm basis to policymakers for shaping energy and environment policies for hydrogen activities.

show abstract

“…This heat can be captured and used for a range of Combined Heat and Power (CHP) applications such as hot water supply [11][12][13][14][15], space heating [16], pre-heating the PEMFC inlet air in cold climates [17,18], or thermal management of batteries in a hybrid battery fuel cell system (also in cold conditions) [19][20][21][22][23][24]. This heat can also be utilized to enhance the hydrogen release rate of Metal Hydride (MH) hydrogen storage canisters used to supply hydrogen to PEMFCs [25][26][27]. In MHs, hydrogen is stored in special metal alloys in atomic form [28].…”

Section: Introductionmentioning

confidence: 99%

Passive Fuel Cell Heat Recovery Using Heat Pipes to Enhance Metal Hydride Canisters Hydrogen Discharge Rate: An Experimental Simulation

2018

View full text Add to dashboard Cite

This paper reports on an experimental investigation of a passive thermal coupling arrangement between a Proton Exchange Membrane (PEM) fuel cell and a Metal Hydride (MH) hydrogen storage canister using heat pipes for enhancing the release rate of hydrogen. The performance of this arrangement was measured by inserting the evaporator sections of the heat pipes into an aluminum plate mimicking one out of five cooling plates of a 500-W fuel cell (that is a 100 W section of the stack). Thermal pads were attached on both sides of the plate to represent the fuel cell heat to be supplied to a 660-sl MH canister. The results showed that the operating temperature of the fuel cell can be maintained in the desired range of 60-80 • C. A complementary experimental study was also conducted on an 800-sl MH canister supplying hydrogen to a 130-W fuel cell stack (a slightly scaled-up setup compared to the first experiment). The study confirmed the findings of an earlier theoretical study by the authors that by supplying about 20% of the total cooling load of the stack to a MH canister, its maximum sustainable hydrogen supply rate increased by 70%, allowing for continuous operation of the stack at its rated power.

show abstract

Thermal integration of a metal hydride storage unit and a PEM fuel cell stack

Cited by 71 publications

References 19 publications

Effect of the Metal Hydride Tank Structure on the Reaction Heat Recovery for the Totalized Hydrogen Energy Utilization System

Effect of the Metal Hydride Tank Structure on the Reaction Heat Recovery for the Totalized Hydrogen Energy Utilization System

Techno‐economic analysis of metal hydride‐based energy storage system in microgrid

Passive Fuel Cell Heat Recovery Using Heat Pipes to Enhance Metal Hydride Canisters Hydrogen Discharge Rate: An Experimental Simulation

Contact Info

Product

Resources

About