Method of Hydrogenous Fuel Usage to Increase the Efficiency in Tandem Diverse Temperature Oxidation System

Zubkova, Marina Yu.; Stroganov, A. I.; Chusov, Alexander; Molodtsov, Dmitry

doi:10.1051/matecconf/20165301019

Cited by 1 publication

(2 citation statements)

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“…Unattainable ideal limits the effectiveness for LTFC and HTFC equal to η = 83% (ideal) and η = 73.2% (ideal), respectively. To an assessment the thermodynamic efficiency of the integrated usage of the considered fuel for electric component implemented in the fuel cell and a thermal component at the corresponding utilization of the thermal flow, effective power indicators [14] for electric component ηHTFC (high-temperature fuel cell efficiency) and ηLTFC (low-temperature fuel cell efficiency) in the range 40% ÷ 60% were calculated (Table 1). Distribution of heat flow is organized in such a way that everywhere there is a positive heat balance.…”

Section: Experimental Studiesmentioning

confidence: 99%

“…Estimation of effective efficiency for various temperature tandem oxidation system (η∑ef) was carried out by two ways: based on the Gibbs energy change (∆G) for stages helpful electrical work is done in low-temperature fuel cell and high-temperature fuel cell, and based on fuel combustion heat balance (ΔQ) under making full use of the recovered heat [14].…”

Section: Ltfc η=50%mentioning

confidence: 99%

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Hydrogenous Fuel as an Energy Material for Efficient Operation of Tandem System Based on Fuel Cells

Zubkova

Stroganov²,

Chusov

et al. 2016

KEM

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This paper presents the results of relatively cheap hydrogenous fuel usage as an energy material for energy supply stand-alone environmentally friendly systems creation. Usage of fuel cells running on hydrogenous fuel is a promising direction in creation of stand-alone power supply systems in low-rise residential development. Presented thermodynamic calculations and material balance data for electric and thermal components assessment in considered ways to use convention products, performance enhancement in tandem system based on fuel cells with full heat regeneration. The total effective efficiency of the tandem installation including the fuel converter, separating system, high-temperature fuel cell, low-temperature fuel cell is higher than for each of the fuel cell elements separately. Distribution of H2 for LTFC and HTFC is determined in compliance with the conditions of the positive heat balance to compensate the heat used for the endoenergic reaction in the converter, input stream heating and heat losses. The total effective efficiency under making full use of recovered heat for considered tandem system depends on the efficiency of its constituent fuel cells. Energetically effective distribution of H2 on streams of high-temperature and low-temperature oxidation according to a position of observance of positive thermal balance on an external contour of tandem system, is reached by operation of HTFC electric efficiency in the range of 50 ÷ 55%.

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Section: Experimental Studiesmentioning

confidence: 99%

Section: Ltfc η=50%mentioning

confidence: 99%