Maximum work output from an electric battery with variable equivalent capacitance

2019 ◽  
pp. 1-9
Author(s):  
Shaojun Xia ◽  
Lingen Chen
Keyword(s):  
Work Output ◽  
Equivalent Capacitance ◽  
Maximum Work ◽  
Maximum Work Output

Exogenous carbohydrate oxidation from different carbohydrate sources during exercise

1993 ◽  
Vol 75 (5) ◽  
pp. 2168-2172 ◽  
Author(s):  
W. H. Saris ◽  
B. H. Goodpaster ◽  
A. E. Jeukendrup ◽  
F. Brouns ◽  
D. Halliday ◽  
...  
Keyword(s):  
Physical Properties ◽  
Oxidation Rate ◽  
Corn Starch ◽  
Work Output ◽  
Cycling Exercise ◽  
Oxidation Rates ◽  
Maximum Work ◽  
The Mean ◽  
13C Tracer ◽  
Maximum Work Output

The exogenous carbohydrate (CHO) oxidation of naturally enriched [13C]CHO sources with different solubilities was studied during cycling exercise (150 min, 60% maximum work output). Moreover, the effect of adding a 13C tracer with different physical properties than the tracee on exogenous CHO oxidation was investigated. Test solutions (28.5 ml/kg body wt) were water for control of 13C background, 15% soluble partially hydrolyzed corn starch (SOL), 15% insoluble corn starch (In-SOL), and 15% InSOL with [13C6]glucose as tracer. Both the mean and peak exogenous oxidation rates were significantly greater (P < 0.05) in the SOL trial than in the InSOL trial (mean oxidation rate, 0.84 +/- 0.21 and 0.50 +/- 0.15 g/min, respectively; peak oxidation rate, 1.10 +/- 0.18 and 0.81 +/- 0.25 g/min, respectively). The amount of the ingested CHO that was oxidized was significantly higher (P < 0.05) in the SOL trial (126 +/- 31 g) than in the InSOL trial (75 +/- 25 g). When we added an extrinsic tracer ([13C]glucose), the apparent mean and peak oxidation rates of the trial with InSOL and [13C6]glucose were significantly (P < 0.05) higher (0.91 +/- 0.30 and 1.23 +/- 0.41, respectively) than the InSOL values. These results 1) indicate that the addition of the soluble [13C]glucose tracer to an insoluble starch tracee leads to overestimation of the exogenous CHO oxidation rates and 2) suggest that soluble CHO is oxidized at a higher rate during exercise than isocaloric insoluble CHO.

Graphene as Cathode Material in Molten Carbon Fuel Cells

2014 ◽  
Author(s):  
Khalid Zouhri ◽  
Reza S. Yassar
Keyword(s):  
Cathode Material ◽  
High Efficiency ◽  
Combined Cycle ◽  
Molten Carbonate Fuel Cell ◽  
Carbon Cloth ◽  
Work Output ◽  
Molten Carbonate ◽  
Maximum Work ◽  
The Impact ◽  
Maximum Work Output

The molten carbonate fuel cell (MCFC) is considered one of the best technologies for stationary power. This is due to its high efficiency, medium–high operating temperature, and low emissions. The MCFC operates at a temperature range from 600oC to 700oC and normally is combined with the gas turbine (GT) as a topping cycle. This work investigates the impact of Platinum/Graphene (Pt/G) on a combined cycle of MCFC-GT by applying the first and second laws of thermodynamics. The maximum work output of the hybrid cycle is ultimately calculated to be 1350 kW. The overall exergy efficiency achieved is 59.82%. Our findings reveal that there is an average 23% gain in the maximum work output, energy and exergy efficiencies when Pt/G is used as the cathode material compared to other materials such as Platinum/Carbon (Pt/C) and Platinum/Carbon cloth (Pt/CC).

The maximum work output of an electric battery in a given time

2002 ◽  
Vol 27 (2) ◽  
pp. 189-196 ◽  
Author(s):  
Jincan Chen ◽  
Zheqiang Shi ◽  
Xuyang Chen
Keyword(s):  
Work Output ◽  
Maximum Work ◽  
Maximum Work Output

Maximum work output of an electric battery and its load matching

2002 ◽  
Vol 43 (2) ◽  
pp. 241-247 ◽  
Author(s):  
Zheqiang Shi ◽  
Jincan Chen ◽  
Chih Wu
Keyword(s):  
Work Output ◽  
Load Matching ◽  
Maximum Work ◽  
Maximum Work Output

scholarly journals Влияние режима старения в мартенситном состоянии под сжимающей нагрузкой на двусторонний эффект памяти формы в монокристаллах ферромагнитного сплава Ni-=SUB=-49-=/SUB=-Fe-=SUB=-18-=/SUB=-Ga-=SUB=-27-=/SUB=-Co-=SUB=-6-=/SUB=-

2020 ◽  
Vol 46 (12) ◽  
pp. 51
Author(s):  
А.Б. Тохметова ◽  
Н.Г. Ларченкова ◽  
Е.Ю. Панченко ◽  
Ю.И. Чумляков
Keyword(s):  
Martensitic Transformation ◽  
Shape Memory ◽  
Single Crystals ◽  
Compressive Stress ◽  
Shape Memory Effect ◽  
Memory Effect ◽  
Work Output ◽  
Thermoelastic Martensitic Transformation ◽  
Maximum Work ◽  
Maximum Work Output

The effects of stress-induced martensite aging (SIM-aging) along the [110]B2-direction on the thermoelastic martensitic transformation in Ni49Fe18Ga27Co6 single crystals were investigated. It was experimentally established that the effective regime of SIM-aging (at T = 423 K, 1 h under a compressive stress 450 MPa) results in a stabilization of stress-induced martensite and inducing the tensile two-way shape memory effect with reversible strain of +9.0 (± 0.3) % along the [001]B2-direction which is the perpendicular to the SIM-aging axis. Maximum work output of Wmax = 0.14 J/g (1125 kJ/m3) that can be realized using the two-way shape memory effect was obtained.

The Influence of Quantum Degeneracy on the Performance of a Fermi Brayton Engine

2004 ◽  
Vol 11 (01) ◽  
pp. 87-99 ◽  
Author(s):  
Bihong Lin ◽  
Jincan Chen
Keyword(s):  
Constant Pressure ◽  
Pressure Ratio ◽  
Fermi Gas ◽  
Work Output ◽  
Quantum Degeneracy ◽  
Special Cases ◽  
Output Ratio ◽  
Maximum Work ◽  
Engine Cycle ◽  
Maximum Work Output

The influence of quantum degeneracy on the performance of a Brayton engine using an ideal Fermi gas as the working substance is investigated, based on the theory of statistical mechanics. The general expressions of the efficiency and work output of the engine cycle are derived. The maximum work output and the corresponding efficiency are calculated. The bound of the pressure ratio of the two constant-pressure processes that the Brayton engine cycle can be operated normally is determined. Some important characteristic curves of the cycle, such as the work output versus pressure ratio curves, the efficiency versus pressure ratio curves, the maximum work output ratio versus temperature of the heat reservoirs curves, and so on, are presented. Three special cases are discussed in detail. The results obtained may reveal the general performance characteristics of a Brayton engine working with an ideal Fermi gas.

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