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Maximum Power Efficiency. [PDF]
Entropy (Basel)New research often starts with vague, dream-like ideas, conversed on over coffee in the free flow of animated discussions about physics, the growing up of one’s children, politics, and the success of the local ice hockey team [...]
Ahlborn B, Curzon F.
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Increasing the power efficiency of an IEEE802.11a Power Amplifier [PDF]
2005 IEEE 61st Vehicular Technology Conference, 2005 OFDM modulation is extensively used in many applications. However, it also exhibits high peak-to-average power ratios (PAPR) requiring the associated transmit amplifier to have a very large linear region. This linear amplifier does therefore have poor power efficiency. To reduce the PAPR, cupping and filtering was carried out at baseband.
Chen, K, Morris, KA, Beach, MA
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Modeling and control strategy for hydrogen production systems coupled with PV and battery storage [PDF]
E3S Web of Conferences, 2023 Environmental conditions can significantly affect the performance of photovoltaic (PV) hydrogen production systems, resulting in fluctuations in PV output and suboptimal hydrogen production.
Hu Wenbo +4 more
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Case Studies in Thermal Engineering, 2023 The secondary water droplets in the steam turbine wet steam stage are easy to cause water erosion damage to the rotor cascade, and there is a large speed slip between the main steam flow and the secondary water droplets, which will seriously affect the ...
Xu Han +6 more
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Case Studies in Thermal Engineering, 2023 Secondary flow loss accounts for a large proportion of the internal flow loss in turbine stages. The use of end-wall fences can effectively reduce secondary flow loss. In this study, the White cascade was taken as the research object, and the position of
Xu Han +5 more
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Case Studies in Thermal Engineering, 2022 This paper proposes a combined power and steam system integrated with solar photovoltaic/thermal collectors. The system uses solar energy and natural gas to generate electricity and recovers waste heat from the internal combustion engine and solar ...
Jiangjiang Wang +3 more
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Case Studies in Thermal Engineering, 2022 The condensed flow of wet steam in the low-pressure cylinder of a steam turbine will affect the safety and economy of the unit's operation. Therefore, it is necessary to reduce the influence of the wet steam on the turbine blades after condensation ...
Xu Han +3 more
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Effect of Contact Angle Hysteresis on Evaporation Dynamics of a Sessile Drop on a Heated Surface [PDF]
Journal of Applied Fluid Mechanics, 2022 Contact angle hysteresis (CAH) is a significant factor affecting the drop motion on solid substrates. A model of CAH is introduced to explore the influence of CAH on the dynamics of a sessile drop on a uniformly heated surface, and a two-dimensional ...
X. M. Ye +3 more
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World Electric Vehicle Journal, 2022 With the increase of fire problems of new energy vehicles (EVs), more and more attention has been paid to charging safety. Firstly, the charging safety problems and protection strategies in the power grid are summarized from the grid side, the charging ...
Linru Jiang +4 more
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Universality of Efficiency at Maximum Power [PDF]
Physical Review Letters, 2009 We investigate the efficiency of power generation by thermo-chemical engines. For strong coupling between the particle and heat flows and in the presence of a left-right symmetry in the system, we demonstrate that the efficiency at maximum power displays universality up to quadratic order in the deviation from equilibrium. A maser model is presented to
Esposito, Massimiliano +2 more
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