Results 41 to 50 of about 1,457,577 (286)

Potentialities of TEC topping: A simplified view of parametric effects [PDF]

open access: yes, 1980
An examination of the benefits of thermionic-energy-conversion (TEC)-topped power plants and methods of increasing conversion efficiency are discussed. Reductions in the cost of TEC modules yield direct decreases in the cost of electricity (COE) from TEC-
Morris, J. F.
core   +2 more sources

ACCURATE CALCULATION OF THE POWER TRANSFER AND EFFICIENCY IN RESONATOR ARRAYS FOR INDUCTIVE POWER TRANSFER [PDF]

open access: yesProgress In Electromagnetics Research B, 2019
This paper studies the power transfer characteristics of a resonator array for inductive power transfer by means of the accurate analytical solution of its circuit model. Through the mathematical inversion of a tridiagonal matrix, it is possible to obtain closed-form expressions for the current in each resonator and consequently expressions for the ...
Alberto J.   +3 more
openaire   +2 more sources

Comparison of the heat transfer efficiency of nanofluids [PDF]

open access: yes, 2015
The continuously increasing power involved in many applications, coupled with the very small size of a number of component devices, is pushing the technical community to look for more efficient heat transfer systems, to remove the heat generated and ...
Bubbico, Roberto   +4 more
core   +1 more source

Maximum Efficiency Conditions Satisfying Power Regulation Constraints in Multiple-Receivers Wireless Power Transfer

open access: yesEnergies, 2022
We propose the conditions for maximum overall efficiency at the constraint of satisfying asymmetric load power requirements for each receiver, for multiple-receivers wireless power transfer.
Won Lee, Woochan Lee, Dukju Ahn
doaj   +1 more source

Performances of a Contactless Energy Transfer System for Rotary Ultrasonic Machining Applications

open access: yesIEEE Access, 2020
In rotary ultrasonic machining (RUM), the contactless energy transfer (CET) system based on the rotary transformer can replace the well-established slip ring technology to supply power for the revolving ultrasonic vibrator.
Xueming Zhu, Liping Liu, Houjun Qi
doaj   +1 more source

Energy-Efficient Power Allocation in OFDM Systems with Wireless Information and Power Transfer

open access: yes, 2013
This paper considers an orthogonal frequency division multiplexing (OFDM) downlink point-to-point system with simultaneous wireless information and power transfer.
Lo, Ernest S.   +2 more
core   +1 more source

Wireless Power Transfer for High-precision Position Detection of Railroad Vehicles

open access: yes, 2015
Detection of vehicle position is critical for successful operation of intelligent transportation system. In case of railroad transportation systems, position information of railroad vehicles can be detected by GPS, track circuits, and so on.
Har, Dongsoo, Ryu, Hyun-Gyu
core   +1 more source

Linear irreversible heat engines based on the local equilibrium assumptions [PDF]

open access: yes, 2015
We formulate an endoreversible finite-time Carnot cycle model based on the assumptions of local equilibrium and constant energy flux, where the efficiency and the power are expressed in terms of the thermodynamic variables of the working substance.
Izumida, Yuki, Okuda, Koji
core   +2 more sources

Beamforming for Magnetic Induction based Wireless Power Transfer Systems with Multiple Receivers

open access: yes, 2015
Magnetic induction (MI) based communication and power transfer systems have gained an increased attention in the recent years. Typical applications for these systems lie in the area of wireless charging, near-field communication, and wireless sensor ...
Akyildiz, I. F.   +2 more
core   +1 more source

Energy-Efficient Optimization for Wireless Information and Power Transfer in Large-Scale MIMO Systems Employing Energy Beamforming [PDF]

open access: yes, 2013
In this letter, we consider a large-scale multiple-input multiple-output (MIMO) system where the receiver should harvest energy from the transmitter by wireless power transfer to support its wireless information transmission.
Chen, Xianfu   +2 more
core   +1 more source

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