Results 41 to 50 of about 708,578 (251)

Experimental and Performance Analysis of Direct Expansion Solar Assisted Heat Pump System for Space Heating

Zhongguo dianli, 2023
A direct expansion solar assisted heat pump (DX-SAHP) system for space heating with solar heat collector/evaporator and fin evaporator in parallel is constructed, the thermal cycle process of the system is analyzed, an experiment platform of the system ...
Guangbai MA, Zhaohui YANG, Shiqiang SU, Yanjun DAI   +3 more
doaj   +1 more source

On the self-excitation mechanisms of Plasma Series Resonance oscillations in single- and multi-frequency capacitive discharges [PDF]

, 2015
The self-excitation of plasma series resonance (PSR) oscillations is a prominent feature in the current of low pressure capacitive radio frequency (RF) discharges.
Brandt, Steven, Derzsi, Aranka, Donko, Zoltan, Korolov, Ihor, Schuengel, Edmund, Schulze, Julian   +5 more
core   +3 more sources

Thermal Modeling of Lithium-Ion Battery Under High-Frequency Current Excitation and Comparative Study of Self-Heating Scheme

Batteries
High-frequency ripple current excitation reduces the lithium precipitation risk of batteries during self-heating at low temperatures. To study the heat generation behavior of batteries under high-frequency ripple current excitation, this paper ...
Hao Li, Jianan Chen, Yingtao Ma, Weizhi Liu, Lei Tang, Bing Liu   +5 more
doaj   +1 more source

Evaluation of Weakening Characteristics of Reinforced Concrete Using High-Frequency Induction Heating Method

Applied Sciences, 2021
To increase the quality of recycling, a new demolition technique is required that can work in parallel with existing crushing methods, which use large equipment with high crushing efficiency.
Myung-kwan Lim, Changhee Lee
doaj   +1 more source

Weak compressible magnetohydrodynamic turbulence in the solar corona

, 2005
This Letter presents a calculation of the power spectra of weakly turbulent Alfven waves and fast magnetosonic waves ("fast waves") in low-beta plasmas.
Benjamin D. G. Chandran, J. Shebalin, V. E. Zakharov, V. E. Zakharov   +3 more
core   +1 more source

A New Downhole High-frequency Heating Steam Generator

Shiyou jixie, 2016
To address the issues of low thermal efficiency and excessive power consumption lying in steam drive technology and power-frequency electric heating method often applied in the process of heavy oil exploitation,a new downhole high-frequency heating steam
Zhu Jun, Jiang Lin, Cui Shengli, Wang Haitang, Chen Bao   +4 more
doaj  

On chromospheric heating during flux emergence in the solar atmosphere

, 2017
Context. The radiative losses in the solar chromosphere vary from 4~kW~m$^{-2}$ in the quiet Sun, to 20~kW~m$^{-2}$ in active regions. The mechanisms that transport non-thermal energy to and deposit it in the chromosphere are still not understood.
Carlsson, Mats, Danilovic, Sanja, Leenaarts, Jorrit, Rodríguez, Jaime de la Cruz, Scharmer, Göran   +4 more
core   +1 more source

Effect of Radio Frequency Combined with Hot Air Heating on Degradation of Aflatoxin B1 and Corn Quality [PDF]

Shipin Kexue
This study analyzed the effects of radio frequency-hot air treatment under different conditions of initial corn moisture content (19.05%, 22.25%, and 25.55%), radio frequency heating temperature (55, 65, 75, and 85 ℃) and heating time (10, 15, 20, and 25
ZHANG Jinfang, LI Mei, CHEN Wei
doaj   +1 more source

Plasma electron acceleration in a non-resonant microwave heating scheme below the electron cyclotron frequency

New Journal of Physics, 2022
Microwave heating of over-dense plasmas is routinely achieved in the stellarator TJ-K. In contrast to usually applied heating scenarios in tokamaks or stellarators, an operational regime is described where the heating occurs well below the electron ...
A Köhn-Seemann, G Birkenmeier, P Diez, E Holzhauer, S Merli, M Ramisch, G Sichardt, U Stroth   +7 more
doaj   +1 more source

Heating of Micro-protrusions in Accelerating Structures

, 2013
The thermal and field emission of electrons from protrusions on metal surfaces is a possible limiting factor on the performance and operation of high-gradient room temperature accelerator structures.
Antonsen, T. M., Jensen, K. L., Kashyn, D. G., Keser, A. C., Nusinovich, G. S.   +4 more
core   +2 more sources