Results 21 to 30 of about 89,348 (163)

Study on Boiling Heat Transfer Characteristics of R290 in Horizontal Micro-tubes

open access: yesZhileng xuebao, 2020
In this study the boiling heat transfer characteristics of R290 in a 1, 2, and 4 mm horizontal micro-tube were investigated experimentally. The effects of mass flow rate [50-600 kg/(m2?s)], quality (0-1), and heat flux (5-20 kW/m2) on the boiling heat ...
Wang Haoyu   +3 more
doaj  

Heat Transfer Characteristics of Condensers in Rotating Heat Pipe Grinding Wheel under Impinging Jet

open access: yesZhileng xuebao, 2023
An axial rotary heat pipe grinding wheel is a new type of grinding wheel used to strengthen the heat transfer in the grinding arc area. Its heat transfer performance directly affects the heat transfer performance of the entire heat pipe grinding wheel ...
Zhang Liyong   +3 more
doaj  

Study of New Mini-Channel Trans-Critical CO2 Heat Pump Gas Cooler

open access: yesMicromachines, 2022
A gas cooler is one of the important parts of a carbon dioxide (CO2) heat pump water heater, and it must meet the needs of not only pressurization but also heat transfer. It is important to study gas coolers. In this paper, a heat exchanger with a spiral
Jiawei Jiang   +4 more
doaj   +1 more source

Heat transfer direction dependence of heat transfer coefficients in annuli [PDF]

open access: yesHeat and Mass Transfer, 2017
The National Research Foundation of South Africa (NRF), Eskom Tertiary Education Support Programme (TESP), University of Stellenbosch / University of Pretoria, South African National Energy Research Institute (SANERI) / South African National Energy Development Institute (SANEDI), Council for Scientific and Industrial Research (CSIR), Energy Efficiency
Prinsloo, F.P.A. (Francois)   +2 more
openaire   +2 more sources

Peristaltic motion of Maxwell fluid subject to convective heat and mass conditions

open access: yesAin Shams Engineering Journal, 2021
This article concentrates on peristalsis of Maxwell fluid in a symmetric channel with heat and mass convective conditions. Analysis is given in presence of viscous dissipation.
Naveed Iqbal   +3 more
doaj   +1 more source

Study on comprehensive performance evaluation for condensation heat transfer inside the micro-fin tube

open access: yesAdvances in Mechanical Engineering, 2020
To develop a comprehensive performance evaluation model of heat transfer tube, the flow condensation heat transfer experiment of R1234yf inside the tube was operated.
Liu Wei
doaj   +1 more source

Study on Natural Circulation Heat Transfer Characteristics of Different Liquid Metals Based on Factor Analysis

open access: yesFrontiers in Energy Research, 2020
The study of the commonness and differences of natural circulation of different liquid metals plays an important role in improving the safety of reactors.
Feng Xiang   +14 more
doaj   +1 more source

Sensitivity of the Heat-Transfer Coefficient Calculation [PDF]

open access: yesMaterials Performance and Characterization, 2014
AbstractThe purpose of the Liščić/Petrofer probe is to determine the cooling intensity during liquid quenching in laboratory and workshop environments. The surface heat-transfer coefficient is calculated by the one-dimensional finite-volume method from the smoothed temperature curve, measured at a near-surface point in the probe.
openaire   +2 more sources

Experimental Study on the Boiling Heat Transfer Characteristics in Micro-channel with Two Different Working Medium

open access: yesZhileng xuebao, 2016
Experiments are performed in rectangular micro-channels (dH =0.293 mm) under the condition of different mass flux and heat flux to evaluate the flow boiling heat transfer characteristics with deionized water and anhydrous ethanol.
Chen Yumin, Liu Dongyao
doaj  

Evaluation of selected methods of the heat transfer coefficient determination in fin-and-tube cross-flow heat exchangers

open access: yesMATEC Web of Conferences, 2018
The work is a part of a thermodynamic analysis of a finned cross-flow heat exchanger of the liquid-gas type. The heat transfer coefficients on the liquid and the gas side and the area of the heat transfer are the main parameters describing such a device.
Bury Tomasz   +1 more
doaj   +1 more source

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