Results 11 to 20 of about 90,225 (303)

Experimental Study on Heat Transfer Characteristics of Radiant Cooling and Heating [PDF]

open access: yesEnergies
While traditional air conditioning systems serve their purpose, radiation air conditioning systems provide several benefits, including improved comfort, higher energy efficiency, and lower initial costs.
Shengpeng Chen, Xiaohui Ma, Chaoling Han
doaj   +2 more sources

Numerical simulation of the gas flow with radiation and heat transfer [PDF]

open access: yesEPJ Web of Conferences, 2022
In this article we focus on the heating of the solid body placed in the vicinity of the intense heat source. We simulate the heat transfer caused by the direct contact with surrounding heated gas. Furthermore it is necessary to take into account the heat
Česenek Jan   +2 more
doaj   +1 more source

Natural Convection and Radiation in Enclosures with Semi-transparent Medium: Conjugate CFD Analysis [PDF]

open access: yesJournal of Applied Fluid Mechanics, 2022
Radiation heat transfer is often ignored in several studies as it has few significant effects in some cases. However, when using a participating fluid, where the molecules interact with the radiative spectrum, these effects cannot be disregarded.
E. G. Barbosa   +3 more
doaj   +1 more source

Evaluation of radiation heat transfer in porous medial: Application for a pebble bed modular reactor cooled by CO2 gas [PDF]

open access: yesNuclear Technology and Radiation Protection, 2013
This work analyses the contribution of radiation heat transfer in the cooling of a pebble bed modular reactor. The mathematical model, developed for a porous medium, is based on a set of equations applied to an annular geometry.
Sidi-Ali Kamel   +4 more
doaj   +1 more source

Investigation of the forced convection heat transfer in the presence of radiation in metal foams using HPM [PDF]

open access: yesمجله مدل سازی در مهندسی, 2016
Forced convection heat transfer in metal foams in the presence of radiation heat transfer is studied using the homotopy perturbation method (HPM). To see wall effects, Darcy-Brinkman model for the flow in porous media is used.
Maziar Dehghan   +4 more
doaj   +1 more source

Heat transfer enhancement by employing inserted plate in turbine blade internal cooling channel

open access: yesCase Studies in Thermal Engineering, 2023
A novel method by employing an inserted plate in turbine blades internal cooling channel is presented for the first time in this study, which can extend cold surfaces for radiation and therefore enhance total heat transfer and improve heat transfer ...
Jie Liu, Jiabing Wang, Kun Yang
doaj   +1 more source

Building thermal environment solution model and radiation heat transfer calculation model based on Gebhart absorption coefficient

open access: yesAdvances in Mechanical Engineering, 2023
The building walls temperatures are different, and there are radiation heat transfers between the walls, which have the characteristics of multiple reflections and multiple absorptions.
Liugen Lv, Yi Xiang, Chen Huang
doaj   +1 more source

Coupled Heat and Flow Analysis Inside a Diversion-Type Gas Heater With Vertical Guide Plate Structure

open access: yesFrontiers in Energy Research, 2022
In the natural gas heating process, the cylinder-type heater using water as an intermediate heating medium is the most extensively used. The heat exchange rate between the heating medium water and the fire and gas tubes in the great-capacity cylinder ...
Yun Guo, Xuning Zhang, Zhongwei Zhou
doaj   +1 more source

Finite Element Modeling of Nonstationary Problems of Heat Conduction under Complex Heat Transfer

open access: yesИзвестия Иркутского государственного университета: Серия "Математика", 2023
The article presents a numerical simulation of nonstationary heat conduction problems under complex heat transfer, which includes such heat transfer mechanisms as heat conduction, convection, and radiation.
A. M. Ikramov, A. M. Polatov
doaj   +1 more source

Experimental determination of natural convection heat transfer coefficients in an attic shaped enclosure [PDF]

open access: yes, 2010
Heat transfer by natural convection in triangular enclosures is an area of significant importance in applications such as the design of greenhouses, attics and solar water heaters.
Carson, James K.   +2 more
core   +1 more source

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