نتایج جستجو برای: convection and radiation

تعداد نتایج: 16882486  

Journal: :E3S web of conferences 2023

This study aims to evaluate the indoor thermal environment within a detached residence in summer by applying combined convection and radiation air conditioning system using refrigerant gas of room conditioners (RACs). First, field measurements were performed at Hiroshima, Japan, July August 2021. Consequently, PMV values generally maintained comfortable range during air-conditioning operation. ...

Journal: :TRANSACTIONS OF THE JAPAN SOCIETY OF MECHANICAL ENGINEERS Series B 1986

Journal: :E3S web of conferences 2021

Insights into the mechanism of reflow soldering temperature curve, a mathematical model change circuit board surface is established. The heat transfer methods, radiation and convection analyzed in detail. curve air inside furnace solved by establishing an one-dimensional conduction fitting coefficients. received mainly comes from small zone. Depending on area where located, itemized 3 types: ga...

Journal: :journal of computational applied mechanics 0
g. c. rana nscbm govt. college hamirpur ramesh chand govt. college nurpur, himachal pradesh india veena sharma himachal pradessh university shimla abhilasha sharda govt college amb

on the onset of triple-diffusive convection in a horizontal layer of nanofluid heated from below and salted from above and below is studied both analytically and numerically. the effects of thermophoresis and brownian diffusion parameters are also introduced through buongiorno model in the governing equations. by using linear stability analysis based on perturbation theory and applying normal m...

Journal: :Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics 2000
T Neicu A Pradhan D A Larochelle A Kudrolli

We report the spatiotemporal response of Bacillus subtilis growing on a nutrient-rich layer of agar to ultraviolet (UV) radiation. Below a crossover temperature, the bacteria are confined to regions that are shielded from UV radiation. A forced convection of the population is effected by rotating a UV radiation shield relative to the Petri dish. The extinction speed at which the bacterial colon...

Journal: : 2021

In this article, a prototype empirical section of the composite girder was performed to verify temperature distributions and changes in concrete bridges under environmental thermal stresses. T-Beam placed directly subjected conditions endure change convection, convection includes solar radiation, surrounding air wind speed. addition, paper 3D finite-element studies represented by COMSOL MULTIPH...

2004
Maciej K. Ginalski Andrzej J. Nowak

The major objective of this study was, using the modern numerical techniques, to investigate transport processes of heat and mass transfer within an infant incubator, were the premature newborn baby is nursed. This investigation consists of calculations of the air flow inside the incubator, including coupled heat transfer due to heat conduction, convection, thermal radiation and evaporation. Ob...

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