Laboratory Study of the Effect of Window Size and Location on Indoor Air Motion

1965 ◽  
Vol 8 (2) ◽  
pp. 42-45 ◽  
Author(s):  
B. GIVONI
Keyword(s):  
Laboratory Study ◽  
Indoor Air ◽  
Window Size ◽  
Air Motion

Study of the influence of a pelmet type wind deflector on indoor air motion

1975 ◽  
Vol 10 (4) ◽  
pp. 231-235
Author(s):  
I. Chand ◽  
P.K. Bhargava ◽  
N.L.V. Krishak
Keyword(s):  
Indoor Air ◽  
Air Motion

The Potted-Plant Microcosm Substantially Reduces Indoor Air VOC Pollution: II. Laboratory Study

2006 ◽  
Vol 177 (1-4) ◽  
pp. 59-80 ◽  
Author(s):  
Ralph L. Orwell ◽  
Ronald A. Wood ◽  
Margaret D. Burchett ◽  
Jane Tarran ◽  
Fraser Torpy
Keyword(s):  
Laboratory Study ◽  
Indoor Air ◽  
Potted Plant

scholarly journals Influence of Roof Windows Area Changes on the Classroom Indoor Climate in the Attic Space: A Case Study

2020 ◽  
Vol 12 (12) ◽  
pp. 5046
Author(s):  
Erika Dolnikova ◽  
Dusan Katunsky ◽  
Marian Vertal ◽  
Marek Zozulak
Keyword(s):  
Indoor Air ◽  
Window Size ◽  
Building Design ◽  
Indoor Climate ◽  
Complex Part ◽  
Considerable Benefit ◽  
To Receive ◽  
Storage Properties ◽  
Overcast Sky

Windows are a complex part of building design and provide a considerable benefit, including to school buildings. For the evaluation of the daylighting conditions prevailing in classrooms, the daylight factor (DF) was considered as the most appropriate parameter for indicating the quantity of admitted daylight. The DF values and CIE overcast sky were calculated using Velux Daylight Visualizer 3 software. The task of the paper is to compare various roof window openings in relation to the level of daylight in the attic, looking to optimize the use of the attic for teaching. The indoor air temperature has a general influence on comfort in the interior, in addition to daylight. In winter, the situation is not critical. The thermal insulation properties of packaging structures are sufficient. The situation is worse in summer, due to the fact that the heat-storage properties are undersized and there is excessive overheating of the indoor air. Four variants of roof windows and their influence on the overall microclimate in the attic are compared. The variant without roof windows is a suitable solution with regard to minimum overheating, but the worst situation for daylight. In order to receive even more light from the window (by moving windows to the top of the roof), we can use variant 2. Based on a combination of daylight calculations and summer temperature, a graphical dependence on window size prediction in terms of top and combined lighting is derived. This was hypothesized without shading the windows. Of course, the shading elements of these windows or cooling are expected in the summer. Finally, the energy required for cooling is compared depending on the size of the windows and achievement of the permissible temperature.

scholarly journals Effects of Thermal Mass, Window Size, and Night-Time Ventilation on Peak Indoor Air Temperature in the Warm-Humid Climate of Ghana

2013 ◽  
Vol 2013 ◽  
pp. 1-9 ◽  
Author(s):  
S. Amos-Abanyie ◽  
F. O. Akuffo ◽  
V. Kutin-Sanwu
Keyword(s):  
Simulation Model ◽  
Air Temperature ◽  
Indoor Air ◽  
Window Size ◽  
Simulation Software ◽  
Maximum Temperature ◽  
Thermal Mass ◽  
Mass Window ◽  
Humid Climate ◽  
Night Time

Most office buildings in the warm-humid sub-Saharan countries experience high cooling load because of the predominant use of sandcrete blocks which are of low thermal mass in construction and extensive use of glazing. Relatively, low night-time temperatures are not harnessed in cooling buildings because office openings remain closed after work hours. An optimization was performed through a sensitivity analysis-based simulation, using the Energy Plus (E+) simulation software to assess the effects of thermal mass, window size, and night ventilation on peak indoor air temperature (PIAT). An experimental system was designed based on the features of the most promising simulation model, constructed and monitored, and the experimental data used to validate the simulation model. The results show that an optimization of thermal mass and window size coupled with activation of night-time ventilation provides a synergistic effect to obtain reduced peak indoor air temperature. An expression that predicts, indoor maximum temperature has been derived for models of various thermal masses.

scholarly journals The effect of ceiling configurations on indoor air motion and ventilation flow rates

2011 ◽  
Vol 46 (5) ◽  
pp. 1211-1222 ◽  
Author(s):  
Anh Tuan Nguyen ◽  
Sigrid Reiter
Keyword(s):  
Indoor Air ◽  
Flow Rates ◽  
Air Motion

Laboratory and in-situ analysis of comet dust

1988 ◽  
Vol 46 ◽  
pp. 8-9
Author(s):  
D.E. Brownlee ◽  
A.L. Albee
Keyword(s):  
Electron Microscopy ◽  
Solar System ◽  
Laboratory Study ◽  
Isotopic Analysis ◽  
Building Blocks ◽  
Sem Analysis ◽  
Early Solar System ◽  
Cometary Material ◽  
Comet Dust

Comets are primitive, kilometer-sized bodies that formed in the outer regions of the solar system. Composed of ice and dust, comets are generally believed to be relic building blocks of the outer solar system that have been preserved at cryogenic temperatures since the formation of the Sun and planets. The analysis of cometary material is particularly important because the properties of cometary material provide direct information on the processes and environments that formed and influenced solid matter both in the early solar system and in the interstellar environments that preceded it.The first direct analyses of proven comet dust were made during the Soviet and European spacecraft encounters with Comet Halley in 1986. These missions carried time-of-flight mass spectrometers that measured mass spectra of individual micron and smaller particles. The Halley measurements were semi-quantitative but they showed that comet dust is a complex fine-grained mixture of silicates and organic material. A full understanding of comet dust will require detailed morphological, mineralogical, elemental and isotopic analysis at the finest possible scale. Electron microscopy and related microbeam techniques will play key roles in the analysis. The present and future of electron microscopy of comet samples involves laboratory study of micrometeorites collected in the stratosphere, in-situ SEM analysis of particles collected at a comet and laboratory study of samples collected from a comet and returned to the Earth for detailed study.

When Apologies for Injustice Matter

2008 ◽  
Vol 13 (4) ◽  
pp. 239-247 ◽  
Author(s):  
David De Cremer ◽  
Barbara C. Schouten
Keyword(s):  
Laboratory Study ◽  
Interaction Effect ◽  
Interactive Effect ◽  
Cross Sectional ◽  
Fairness Perceptions ◽  
Organizational Survey ◽  
Experimental Laboratory

The present research examined the idea that the effectiveness of apologies on promoting fairness perceptions depends on how meaningful and sincere the apology is experienced. More precisely, it was predicted that apologies are more effective when they are communicated by an authority being respectful to others. A study using a cross-sectional organizational survey showed that an apology (relative to giving no apology) revealed higher fairness perceptions, but only so when the authority was respectful rather than disrespectful. In a subsequent experimental laboratory study the same interaction effect (as in Study 1) on fairness perceptions was found. In addition, a similar interaction effect also emerged on participants’ self-evaluations in terms of relational appreciation (i.e., feeling valued and likeable). Finally, these self-evaluations accounted (at least partly) for the interactive effect on fairness perceptions.

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