Results 11 to 20 of about 5,587 (207)

The effect of straight chimney temperature on pollutant dispersion [PDF]

open access: yesE3S Web of Conferences, 2021
Air pollution is considered one of the most important contemporary problems that threaten a person's life and environment. Among the major sources of air pollution are pollutants emitted from smokestacks. The objective of this work is to numerically study the dispersion of a pollutant ejected from a chimney into an air stream.
Zair Fida   +2 more
openaire   +2 more sources

An Experimental Investigation of Increasing the Thermal Efficiency of a Finned Tube Heat Exchanger by Using the Chimney Effect

open access: yesEnergies, 2022
In the paper, experimental analyses of the free convection heating transfer in a flat wavy-fin heat exchanger with the dimensions of 500 × 500 mm were investigated.
Mikołaj Matuszczak   +1 more
doaj   +1 more source

Absence of visitors during lockdown reveals natural variation in carbon dioxide level in the Glowworm Cave, Waitomo, New Zealand

open access: yesInternational Journal of Speleology, 2022
Waitomo Glowworm Cave is a highly visited cave where the highlight is viewing the bioluminescence display of a large colony of glowworms. Anthropogenic carbon dioxide build-up in the cave is prevented by management of chimney-effect ventilation aided by ...
David Merritt   +2 more
doaj   +1 more source

Application of the Chimney Cap as a Method of Improving the Effectiveness of Natural Ventilation in Buildings

open access: yesPolish Maritime Research, 2020
Adequately designed natural ventilation is the cheapest and easiest way to effectively remove indoor pollutants and keep the air inside a building fresh. A prediction of the performance and effectiveness of ventilation in order to determine the design of
Antczak-Jarząbska Romana   +1 more
doaj   +1 more source

Chimney Structure of Hollow Sand Mold for Casting Solidification

open access: yesMetals, 2022
The hollow sand mold can affect the cooling of the casting during the solidification process. A chimney structure of a hollow sand mold that mainly consists of a two-layer shell with through channels was proposed.
Jingying Xu   +6 more
doaj   +1 more source

Experimental investigation of solar chimney with concentrated collector (SCCC)

open access: yesCase Studies in Thermal Engineering, 2022
In this article, we have experimentally studied the effect of solar radiation concentration on a solar chimney collector. We analytically measured the performance of the solar chimney with concentrated collector (SCCC) while comparing it with the ...
El Hadji I Cisse   +4 more
doaj   +1 more source

HOUSE'S SOLAR CHIMNEY A NUMERICAL ANALYSIS ON THE THERMAL PERFORMANCE IN JAKARTA

open access: yesJurnal Ilmiah SINERGI, 2020
The abundance of solar light in tropical countries is the advantage of the utilization of solar energy. Increasingly expensive electricity forces buildings to use passive ventilation as building coolers. One of them is the use of the stack effect through
Abraham Seno Bachrun   +3 more
doaj   +1 more source

Effect of Divergent Chimneys on the Performance of a Solar Chimney Power Plant

open access: yesEnergy Procedia, 2017
Abstract This paper numerically examined the performance of divergent chimneys in solar chimney power plants with two shape-controlling parameters, that is, the area ratio of the chimney exit over the entrance and the divergent angle. Compared with the conventional cylindrical chimneys, a higher power output in the divergent-chimney system could be ...
Leung, YC, HU, S, Chen, MZ
openaire   +2 more sources

EXPERIMENTAL STUDY OF SOLAR CHIMNEY PERFORMANCE FOR PASSIVE HEATING

open access: yesIraqi Journal for Mechanical and Materials Engineering, 2018
An experimental investigation on solar chimney used for heating under climate of Iraq is carried out. Experiments were conducted on the chimney installed on vertical wall with absorber plate placed at the front side of the air gap.
Majid H Majeed, Ibrahim S Resen
doaj   +1 more source

Parameterization Studies of Solar Chimneys in the Tropics

open access: yesEnergies, 2013
The paper examines the effect of the solar chimney’s stack height, depth, width and inlet position on the interior performance (air temperature and speed at 1.20 m height above the ground) as well as proposes an optimal tropical solar chimney ...
Alex Yong Kwang Tan, Nyuk Hien Wong
doaj   +1 more source

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