Effect of supply velocity and heat generation density on cooling and ventilation effectiveness in room with impinging jet ventilation system

2021 ◽  
pp. 108299
Author(s):  
Haruna Yamasawa ◽  
Tomohiro Kobayashi ◽  
Toshio Yamanaka ◽  
Narae Choi ◽  
Mathias Cehlin ◽  
...  
Keyword(s):  
Heat Generation ◽  
Ventilation System ◽  
Impinging Jet ◽  
Jet Ventilation ◽  
Ventilation Effectiveness ◽  
Supply Velocity

scholarly journals Applicability of displacement ventilation and impinging jet ventilation system to heating operation

2021 ◽  
Author(s):  
Haruna Yamasawa ◽  
Tomohiro Kobayashi ◽  
Toshio Yamanaka ◽  
Narae Choi ◽  
Mathias Cehlin ◽  
...  
Keyword(s):  
Ventilation System ◽  
Impinging Jet ◽  
Jet Ventilation ◽  
Displacement Ventilation

scholarly journals EXPERIMENTAL INVESTIGATION AND CFD SIMULATION OF INDOOR AIR QUALITY IN ROOM USING IMPINGING JET VENTILATION SYSTEM AT DIFFERENT OCCUPANT DISTRIBUTION

2021 ◽  
Vol 21 (2) ◽  
pp. 130-147
Author(s):  
Ala'a Abbas Mahdi ◽  
Sara Mohammed Abbas
Keyword(s):  
Air Quality ◽  
Thermal Comfort ◽  
Numerical Study ◽  
Ventilation System ◽  
Experimental Studies ◽  
Impinging Jet ◽  
The Other ◽  
Jet Ventilation ◽  
Analysis And Design ◽  
Human Thermal Comfort

The current paper reports the analysis and design of air quality and human thermal comfort in rooms using impinging jet ventilation system at different occupant distribution. Theoretical and experimental studies at different situations of occupant distribution used the square cross sectional supply air duct with height from the foot level end (0.1h). This work presents a numerical study for predicting the indoor airflow and temperature distribution by adopting impinging jet ventilation system in office room. The emergence of the three zones flow field of an impinging jet is mostly divided into three distinguished zones: impingement zone, wall jet zone and free jet zone which produce excessive kinetic energy at the stagnation zone and distribute approximately in the longitudinal and lateral directions over the floor. Acceptable Air Distribution Performance Index (ADPI), effective temperature and ventilation efficiency were found at situations of occupant distribution (when the occupant located at the center of the room one sitting in front of the other gives optimum human thermal comfort if compared with the other situations of occupant distributions).

scholarly journals SMOKE CONTROL AND NOXES IN CAR PARKS

2017 ◽  
Vol 18 (2) ◽  
Author(s):  
COSTEL-MARIAN PIETREANU ◽  
ROBERT-DUMITRU STRUGARIU ◽  
VALERIU PANAITESCU
Keyword(s):  
Control System ◽  
Ventilation System ◽  
Extraction System ◽  
Energy Costs ◽  
Jet Ventilation ◽  
Smoke Control ◽  
Car Park ◽  
And Control

<p>The main purpose of this article is to describe the principles of CO ventilation in car parks and to provide a brief description of smoke extraction and control system. It provides information on the possibilities provided by jet ventilation. In closed car park, inRomania, we use for CO and smoke extraction system fans and a lot of ducts. In many country of theEurope, they use for this jet ventilation system, without ducts, characterized by low installation and energy costs.</p>

Emergency Transtracheal Jet Ventilation System

1990 ◽  
Vol 73 (4) ◽  
pp. 787-787 ◽  
Author(s):  
Paul D. Meyer
Keyword(s):  
Ventilation System ◽  
Jet Ventilation

Multi-objective optimization of impinging jet ventilation systems: Taguchi-based CFD method

2018 ◽  
Vol 11 (6) ◽  
pp. 1207-1214 ◽  
Author(s):  
Samira Haghshenaskashani ◽  
Behrang Sajadi ◽  
Mathias Cehlin
Keyword(s):  
Impinging Jet ◽  
Multi Objective Optimization ◽  
Jet Ventilation ◽  
Multi Objective ◽  
Cfd Method ◽  
Ventilation Systems
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