scholarly journals CLASSIFICATION OF THE MGR WASTE TREATMENT BUILDING VENTILATION SYSTEM

1999 ◽  
Author(s):  
S.E. Salzman
Keyword(s):  
Waste Treatment ◽  
Ventilation System ◽  
Building Ventilation

scholarly journals Study on IBS Cooling Panel Wall System with Difference Types of Cooling Mediums

2020 ◽  
Vol 11 (2) ◽  
Author(s):  
Eny Nor Syahira Mohamad Hashim ◽  
◽  
Norhafizah Salleh ◽  
Noor Azlina Abdul Hamid ◽  
◽  
...  
Keyword(s):  
Relative Humidity ◽  
Air Conditioning ◽  
Ventilation System ◽  
Target Strength ◽  
Outdoor Temperature ◽  
Design Concepts ◽  
Building Ventilation ◽  
American Society ◽  
Wall System ◽  
Indoor And Outdoor

This paper proposes a cooling house system that can promote thermal comfort in buildings without air-conditioning. The cooling panel wall forms a part of an Integrated Building System (IBS), and is essentially made of tubes filled with either water or glycerin as the coolant. Target strength for the panel wall was designed based on the Malaysian Standard (MS) while the building ventilation system followed the American Society of Heating, Refrigerating, and Air Conditioning Engineers (ASHRAE) standard. The results are reported based on indoor and outdoor temperature difference together with relative humidity to identify the best performing house model and also coolant. The outcome of this research is expected to add value to design concepts with a better promotion of air flow and circulation in the building, without over-usage of natural resources and higher building cost to achieve the same objective.

Carbon Monoxide(II) Purification in the Plenum Valves of the Building Ventilation System

2019 ◽  
Vol 23 (10) ◽  
pp. 10-15
Author(s):  
N.A. Litvinova
Keyword(s):  
Carbon Monoxide ◽  
Ventilation System ◽  
Outer Wall ◽  
Field Studies ◽  
Cleaning Efficiency ◽  
Urban Buildings ◽  
Freundlich Equation ◽  
Building Ventilation ◽  
Effective Sorbent ◽  
Selection Of

The results of field studies on the selection of the best way to clean the supply air from carbon monoxide(II) in urban buildings are presented. A pilot plant has been developed to clean the supply air in the outer wall of the building using various sorbents, chemisorbent. Various methods for purifying supply air have been investigated. The isotherms of adsorption of carbon monoxide(II) on activated carbon, shungite, zeolite for calculating the volume of purified gas at constant air temperature were constructed according to the Freundlich equation, and empirical dependences of the concentration of carbon monoxide(II) on time were obtained using various options for purification of the supply air. The research results showed that the best sorbent for cleaning the outside air of carbon monoxide(II) is shungite + silica gel + manganese dioxide + zeolite, the cleaning efficiency was 95.35 %, and the second most effective sorbent for cleaning was the shungite from Karelian field – 86.5 %. The results can be used to clean the internal air of buildings with plenum valves along the height of the facade.

scholarly journals Medical waste management

2021 ◽  
Vol 6 (1) ◽  
pp. 30-36
Author(s):  
Milan Krivokuća
Keyword(s):  
Waste Management ◽  
Waste Disposal ◽  
Reduction Potential ◽  
Waste Treatment ◽  
Medical Waste ◽  
Economic Advantage ◽  
Integrated Method ◽  
Medical Waste Management ◽  
Hierarchical Management

Medical waste management is of great importance for people and the environment. Irresponsible management and classification of medical waste can lead to environmental hazards and cause health risks to both employees and patients. Traditional waste disposal on landfills are the most common form of waste disposal in our country, although the authors see the most efficient incineration solution as a more appropriate method or an integrated method of hierarchical management from the generation stage to waste treatment, which brings economic advantage and risk reduction potential damages. In order to live in harmony with the environment, the problem of waste disposal must be recognized as one of the important tasks of all structures involved in its creation and disposal.

scholarly journals Simulation and Analysis of Various Ventilation Systems Given in an Example in the Same School of Indoor Air Quality

Energies ◽  
2019 ◽  
Vol 12 (15) ◽  
pp. 2845 ◽  
Author(s):  
Katarzyna Gładyszewska-Fiedoruk ◽  
Vasyl Zhelykh ◽  
Andrii Pushchinskyi
Keyword(s):  
Carbon Dioxide ◽  
Air Quality ◽  
Natural Ventilation ◽  
Ventilation System ◽  
Carbon Dioxide Concentration ◽  
Additional Energy ◽  
Exhaust Ventilation ◽  
Building Ventilation ◽  
The Cost

The quality of internal air is one of the factors that affect the pace and quality of knowledge acquisition. Therefore, it is important that classrooms have high quality of air. Using computer simulation, the effect of various building ventilation variants on air quality in classrooms was analyzed. Two criteria were analyzed and six variants of ventilation. The analysis was carried out using the CONTAMW program, used for multi-zone analysis of ventilation and air quality in a building. As an indicator of air quality, the concentration of carbon dioxide in school halls was adopted. The analyses show that natural ventilation is not able to provide proper air exchange. Regular airing of classrooms during breaks can reduce the carbon dioxide concentration to 2500 ppm, however, there is a significant reduction in indoor temperature (even below 10 °C). The best control over the internal environment can be obtained by using a supply–exhaust ventilation system with heat recovery. Obtaining a higher stabilization of ventilation is achieved by supplying additional energy to drive fans, however, this is only a small amount of energy compared to the cost of heat for heating the building (maximum 2%).

Lateral ventilation performance for removal of pulsating buoyant jet under the influence of high-temperature plume

2019 ◽  
Vol 29 (4) ◽  
pp. 543-557 ◽  
Author(s):  
Yi Wang ◽  
Lei Cao ◽  
Yanqiu Huang ◽  
Yingxue Cao
Keyword(s):  
High Temperature ◽  
Ventilation System ◽  
Capture Efficiency ◽  
Buoyant Jet ◽  
Buoyant Jets ◽  
Future Design ◽  
Two Factors ◽  
Building Ventilation ◽  
Ventilation Performance ◽  
Instantaneous Increase

Lateral exhaust systems have commonly been applied to capture polluted buoyant jets in many industrial processes, such as casting and metallurgy. Compared with the normal conditions of design manuals, the capture efficiency of a lateral exhaust hood (LEH) is often weakened by two factors in actual processes: the unsteady buoyant jet released from the operating surface, and the plume formed above a high-temperature workpiece placed between the LEH and the operating surface. In this study, through experiments and numerical simulations, a pulsatile phenomenon was found in the velocity and concentration distribution of the unsteady buoyant jet. Results show that the contaminate escape ratio is pulsatile; it rises with the instantaneous increase in the buoyant jet velocity and gradually decreases to a constant value. This study not only reveals the air distribution of pulsating buoyant jet but also analyses the effect of the pulsating buoyant jet and high-temperature plume on lateral ventilation system capture efficiency and provides a possible guidance for future design of new building ventilation technologies.

scholarly journals Power Substation Construction and Ventilation System Co-Designed Using Particle Swarm Optimization

Energies ◽  
2020 ◽  
Vol 13 (9) ◽  
pp. 2314
Author(s):  
Jau-Woei Perng ◽  
Yi-Chang Kuo ◽  
Yao-Tsung Chang ◽  
Hsi-Hsiang Chang
Keyword(s):  
Numerical Study ◽  
Ventilation System ◽  
Particle Swarm ◽  
Information Modeling ◽  
Particle Swarm Optimizer ◽  
Ansys Fluent ◽  
Power Substation ◽  
Building Information ◽  
Building Ventilation ◽  
Ventilation Performance

This study discusses a numerical study that was developed to optimize the ventilation system in a power substation prior to its installation. We established a multiobjective particle swarm optimizer to identify the best approach for simultaneously improving, first, the ventilation performance considering the most appropriate inlet size and outlet openings and second, the reduction of the synthetic noise of the ventilation and power consumption from the exhaust fan equipment and its operation. The study used building information modeling to construct indoor and outdoor models of the substation building and verified the overall performance using ANSYS FLUENT 18.0 software to simulate the air velocity and air temperature distribution within the building. Results show that the exhaust fan of the B1F cable finishing room and the 23 kV gas insulated switchgear (GIS) room optimize the reduction of horsepower by approximately 1 Hp and 0.5 Hp. The combined noise is reduced by 4 dBA and 2 dBA; the exhaust fan runs for 30 min, and the two equipment rooms can cool down by 2.9 °C and 1.7 °C, respectively. Therefore, it is confirmed that the MOPSO algorithm provides a more energy-efficient and environmentally friendly building ventilation environment.

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