Ventilation of small factory units

Fletcher, B.; Johnson, A.E.

doi:10.1016/0167-6105(92)90381-j

Cited by 3 publications

(4 citation statements)

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“…Wind speed was measured and infiltration rate was calculated. In this case the air change rate was proportional to the wind speed and the amount of air change rate per hour was 0.49 -0.88 [44].…”

Section: Case Studies In Industrial Ventilation Systemmentioning

confidence: 96%

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Energy benchmarking and ventilation related energy saving potentials for small and medium sized enterprises in Greater Toronto area

Ahmed¹

2021

Preprint

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In the past several years, energy benchmarking has become a very popular tool for the estimation of energy consumption and overall performance of buildings. More recently, industrial energy benchmarking has attracted attention all over the world, due to ever-increasing energy demands. Industrial facility ventilation is one of the most overlooked components in terms of overall industrial sector energy consumption. Therefore, a proper assessment and manage of energy can lead to a great reduction of energy usage, as shown in different small and medium industrial plant case studies. Although several articles and reports that have previously discussed ventilation analysis of industrial facilities in Ontario, energy benchmarking has never been conducted on ventilation. Therefore, the purpose of this thesis is to present a detailed energy benchmarking method and analyzing energy consumption and savings based on ventilation energy consumption. An energy benchmarking analysis was conducted in different small to medium sized facilities in the Greater Toronto Area (GTA), based on ventilation analysis. It was determined from the analysis that the typical and inefficient performing facilities can reduce average of 9% of their total natural gas consumption from total ventilation, 25% from transmission heat loss and 10% from infiltration loss compared to the top performing facility among all the audited facilities in this study.

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Section: Case Studies In Industrial Ventilation Systemmentioning

confidence: 96%

“…Ventilation rate was measured by Fletcher [44] in a small factory unit. Tracer gas technique was used in different units of the factory to measure the infiltration rate when mechanical ventilation was turned off.…”

Section: Case Studies In Industrial Ventilation Systemmentioning

confidence: 99%

Energy benchmarking and ventilation related energy saving potentials for small and medium sized enterprises in Greater Toronto area

Ahmed¹

2021

Preprint

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“…Hence, ventilation is one of the most important elements concerning the improvement of thermal conditions inside factories and it could reduce pollution [7]. Thus, it plays a significant role in improving the quality of the industrial environment as a whole and contributes to avoiding many damages to workers and machines [8]. Notably, mechanical ventilation methods are the most commonly used systems in factories [9], despite there Sustainability 2021, 13, 10267 2 of 13 being several types of mechanical ventilation systems that differ in terms of air distribution.…”

Section: Introductionmentioning

confidence: 99%

A Comparative Study for Forced Ventilation Systems in Industrial Buildings to Improve the Workers’ Thermal Comfort

et al. 2021

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The appropriate ventilation for factory spaces with regard to volume flow rate and air velocity inside the factory is one of the most important factors in the improvement of the thermal comfort of workers and in the reduction of the percentage of pollution they are exposed to, which in turn helps to improve the work environment and increase productivity. It also could improve the performance of machines. Hence, overheating can cause various problems and malfunctions. In this study, three types of mechanical ventilation systems are compared: the wall fan extract ventilation system, the roof fan extract ventilation system, and the spot cooling system. The Ansys software has been used to conduct the computational fluid dynamics (CFD) simulations for the different cases and the ventilation effectiveness factor (VEF) has been used to compare the performances of the three systems. The ventilation factor notably relies on the temperature distribution produced through the modeling and the results show that the most optimal system that can be used for similar factory spaces is the forced ventilation system. Finally, it is also the best in terms of energy consumption, despite the increase in the initial cost of its installation.

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“…To simulate dust emission from machines there may be used test dust or tracer gases having aerodynamic parameters close to real pollution parameters. The study of pollutants emission from various processes using tracer gases carried out in Poland [5][6][7] and in the world [8][9][10][11][12][13][14][15][16][17][18][19][20][21] . Although the use of test dust better reflects real conditions of pollution emission, the tests based on tracer gases enable to make measurements with higher accuracy because these tracers do not generally exist as a real air pollution which may, however, take place in case of test dusts.…”

Section: Impact Of Air Distribution On Efficiency Of Dust Capture Fromentioning

confidence: 99%

Impact of Air Distribution on Efficiency of Dust Capture from Metal Grinding ―Bench Test Method

Jankowski

2011

Ind Health

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According to the Machinery Directive 2006/42/EC, one of the essential requirements relating to occupational safety and health hazards is to prevent dust pollution emitted by machinery during the implementation processes. Research on evaluation of emissions from machinery, according to the method of test bench using tracer gases, are currently being conducted in CIOP-PIB. This article presents some aspects of dust emission and efficiency of local exhaust ventilation (LEV) during metal grinding. Studies were performed with 10 sources of dust emissions during grinding. To evaluate the pollutants emission in the process of grinding metal products sulfur hexafluoride (SF 6 ) was selected as a tracer gas. The results show that wherever dust is emitted, the LEV should be supported by the general ventilation. Ensure good interaction between all elements of modifying the air flow and the spread of pollutants in the surroundings of the LEV is essential to effective protection of human working zone against pollutants. We used five variants of ventilation: ventilation turned off, the LEV, one-way general ventilation, mixed general ventilation and displacement general ventilation. An increase in the efficiency of dust capture depending on the source of emission by 2.5-14% was observed. This confirms that characteristics of flow resulting from the operation of ventilation is important in the spread of pollutants in the room.

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Ventilation of small factory units

Cited by 3 publications

References 1 publication

Energy benchmarking and ventilation related energy saving potentials for small and medium sized enterprises in Greater Toronto area

Energy benchmarking and ventilation related energy saving potentials for small and medium sized enterprises in Greater Toronto area

A Comparative Study for Forced Ventilation Systems in Industrial Buildings to Improve the Workers’ Thermal Comfort

Impact of Air Distribution on Efficiency of Dust Capture from Metal Grinding ―Bench Test Method

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