Initial study of an alternative technology aimed at measuring and controlling the flow rate in air conditioning ducts

Author:

Testi Andrei1ORCID,Marcelino Marcio Abud12,Lotufo Francisco Antonio3,de Souza Teófilo Miguel3

Affiliation:

1. Mechanical Engineering Post Graduation Department, University of Taubate – UNITAU, Taubate, Brazil

2. Energy Department, Sao Paulo State University – UNESP, Sao Paulo, Brazil

3. Electrical Engineering Department, Sao Paulo State University – UNESP, Sao Paulo, Brazil

Abstract

This paper states that there might have around 1000 small size business jets (until nine occupants) flying across the world equipped with flow control and regulating shut-off valves that uses hot wire anemometer devices to regulate massflow rate from the bleed airflow to supply the air-conditioning and pressurization systems. However, these valves present low reliability in the field. The purpose of this paper is to evaluate the implications of a flow control and regulating shut-off valve with a non-intrusive airflow measurer device under the perspective of fluid mechanics. The Venturi technology that is commonly used technology, given its construction simplicity, precision, and broad use in the industry, is selected to substitute the flow control and regulating shut-off valves with hot wire anemometer of the mentioned small size business jets applications. This paper has adopted a numeric simulation approach utilizing the ANSYS-CFX computational fluid dynamics software to verify both the differential pressure at the Venturi device and its correspondent mass flow rate to supply the air conditioning systems of some small size business jets, considering the mass-flow rate as requested by the FAA certification requirement (0.55 lb/min per occupant). This paper shows that a mass-flow rate control and regulating shut-off valve with a Venturi device, of 1 inch and β of 0.67, is compliant with the minimum fresh air flow requested by the FAA certification requirement to operate in some small size business jets. Besides that, the software ANSYS-CFX is also effective to support the engineering analysis of flow field characteristics inherent to the applications of internal compressible flow. The numeric simulation utilizing the ANSYS-CFX computational fluid dynamics software outlined herein can lay the basis for further research related to the design of a flow control and regulating shut-off valves with a Venturi device.

Publisher

SAGE Publications

Subject

Mechanical Engineering

Reference28 articles.

1. Practical considerations for validity of constant temperature anemometer flow measurements in industrial applications

2. SAE AIR 1168/7: 2004. Pressurization.

3. Tebib S, Sanjosé M, Arroyo PC, et al. CFD analysis of an outflow butterfly valve. Department of Mechanical Engineering, University of Sherbrooke (UdeS), 2500, boulevard de l’université Sherbrooke (Québec) J1K 2R1 2 Liebherr-Aerospace Toulouse (LTS), Toulouse, France, 2018.

Cited by 1 articles. 订阅此论文施引文献 订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献

1. Experimental Study on the Flow Field Characteristics of Vertical Venturi Valves;2024 3rd International Conference on Innovations and Development of Information Technologies and Robotics (IDITR);2024-05-23

同舟云学术

1.学者识别学者识别

2.学术分析学术分析

3.人才评估人才评估

"同舟云学术"是以全球学者为主线,采集、加工和组织学术论文而形成的新型学术文献查询和分析系统,可以对全球学者进行文献检索和人才价值评估。用户可以通过关注某些学科领域的顶尖人物而持续追踪该领域的学科进展和研究前沿。经过近期的数据扩容,当前同舟云学术共收录了国内外主流学术期刊6万余种,收集的期刊论文及会议论文总量共计约1.5亿篇,并以每天添加12000余篇中外论文的速度递增。我们也可以为用户提供个性化、定制化的学者数据。欢迎来电咨询!咨询电话:010-8811{复制后删除}0370

www.globalauthorid.com

TOP

Copyright © 2019-2024 北京同舟云网络信息技术有限公司
京公网安备11010802033243号  京ICP备18003416号-3