Influence of the scheme of air exchange organization in the room on the efficiency of the air-jet hood of the heat treatment chamber

Tatyana Zhilkina,Vladislav Pankov,Viktor Pukhkal,V Breskich,A Zheltenkov,Y Dreizis

doi:10.1051/e3sconf/202022403026

Abstract

Local exhaust ventilation allows maximizing the localization of hazards with minimum values of air exchange in the room. For the study, the design of a local exhaust in the form of an air-jet hood at an open doorway of the UKM Classic M 2005 chamber by Mauting was adopted. Geometric models have been developed, including a heat treatment chamber, a room from which the chamber is loaded, a supply and exhaust hood over the door from the chamber to the room, and a supply air duct with air distributing devices. The results of a computational experiment on modeling the operation of the local exhaust ventilation system of the heat treatment chamber are presented. The STAR-CCM+ software package was used as a calculation program. The calculation results were analyzed. The influence of the air exchange scheme (location of the supply devices) in the room on the efficiency of the local exhaust devices (supply and exhaust hood) has been established.

Highlights

The organization of air exchange is understood as the relative position of the places for supply and removal of ventilation air in the room, depending on the location of sources of harmful emissions and workplaces [1]
When determining the characteristics of local exhaust devices, the influence of the air supply scheme is not taken into account [1,2,3,4,5,6]
Are the data of the most effective options: supply air flow rate into the room - 3780 m3/h; supply air flow rate in the supply and exhaust hood through the holes for concentrated supply - 720 m3/h; the flow rate of air removed through the hood structure - 4500 m3/h

Summary

Introduction

The organization of air exchange is understood as the relative position of the places for supply and removal of ventilation air in the room, depending on the location of sources of harmful emissions and workplaces [1]. In works [2, 3], the characteristics of local exhaust devices are considered in order to optimize air exchange. When determining the characteristics of local exhaust devices, the influence of the air supply scheme is not taken into account [1,2,3,4,5,6]. The purpose of this study is to assess the influence of the scheme of air supply into the room on the efficiency of local exhaust devices. Open-type exhaust units were adopted - hoods located outside the source of harmful emissions, i.e. above or on the side of it, in particular, air-jet hoods (supply and exhaust hoods)

Objectives

Methods

Results

Conclusion