Exposure to metabolic CO2 in a room with different air distributions

Tereza  Snaselova; Mariya Petrova Bivolarova; Detelin G. Markov; Arsen  Melikov

Exposure to metabolic CO₂ in a room with different air distributions

Tereza Snaselova, Mariya Petrova Bivolarova, Detelin G. Markov, Arsen Melikov^*

^*Corresponding author for this work

Research output: Contribution to conference › Paper › Research › peer-review

Abstract

It has been reported that CO₂ concentration in the inhaled air may have negative impact on performance of occupants. The limits for inhaled CO₂concentration are specified in some building regulations. In the current practice, CO₂ concentration measured in the exhaust or at the walls is used to assess the CO₂ exposure. However, the CO₂ exposure is affected by reinhalation of exhaled air.
In the present study, the impact of different air distribution methods and type of diffusers on the CO₂ concentration in the inhaled air was investigated. The results reveal that the CO₂ concentration in the inhaled air is substantially higher than in the exhaust air. CO₂ concentration measurements at the exhaust are not appropriate to assess performance of room air distribution and ventilation control with regard to CO₂ exposure of occupants.

Original language	English
Publication date	2021
Number of pages	6
Publication status	Published - 2021
Event	16th Conference of the International Society of Indoor Air Quality & Climate - Online Duration: 1 Nov 2020 → 4 Nov 2020 Conference number: 16

Conference

Conference	16th Conference of the International Society of Indoor Air Quality & Climate
Number	16
Location	Online
Period	01/11/2020 → 04/11/2020

Keywords

CO2 exposure control
Mixing air distribution
Displacement air distribution
Demand control ventilation
Flow rate design

OpenUrl availability

Full text

Cite this

@conference{d421fa9f253c41ea94c45d534961e361,

title = "Exposure to metabolic CO2 in a room with different air distributions",

abstract = "It has been reported that CO2 concentration in the inhaled air may have negative impact on performance of occupants. The limits for inhaled CO2 concentration are specified in some building regulations. In the current practice, CO2 concentration measured in the exhaust or at the walls is used to assess the CO2 exposure. However, the CO2 exposure is affected by reinhalation of exhaled air. In the present study, the impact of different air distribution methods and type of diffusers on the CO2 concentration in the inhaled air was investigated. The results reveal that the CO2 concentration in the inhaled air is substantially higher than in the exhaust air. CO2 concentration measurements at the exhaust are not appropriate to assess performance of room air distribution and ventilation control with regard to CO2 exposure of occupants.",

keywords = "CO2 exposure control, Mixing air distribution, Displacement air distribution, Demand control ventilation, Flow rate design",

author = "Tereza Snaselova and Bivolarova, {Mariya Petrova} and Markov, {Detelin G.} and Arsen Melikov",

year = "2021",

language = "English",

note = " 16th Conference of the International Society of Indoor Air Quality & Climate , Indoor Air 2020 ; Conference date: 01-11-2020 Through 04-11-2020",

}

TY - CONF

T1 - Exposure to metabolic CO2 in a room with different air distributions

AU - Snaselova, Tereza

AU - Bivolarova, Mariya Petrova

AU - Markov, Detelin G.

AU - Melikov, Arsen

N1 - Conference code: 16

PY - 2021

Y1 - 2021

N2 - It has been reported that CO2 concentration in the inhaled air may have negative impact on performance of occupants. The limits for inhaled CO2 concentration are specified in some building regulations. In the current practice, CO2 concentration measured in the exhaust or at the walls is used to assess the CO2 exposure. However, the CO2 exposure is affected by reinhalation of exhaled air. In the present study, the impact of different air distribution methods and type of diffusers on the CO2 concentration in the inhaled air was investigated. The results reveal that the CO2 concentration in the inhaled air is substantially higher than in the exhaust air. CO2 concentration measurements at the exhaust are not appropriate to assess performance of room air distribution and ventilation control with regard to CO2 exposure of occupants.

AB - It has been reported that CO2 concentration in the inhaled air may have negative impact on performance of occupants. The limits for inhaled CO2 concentration are specified in some building regulations. In the current practice, CO2 concentration measured in the exhaust or at the walls is used to assess the CO2 exposure. However, the CO2 exposure is affected by reinhalation of exhaled air. In the present study, the impact of different air distribution methods and type of diffusers on the CO2 concentration in the inhaled air was investigated. The results reveal that the CO2 concentration in the inhaled air is substantially higher than in the exhaust air. CO2 concentration measurements at the exhaust are not appropriate to assess performance of room air distribution and ventilation control with regard to CO2 exposure of occupants.

KW - CO2 exposure control

KW - Mixing air distribution

KW - Displacement air distribution

KW - Demand control ventilation

KW - Flow rate design

M3 - Paper

T2 - 16th Conference of the International Society of Indoor Air Quality & Climate

Y2 - 1 November 2020 through 4 November 2020

ER -