Study of the Human Breathing Flow Profile in a Room with three Different Ventilation Strategies

Ines Olmedo, Peter V. Nielsen, Manuel Ruiz de Adana, Piotr Grzelecki, Rasmus Lund Jensen

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

3 Citations (Scopus)

Abstract

This study investigates the characteristics of human exhalation through the mouth with three different ventilation strategies: displacement ventilation, mixing ventilation and without ventilation. Experiments were conducted with one breathing thermal manikin in a full scale test room where the exhalation airflow was analyzed. In order to simulate the gaseous exhaled substances in human breathing, N2O was used as a tracer gas. The concentration of N2O and the velocity of the exhaled flow were measured in the center line of the exhalation flow. The velocity decay of the exhalation flow versus distance was analyzed for the three ventilation strategies. The relationship between gas concentration values and distance from the manikin was also examined. The measurements show distribution system. Two equations could be applied to describe the relationship between distance from the manikin and, respectively, peak velocity values and maximum mean gas-concentration values.
Original languageEnglish
Title of host publicationASHRAE’S IAQ 2010 : airborne infection control- ventilation, IAO & energy
Number of pages12
Place of PublicationKuala Lumpur
PublisherAmerican Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.
Publication date2010
Pages102-113
ISBN (Electronic)978-1-936504-04-6
Publication statusPublished - 2010
EventASHRAE IAQ Conference 2010 - Kuala Lumpur, Malaysia
Duration: 10 Nov 201012 Nov 2010

Conference

ConferenceASHRAE IAQ Conference 2010
CountryMalaysia
CityKuala Lumpur
Period10/11/201012/11/2010

Fingerprint

ventilation
gas
distribution system
airflow
tracer
experiment
concentration (value)

Bibliographical note

Published on a CD.

Keywords

  • Exhalation Flow
  • Human Breathing
  • Velocity Decay
  • Cross-Infection
  • Thermal Manikin

Cite this

Olmedo, I., Nielsen, P. V., de Adana, M. R., Grzelecki, P., & Jensen, R. L. (2010). Study of the Human Breathing Flow Profile in a Room with three Different Ventilation Strategies. In ASHRAE’S IAQ 2010: airborne infection control- ventilation, IAO & energy (pp. 102-113). Kuala Lumpur: American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc..
Olmedo, Ines ; Nielsen, Peter V. ; de Adana, Manuel Ruiz ; Grzelecki, Piotr ; Jensen, Rasmus Lund. / Study of the Human Breathing Flow Profile in a Room with three Different Ventilation Strategies. ASHRAE’S IAQ 2010: airborne infection control- ventilation, IAO & energy. Kuala Lumpur : American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc., 2010. pp. 102-113
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title = "Study of the Human Breathing Flow Profile in a Room with three Different Ventilation Strategies",
abstract = "This study investigates the characteristics of human exhalation through the mouth with three different ventilation strategies: displacement ventilation, mixing ventilation and without ventilation. Experiments were conducted with one breathing thermal manikin in a full scale test room where the exhalation airflow was analyzed. In order to simulate the gaseous exhaled substances in human breathing, N2O was used as a tracer gas. The concentration of N2O and the velocity of the exhaled flow were measured in the center line of the exhalation flow. The velocity decay of the exhalation flow versus distance was analyzed for the three ventilation strategies. The relationship between gas concentration values and distance from the manikin was also examined. The measurements show distribution system. Two equations could be applied to describe the relationship between distance from the manikin and, respectively, peak velocity values and maximum mean gas-concentration values.",
keywords = "Exhalation Flow, Human Breathing, Velocity Decay, Cross-Infection, Thermal Manikin, Exhalation Flow, Human Breathing, Velocity Decay, Cross-Infection, Thermal Manikin",
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publisher = "American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.",

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Olmedo, I, Nielsen, PV, de Adana, MR, Grzelecki, P & Jensen, RL 2010, Study of the Human Breathing Flow Profile in a Room with three Different Ventilation Strategies. in ASHRAE’S IAQ 2010: airborne infection control- ventilation, IAO & energy. American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc., Kuala Lumpur, pp. 102-113, Kuala Lumpur, Malaysia, 10/11/2010.

Study of the Human Breathing Flow Profile in a Room with three Different Ventilation Strategies. / Olmedo, Ines ; Nielsen, Peter V.; de Adana, Manuel Ruiz; Grzelecki, Piotr; Jensen, Rasmus Lund.

ASHRAE’S IAQ 2010: airborne infection control- ventilation, IAO & energy. Kuala Lumpur : American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc., 2010. p. 102-113.

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

TY - GEN

T1 - Study of the Human Breathing Flow Profile in a Room with three Different Ventilation Strategies

AU - Olmedo, Ines

AU - Nielsen, Peter V.

AU - de Adana, Manuel Ruiz

AU - Grzelecki, Piotr

AU - Jensen, Rasmus Lund

N1 - Published on a CD.

PY - 2010

Y1 - 2010

N2 - This study investigates the characteristics of human exhalation through the mouth with three different ventilation strategies: displacement ventilation, mixing ventilation and without ventilation. Experiments were conducted with one breathing thermal manikin in a full scale test room where the exhalation airflow was analyzed. In order to simulate the gaseous exhaled substances in human breathing, N2O was used as a tracer gas. The concentration of N2O and the velocity of the exhaled flow were measured in the center line of the exhalation flow. The velocity decay of the exhalation flow versus distance was analyzed for the three ventilation strategies. The relationship between gas concentration values and distance from the manikin was also examined. The measurements show distribution system. Two equations could be applied to describe the relationship between distance from the manikin and, respectively, peak velocity values and maximum mean gas-concentration values.

AB - This study investigates the characteristics of human exhalation through the mouth with three different ventilation strategies: displacement ventilation, mixing ventilation and without ventilation. Experiments were conducted with one breathing thermal manikin in a full scale test room where the exhalation airflow was analyzed. In order to simulate the gaseous exhaled substances in human breathing, N2O was used as a tracer gas. The concentration of N2O and the velocity of the exhaled flow were measured in the center line of the exhalation flow. The velocity decay of the exhalation flow versus distance was analyzed for the three ventilation strategies. The relationship between gas concentration values and distance from the manikin was also examined. The measurements show distribution system. Two equations could be applied to describe the relationship between distance from the manikin and, respectively, peak velocity values and maximum mean gas-concentration values.

KW - Exhalation Flow

KW - Human Breathing

KW - Velocity Decay

KW - Cross-Infection

KW - Thermal Manikin

KW - Exhalation Flow

KW - Human Breathing

KW - Velocity Decay

KW - Cross-Infection

KW - Thermal Manikin

M3 - Article in proceeding

SP - 102

EP - 113

BT - ASHRAE’S IAQ 2010

PB - American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc.

CY - Kuala Lumpur

ER -

Olmedo I, Nielsen PV, de Adana MR, Grzelecki P, Jensen RL. Study of the Human Breathing Flow Profile in a Room with three Different Ventilation Strategies. In ASHRAE’S IAQ 2010: airborne infection control- ventilation, IAO & energy. Kuala Lumpur: American Society of Heating, Refrigerating and Air-Conditioning Engineers, Inc. 2010. p. 102-113