Prediction of the volume flux of the thermal plume above a sitting person

Daria Zukowska; Zbigniew Popiolek; Arsen Melikov

Prediction of the volume flux of the thermal plume above a sitting person

Daria Zukowska
, Zbigniew Popiolek
, Arsen Melikov

Department of Heating, Ventilation and Dust Removal Technology (RIE/RIE1)

Technical University of Denmark

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

1 Citation (Scopus)

Abstract

The paper presents a verification of a relatively simple method of volume flux calculation applied to the asymmetrical thermal plume generated by a sitting person in a condition of an upward piston flow. The method is based on a model of a thermal plume above a point heat source in an unbounded space. The plume volume flux, V̇, can be calculated based on the following equation: V̇ = k_v Q_c^{1/ 3} (z_t - z _v)^5/3. In the equation z_t is the distance from the measuring plane to the top of the heat source and Q_c is the convective part of the heat loss. A value of the entrainment coefficient, k _v, equal to 0.006 was used. The position of the virtual origin of the plume to the heat source top, z_v, was optimized for seven different cases of thermal plumes above a sitting thermal manikin and the best agreement between the measured and calculated volume fluxes, not exceeding ±20%, was obtained for z_v=-1.66 m.

Original language	English
Publication status	Published - 2009
Event	9th International Healthy Buildings Conference and Exhibition, HB 2009 - Syracuse, NY, United States Duration: 13 Sept 2009 → 17 Sept 2009

Conference

Conference	9th International Healthy Buildings Conference and Exhibition, HB 2009
Country/Territory	United States
City	Syracuse, NY
Period	13/09/09 → 17/09/09

Keywords

Asymmetrical thermal plume
Sitting person
Thermal manikin
Volume flux

ASJC Scopus subject areas

Civil and Structural Engineering
Building and Construction

Cite this

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title = "Prediction of the volume flux of the thermal plume above a sitting person",

abstract = "The paper presents a verification of a relatively simple method of volume flux calculation applied to the asymmetrical thermal plume generated by a sitting person in a condition of an upward piston flow. The method is based on a model of a thermal plume above a point heat source in an unbounded space. The plume volume flux, {\.V}, can be calculated based on the following equation: {\.V} = kv Qc1/ 3 (zt - z v)5/3. In the equation zt is the distance from the measuring plane to the top of the heat source and Qc is the convective part of the heat loss. A value of the entrainment coefficient, k v, equal to 0.006 was used. The position of the virtual origin of the plume to the heat source top, zv, was optimized for seven different cases of thermal plumes above a sitting thermal manikin and the best agreement between the measured and calculated volume fluxes, not exceeding ±20\%, was obtained for zv=-1.66 m.",

keywords = "Asymmetrical thermal plume, Sitting person, Thermal manikin, Volume flux",

author = "Daria Zukowska and Zbigniew Popiolek and Arsen Melikov",

year = "2009",

language = "English",

note = "9th International Healthy Buildings Conference and Exhibition, HB 2009 ; Conference date: 13-09-2009 Through 17-09-2009",

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TY - CONF

T1 - Prediction of the volume flux of the thermal plume above a sitting person

AU - Zukowska, Daria

AU - Popiolek, Zbigniew

AU - Melikov, Arsen

PY - 2009

Y1 - 2009

N2 - The paper presents a verification of a relatively simple method of volume flux calculation applied to the asymmetrical thermal plume generated by a sitting person in a condition of an upward piston flow. The method is based on a model of a thermal plume above a point heat source in an unbounded space. The plume volume flux, V̇, can be calculated based on the following equation: V̇ = kv Qc1/ 3 (zt - z v)5/3. In the equation zt is the distance from the measuring plane to the top of the heat source and Qc is the convective part of the heat loss. A value of the entrainment coefficient, k v, equal to 0.006 was used. The position of the virtual origin of the plume to the heat source top, zv, was optimized for seven different cases of thermal plumes above a sitting thermal manikin and the best agreement between the measured and calculated volume fluxes, not exceeding ±20%, was obtained for zv=-1.66 m.

AB - The paper presents a verification of a relatively simple method of volume flux calculation applied to the asymmetrical thermal plume generated by a sitting person in a condition of an upward piston flow. The method is based on a model of a thermal plume above a point heat source in an unbounded space. The plume volume flux, V̇, can be calculated based on the following equation: V̇ = kv Qc1/ 3 (zt - z v)5/3. In the equation zt is the distance from the measuring plane to the top of the heat source and Qc is the convective part of the heat loss. A value of the entrainment coefficient, k v, equal to 0.006 was used. The position of the virtual origin of the plume to the heat source top, zv, was optimized for seven different cases of thermal plumes above a sitting thermal manikin and the best agreement between the measured and calculated volume fluxes, not exceeding ±20%, was obtained for zv=-1.66 m.

KW - Asymmetrical thermal plume

KW - Sitting person

KW - Thermal manikin

KW - Volume flux

UR - https://www.scopus.com/pages/publications/84872658533

M3 - Paper

AN - SCOPUS:84872658533

T2 - 9th International Healthy Buildings Conference and Exhibition, HB 2009

Y2 - 13 September 2009 through 17 September 2009

ER -

Prediction of the volume flux of the thermal plume above a sitting person

Abstract

Conference

Keywords

ASJC Scopus subject areas

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