EXPERIMENTAL INVESTIGATION OF HYDRODYNAMICS AND HEAT TRANSFER CHARACTERISTICS OF TWO-PHASE GAS/LIQUID MIST FLOW IN TANDEM ARRANGED HEATED SPHERES

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EXPERIMENTAL INVESTIGATION OF HYDRODYNAMICS AND HEAT TRANSFER CHARACTERISTICS OF TWO-PHASE GAS/LIQUID MIST FLOW IN TANDEM ARRANGED HEATED SPHERES. / Abed Akram H., ; Shcheklein, S. Е. ; Pakhaluev, V. M. .
в: Вестник Южно-Уральского государственного университета. Серия: Энергетика, Том 19, № 2, 2019, стр. 14-21.

Результаты исследований: Вклад в журнал › Статья › Рецензирование

BibTeX

@article{54e39796f4214aaf9e96461470951abd,

title = "EXPERIMENTAL INVESTIGATION OF HYDRODYNAMICS AND HEAT TRANSFER CHARACTERISTICS OF TWO-PHASE GAS/LIQUID MIST FLOW IN TANDEM ARRANGED HEATED SPHERES",

abstract = "The article presents an experimental investigation, performed to evaluate the hydrodynamics and heat transfer characteristics in tandem arranged heated rows packed inside cylindrical channel, which use air as well as air/water mist flows as operational medium. The average surface temperature has been recorded under various air main flow, water mist rate, surface heat flux and constant pitch ratio (y/d = constant). The heat transfer rate was found to increase with the water mist rate and decrease with the surface temperature. Heat transfer rate was enhanced over that for the single-phase air flow as a result of water mist evaporation and direct heat conduction by the water film generated on the heated surfaces. Overall, the heat transfer coefficient was enhanced by about 140%, 42%, and 10% respectively for the upper, middle and lower heated rows by suspending (111.68 kg m-2 hr-1) water mist rate. The frictional resistance for air/water mist flow is found to exceed that in the single-phase air flow. Compared to each water mist rate over the investigated range, the percentage enhancement in the overall heat transfer performance factor of around 116%, 35%, and 10% respectively for all the heated rows under the highest water mist rate. New experimental results obtained can be used in the development of heat exchanger modules design processes.",

author = "{Abed Akram H.} and Shcheklein, {S. Е.} and Pakhaluev, {V. M.}",

year = "2019",

doi = "10.14529/power190202",

language = "English",

volume = "19",

pages = "14--21",

journal = "Вестник Южно-Уральского государственного университета. Серия: Энергетика",

issn = "1990-8512",

publisher = "Южно-Уральский государственный университет (национальный исследовательский университет)",

number = "2",

}

RIS

TY - JOUR

T1 - EXPERIMENTAL INVESTIGATION OF HYDRODYNAMICS AND HEAT TRANSFER CHARACTERISTICS OF TWO-PHASE GAS/LIQUID MIST FLOW IN TANDEM ARRANGED HEATED SPHERES

AU - Abed Akram H., null

AU - Shcheklein, S. Е.

AU - Pakhaluev, V. M.

PY - 2019

Y1 - 2019

N2 - The article presents an experimental investigation, performed to evaluate the hydrodynamics and heat transfer characteristics in tandem arranged heated rows packed inside cylindrical channel, which use air as well as air/water mist flows as operational medium. The average surface temperature has been recorded under various air main flow, water mist rate, surface heat flux and constant pitch ratio (y/d = constant). The heat transfer rate was found to increase with the water mist rate and decrease with the surface temperature. Heat transfer rate was enhanced over that for the single-phase air flow as a result of water mist evaporation and direct heat conduction by the water film generated on the heated surfaces. Overall, the heat transfer coefficient was enhanced by about 140%, 42%, and 10% respectively for the upper, middle and lower heated rows by suspending (111.68 kg m-2 hr-1) water mist rate. The frictional resistance for air/water mist flow is found to exceed that in the single-phase air flow. Compared to each water mist rate over the investigated range, the percentage enhancement in the overall heat transfer performance factor of around 116%, 35%, and 10% respectively for all the heated rows under the highest water mist rate. New experimental results obtained can be used in the development of heat exchanger modules design processes.

AB - The article presents an experimental investigation, performed to evaluate the hydrodynamics and heat transfer characteristics in tandem arranged heated rows packed inside cylindrical channel, which use air as well as air/water mist flows as operational medium. The average surface temperature has been recorded under various air main flow, water mist rate, surface heat flux and constant pitch ratio (y/d = constant). The heat transfer rate was found to increase with the water mist rate and decrease with the surface temperature. Heat transfer rate was enhanced over that for the single-phase air flow as a result of water mist evaporation and direct heat conduction by the water film generated on the heated surfaces. Overall, the heat transfer coefficient was enhanced by about 140%, 42%, and 10% respectively for the upper, middle and lower heated rows by suspending (111.68 kg m-2 hr-1) water mist rate. The frictional resistance for air/water mist flow is found to exceed that in the single-phase air flow. Compared to each water mist rate over the investigated range, the percentage enhancement in the overall heat transfer performance factor of around 116%, 35%, and 10% respectively for all the heated rows under the highest water mist rate. New experimental results obtained can be used in the development of heat exchanger modules design processes.

UR - https://elibrary.ru/item.asp?id=38523445

U2 - 10.14529/power190202

DO - 10.14529/power190202

M3 - Article

VL - 19

SP - 14

EP - 21

JO - Вестник Южно-Уральского государственного университета. Серия: Энергетика

JF - Вестник Южно-Уральского государственного университета. Серия: Энергетика

SN - 1990-8512

IS - 2

ER -

ID: 10345770