Urban-scale SALSCS, part I: Experimental evaluation and numerical modeling of a demonstration unit

Qingfeng Cao; Thomas H. Kuehn; Lian Shen; Sheng Chieh Chen; Ningning Zhang; Yu Huang; Junji Cao; David Y Pui

doi:10.4209/aaqr.2018.06.0238

Urban-scale SALSCS, part I: Experimental evaluation and numerical modeling of a demonstration unit

Qingfeng Cao, Thomas H. Kuehn, Lian Shen, Sheng Chieh Chen, Ningning Zhang, Yu Huang, Junji Cao, David Y Pui

Mechanical Engineering

Research output: Contribution to journal › Article › peer-review

24 Scopus citations

Abstract

A demonstration unit for the Solar-Assisted Large-Scale Cleaning System (SALSCS), with a solar collector 43 × 60 m² in horizontal dimensions and a tower 60 m in height, was built in Xi’an, China, to study its effectiveness in terms of urban air pollution remediation. To simulate an urban-scale SALSCS with dimensions ranging 10–120 m that was proposed for installation on urban blocks, we first performed experimental measurements on the demonstration unit and used the experimental data to validate a numerical model that we developed. This paper presents the field measurements conducted during three days in Jan. 2017 in Xi’an. The experimental and numerical results of the system flow rate and temperature showed good agreement for six of the eight measurement cases, with average discrepancies of 1.63 m³ s^–1 for the flow rate and 0.78°C for the temperature. Larger discrepancies for the other two cases were observed, and the reasons were analyzed. During the measurements, the filtration efficiency of the filter media installed in the north section of the system with regard to PM_2.5 was evaluated to be 73.5%. The validated numerical model was applied to study the performance characteristics of the urban-scale SALSCS, and these results will be presented in Part II.

Original language	English (US)
Pages (from-to)	2865-2878
Number of pages	14
Journal	Aerosol and Air Quality Research
Volume	18
Issue number	11
DOIs	https://doi.org/10.4209/aaqr.2018.06.0238
State	Published - Nov 2018

Bibliographical note

Funding Information:
The authors would like to thank Professor Wojciech Lipiński from the Australian National University and Mr. Charles Lo from the University of Minnesota, respectively, for their suggestions on this work. Our numerical simulations were performed on the High-Performance Computing (HPC) platforms of the Minnesota Supercomputing Institute (MSI), which is also gratefully acknowledged. We also would like to thank the undergraduate students at IEECAS in Xi’an for their assistance on the field measurements conducted at the site of the SALSCS demonstration unit.

Publisher Copyright:
Copyright © Taiwan Association for Aerosol Research.

Keywords

Air pollution remediation
Experimental measurement
Model validation
SALSCS demonstration unit
Solar chimney

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.4209/aaqr.2018.06.0238

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@article{af57ad1b4eda49bf86204ab8466e78c6,

title = "Urban-scale SALSCS, part I: Experimental evaluation and numerical modeling of a demonstration unit",

abstract = "A demonstration unit for the Solar-Assisted Large-Scale Cleaning System (SALSCS), with a solar collector 43 × 60 m2 in horizontal dimensions and a tower 60 m in height, was built in Xi{\textquoteright}an, China, to study its effectiveness in terms of urban air pollution remediation. To simulate an urban-scale SALSCS with dimensions ranging 10–120 m that was proposed for installation on urban blocks, we first performed experimental measurements on the demonstration unit and used the experimental data to validate a numerical model that we developed. This paper presents the field measurements conducted during three days in Jan. 2017 in Xi{\textquoteright}an. The experimental and numerical results of the system flow rate and temperature showed good agreement for six of the eight measurement cases, with average discrepancies of 1.63 m3 s–1 for the flow rate and 0.78°C for the temperature. Larger discrepancies for the other two cases were observed, and the reasons were analyzed. During the measurements, the filtration efficiency of the filter media installed in the north section of the system with regard to PM2.5 was evaluated to be 73.5%. The validated numerical model was applied to study the performance characteristics of the urban-scale SALSCS, and these results will be presented in Part II.",

keywords = "Air pollution remediation, Experimental measurement, Model validation, SALSCS demonstration unit, Solar chimney",

author = "Qingfeng Cao and Kuehn, {Thomas H.} and Lian Shen and Chen, {Sheng Chieh} and Ningning Zhang and Yu Huang and Junji Cao and Pui, {David Y}",

note = "Funding Information: The authors would like to thank Professor Wojciech Lipi{\'n}ski from the Australian National University and Mr. Charles Lo from the University of Minnesota, respectively, for their suggestions on this work. Our numerical simulations were performed on the High-Performance Computing (HPC) platforms of the Minnesota Supercomputing Institute (MSI), which is also gratefully acknowledged. We also would like to thank the undergraduate students at IEECAS in Xi{\textquoteright}an for their assistance on the field measurements conducted at the site of the SALSCS demonstration unit. Publisher Copyright: Copyright {\textcopyright} Taiwan Association for Aerosol Research.",

year = "2018",

month = nov,

doi = "10.4209/aaqr.2018.06.0238",

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volume = "18",

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AU - Cao, Qingfeng

AU - Kuehn, Thomas H.

AU - Shen, Lian

AU - Chen, Sheng Chieh

AU - Zhang, Ningning

AU - Huang, Yu

AU - Cao, Junji

AU - Pui, David Y

N1 - Funding Information: The authors would like to thank Professor Wojciech Lipiński from the Australian National University and Mr. Charles Lo from the University of Minnesota, respectively, for their suggestions on this work. Our numerical simulations were performed on the High-Performance Computing (HPC) platforms of the Minnesota Supercomputing Institute (MSI), which is also gratefully acknowledged. We also would like to thank the undergraduate students at IEECAS in Xi’an for their assistance on the field measurements conducted at the site of the SALSCS demonstration unit. Publisher Copyright: Copyright © Taiwan Association for Aerosol Research.

PY - 2018/11

Y1 - 2018/11

N2 - A demonstration unit for the Solar-Assisted Large-Scale Cleaning System (SALSCS), with a solar collector 43 × 60 m2 in horizontal dimensions and a tower 60 m in height, was built in Xi’an, China, to study its effectiveness in terms of urban air pollution remediation. To simulate an urban-scale SALSCS with dimensions ranging 10–120 m that was proposed for installation on urban blocks, we first performed experimental measurements on the demonstration unit and used the experimental data to validate a numerical model that we developed. This paper presents the field measurements conducted during three days in Jan. 2017 in Xi’an. The experimental and numerical results of the system flow rate and temperature showed good agreement for six of the eight measurement cases, with average discrepancies of 1.63 m3 s–1 for the flow rate and 0.78°C for the temperature. Larger discrepancies for the other two cases were observed, and the reasons were analyzed. During the measurements, the filtration efficiency of the filter media installed in the north section of the system with regard to PM2.5 was evaluated to be 73.5%. The validated numerical model was applied to study the performance characteristics of the urban-scale SALSCS, and these results will be presented in Part II.

AB - A demonstration unit for the Solar-Assisted Large-Scale Cleaning System (SALSCS), with a solar collector 43 × 60 m2 in horizontal dimensions and a tower 60 m in height, was built in Xi’an, China, to study its effectiveness in terms of urban air pollution remediation. To simulate an urban-scale SALSCS with dimensions ranging 10–120 m that was proposed for installation on urban blocks, we first performed experimental measurements on the demonstration unit and used the experimental data to validate a numerical model that we developed. This paper presents the field measurements conducted during three days in Jan. 2017 in Xi’an. The experimental and numerical results of the system flow rate and temperature showed good agreement for six of the eight measurement cases, with average discrepancies of 1.63 m3 s–1 for the flow rate and 0.78°C for the temperature. Larger discrepancies for the other two cases were observed, and the reasons were analyzed. During the measurements, the filtration efficiency of the filter media installed in the north section of the system with regard to PM2.5 was evaluated to be 73.5%. The validated numerical model was applied to study the performance characteristics of the urban-scale SALSCS, and these results will be presented in Part II.

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KW - Model validation

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KW - Solar chimney

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JO - Aerosol and Air Quality Research

JF - Aerosol and Air Quality Research

IS - 11

ER -

Urban-scale SALSCS, part I: Experimental evaluation and numerical modeling of a demonstration unit

Abstract

Bibliographical note

Keywords

UN SDGs

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