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Sustainability 2015, 7(9), 12672-12692; doi:10.3390/su70912672

Improvement of Air Quality and Thermal Environment in an Old City District by Constructing Wind Passages

1
School of Architecture and Urban Planning, Huazhong University of Science and Technology, Wuhan 430074, China
2
Department of Urban and Regional Planning, University of Hawaii at Manoa, Honolulu, HI 96822, USA
3
Institute of Geographic Sciences and Natural Resources Research, Chinese Academy of Sciences, Beijing 100101, China
*
Authors to whom correspondence should be addressed.
Academic Editor: Derek Clements-Croome
Received: 9 May 2015 / Revised: 14 August 2015 / Accepted: 7 September 2015 / Published: 15 September 2015
(This article belongs to the Special Issue Green Building)
View Full-Text   |   Download PDF [6532 KB, uploaded 15 September 2015]   |  

Abstract

A case study in an old city district with hot-humid climatic conditions in Wuhan, China was conducted to explore the potential renewal strategies favorable to the local residents and pedestrians. For this purpose, a comprehensive mathematical model considering the parameters such as ambient crosswind, solar radiation, natural convection, and a previously established heat transfer mechanism was employed to analyze the fluid flow and heat transfer characteristics of the study area. In addition, in the urban renewal process, five alternative renewal strategies, namely, Central Demolition (CD) Plan, Edge Demolition (ED) Plan, Wedge Shape Demolition (WSD) Plan, “L” Shape Demolition (LSD) Plan, and Cross Shape Demolition (CSD) Plan, were adopted to improve the thermal and ventilation environment of Wuhan old city district. Through simulation analysis, the temperature and velocity distributions of the original urban layout and five alternative renewal strategies were compared. It is found that the construction of an air passage within the old city district can improve the local air quality, air ventilation, and thermal environment to some extent. Among the five alternative strategies to construct air passages, CSD Plan is much better than the others. Accordingly, corresponding suggestions and strategies for urban renewal were presented. View Full-Text
Keywords: urban renewal; wind passage; air ventilation; thermal comfort urban renewal; wind passage; air ventilation; thermal comfort
This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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MDPI and ACS Style

Peng, C.; Li, C.; Zou, Z.; Shen, S.; Sun, D. Improvement of Air Quality and Thermal Environment in an Old City District by Constructing Wind Passages. Sustainability 2015, 7, 12672-12692.

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