scholarly journals The assessment of natural ventilation potential in an affordable housing compound in Alexandria, Egypt

2016 ◽  
Author(s):  
G. Mossaad ◽  
B. Gomaa ◽  
M. Rizk
Keyword(s):  
Affordable Housing ◽  
Natural Ventilation

scholarly journals Analyzing the Application of Void Decks on High-rise Affordable Housing in Jakarta, Indonesia, to Achieve Optimal Urban Ventilation

2021 ◽  
Vol 38 (3) ◽  
Author(s):  
Megan Afkasiga Ririhena ◽  
Nedyomukti Imam Syafii
Keyword(s):  
Affordable Housing ◽  
Urban Areas ◽  
Natural Ventilation ◽  
Residential Buildings ◽  
Development Program ◽  
Simulation Method ◽  
Climatic Conditions ◽  
High Rise ◽  
Asean Countries ◽  
Wind Source

Economic growth in ASEAN countries encourages significant urbanized growth. In line with the growth of urbanization, large swathes of residential buildings have been constructed in urban areas, especially, in the case of Indonesia, through the government's 1000 rusun (high-rise affordable housing) development program in Jakarta. In order to reduce energy consumption and create a sustainable rusun, a passive strategy is needed in the form of natural air conditioning through optimized natural ventilation in these buildings. In this study, testing was conducted on Rusun Rorotan in Jakarta, from two wind source directions (north and northwest) with five void decks configuration samples each, in order to determine wind flow and wind speed patterns in the Rusun area. For this purpose, the wind tunnel simulation method using the Butterfly plugin in Grasshopper was employed. T These results should provide a reference for future residential property developers, especially in the scope of other countries in ASEAN, which have similar climatic conditions to that of Indonesia.

Investigation of the natural ventilation of wind catchers with different geometries in arid region houses

2020 ◽  
Vol 14 (3) ◽  
pp. 7109-7124
Author(s):  
Nasreddine Sakhri ◽  
Younes Menni ◽  
Houari Ameur ◽  
Ali J. Chamkha ◽  
Noureddine Kaid ◽  
...  
Keyword(s):  
Arid Region ◽  
Natural Ventilation ◽  
Reduction Rate ◽  
Internal Flow ◽  
Climatic Conditions ◽  
Maximum Pressure ◽  
Ventilation Technique ◽  
Window Position ◽  
The One ◽  
Flow Velocities

The wind catcher or wind tower is a natural ventilation technique that has been employed in the Middle East region and still until nowadays. The present paper aims to study the effect of the one-sided position of a wind catcher device against the ventilated space or building geometry and its natural ventilation performance. Four models based on the traditional design of a one-sided wind catcher are studied and compared. The study is achieved under the climatic conditions of the South-west of Algeria (arid region). The obtained results showed that the front and Takhtabush’s models were able to create the maximum pressure difference (ΔP) between the windward and leeward of the tower-house system. Internal airflow velocities increased with the increase of wind speed in all studied models. For example, at Vwind = 2 m/s, the internal flow velocities were 1.7, 1.8, 1.3, and 2.5 m/s for model 1, 2, 3, and 4, respectively. However, at Vwind = 6 m/s, the internal flow velocities were 5.6, 5.5, 2.5, and 7 m/s for model 1, 2, 3, and 4, respectively. The higher internal airflow velocities are given by Takhtabush, traditional, front and middle tower models, respectively, with a reduction rate between the tower outlet and occupied space by 72, 42, 36, and 33% for the middle tower, Takhtabush, traditional tower, and the front model tower, respectively. This reduction is due to the due to internal flow resistance. The third part of the study investigates the effect of window (exist opening) position on the opposite wall. The upper, middle and lower window positions are studied and compared. The air stagnation or recirculation zone inside the ventilated space reduced from 55% with the lower window to 46% for the middle window and reached 35% for the upper window position. The Front and Takhtabush models for the one-sided wind catcher with an upper window position are highly recommended for the wind-driven natural ventilation in residential houses that are located in arid regions.

Oversight

2011 ◽  
Author(s):  
Michael D. Minta
Keyword(s):  
Civil Rights ◽  
Affordable Housing ◽  
Federal Agencies ◽  
Negative Stereotypes ◽  
Linked Fate ◽  
Congressional Oversight ◽  
Policy Debates ◽  
The Subject ◽  
Minority Interests ◽  
Black And Latino

This book answers the question of whether black and Latino legislators better represent minority interests in Congress than white legislators, and it is the first book on the subject to focus on congressional oversight rather than roll-call voting. The book demonstrates that minority lawmakers provide qualitatively better representation of black and Latino interests than their white counterparts. They are more likely to intervene in decision making by federal agencies by testifying in support of minority interests at congressional oversight hearings. Minority legislators write more letters urging agency officials to enforce civil rights policies, and spend significant time and effort advocating for solutions to problems that affect all racial and ethnic groups, such as poverty, inadequate health care, fair housing, and community development. This book argues that minority members of Congress act on behalf of broad minority interests—inside and outside their districts—because of a shared bond of experience and a sense of linked fate. It shows how the presence of black and Latino legislators in the committee room increases the chances that minority perspectives and concerns will be addressed in committee deliberations, and also how minority lawmakers are effective at countering negative stereotypes about minorities in policy debates on issues like affirmative action and affordable housing.

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