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All Subjects: Housing
Status: Published

The Effects of an Energy Efficiency Retrofit on Indoor Air Quality

Description

To investigate the impacts of an energy efficiency retrofit, indoor air quality and resident health were evaluated at a low‐income senior housing apartment complex in Phoenix, Arizona, before and after a green energy building renovation. Indoor and outdoor air quality sampling was carried out simultaneously with a questionnaire to characterize personal habits and general health of residents. Measured indoor formaldehyde levels before the building retrofit routinely exceeded reference exposure limits, but in the long‐term follow‐up sampling, indoor formaldehyde decreased for the entire study population by a statistically significant margin. Indoor PM levels were dominated by fine particles and showed a statistically significant decrease in the long‐term follow‐up sampling within certain resident subpopulations (i.e. residents who report smoking and residents who had lived longer at the apartment complex).

ContributorsFrey, S.E. (Author) / Destaillats, H. (Author) / Cohn, S. (Author) / Ahrentzen, S. (Author) / Fraser, M.P. (Author)

Created2015

Inclusive Housing and Social Justice: Creating a Community-Centered Approach to Housing Policy

Description

There are many historical inequities regarding housing in the United States, such as the lack of access to affordable and secure housing for people of color, which is a result of centuries of exclusion. These problems remain ineffectively addressed or unaddressed by policy. Indeed, many community-based organizations report that housing policies fail to address the needs of the people—especially those in marginalized communities. Top-down approaches are efficient and more broadly applicable but miss important community-specific problems. Meanwhile, bottom-up approaches excel in highlighting community perspectives and the lived experiences of residents, but they are challenging to generalize across jurisdictions. This thesis captures community-based understandings of policy through in-depth interviews with community-based organizations (CBOs) and applies these understandings to develop a new quantitative framework for evaluating the strengths and weaknesses of housing policies that can be applied across the United States. The thesis also explores various housing policies through a multi-dimensional, intersectional, and forward-thinking analysis that centers marginalized communities.

ContributorsMoen, Anders Jacob (Author) / Colbern, Allan (Thesis advisor) / Pfeiffer, Deirdre (Committee member) / Lee, Sangmi (Committee member) / Arizona State University (Publisher)

Created2021

Roof Tube: Developing a Device to Reduce Indoor Temperatures and Improve Air Quality of Corrugated Roofed Homes in Developing Nations

Description

This study documents and explores the process of designing a device to decrease the indoor temperature and particulate matter concentration in the air of corrugated steel homes in sub-Saharan Africa. The device, named the Roof Tube, generates power from a solar panel that goes towards powering a motor that rotates blades to output a desired airflow to draw air out from the inside environment. Excess power generated goes towards charging a battery pack during the day that then powers the motor and a light (to improve indoor living quality) during the night when the solar panel cannot collect any more energy. Calculations were done to estimate the ambient indoor temperature of a model home based on the heat transfer from the sun. From this, a rough airflow was determined to offset the temperature difference between the indoor and outdoor environment. A computational fluid dynamics test was performed to determine the effectiveness of the housing design. Results from all tests displayed a low difference between outdoor and indoor temperatures leading to a low prediction of outlet airflow. The designed device prioritized effectiveness, it displaces air at 2700 cfm and charges a 54000mAh battery pack that, when solar energy generation is cut off, can power the motor and light simultaneously for on average 3.02 hours, the motor alone for 8.88 hours, and the light alone for 4.57 hours.

ContributorsHangalay, Ayman (Author) / Paaijmans, Krijn (Thesis director) / Kwon, Beomjin (Committee member) / Bassin Jobe, Ndey (Committee member) / Barrett, The Honors College (Contributor) / Tech Entrepreneurship & Mgmt (Contributor) / Mechanical and Aerospace Engineering Program (Contributor)

Created2022-05