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Enhancing Thermal Comfort:
Air Temperature Control Based on Human Facial Skin Temperature
By
Bo Yi
A Thesis Document
SCHOOL OF ARCHITECTURE
UNIVERSITY OF SOUTHERN CALIFORNIA
In Partial Fulfillment of the
Requirements for the Degree
MASTER OF BUILDING SCIENCE
May 2015
Object Description
| Title | Enhancing thermal comfort: air temperature control based on human facial skin temperature |
| Author | Yi, Bo |
| Author email | yib@usc.edu;hory.bo.yi@gmail.com |
| Degree | Master of Building Science |
| Document type | Thesis |
| Degree program | Building Science |
| School | School of Architecture |
| Date defended/completed | 2015-03-23 |
| Date submitted | 2015-04-25 |
| Date approved | 2015-04-28 |
| Restricted until | 2017-04-25 |
| Date published | 2017-04-25 |
| Advisor (committee chair) | Choi, Joon-Ho |
| Advisor (committee member) |
Konis, Kyle Noble, Douglas |
| Abstract | Thermal comfort is defined as condition of mind that indicates human thermal sensation, such as cool or warm, with the thermal environment. Achieving thermal comfort for occupants in buildings is an important purpose of heating, ventilation, and air conditioning (HVAC) systems. Air temperature is one of the significant parameters that affect thermal comfort, in addition to mean radiant temperature, air speed, relative humidity, metabolic rate, and clothing insulation. However, since physiological conditions and satisfaction standards vary considerably from person to person, each individual normally has a different acceptable range of air temperature in a certain thermal condition. It is possible to create an automatic system by utilizing physiological signals to help control and optimize buildings’ indoor air temperature to help maintain thermal neutrality in a one-occupant room. Skin temperatures can signal appropriate thermoregulatory behavior in response to specific conditions, since skin temperature changes with different thermal sensations. The main goal of this study is to better understand the relationship between facial skin temperature and human thermal sensation in order to achieve the appropriate conditioned air temperature dynamic settings, thus helping to achieve thermal comfort by reading facial temperature signal patterns. A series of human subject experiments were conducted in an environmental chamber at USC. Facial skin temperatures were tested continuously by six electronic thermocouples at six locations and sensation surveys were provided by subjects. During the tests, the air temperature was regulated between 20°C and 30°C, while the other five thermal parameters were kept constant. A thermal sensation diagnostic model and control logic with decision tree was built by using data mining and machine learning technology. |
| Keyword | thermal chamber; thermoregulation; bio-sensing; decision tree; neural network |
| Language | English |
| Format (imt) | application/pdf |
| Part of collection | University of Southern California dissertations and theses |
| Publisher (of the original version) | University of Southern California |
| Place of publication (of the original version) | Los Angeles, California |
| Publisher (of the digital version) | University of Southern California. Libraries |
| Provenance | Electronically uploaded by the author |
| Type | texts |
| Legacy record ID | usctheses-m |
| Contributing entity | University of Southern California |
| Rights | Yi, Bo |
| Physical access | The author retains rights to his/her dissertation, thesis or other graduate work according to U.S. copyright law. Electronic access is being provided by the USC Libraries in agreement with the author, as the original true and official version of the work, but does not grant the reader permission to use the work if the desired use is covered by copyright. It is the author, as rights holder, who must provide use permission if such use is covered by copyright. The original signature page accompanying the original submission of the work to the USC Libraries is retained by the USC Libraries and a copy of it may be obtained by authorized requesters contacting the repository e-mail address given. |
| Repository name | University of Southern California Digital Library |
| Repository address | USC Digital Library, University of Southern California, University Park Campus MC 7002, 106 University Village, Los Angeles, California 90089-7002, USA |
| Repository email | cisadmin@lib.usc.edu |
| Filename | etd-YiBo-3405.pdf |
| Archival file | Volume2/etd-YiBo-3405.pdf |
Description
| Title | Page 1 |
| Repository email | cisadmin@lib.usc.edu |
| Full text | Enhancing Thermal Comfort: Air Temperature Control Based on Human Facial Skin Temperature By Bo Yi A Thesis Document SCHOOL OF ARCHITECTURE UNIVERSITY OF SOUTHERN CALIFORNIA In Partial Fulfillment of the Requirements for the Degree MASTER OF BUILDING SCIENCE May 2015 |
