| Author | Shrestha, Madhu |
| Call Number | AIT Thesis no.ET-93-11 |
| Subject(s) | Daylighting--Nepal--Kathmandu
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| Note | A thesis submitted in partial fullfillment of the requirement for the degree of Master of Engineering. |
| Publisher | Asian Institute of Technology |
| Series Statement | Thesis ; no. ET-93-11 |
| Abstract | This study deals with analysis ofthe daylighting potential in Kathmandu, Nepal using Lumens and GDDM method as a design procedure. Correlation of diffuse radiation and sunshine hours were developed using the data of three months (i.e. measured data of diffuse illumination and global radiation of 1993). Diffuse efficacy factor were calculated using calculated diffuse radiation data from the Erbs et al model and measured diffuse illumination data of three months (Jan, Feb, March 1993). The daylight factor curves and contours are produced for typical perimeter zone of building with windows. Analysis has been done for different window/wall ratio, using standard reflective values of wall ceiling and floor (in case of lumens method). Outdoor illumination level have been derived from the correlation using the recorded data of global solar radiation of 1986 (Source: RECAST, Kathmandu). The procedure were applied to both office and hotel buildings. Physical measurements were performed and results were analyzed and presented here. Statistical frequency distribution of exterior horizontal illumination were derived using efficacy factor and this values are used for calculation of daylight factor curve and contours. Based on this available illumination, required supplementary artificial lighting were calculated to satisfy a given lighting requirements. The significant use of energy consumption in temperate climate are heat transfer through window and wall into a room. For a typical room, material details of the case study building were used in computer program (in turbo-basic using finite difference method) to compute heat transfer value. Data of Typical day (i.e. global and diffuse radiation and temperature) for summer and winter were used in computer program to calculate effective solar radiation. An output data (i.e. effective solar radiation) were used to calculate heat transfer through window. Based on the heat transfer values of window and wall, daylighting vs energy use for typical summer and winter day were calculated. |
| Year | 1993 |
| Corresponding Series Added Entry | Asian Institute of Technology. Thesis ; no. ET-93-11 |
| Type | Thesis |
| School | School of Environment, Resources, and Development (SERD) |
| Department | Department of Energy and Climate Change (Former title: Department of Energy, Environment, and Climate Change (DEECC)) |
| Academic Program/FoS | Energy Technology (ET) |
| Chairperson(s) | Surapong Chirarattananon |
| Examination Committee(s) | Bhattacharya, Sribas C.;Supachart Chungpaibulpattana |
| Scholarship Donor(s) | The Government of Denmark. |
| Degree | Thesis (M.Eng.) - Asian Institute of Technology, 1993 |