| Title : | Assessment of solar energy potentials of Lao People's Democratic Republic : A research report of collaborative project between Lao People's Democratic Republic and Thailand on Assessment of Solar Energy Potentials for Lao People's Democratic Republic | | Material Type: | printed text | | Publisher: | Silpakorn University | | Publication Date: | 2007 | | Pagination: | 364 p | | Layout: | ill | | Size: | 31 cm | | ISBN (or other code): | 9789746411752 | | Languages : | English (eng) | | Descriptors: | [LCSH]Solar energy
[LCSH]Solar energy -- Laos
| | Abstract: | Abstract : The main objective of this project is to investigate the solar energy potentials of Lao People’s Democratic Republic (Lao PDR). To investigate the solar energy potentials, solar radiation over Lao PDR was estimated using a satellite solar radiation model. An 11-year period (1995-2005) of satellite image data from GMS5 and GOES9 satellites were used as input of the model. This model accounted for the reflectivity of cloud, absorption of water vapour, ozone and radiation depletion by aerosol. The satellite data provided cloud information for the model. The absorption of solar radiation due to water vapour was computed from precipitable water obtained from ambient relative humidity and temperature at 17 meteorological stations. The ozone data from the TOMS/EP satellite were used to compute the solar radiation absorption by ozone. The depletion of radiation due to aerosols was estimated from visibility data and the 5S radiative transfer model. Pyranometer stations were established in 5 locations in Lao PDR: Vientiane, Luangprabang, Xamnua, Thakhak and Pakxe. Global radiation measured at these stations was used to validate the model. The validation was also performed by using existing solar radiation collected at 3 stations in Thailand: Nongkhai, Nakhon Panom and Ubon Ratchathani. The solar radiation calculated from the model was in good agreement with that obtained from the measurements, with a root mean square difference (RMSD) of 7.2 %. After the validation, the model was used to calculate the monthly average daily global solar radiation for the entire country. The results were displayed as monthly radiation maps and a yearly map. The monthly maps revealed the seasonal variation of solar radiation affected by the monsoons and local geography and solar radiation is highest in April for most parts of the country. From the yearly map, it was observed that the western parts of the country received high solar radiation with the values of 17-18 MJ/m2-day. The areas which receive the highest solar radiation are in the south with the values of 18-19 MJ/m2-day. The yearly average of solar radiation for the entire country was found to be 15.8 MJ/m2-day. This solar radiation data revealed that Lao PDR has relatively high solar energy potentials which can be utilized for various solar energy applications. The maps can be used as a tool for site selection of solar energy technologies. A solar radiation database was also developed for use in designing solar energy systems. | | Record link: | http://libsearch.siu.ac.th/siu/opac_css/index.php?lvl=notice_display&id=18124 |
Assessment of solar energy potentials of Lao People's Democratic Republic : A research report of collaborative project between Lao People's Democratic Republic and Thailand on Assessment of Solar Energy Potentials for Lao People's Democratic Republic [printed text] . - Bangkok, Thailand : Silpakorn University, 2007 . - 364 p : ill ; 31 cm. ISBN : 9789746411752 Languages : English ( eng) | Descriptors: | [LCSH]Solar energy
[LCSH]Solar energy -- Laos
| | Abstract: | Abstract : The main objective of this project is to investigate the solar energy potentials of Lao People’s Democratic Republic (Lao PDR). To investigate the solar energy potentials, solar radiation over Lao PDR was estimated using a satellite solar radiation model. An 11-year period (1995-2005) of satellite image data from GMS5 and GOES9 satellites were used as input of the model. This model accounted for the reflectivity of cloud, absorption of water vapour, ozone and radiation depletion by aerosol. The satellite data provided cloud information for the model. The absorption of solar radiation due to water vapour was computed from precipitable water obtained from ambient relative humidity and temperature at 17 meteorological stations. The ozone data from the TOMS/EP satellite were used to compute the solar radiation absorption by ozone. The depletion of radiation due to aerosols was estimated from visibility data and the 5S radiative transfer model. Pyranometer stations were established in 5 locations in Lao PDR: Vientiane, Luangprabang, Xamnua, Thakhak and Pakxe. Global radiation measured at these stations was used to validate the model. The validation was also performed by using existing solar radiation collected at 3 stations in Thailand: Nongkhai, Nakhon Panom and Ubon Ratchathani. The solar radiation calculated from the model was in good agreement with that obtained from the measurements, with a root mean square difference (RMSD) of 7.2 %. After the validation, the model was used to calculate the monthly average daily global solar radiation for the entire country. The results were displayed as monthly radiation maps and a yearly map. The monthly maps revealed the seasonal variation of solar radiation affected by the monsoons and local geography and solar radiation is highest in April for most parts of the country. From the yearly map, it was observed that the western parts of the country received high solar radiation with the values of 17-18 MJ/m2-day. The areas which receive the highest solar radiation are in the south with the values of 18-19 MJ/m2-day. The yearly average of solar radiation for the entire country was found to be 15.8 MJ/m2-day. This solar radiation data revealed that Lao PDR has relatively high solar energy potentials which can be utilized for various solar energy applications. The maps can be used as a tool for site selection of solar energy technologies. A solar radiation database was also developed for use in designing solar energy systems. | | Record link: | http://libsearch.siu.ac.th/siu/opac_css/index.php?lvl=notice_display&id=18124 |
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Assessment of solar energy potentials of Lao People's Democratic Republic / Silpakorn University - 2007 
