Browsing by Author "เสริม จันทร์ฉาย"
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Development of a control and monitor system via the internet for a parabolic greenhouse solar dryer of banana
Collection: Theses (Master's degree) - Physics / วิทยานิพนธ์ – ฟิสิกส์Type: Thesis(Silpakorn University, 26/11/2021)In this study, a controlling and monitoring drying condition system via the internet for using in greenhouse solar dryers was developed. The system consists of a sub-system for monitoring drying conditions, a sub-system ... -
Development of a model for calculating global solar illuminance from cloud cover
Collection: Theses (Master's degree) - Physics / วิทยานิพนธ์ – ฟิสิกส์Type: Thesis(Silpakorn University, 26/11/2021)In this work, a model for calculating monthly average hourly global solar illuminance from cloud cover was developed. To obtain data for the development of the model, global solar illuminance and cloud cover were measured ... -
A development of a model for calculating global solar illuminance using Himawari satellite data
Collection: Theses (Master's degree) - Physics / วิทยานิพนธ์ – ฟิสิกส์Type: Thesis(Silpakorn University, 12/6/2020)In this research work, a model for calculating monthly average hourly global illuminance from Himawari satellite data was developed. A 3-year period (2016-2018) of data form the visible channel (0.51 m) of Himawari satellite ... -
Development of a model for calculating global spectral solar irradiance under all-sky conditions in Thailand
Collection: Theses (Ph.D) - Physics / ดุษฎีนิพนธ์ - ฟิสิกส์Type: Thesis(Silpakorn University, 4/7/2023)This thesis presents a model for computing global spectral solar irradiance under all-sky conditions in Thailand. The model expresses the global spectral irradiance under all- sky conditions as a multiplication of two ... -
Development of a model for calculating sky radiance under cloudless skies with the aerosol effect
Collection: Theses (Master's degree) - Physics / วิทยานิพนธ์ – ฟิสิกส์Type: Thesis(Silpakorn University, 12/7/2019)In this research work, a statistical model for calculating sky radiance under cloudless sky condition was developed. The proposed model is a multiplication of two functions namely gradation function and indicatrix function. ... -
Development of a small-scale solar dryer for household use: Preliminary investigation of the performance and modelling
Collection: Theses (Master's degree) - Physics / วิทยานิพนธ์ – ฟิสิกส์Type: Thesis(Silpakorn University, 12/7/2019)In this research, a small-scale solar dryer for household use was developed. The dryer consists of a semi-circle roof structure cover with polycarbonate solid sheet on a black-painted metal floor. The dimension of the ... -
Development of parabolic greenhouse solar dryer for drying para rubber sheet
Collection: Theses (Master's degree) - Physics / วิทยานิพนธ์ – ฟิสิกส์Type: Thesis(Silpakorn University, 26/11/2021)In this study, a large – scale solar dryer equipped drying air temperature controller was developed. The dryer is capable of drying 500 para rubber sheets. The temperature & relative humidity controller is able to control ... -
Development of statistical models for converting values of solar diffuse radiation from sky on horizontal plane to those of diffuse radiation on inclined planes using solar radiation data from 4 stations in Thailand
Collection: Theses (Master's degree) - Physics / วิทยานิพนธ์ – ฟิสิกส์Type: Thesis(Silpakorn University, 12/7/2019)In this work, models for converting values of diffuse solar radiation on horizontal plane into those on tilted planes with various tilted angles and sky conditions. Values of diffuse solar radiation on tilted plans were ... -
Development of typical meteorological dataset for daylight applications
Collection: Theses (Master's degree) - Physics / วิทยานิพนธ์ – ฟิสิกส์Type: Thesis(Silpakorn University, 12/7/2019)In this work, typical meteorological data (TMD) sets for daylight applications for Chiang Mai, Ubon Ratchathani, Nakhon Pathom and Songkhla were developed. In developing the TMD 10-year (2008 - 2017), data on solar radiation, ... -
Drying of banana: Experiments and modelling
Collection: Theses (Ph.D) - Physics / ดุษฎีนิพนธ์ - ฟิสิกส์Type: Thesis(Silpakorn University, 12/7/2019)In this work, drying characteristics of banana, performance of the parabolic greenhouse solar dryer for banana drying and modelling of this type of dryer have been carried out. The results of the work are as follows. For ... -
Estimation of diffuse solar radiation in different wavelength bands using satellite data over Thailand
Collection: Theses (Ph.D) - Physics / ดุษฎีนิพนธ์ - ฟิสิกส์Type: Thesis(Silpakorn University, 12/7/2019)In this work, models for estimating diffuse solar radiation in different wavelength bands namely, erythemal ultraviolet radiation (0.28-0.40 µm), photosynthetically active radiation (0.40-0.70 µm), near infrared radiation ... -
INVESTIGATION OF ATMOSPHERIC WATER VAPOUR IN THAILAND
Collection: Theses (Ph.D) - Physics / ดุษฎีนิพนธ์ - ฟิสิกส์Type: Thesis(Silpakorn University, 18/6/2021)This study aims to investigate the nature of water vapour in Thailand. The study comprises five parts. The first part is to develop a simple empirical model to estimate the precipitable water (PWV). In developing the model, ... -
Investigation of the expansion of the tropical zone and its effect on climate in Thailand
Collection: Theses (Ph.D) - Physics / ดุษฎีนิพนธ์ - ฟิสิกส์Type: Thesis(Silpakorn University, 1/7/2022)Amongst the issues associated with global climate change, the expansion of the tropics has become increasingly important. This expansion is normally demonstrated in the form of changes in the Hadley circulation. The first ... -
Mapping solar radiation from ground and satellite-based data using a semi-empirical model
Collection: Theses (Master's degree) - Physics / วิทยานิพนธ์ – ฟิสิกส์Type: Thesis(Silpakorn University, 12/7/2019)In this work, solar radiation maps were generated. A semi-empirical model for estimating monthly averaged global irradiation was developed. This model expresses the global irradiation as an empirical function of the ... -
PERFORMANCE AND MODELING OF SOLAR VAPOR COMPRESSION REFRIGERATION SYSTEMS FOR COOLING FRUITS, VEGETABLES, AND BEVERAGES UNDER A THAI ENVIRONMENT
Collection: Theses (Ph.D) - Physics / ดุษฎีนิพนธ์ - ฟิสิกส์Type: Thesis(Silpakorn University, 4/7/2023)In this research work, performances of an Auto-Regressive with eXogeneous variables (ARX) and Artificial Neural Network (ANN) were compared. It was found that the ARX outperformed the ANN in predicting load temperature of ... -
Preliminary development of low-cost instrument for measuring solar ultraviolet radiation.
Collection: Theses (Master's degree) - Physics / วิทยานิพนธ์ – ฟิสิกส์Type: Thesis(Silpakorn University, 12/7/2019)In this work, a low-cost and modirately, accurate portable device for measuring solar ultraviolet radiation (UV) was developed at Silpakorn University in Nakhon Pathom (13.82ºN, 100.04ºE). The aim of the development of ... -
A Preliminary Study of Atmospheric Water Vapour in Thailand
Collection: Theses (Master's degree) - Physics / วิทยานิพนธ์ – ฟิสิกส์Type: Thesis(Silpakorn University, 12/7/2019)In this work, a preliminary study of atmospheric water vapour in Thailand was carried out. The work consists of two parts. The first part was the development of a model for estimating precipitable water and the second ... -
A study of Cambodian - Thai cross - boundary aerosols
Collection: Theses (Master's degree) - Physics / วิทยานิพนธ์ – ฟิสิกส์Type: Thesis(Silpakorn University, 18/6/2021)In this study, cross - boundary aerosols from Cambodia to Thailand during aerosol episode in December 2018 - February 2019, December 2019 - February 2020 and December 2020 - February 2021 were investigated. The investigation ... -
A study of cloud base height and cloud cover at a tropical site in northern Thailand
Collection: Theses (Master's degree) - Physics / วิทยานิพนธ์ – ฟิสิกส์Type: Thesis(Silpakorn University, 17/8/2018)The objectives of this research are to investigate the cloud base height (CBH) and cloud cover at tropical site (17.79๐N, 98.43๐E) in northern Thailand. A ceilometer was installed at the at the site to measure CBH during ... -
A study of clouds in Thailand using ground and satellite based data
Collection: Theses (Ph.D) - Physics / ดุษฎีนิพนธ์ - ฟิสิกส์Type: Thesis(Silpakorn University, 1/7/2022)This research can be divided into three parts. The first part is to investigate the optical thickness of low cloud at Nakhon Pathom station (13.82°N, 100.04°E), Thailand during 2019-2020. A method for determining the ...