Research Article
An Improved Approach for Maximum Daily Global Solar Irradiance Estimation
Jacques Marie Ilboudo,
Dominique Bonkoungou*,
Wilfried Rimnogdo Ouedraogo,
Sosthene Tassembedo,
Zacharie Koalaga
Issue:
Volume 14, Issue 1, February 2025
Pages:
1-11
Received:
25 November 2024
Accepted:
31 December 2024
Published:
21 January 2025
DOI:
10.11648/j.ajep.20251401.11
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Abstract: In the current context of climate change, solar energy stands out as a significant alternative to fossil fuels, which are both polluting and non-renewable. However, one of the main challenges in harnessing solar energy is the limited availability of data on solar radiation. Collecting solar radiation data through meteorological stations incurs considerable costs, unlike certain solar irradiation models that can provide such data for free. To facilitate access to solar irradiation information at no cost and to enhance the adoption and competitiveness of solar energy, it is crucial to develop practical daily global solar irradiation models that are applicable worldwide. This study aligns with that objective, aiming to develop a general model for estimating the maximum daily global solar irradiation. We use daily global solar irradiation data collected from 60 sites, spanning the years 2000 to 2023, for horizontal ground surfaces. To evaluate the performance of the proposed model, we conducted a detailed analysis using performance metrics. Two key indicators are highlighted in this manuscript: MAPE (Mean Absolute Percentage Error) and Pearson’s correlation coefficient. By utilizing daily global solar irradiation data from the 60 sites, empirical mathematical relationships for extraterrestrial daily solar irradiation, and computational tools, we established a mathematical expression for estimating maximum daily global solar irradiation. This model is specifically designed as a function of latitude and is independent of measured data such as sunshine duration, temperature, or humidity. Based on the performance indicators, the derived mathematical model demonstrates reasonable accuracy and a strong correlation.
Abstract: In the current context of climate change, solar energy stands out as a significant alternative to fossil fuels, which are both polluting and non-renewable. However, one of the main challenges in harnessing solar energy is the limited availability of data on solar radiation. Collecting solar radiation data through meteorological stations incurs cons...
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Research Article
Assessment of Water Quality and Sanitation Systems in Urban Slums: A Case Study of Rajshahi City Corporation, Bangladesh
Issue:
Volume 14, Issue 1, February 2025
Pages:
12-20
Received:
23 December 2024
Accepted:
13 January 2025
Published:
7 February 2025
DOI:
10.11648/j.ajep.20251401.12
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Views:
Abstract: Over the past few decades, Rajshahi City slum population has grown as a result of the city's promise to provide jobs for the underprivileged in the surrounding area. Thousands upon thousands of poor, helpless people are pouring into cities in search of work. Due to the involvements of the government, RCC, and other national and international non-governmental organizations (NGOs), the slums are getting access to pure drinking water supply, although these are still insufficient. The study's objectives are to evaluate the drinking water quality in a few chosen Rajshahi city slums, as well as to examine the current water distribution and sanitation systems. Every slum home (8 slums) completed a questionnaire survey to provide data for the study. In this cross-sectional study conducted in randomly selected slums, color, pH, TS, TDS, turbidity, and electric conductivity were measured in drinking water in the laboratory. Twenty water samples (randomly chosen based on ownership, such as singly, jointly, or City Corporation provided) have been taken from the research area in all, with tubewells providing the majority of them. The survey found that most slum dwellings employ water seal latrines for waste disposal and tube-well water for drinking. There are somewhat hygienic pit and water seal latrines. These could contaminate groundwater, depending on the characteristics of the soil and the distance between the latrines and water sources. Drinking water at sample sites was slightly acidic (pH 5.7-6.8). Turbidity varies from 0.28 to 21.7 NTU, conductivity varies from 300 to 1300 μS/cm, TDS varies from 200 to 700 ppm, and TS varies from 200 to 2200 ppm. This paper concludes that awareness raising on physical contents in drinking water at the household level is required to improve public health.
Abstract: Over the past few decades, Rajshahi City slum population has grown as a result of the city's promise to provide jobs for the underprivileged in the surrounding area. Thousands upon thousands of poor, helpless people are pouring into cities in search of work. Due to the involvements of the government, RCC, and other national and international non-go...
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,
Shakib Al Hasan
