Modeling and Simulation of Hourly Irradiance for Solar Applications in Chad: Case of the City of Abeche

Abstract

In this paper, the general objective is to model and simulate the hourly irradiance followed by an assessment of the solar potential in the city of Abeche located in the climatic region of the Republic of Chad. Unlike previous work carried out in the study area on solar irradiance, two hourly solar irradiance estimation models (Capderou and Liu&Jordan) were simulated at varying tilt angles. An analysis of the quality of their estimation is carried out through statistical methods (MBD, RMSD, MAD) of error calculation. The results show that the first model is well adapted on a horizontal surface to estimate the solar radiation and also during the dry season when the surface is inclined. On the other hand, the second model is preferred during the rainy season when the surface is inclined. The solar energy over the entire area of Abeche is estimated at 427 GWh on a horizontal surface in January and 504 GWh for the month of August on a tilted surface. This can be exploited by all solar technologies or applications.

Estimation of Solar Radiation and Feasibility Analysis of a Concentrating Solar Power Plant in Birao, Central African Republic

“…The Figure 2 shows the flowchart of the methodology. The solar radiation estimation models of Perrin de Brichambaut, Capderou and Liu & Jordan are from the previous studies [40][41][42] respectively. The three models estimate global horizontal irradiance as a function of extraterrestrial irradiance and climatic parameters.…”

“…Babikir et al [41] modeled and estimated the incident solar radiation in the city of Ndjamena in Chad using the Capderou model. Arim et al [42] in their work made a comparative study of two radiation models in two cities of Chad under different angles of inclination to the ground. The results showed the limitations of these two models according to the angle of inclination and also according to the climatic seasons.…”

“…Refs. [22,[40][41][42], have shown that the models of Capderou, Perrin de Brichambaut and Liu & Jordan are the most adapted to the Sahelian desert climate. However, these models differ in the quality of their estimates depending on the periods or seasons of a given year [43][44][45][46][47].…”