In this work, we present a numerical study of the thermal behavior of a hollow block with or without phase change material (PCM) in the Sahelian zone. The PCMs used in this study are RT27 paraffin and hydrated salt with a melting temperature of 27°C and 29.9°C respectively and a...
Open access
Research Article10.9734/ajopacs/2023/v11i1191
Aim: A subsurface geotechnical investigation was carried out for the purpose of establishing the depth of competent soil for foundation design and construction of a one-storey building. Study Design: The study was aimed at assessing the subsoil competence for a foundation design...
Open access
Research Article10.9734/ajopacs/2022/v10i4188
In the current energy context, geothermal systems are highly developed in the building field. Among these interesting systems on the energy plan, one finds in particular the earth-to-air heat exchanger commonly called ‘Canadian or Provençal well’. It consists of tubes buried in...
Open access
Research Article10.9734/ajopacs/2022/v10i4189
A numerical study of the natural heat and mass transfer in a cavity with a straight isoscele cross-section containing air is made in this paper. The two inclined side walls are kept in natural convection with the surrounding environment. The upper horizontal wall is subjected to...
Open access
Research Article10.9734/ajopacs/2022/v10i4190
This study seeks to propose a new model of hearth for the consumption of biogas produced by a biodigester of 4 m-3. The cylindrical furnace is used to heat an empty pot for 3 hours. To do this, the system is subdivided into two sub-systems, the first is the flame, which heats the...
Open access
Research Article10.9734/ajopacs/2022/v10i4187
The accumulation of dust on solar panels affects the transmittance of solar panel glazing which leads to the degradation of its efficiency due to low levels of irradiance reaching the cells. In this work, the response of polycrystalline silicon solar panels toward dust in a natur...
Open access
Research Article10.9734/ajopacs/2022/v10i4186
Aims: To evaluate the radiological impact parameters on mine workers. Study Design: The research work was carried out by using a gamma–ray spectrometer with a NaI (TI) detector. Place and Duration of Study: Centre for Energy and Research Development (CERD), Obafemi Awolowo Univer...
Open access
Research Article10.9734/ajopacs/2022/v10i3185
The present study aims at determining the level of contamination of the jawfish (Chrysichthys nigrodigitatus) by organophosphate residues in the hydroelectric dams of Faé, Kossou and Taabo. Ninety (90) fish were collected from these three dams during eight sampling campaigns. Com...
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Research Article10.9734/ajopacs/2022/v10i3184
Every radio frequency (RF) design, after its implantation, should be regularly evaluated. The kernel of this article is to evaluate the performance of four GSM networks, taking its received signal quality (RxQual) into consideration. A total of 10501, 10140, 10415 and 10690 RxQua...
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Research Article10.9734/ajopacs/2022/v10i3183
The substantial damage induced by major earthquakes requires the preparation of prevention methods before serious shocks occur. For a half-century, researchers have tried to develop an efficient method for earthquake prediction using modern scientific methods without practical re...
Open access
Research Article10.9734/ajopacs/2022/v10i3182