عنوان المقالة:تحقيق للأداء الحراري لمنظومة تصفية شمسية مزدوجة الميلان متصلة بحوض يحوي مادة متغيرة الطور و مدعومة بقيم عملية Investigating the Thermal Behavior and Productivity of a Double Slope Solar Still System Integrated with a Basin of Phase Change Material Supported by an Experimental Data
حازم جاسم جابر, قيس رشاك, قحطان عبد, سيف واثق محمد علي الطريحي
المؤلفون بالإنجليزي
Hazim Jassim Jaber: Qais A. Reshack, Qahtan A. Abed, Saif W. Mohammed Ali
الملخص العربي
A numerical model was formulated in the present study to investigate the performance of a double slope solar still system integrated with a PCM (Phase Change Material) basin. The thermal behavior and productivity of the solar still was investigated under different solar irradiation fluxes corresponding to different operating time hours. OpenFOAM V.8 code was used to solve the model using finite volume method for solution and scheme discretization. In addition, the solidity phase fraction gradient was studied under similar conditions. The numerical results were supported by an experimental data from literature conducted to the same project of the current work to validate the formulated numerical model. The numerical test of the double slope solar still was investigated under two different solar fluxes applied on both the south and north sides of the glass cover. Results show that temperature gradient on the south part side of the solar still is higher than the gradient values in the north part side. Additionally, it was found that temperature increases toward water surface because of the heat stored in the water and PCM. Regarding the solidity phase fraction of the PCM, it was found that the PCM is fused partially as the melting temperature can't be reached. However, because the upper layers in the PCM region are closer to the heat source comes from the solar still, solidity fraction of these layers is higher than the fraction values in the layers below. Indeed, the phase fraction gradient is dependent on the solar flux, higher solar flux, higher phase fraction gradient. Moreover, interesting finding is that the productivity increases with the operating time hours despite the reduction in the solar irradiation where the maximum productivity reached is 0.450 (l/m2.hr) at 4:00 PM and solar irradiation equals to 466 (W/m2) while at 12:00 PM where the irradiation reaches its maximum value (1208 W/m2), the productivity is lower (0.19 l/m2.hr). The numerical behavior of the accumulated and instantaneous productivity is agreeable and acceptable in compare with the experimental behavior where the average error of all instantaneous productivity values does not pass 20%.
سيف واثق محمد علي علي الطريحي | Saif Watheq Mohammed Ali Alturaihi | 2779