من السبت الى الخميس (8:00AM-2:00PM)
تواصل معنا : +9647716699096







  • م.د. عمار محمد عبد اللطيف جاسم
  • Dr Ammar Mohammed Abdulateef
  • رئيس قسم : هندسة تقنيات الطيران
  • Head of the Department : DEPARTMENT OF AERONAUTICAL ENGINEERING TECHNIQUES
  • دكتوراه هندسة ميكانيك
  • PhD in Mechanical Engineering
  • ammar@bauc14.edu.iq
  • ammarukm@gmail.com
  • السيرة الذاتية
  • Google Scholar
  • ORCId
  • Research Gate
  • Research Id

    • نشاطات التدريسي

    البحوث المنشورة

    المؤلفات

    المقررات المكلف بها

    المحاضرات

    مشاريع التخرج

    المقالات داخل المجلة

    البحوث

    2023 sustainability
    Flat plate collectors (FPCs) are the leading solar thermal technology for low-medium range temperature applications. However, their expansion in developing countries is still lacking because of their poor thermal performance. Improving the thermal performance of flat plate collectors (FPCs) is a crucial concern addressed in this review This study comprehensively discussed the performance improvement methods of FPCs, such as design modification, reflectors, working fluid, and energy storage materials, by covering current issues and future recommendations. Design factors such as coating and glass cover thickness, thickness of absorber plate and material, air gap between the glass cover and absorber plate, and riser spacing, along with insulation materials, are examined for their impact on FPC performance. Absorber design changes with selective coatings for improving the heat transmission rate between the working fluid and absorber are critical for enhancing collectors’ thermal output. The nanofluids utilization improved FPC’s thermal performance in terms of energetic and exergetic outcomes in the 20–30% range. Moreover, adding a heat storage unit extends the operating hours and thermal output fluctuations of FPCs. Research suggests that employing turbulators and nanofluids as heat transfer fluids are particularly effective for enhancing heat transfer in FPCs. This comprehensive review serves as a critical tool for evaluating and comparing various heat transfer augmentation techniques, aiding in the selection of the most suitable option.

    2024 ICHMT
    Many phase change materials exhibit low thermal conductivity, leading to incomplete melting and solidification processes. To address this issue, researchers have numerically explored the integration of alumina nanoparticles (Al ) with paraffin (RT82), a phase change material with a solidification temperature of 65 ◦ C, in a triplextube heat exchanger. The phase change material model with internal longitudinal fins employed the bothsides freezing technique and was conducted using Ansys Fluent software, employing the enthalpy-porosity method within a finite-volume framework to model the phase change material behavior during both melting and solidification phases. This methodology aims to significantly improve the thermal performance of thermal energy storage systems by enhancing heat transfer efficiency within the phase change material (PCM), thereby ensuring more effective utilization of stored thermal energy. The numerical findings show that the pure PCM completely solidified in 780 min. By dispersing 1 %, 4 %, 7 %, and 10 % of Al 2 O 3 in the PCM, thermal conductivity improved by 3 %, 12.5 %, 22.5 %, and 32.5 %, respectively. Additionally, the inclusion of nano-PCM reduced the solidification time. This research also compares the overall energy release in two different situations: PCM with and without nanoparticles. The computer-generated simulation results closely correlated with the practical experimentation results




    En