Loading...

Chemical and Petroleum Engineering Department

Basirian Jahromi, Ali | 2012

2052 Viewed
  1. Type of Document: M.Sc. Thesis
  2. Language: Farsi
  3. Document No: 43091 (06)
  4. University: Sharif University of Technology
  5. Department: Chemical and Petroleum Engineering
  6. Advisor(s): Rashtchian, Davood; Baghalha, Morteza
  7. Abstract:
  8. Fuel Cell with Polymer membrane uses a reaction with Hydrogen and Oxygen as reactants to produce electricity. As the product of this reaction is water, this fuel cell produce clean energy. But if the produced water accumulates it can cause problems for fuel cell which can lead to complete failed of fuel cell. On the other hand water shortage in PEM fuel cell also can cause problems. So we need to have continues water management inside of PEM fuel cell. For this sake having knowledge about water inside of PEM fuel cell and specially the Gas Diffusion Layer which is the layer with responsibly to help the fuel cell to manage the water, is necessary. One of the ways for gaining that knowledge is to have CFD model of water inside the fuel cell.
    In this project, a two dimensional model for GDL of PEM fuel cell has been de-veloped, and water distribution was calculated inside it. At the end the model got validated with three different experimental works. The results of this validation were good and the results from the model showed good compliance with experimental data, and proved that this model can be used to predict water dis-tribution inside GDL. We also performed sensitivity analysis for some important parameters like permeability of water inside GDL, to show what parameters have the most influence for this project other situation that we have similar conditions, and we checked these parameters with experimental data to see whether they are acceptable or not? And the answer was positive
  9. Keywords:
  10. Proton Exchange Membrane (PEM)Fuel Cell ; Computational Fluid Dynamics (CFD) ; Water Distribution System ; Permeability ; Gas Diffusion Layer (GDL)

 Digital Object List

 Bookmark

  • چکیده
  • لیست تصاویر
  • لیست جداول
  • لیست علائم و اختصارات
  • فصل 1 - مقدمه
    • 1-1 تاریخچه و کاربرد
    • 1-2 نحوه کارکرد
    • 1-3 مشخصات پیل سوختی با غشاء پلیمری
    • 1-4 مدیریت آب در پیل سوختی پلیمری
    • 1-5 کارهای انجام شده در این زمینه
  • فصل 2 – مقدمات CFD و تئوری
    • 2-1 پیچیدگی‌های انجام این CFD
    • 2-2 تئوری و معادلات
      • 2-2-1 انتقال جرم
      • 2-2-2 انتقال مومنتوم
      • 2-2-3 انتقال حرارت
    • 2-3 شرایط مرزی
      • 2-3-1 در ورودی کانال
      • 2-3-2 بر روی پایه42F (دیواره)کانال
      • 2-3-3 در مرز لایه کاتالیستی
      • 2-3-4 بر روی مرز های بالا و پایین لایه
  • فصل 3 - انجام CFD
    • 3-1 تهیه دامنه محاسباتی و مش زنی
    • 3-2 کوپل کردن فیزیک‌ها
  • فصل 4 - نتایج و مقایسه با داده های تجربی
    • 4-1 شکل‌ها و نمودارها
      • 4-1-1 مدل سازی کار تجربی 1:
      • 4-1-2 مدل سازی کار تجربی 2:
      • 4-1-3 مدل سازی کار تجربی 3:
    • 4-2 آنالیز حساسیت پارامترها
    • 4-3 بحث در مورد نتایج
    • 4-4 نتیجه گیری
    • 4-5 کارهای آینده
  • مراجع
  • پیوست الف – آشنایی با نرم افزار Comsol
    • الف-1 انتخاب نرم افزار Comsol
    • الف-2 روش استفاده از نرم افزار Comsol
...see more