Experimental Study of a Novel Design Dead-End H2/O2 PEM Fuel Cell Stack with unified Humidifier

  • سال انتشار: 1394
  • محل انتشار: کنفرانس بین المللی فناوری و مدیریت انرژی
  • کد COI اختصاصی: IEAC02_157
  • زبان مقاله: انگلیسی
  • تعداد مشاهده: 1129
دانلود فایل این مقاله

نویسندگان

Ebrahim Alizadeh

Malek-Ashtar University of Technology Fuel Cell Technology Research Laboratory Fridonkenar, Iran

Majid Khorshidian

Malek-Ashtar University of Technology Fuel Cell Technology Research Laboratory Fridonkenar, Iran

Seyed Hossein Masrori Saadat

Malek-Ashtar University of Technology Fuel Cell Technology Research LaboratoryFridonkenar, Iran

Mazaher Rahimi-Esbo

Malek-Ashtar University of Technology Fuel Cell Technology Research Laboratory Fridonkenar, Iran

چکیده

Proton exchange membrane fuel cells (PEMFCs) with a dead-ended anode and cathode can obtain high hydrogen and oxygen utilization by a comparatively simple system.Accumulation of the water in the anode and cathode channels can lead to a local fuel starvation, which degrades theperformance and durability of PEMFCs. In this paper for thefirst time, a new design for a polymer electrolyte membrane (PEM) fuel-cell stack is presented that can achieve higher fuel utilization without using hydrogen and oxygen recirculation devices such as hydrogen pumps or ejectors, which consumeparasitic power and require additional control schemes. Unified humidifier is another novelty that is applied for the first time. Allpart of systems is compact in a module. The basic concept of the proposed design is to divide the anodic cells of a stack into two blocks by conducting the outlet gas of each stage to a separator and reentering to next stage, thereby constructing a multistage anode and cathode. In this design, a higher gaseous flow rate is maintained at the outlet of the cells, even under dead-end conditions, and this results in a reduction of purge-gas emissions by hindering the accumulation of liquid water in the cells. The result shows that with this new design the dead-end mode condition has the same performance as open-end mode.

کلیدواژه ها

PEM Fuel Cell; Dead-end Operation; Purge time;Stack design; Unified Humidifire

مقالات مرتبط جدید

اطلاعات بیشتر در مورد COI

COI مخفف عبارت CIVILICA Object Identifier به معنی شناسه سیویلیکا برای اسناد است. COI کدی است که مطابق محل انتشار، به مقالات کنفرانسها و ژورنالهای داخل کشور به هنگام نمایه سازی بر روی پایگاه استنادی سیویلیکا اختصاص می یابد.

کد COI به مفهوم کد ملی اسناد نمایه شده در سیویلیکا است و کدی یکتا و ثابت است و به همین دلیل همواره قابلیت استناد و پیگیری دارد.