Yahoo Αναζήτηση Διαδυκτίου

Αποτελέσματα Αναζήτησης

  1. www.comsol.com › model › fuel-cell-stack-cooling-105191Fuel Cell Stack Cooling - COMSOL

    This tutorial models the thermal management of a polymer electrolyte membrane (PEM) fuel cell stack. Operating the stack with a similar temperature profile for all cells is important since an uneven temperature distribution may otherwise result in nonuniform water vapor condensation and a large cell-to-cell variation in performance.

  2. 3 Μαρ 2014 · PEM fuel cell modeling examples show how you can investigate mass transport, ohmic losses, serpentine flow, and species transport in a PEM fuel cell.

  3. 23 Αυγ 2016 · Modeling an SOFC stack requires combining a rather intricate geometry with large aspect ratios and multiple physics in a 3D problem. Each SOFC features two reactant flows: air and fuel. These two elements can have different compositions and several parameters that describe inlet and environmental conditions.

  4. The Fuel Cell Stack block implements a generic model parameterized to represent most popular types of fuel cell stacks fed with hydrogen and air. The block represents two versions of the stack model: a simplified model and a detailed model.

  5. 5 Νοε 2018 · In this work, a PEM fuel cell stack model incorporating the cross flow effect and minor loss is established and validated by the experimental data. The pressure and mass flow distributions in the fuel cell stack have been obtained from the modeling.

  6. This is a collection of relevant formulas, calculations and equations for designing a fuel cell system (FCS). H2 + O2 ! H2O(g) The reaction enthalpy rH is equal to the enthalpy of water forma-tion fH. The (chemical) energy content of any fuel is called heating value (for more information on thermodynamics see chapter 4.1).

  7. Fuel cell modeling involves different levels of detail, such as the electrode, the single cell, the stack, and the system level. At the electrode level, the main phenomena usually taken into account in the models are the electrochemical reaction, the charge conduction, and the mass transfer.

  1. Γίνεται επίσης αναζήτηση για