Fuel cells similar to the PEM cell of Example 1.5 operate with a mixture of liquid water and methanol instead of hydrogen: the anode is placed in direct contact with the liquid fuel. Oxygen (species A) is delivered to the exposed cathode by free convection. Hence, no fans or pumps are needed to operate the device. The power output of passive, direct methanol fuel cells (DMFCs) can become
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Fundamentals of Heat and Mass Transfer
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- Principles of Heat Transfer (Activate Learning wi...Mechanical EngineeringISBN:9781305387102Author:Kreith, Frank; Manglik, Raj M.Publisher:Cengage Learning