| Summary: | 碩士 === 國立臺北科技大學 === 電機工程系碩士班 === 90 === Fuel cell is comprised of fuel cell stacks, fuel supply equipment, power transfer and heat recovery equipment. This thesis will discuss the polymer electrolyte fuel cell and its material and component such as, fuel reformer, hydrogen storage technique, direct methanol fuel cell’s character and analyze the 30[kW] commercial PEFC connect with cogeneration system.
Commercial field PEFC type has 10[kW] up to more than 100[kW] and it will become a major product in the future. The mucro gas turbine has lower cost and it will take over the PEFC product so the PEFC must be decreased the cost in the future. Otherwise, Commercial field PEFC’s performance and exhaust heat has a close relationship when it is operated in the commercial building. Therefore, this thesis will discuss the exhaust heat from PEFC, which can be used in the bath room, and kitchen,etc. and also be applied to the single effect absorption chiller(Li/H2O).
After discussing this issue, we know that the PEFC field type of 30kW has a lowest efficiency of 40[%] . The PEFC connect with AHP system has 75[%] efficiency and apply to cogeneration for building has a highest efficiency of 80[%]. However, hot water was used dropping a lot in the summer,it will decrease the total fuel cell’s efficiency, but PEFC connects AHP can supply power, hart water, ice water. Using a part of hot water can drive the absorption chiller and it can increase the total fuel cell performance and decrease the power demand at peak load.
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