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首页> 外文会议>7th Biennial Conference on Engineering Systems Design and Analysis 2004(ESDA 2004) vol.1: Advanced Energy Systems; Advanced Heat Transfer in Engineering Systems; ... >SOME CHP OPTIONS FOR WOOD-FIRED FUEL CELLS
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SOME CHP OPTIONS FOR WOOD-FIRED FUEL CELLS

机译：木质燃料电池的一些CHP选项

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The possibility of integrating biomass gasifiers with fuel cells has already been explored and shown to offer a method for using renewable energy to generate electricity at a small scale. A preliminary study of applying such a system for use in an isolated community and for several selected buildings has been made and the results of these studies reported earlier. In this study wood gasification integrated with fuel cell (WGIFC) systems in CHP configurations for five building systems with different energy demand profiles, are assessed. These are a hospital, a hotel, a leisure centre, a multi-residential community and a university hall of residence. Heat and electricity use profiles for typical examples of these buildings were obtained and the WGIFC system scaled to the power demand. Detailed technical, environmental and economic analyses of each version are made, using the ECLIPSE process simulation package. Various factors influencing the economic viability of each application are examined and a sensitivity analysis for each system produced. The WGIFC system was modelled for two different types of fuel cell, the Molten Carbonate and the Phosphoric Acid. In each case an oxygen-fired gasification system is proposed, in order to eliminate the need for a methane reformer. Technical, environmental and economic analyses of each version were made, using ECLIPSE. Since fuel cell lifetimes are not yet precisely known, economics for a range of fuel cell lifetimes have been produced. While the wood-fired Phosphoric Acid Fuel Cell (WFPAFC) system was found to have low electrical efficiency (13 - 16%), the wood-fired Molten Carbonate Fuel Cell (WFMCFC) system was found to be quite efficient for electricity generation (24 to 27%). Much of the waste heat could be recovered for the WFPAFC, so that the overall efficiency was 64 to 67%, and some waste heat, but potentially of higher grade, could be recovered by the WFMCFC to give an overall energy efficiency of 60 to 63%. The capital costs of both systems are still expected to be very high, but the examination of wood fuel prices, fuel cell costs, fuel cell lifetime and waste heat selling prices on the break-even selling price for electricity, as well as comparative sensitivity analyses, can help identify which other factors would have the mam impacts on the system economics.
机译：已经探索了将生物质气化炉与燃料电池集成的可能性，并显示出它提供了一种使用可再生能源小规模发电的方法。已经进行了将这种系统用于隔离社区和选定建筑物中的初步研究，并且这些研究的结果已在较早之前报道。在本研究中，对五种具有不同能源需求曲线的建筑系统的CHP配置中的与燃料电池（WGIFC）系统集成的木材气化进行了评估。这些是医院，酒店，休闲中心，多住宅社区和大学宿舍。获得了这些建筑物典型实例的热和电使用情况，并将WGIFC系统缩放到电力需求。使用ECLIPSE过程模拟软件包对每个版本进行了详细的技术，环境和经济分析。检查了影响每个应用程序经济可行性的各种因素，并对每个生产的系统进行了灵敏度分析。 WGIFC系统是针对两种不同类型的燃料电池（熔融碳酸盐和磷酸）建模的。在每种情况下，都提出了一种氧气燃烧的气化系统，以消除对甲烷重整器的需求。使用ECLIPSE对每个版本进行了技术，环境和经济分析。由于尚未精确地知道燃料电池的寿命，因此已经产生了一系列燃料电池寿命的经济性。虽然发现燃木的磷酸燃料电池（WFPAFC）系统的电效率低（13-16％），但燃木的熔融碳酸盐燃料电池（WFMCFC）系统却对发电非常有效（24至27％）。 WFPAFC可以回收大部分废热，因此整体效率为64％至67％，WFMCFC可以回收一些废热，但潜在的是更高品位的废热，从而使整体能源效率为60至63 ％。预计这两个系统的资本成本仍然很高，但要检查木材燃料价格，燃料电池成本，燃料电池寿命和废热销售价格以及电力的收支平衡价格，以及比较敏感性分析。 ，可以帮助您确定哪些其他因素会对系统经济产生重大影响。

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