微型燃料电池热电联产系统可行性分析及系统集成

发布时间：2018-04-10 00:18

本文选题：天然气制氢　切入点：微型热电联产　出处：《华南理工大学》2014年硕士论文

【摘要】：微型热电联产系统是一种小型化的能源转换装置。它能够在一个紧凑的系统中将天然气、LPG或者其他形式的燃料同时转化为电和热，这提高了能源的利用效率，对节能减排、实现“十二五”能源规划目标具有重要意义。对中国不同气候带的5个典型城市（长春、北京、西安、上海和广州）的典型家庭在使用4种微型热电联产产品（Ene-Farm、Ene-Farm type S、Ecowill、WhisperGen）时两者的匹配程度、CO2减排量以及家庭的经济收益情况进行了分析。考察了在不同电价格、燃气价格和微型热电联产产品价格的情况下，这几个城市典型家庭在使用典型微型热电联产产品时的经济收益和投资回收期。结果指出，微型热电联产产品与中国普通家庭传统的能源获取方式相比能够在很大程度上减少CO2的排放；在当前电价格、燃气价格、采暖价格和微型热电联产产品价格的情况下，微型热电联产产品与传统的能源获取方式相比价格太过昂贵，各城市典型家庭对微型热电联产产品的目标价格大多介于5000-15000元/kWe之间，这个价格与美国能源部预期的价格基本吻合；微型热电联产系统价格、电价格和燃气价格对经济节约指数和投资回收期有重要影响。微型燃料电池热电联产系统的价格越高、燃气价格越高，，投资回收期越长，经济收益越小；电价越高，系统的投资回收期越小，经济收益越大。将天然气制氢单元、CO脱除单元、燃料电池组件、余热回收单元和辅助单元等集成为一台微型燃料电池热电联产系统样机。测试了该样机的启动时间、典型操作条件下的合成气组成以及系统的电效率、热效率和总效率，并将该样机与微型热电联产产品Ene-Farm和Ene-Farm type S进行了比较。测试结果显示样机可以在1小时内启动；合成气中CO浓度小于10ppm，能够满足燃料电池对合成气的需求；样机的电功率为200W、热功率为530W、电效率为15.4%、热效率为40.9%；与日本的两款已经上市的微型热电联产产品相比，在技术指标上该样机还有很大差距，但是在价格上本样机有很大的优势。
[Abstract]:Micro cogeneration system is a miniaturized energy conversion device.It can convert LPG or other forms of fuel into electricity and heat simultaneously in a compact system, which improves the efficiency of energy utilization, and is of great significance to energy conservation and emission reduction, and to the realization of the energy planning target of the 12th Five-Year Plan.Five typical cities with different climatic zones in China (Changchun, Beijing, Xi'an,A typical household in Shanghai and Guangzhou analyzed the matching degree of the two products and the amount of CO2 emission reduction and the economic benefits of the household when using four miniature cogeneration products (Ene-Farm-Farm type Scowillery / Whisper Gen).Under the conditions of different electricity price, gas price and micro cogeneration product price, the economic income and investment payback period of these typical families in using the typical miniature cogeneration products are investigated.The results show that, compared with the traditional energy access methods of ordinary Chinese households, micro cogeneration products can greatly reduce CO2 emissions, and at current electricity prices, gas prices,In the case of heating prices and the prices of micro-cogeneration products, the prices of micro-cogeneration products are too high compared with traditional energy acquisition methods.Most of the target prices for micro-cogeneration products for typical households in each city range from 5,000 to 15,000 yuan / kWe, which is basically in line with the price expected by the US Department of Energy; the price of the mini-cogeneration system is basically in line with that of the US Department of Energy.Electricity price and gas price have important influence on economic saving index and investment payback period.The higher the price of the micro fuel cell cogeneration system, the higher the gas price, the longer the investment payback period, the smaller the economic return; the higher the electricity price, the smaller the investment payback period and the greater the economic benefit.The CO removal unit, fuel cell assembly, waste heat recovery unit and auxiliary unit of natural gas hydrogen production unit are integrated into a miniature fuel cell cogeneration system prototype.The start-up time of the prototype, the composition of syngas under typical operating conditions, and the electrical efficiency, thermal efficiency and total efficiency of the system were tested. The prototype was compared with Ene-Farm and Ene-Farm type S, a miniature cogeneration product.The test results show that the prototype can be started within 1 hour, and the CO concentration in the syngas is less than 10 ppm, which can meet the demand of the fuel cell for the syngas.The electric power of the prototype is 200W, the thermal power is 530W, the electric efficiency is 15.4W, and the thermal efficiency is 40.90.Compared with the two mini cogeneration products that have been put on the market in Japan, there is still a big gap in the technical index of the prototype, but the prototype has a great advantage in price.
【学位授予单位】：华南理工大学
【学位级别】：硕士
【学位授予年份】：2014
【分类号】：TM911.4

【共引文献】