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城市化进程的加快意味着城市和国际组织需要去寻找各种能够提高能源效率和减少空气中污染物排放的方法。冷热电联产(CCHP)系统可以同时供暖、制冷和发电,具有提高城市或城市区域能源发电效率的潜力。本研究的目的是在满足建筑热需求(供热和制冷)的各种运行条件下,对亚特兰大大都市区内的五种常见建筑类型在采用CCHP系统时的发电耗水、CO_2和NO_x排放,及其经济性进行评价。对于大多数采用或不采用净计量策略的建筑类型来说,以满足每小时热需求去运行CCHP系统均可减少CO_2的排放量。该系统能否对这些建筑类型产生经济效益,主要取决于天然气的价格、净计量策略的采用和假定的CCHP系统的成本结构。当建筑物采用净计量策略并且CCHP系统是以满足建筑物每年的最大热需求而运行时,CCHP系统的发电耗水量和NO_x的排放量均有最大限度的减少,尽管此时该运行情景会增加温室气体排放和发电成本。CCHP系统对中型办公楼、大型办公楼和多户型住宅建筑更经济、实用。
The acceleration of urbanization means that cities and international organizations need to find ways to increase energy efficiency and reduce air pollutant emissions. The CCHP system has the potential to heat, cool and generate electricity at the same time, increasing the efficiency of energy generation in urban or urban areas. The purpose of this study was to determine the power generation water consumption, CO 2 and NO x emissions of CCHP systems for five common building types in the Atlanta metropolitan area under various operating conditions that meet the building thermal needs (heating and cooling) And its economic evaluation. For most building types with or without net metering strategies, running CCHP systems to meet hourly heat demand can reduce CO 2 emissions. Whether or not the system is economically viable for these building types depends primarily on the price of natural gas, the adoption of net metering strategies, and the assumed cost structure of the CCHP system. When buildings adopt a net metering strategy and the CCHP system is operated to meet the annual maximum heat demand of the building, the CCHP system generates both a reduction in electricity generation and NO x emissions to a minimum, although this scenario is likely to increase Greenhouse gas emissions and generation costs. CCHP system for medium-sized office buildings, large office buildings and multi-family residential building more economical and practical.