论文部分内容阅读
集中供热是节约能源,减少环境污染的有效措施。据长春市采暖形式调查分析得知,采用小火炉、火坑,火墙取暖的占总建筑面积的28.5％,采用分散锅炉取暖的占64.4％,利用电厂余热集中供热的仅占7.1％。在“七五”期间,长春市建设了2台20万千瓦的凝气机组热电厂,提供采暖负荷1088×10~9J/h(260Mkcal/h)和生产用蒸汽80T/h,供500万m~3的采暖面积。按这一设计,当一机事故时能满足70％的热负荷,符合热电厂设计规范。但是,热电厂2台机组同时运行最大能提供1507×10~9J/h(360Mkcal/h) 采暖负荷和80t/h生产用蒸汽,供700万m~2的采暖面积。如果要利用这部分供热潜力,就要解决采暖最冷月份(-23℃)时需要的最大负荷
Central heating is an effective measure to save energy and reduce environmental pollution. According to the analysis of heating patterns in Changchun City, it is known that small furnaces, fire pits, and wall fires account for 28.5% of the total building area, 64.4% for decentralized boilers, and only 7.1% for waste heat from power plants. During the “7th Five-Year Plan” period, Changchun City built 2 sets of 200,000 kilowatts of coal-fired unit thermal power plants to provide heating load of 1088×10~9J/h (260Mkcal/h) and production steam of 80T/h for 5 million m~ 3 heating area. According to this design, when a machine accident can meet 70% of the thermal load, in line with thermal power plant design specifications. However, the simultaneous operation of two units in a thermal power plant can provide a heating load of 1507×10~9J/h (360Mkcal/h) and 80t/h of production steam, providing a heating area of 7 million m2. If you want to use this part of the heating potential, you need to solve the maximum load required during the coldest month of heating (-23°C)