冷热电三联供系统研究(4):区域供冷和区域供热
Research of combined cooling heating and power systems (4): District cooling and heating
摘要：
区域供能是冷热电三联供系统（CCHP）的重要组成部分，对国内已建的区域供能系统，尤其是对区域供冷系统的经验和教训进行总结十分重要和必要。关于区域供冷系统，作者的观点是：冷价不是判断区域供冷系统经济性的指标，热网是影响区域供能系统经济性的主要因素，目前的设计方法需要改进和提高；并非任何一种冰蓄冷技术都适合在区域供能系统中应用，不合理的应用将适得其反；输送半径是个不确定性参数，合理确定供能面积和最远距离更为重要；负荷密度和同时使用系数决定了系统的负荷特性，需要正确设计，综合利用能源；地表水是区域供能系统的理想冷热源之一，需要因地制宜地利用；燃气CCHP系统是解决南方地区区域供热的最佳选择。
Abstract：
District energy supply system is an important part of the combined cooling heating and power (CCHP) system. It is very important and necessary to summarize the experience and lessons of the district energy system, especially the district cooling system, built in China. As to district cooling system, points out that the cold price is not an index to judge the economical efficiency of the district cooling system and heating network is a chief factor affecting the economical efficiency of the system, and the design methods used now need to be improved and advanced; it is not any form of ice storage that is suitable for applying to the district cooling system, and unreasonable application will result in undesirable results; the distribution radius is an uncertain parameter, and it is more important to determine reasonably the energy supply area and the farthest distance of distribution; load density and simultaneous use coefficient determine the system load characteristics of the system, and the system should be properly designed and utilize energy comprehensively; surface water is one of ideal cooling and heating sources for the district energy system, which needs to be fully used according to the local conditions; and natural gas CCHP system is the best choice for district heating in the southern regions of China.
Keywords:combinedcoolingheatingandpowersystem,districtcooling,districtheating,icestorage,heatpump