中文摘要：

直接空冷高背压供热是适应复杂环境条件,降低火力发电煤耗和减少污染排放的有效途径。考虑环境因素对机组供热负荷与冷端释热特性的影响,基于EES和Ebsilon平台建立直接空冷高背压供热机组的冷端传热和供热特性模型,分析供热系统变工况运行特性;得到量调节和质调节模式下不同列风机隔离运行时的冷端传热特性、空冷岛耗功和机组净功率,确定机组供热系统和空冷系统的最佳运行方式,为直接空冷高背压供热机组多冷源耦合特性,余热梯级高效利用与变工况协同优化提供参考。

英文摘要：

It is an effective way for the direct air-cooled high pressure heating to reduce the coal rate and pollutant emission. Considering the heat supply demand and cold-end performance, EES （Engineering Equation Solver） and Ebsilon platform were introduced to model the heat transfer characteristics of heating system and air-cooled island for illustrating the heating system in winter. The energy consumption and net power output were discussed in volume regulation and quality regulation mode of heating system. The optimized operation mode of both heating system and air-cooled system were determined, taking great reference for the collaborative operation optimization of such system.