By heat balance analysis of the whole regenerative system, which is regarded as a closed thermodynamic system, the calculation model on the influence of HPs removal on heat economy of unit is derived.

以汽轮机功率方程和锅炉吸热量方程为基础，并将机组的整个回热系统视为一闭口热力系统，通过对其的热平衡分析，得到了高加切除对机组热经济性影响的计算模型。

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Setting up an energy balance analysis model of heavy oil gathering system and gives evaluation index and calculation formula.

建立了稠油集输系统的能量平衡分析模型，给出了评价指标及其计算公式。

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In the view of the distribution and balance of energy, mathematic model of biomass gasification and waste incineration combined power generation system was simplified in this paper.

从系统能量分配和平衡的角度，简化了生物质气化与废弃物焚烧联合发电系统的数学模型。

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