【Key words】 Natural gas; Heating; Flue gas; Condensing heat exchangers; Heat energy lization
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Best running condition obtained, returning water temperature and flue gas Re on thermal efficiency of condensing heat exchanger,and experimental correlation is summarized, all of these establish foundation for further optimizing similar equipments.
为不同系列燃气锅炉的冷凝换热器优化奠定基础。
参考来源 - 燃气锅炉冷凝换热器的研究The results of calculation and experiment show that the conventional gas-fired boiler equipped with a condensing heat exchanger can effectively recover the waste heat of flue gas, thus, the thermal efficiency of the boiler is enhanced by about 10%.
设计计算结果和实测数据均表明，常规燃气锅炉加装冷凝换热器，可有效地回收烟气余热，锅炉热效率提高10％左右。 针对供热系统中单台大功率锅炉在全年大多时间能力过剩而导致供热效率下降的问题，设计了模块组合式铜管燃气热水锅炉，并进行了实验研究。
参考来源 - 燃气锅炉余热回收的理论与应用·2,447,543篇论文数据，部分数据来源于NoteExpress
本文建立了空气冷凝换热器简化动态模型及凝结液膜厚度模型。
A simplified dynamic model of air condenser and the model of its liquid film are driven in this paper.
根据实验研究结果拟合出了肋片管式冷凝换热器烟气强迫对流凝结换热的实验关联式。
The experimental correlations for the forced convection-condensation heat transfer of flue gas in the heat exchanger are obtained by the experimental study result.
一效列管换热器中出来的冷凝液被用来预热进料。
Condensate from the first-effect calandria is used for preheating the feed.
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