Abstract This article discusses the effect of application of antifreeze substances on thermohydraulic parameters and energy consumption of a heating installation with convective radiators. A comparative theoretical and computational analysis is performed for water and two alternative heating mediums: a 50% aqueous solution of ethylene glycol and propylene glycol. It is indicated that antifreeze substances and their aqueous solutions may cause a reduction in the radiator heat output and an increase in hydraulic resistance, which results in the entire system higher energy consumption and lower efficiency. It is then justified that the heating installation design should take account of the use of a glycol aqueous solution instead of water to avoid an excessive drop in the installation energy indicators and prevent deterioration of the building thermal comfort conditions.

中文翻译：

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防冻剂使用对供暖装置热工水力参数及能耗的影响

摘要 本文讨论了使用防冻剂对带对流散热器供暖装置的热工水力参数和能耗的影响。对水和两种替代加热介质进行了比较理论和计算分析：乙二醇和丙二醇的 50% 水溶液。表明防冻物质及其水溶液可能导致散热器发热量减少，水力阻力增加，导致整个系统能耗较高，效率较低。