散热器对流采暖、低温地板辐射采暖热力学分析

摘要

In this paper, the forms and features of radiator convection heating system and floor radiant heating system were introduced. Based on thermodynamic analysis, the entropy change and exergy efficiency on these two common heating methods of these two heating system were discussed and calculated by entropy and exergy to analyzed the energy conservation. The results showed that entropy production of floor radiant heating was less than radiator convection heating, and exergy efficiency was greater, which meant the energy-saving effect of floor radiant heating was better compared to the radiator convection heating system.%介绍了散热器对流采暖和地板辐射采暖两种采暖方式的形式和特点,并以热力学分析为基础,从熵和炯两方面讨论计算了地板辐射采暖和散热器对流采暖这两种常用的采暖方式的熵变和(火用)效率,进而分析其节能性.结果表明,在相同供暖负荷条件下,地板辐射采暖的熵增较散热器对流采暖的熵增小,而(火用)效率大说明地板辐射采暖比散热器对流采暖节能效果好.