搜题

下列关于热水供应系统的热源选择说法中,哪几项错误?( )

专业知识(给排水) 2023-09-12

A.集中热水供应系统利用工业废热时,废气、烟气温度不宜低于400℃
B.北方冬季采暖地区,当无条件利用工业余热、废热、地热或太阳能等热源时,宜优先采用热力管网
C.日照时数大于1400h/年且年太阳辐射量大于4200MJ/m的地区宜优先采用太阳能
D.局部热水供应系统宜采用太阳能、电能等

参考答案:BC

参见《建筑给水排水设计规范》5.2.2条注1,可知A项正确;参见《建筑给水排水设计规范》5.2.3条可知只有在全年供热的热力管网才考虑优先考虑而不是冬季采暖时供热的热力管网,故B项错误;参见《建筑给水排水设计规范》5.2.2A条可知,选项C片面,还必须是在年极端气温不低于-45℃前提下;参见《建筑给水排水设计规范》5.2.6条可知D项正确。

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