12Specificationforweathergradeofcentralheatingenergy-saving本文件按照GB/T1.1—2020《標(biāo)準(zhǔn)化工作導(dǎo)則第1部分：標(biāo)準(zhǔn)化文件的結(jié)構(gòu)和起草規(guī)則》的規(guī)定本文件主要起草人：苗芮、孫玫玲、李明財(cái)、1集中供暖節(jié)能氣象等級(jí)劃分規(guī)范節(jié)能溫度energyefficiencyt注：?jiǎn)挝粸閿z氏度(℃)。集中供熱系統(tǒng)實(shí)際供熱負(fù)荷與設(shè)計(jì)負(fù)荷的比值（即實(shí)際室內(nèi)外溫差與設(shè)計(jì)溫差的比值供暖室外計(jì)算溫度outdoorcalculatedtemperatureforhe用于計(jì)算供暖設(shè)計(jì)負(fù)荷時(shí)所采用的室外溫度，為歷年年平均不保證5天的日集中供暖節(jié)能氣象等級(jí)weathergradeofcentralheatingenergy根據(jù)供暖節(jié)能溫度計(jì)算得到的、反映供暖負(fù)荷率4供暖節(jié)能溫度的計(jì)算TJ——節(jié)能溫度，單位為攝氏度(℃);T——代表觀測(cè)站某時(shí)段平均氣溫，單位為攝氏度(℃);2TR——太陽(yáng)輻射對(duì)氣溫的修正量，單位為攝氏度(℃),修正參考值見表1。修正量平均值，T雪2100注：天氣現(xiàn)象參見GB/T35663—2017，霾的等級(jí)參見QX/T113—2010。T30=Tin-(Tin-Tw)×30%···························································(2)T50=Tin-(Tin-Tw)×50%···························································(3)T60=Tin-(Tin-Tw)×60%···························································(4)T70=Tin-(Tin-Tw)×70%···························································(5)T80=Tin-(Tin-Tw)×80%···························································(6)T100=Tin-(Tin-Tw)×100%·························································(7)應(yīng)的節(jié)能溫度值，單位為攝氏度(℃),天津市各區(qū)不同等級(jí)供暖節(jié)能溫度閾值見附錄A；Tin——室內(nèi)溫度，單位為攝氏度(℃),按照18℃計(jì)算；Tw——供暖室外計(jì)算溫度，單位為攝氏度(℃),天津市各區(qū)供暖室外計(jì)算溫度見附錄A中T100。根據(jù)節(jié)能溫度所處的閾值范圍，將天津市各區(qū)的集中供暖節(jié)能氣象等級(jí)由低到高分為7個(gè)等級(jí)，見℃%30注：天津市各區(qū)的集中供暖節(jié)能氣象等級(jí)劃分示例見附錄B。3單位為攝氏度(℃);4平均氣溫市區(qū)為0℃,薊州區(qū)為-4℃,那么市區(qū)和薊州區(qū)該日集中供暖節(jié)能氣象等級(jí)確定過(guò)程如下：b)根據(jù)節(jié)能溫度所處閾值范圍確定所在區(qū)的集中供暖節(jié)能氣象等級(jí)：由B.1可知，上述某日供7080<r≤80%；薊州區(qū)集中供暖節(jié)能氣象等級(jí)為6級(jí)，屬于很高級(jí)別，應(yīng)高