垂直埋管地源热泵空调系统碳排放评估

Assessment on carbon emission of vertical buried pipe ground source heat pump air-conditioning system

建立垂直埋管地源热泵空调系统碳排放计算方法,计算某工程生命周期内空调系统的碳排放。结果表明:风管、水管、地埋管占生产阶段碳排放比重分别为43.13%、32.38%、7.99%;钻孔施工占地埋管施工阶段碳排放的比重为87.06%;生产、运输、施工、运行阶段占空调系统生命周期(20年)碳排放的比重分别为3.41%、0.02%、1.61%、94.96%;空调系统生命周期碳排放随着生命周期增长而增加,但生命周期内年均碳排放前5年有一定程度降低,5年后基本趋于平缓。

The calculation method on carbon emission of vertical buried pipe ground source heat pump air conditioning system is established to calculate the life-cycle carbon emission on air conditioning system of a project. The results show that air pipe, water pipe and buried pipe accounted for 43.13%, 32.38% and 7.99% of carbon emissions in production stage respectively. The proportion of drilling carbon emission in the construction stage of buried pipe is 87.06%.Production, transportation, construction and operation stages account for 3.41%, 0.02%, 1.61% and 94.96% of the life-cycle(20 years) carbon emission of air conditioning system, respectively. With the increase of life-cycle, the life-cycle carbon emission of air conditioning system increases significantly, but the annual average life-cycle carbon emission decreases slightly in the first 5 years, and basically tends to be flat after 5 years.