秸秆基建筑保温材料的节能减排分析

Energy-Saving and CO_2-Emission-Reducing Features of Straw-Based Building Insulation Material

计算了秸秆基建筑保温材料的年节能量,并与等量秸秆用作燃料释放的热量进行对比;估算了秸秆基建筑保温材料的CO2减排量;对秸秆基建筑保温材料和发泡聚苯乙烯（EPS）材料生产过程的能耗、CO2排放量和经济性进行对比分析。结果表明,秸秆用于建筑保温在采暖期节能约可高达51 MJ.kg-1.a-1,明显高于其直接用作燃料所释放的热量（7.1~16.7 MJ.kg-1）。若中国北方农村有10万户居民应用特定的秸秆基建筑保温材料,10a的CO2减排量将达到1 600万t以上。在达到相同保温效果情况下,秸秆基材料生产过程中的总能耗和CO2排放量均低于EPS材料,经济性也优于EPS材料。因此,宜在中国北方农村地区大力推广秸秆基建筑保温材料。

How much energy the use of the straw-based building insulation material（SBBIM） in question might save annually was calculated and how much CO2 emission might be reduced by the use was estimated against the heat the burning of the equivalent amount of straws might release.A comparison analysis was conducted of SBBIM and expandable polystyrene（EPS） in energy consumption,CO2 emissions and economy during their production processes.Used as building insulation,straw could save as much as 51 MJ·kg-1·a-1,significantly higher than the energy it released as fuel（7.1～16.7 MJ·kg-1）;if 100 000 rural households in North China are to use the SBBIM,it may reduce CO2 emission by 16 million tons or more in 10 years.Being the same in heat insulation effect,SBBIM consumes less energy and emits less CO2 than EPS in production,but overmatches EPS in economy.It is,therefore,concluded that it is advisable to extrapolate the technology of using straw as building insulation material in the broad rural area of North China.