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首页> 外文期刊>Building and Environment >Effect of population age structure on capacity for biomass cogeneration: A case study of a rural area in China
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Effect of population age structure on capacity for biomass cogeneration: A case study of a rural area in China

机译：人口年龄结构对生物质热电联产能力的影响：以中国农村为例

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摘要

To improve the overall efficiency of biomass cogeneration, a case study was conducted in a rural area to investigate the effect of the age structure of the local population on the total capacity of the biomass cogeneration system. The age-structure-based energy consumption data of 150 households were obtained through a questionnaire survey. The data treatment and function fitting yielded functional relationships between the average family age and the annual household electricity, heat, total energy consumptions and the heat-electricity ratio of biomass cogeneration. Conclusions can be summarized as follows: (1) The annual household electricity, heat and total energy consumptions peak at average family ages of approximately 40, 60 and 55, respectively. The heat-electricity ratio of biomass cogeneration peaks at an average family age of approximately 68. (2) During the heating period, the heat-electricity ratio of biomass cogeneration is positively related to the difference between indoor and outdoor temperatures, while during the non-heating period, the ratio is stable. (3) The total capacity of biomass cogeneration estimated based on the age structure of the local population (Method A) may not be consistent with that estimated based on the per-capita energy consumption (Method B). As the total energy consumption varies in a parabolic pattern with the average family age, the estimate yielded by Method A is smaller than that yielded by Method B if the average family age is smaller than 35 or larger than 73; the two methods yield similar estimates if the average family age falls in the range of 35-73.
机译：为了提高生物质热电联产的整体效率，在农村地区进行了案例研究，以调查当地人口的年龄结构对生物质热电联产系统总容量的影响。通过问卷调查获得了150户基于年龄结构的能源消耗数据。通过数据处理和函数拟合，得出了平均家庭年龄与年家庭用电，热量，总能耗以及生物质热电联产的热电比之间的函数关系。结论可以归纳如下：（1）家庭年平均用电，热量和总能耗分别在家庭平均年龄分别为40岁，60岁和55岁左右达到峰值。生物质热电联产的热电比在家庭平均年龄大约为68岁时达到峰值。（2）在供暖期间，生物质热电联产的热电比与室内和室外温度之间的差异呈正相关，而在非加热期间-加热期间，比例稳定。 （3）根据当地人口的年龄结构估算的生物质热电联产总容量（方法A）可能与基于人均能源消耗估算的生物质热能发电总量（方法B）不一致。由于总能源消耗随平均家庭年龄呈抛物线型变化，如果平均家庭年龄小于35岁或大于73岁，则方法A得出的估计值将小于方法B得出的估计值;如果平均家庭年龄在35-73之间，则两种方法得出的估计值相似。

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