School of Architecture, Harbin Institute of Technology, Harbin, Heilongjiang, 150001, China; Key Laboratory of Cold Region Urban and Rural Human Settlement Environment Science and Technology, Ministry of Industry and Information Technology, Harbin, Heilongjiang, 150001, China.
China Academy of Urban Planning & Design, Beijing, 100037, China.
J Environ Manage. 2022 Sep 1;317:115461. doi: 10.1016/j.jenvman.2022.115461. Epub 2022 Jun 5.
The collection radius of biomass raw materials is an important factor affecting the volume of raw materials for energy utilization. At present, it is usually studied based on a single biomass combined heat and power (CHP) plant. However, as the heat transfer threshold of biomass CHP plant is limited, it is necessary to consider the optimal collection radius and biomass raw material allocation under the distribution mode of multiple power plants to improve the overall utilization rate of raw materials. Biomass raw material collection distance threshold (BCDT) refers to the maximum road length between the resource point (that allows the transportation of raw materials to the biomass CHP plant) and the biomass CHP plant. Under the mode of multi-power plant planning, the greater the BCDT is, the more destinations there will be for raw materials to be transported to from the same resource point, and the more flexible the transportation plans and allocation of transportation volumes will be. This also means more raw materials can be ultimately used for energy utilization, which leads to higher transportation cost. Therefore, determining the appropriate BCDT plays a key role in the unified planning of biomass raw materials. Based on the limitation of heat transfer threshold, this paper carries out multi-power plant planning with Fuxin City as the research object. Based on such planning, ArcGIS is used to generate biomass raw material planning schemes with different BCDTs. Then the transportation cost and energy surplus factor (ratio of renewable resource potential to energy demand) of each scheme are calculated and compared. The results show that there is a positive correlation between BCDT and the energy surplus factor. With the increase of BCDT, the growth rate of the energy surplus factor gradually becomes slower. The study also allows to set the utilization threshold of biomass energy utilization capacity and obtain the corresponding BCDT. In order to achieve a higher energy surplus factor, it is recommended that 40 km be used as the BCDT when carrying out uniform planning for biomass raw materials. At this time, the utilization of biomass energy utilization capacity is 75%, which can achieve a high degree of energy self-sufficiency and ensure its economic competitiveness.
生物质原料收集半径是影响能源利用原料量的重要因素。目前，通常基于单个生物质联合热电联产（CHP）厂进行研究。然而，由于生物质 CHP 厂的传热阈值有限，有必要考虑在多厂分布模式下的最佳收集半径和生物质原料分配，以提高原料的整体利用率。生物质原料收集距离阈值（BCDT）是指资源点（允许将原料运输到生物质 CHP 厂的位置）和生物质 CHP 厂之间的最大道路长度。在多厂规划模式下，BCDT 越大，从同一资源点运输到生物质 CHP 厂的目的地就越多，运输计划和运输量的分配就越灵活。这也意味着最终可以使用更多的原料进行能源利用，从而导致更高的运输成本。因此，确定合适的 BCDT 在生物质原料的统一规划中起着关键作用。基于传热阈值的限制，本文以阜新市为研究对象进行多厂规划。在此规划基础上，利用 ArcGIS 生成具有不同 BCDT 的生物质原料规划方案。然后计算和比较每个方案的运输成本和能源剩余系数（可再生资源潜力与能源需求之比）。结果表明，BCDT 与能源剩余系数之间存在正相关关系。随着 BCDT 的增加，能源剩余系数的增长率逐渐变慢。该研究还可以设定生物质能源利用能力的利用阈值，并获得相应的 BCDT。为了实现更高的能源剩余系数，建议在进行生物质原料的统一规划时使用 40km 作为 BCDT。此时，生物质能源利用能力的利用率为 75%，可以实现较高的能源自给自足，并确保其经济竞争力。
