School of Environment and Energy, South China University of Technology, Guangzhou, 510006, People's Republic of China.
The Key Laboratory of Pollution Control and Ecosystem Restoration in Industry Clusters, Ministry of Education, Guangzhou, 510006, People's Republic of China.
Environ Sci Pollut Res Int. 2017 Oct;24(30):23508-23517. doi: 10.1007/s11356-017-9943-z. Epub 2017 Aug 28.
The temperature is the essential factor that influences the efficiency of anaerobic reactors. During the operation of the anaerobic reactor, the fluctuations of ambient temperature can cause a change in the internal temperature of the reactor. Therefore, insulation and heating measures are often used to maintain anaerobic reactor's internal temperature. In this paper, a simplified heat transfer model was developed to study heat transfer between cylindrical anaerobic reactors and their surroundings. Three cylindrical reactors of different sizes were studied, and the internal relations between ambient temperature, thickness of insulation, and temperature fluctuations of the reactors were obtained at different reactor sizes. The model was calibrated by a sensitivity analysis, and the calibrated model was well able to predict reactor temperature. The Nash-Sutcliffe model efficiency coefficient was used to assess the predictive power of heat transfer models. The Nash coefficients of the three reactors were 0.76, 0.60, and 0.45, respectively. The model can provide reference for the thermal insulation design of cylindrical anaerobic reactors.
温度是影响厌氧反应器效率的重要因素。在厌氧反应器的运行过程中，环境温度的波动会引起反应器内部温度的变化。因此，通常采用保温和加热措施来维持厌氧反应器的内部温度。本文建立了简化的传热模型，以研究圆柱形厌氧反应器及其周围环境之间的传热。研究了三个不同尺寸的圆柱形反应器，在不同的反应器尺寸下，获得了环境温度、保温层厚度和反应器温度波动之间的内部关系。通过敏感性分析对模型进行了校准，校准后的模型能够很好地预测反应器温度。纳什-苏特克里夫模型效率系数用于评估传热模型的预测能力。三个反应器的纳什系数分别为 0.76、0.60 和 0.45。该模型可为圆柱形厌氧反应器的保温设计提供参考。
