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首页> 外文会议>ASME/JSME thermal engineering joint conference;AJTEC2011 >TRANSIENT ANALYSIS OF MICROORGANISM TEMPERATURE AND EVAPORATIVE LOSSES IN AN ALGAE BIOFILM PHOTOBIOREACTOR
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TRANSIENT ANALYSIS OF MICROORGANISM TEMPERATURE AND EVAPORATIVE LOSSES IN AN ALGAE BIOFILM PHOTOBIOREACTOR

机译：藻类生物膜光生物反应器中微生物温度和蒸发损失的瞬态分析

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This study describes the thermal modeling of a novel algal biofilm photobioreactor aimed at cultivating algae for biofuel production. The thermal model is developed to assess the photo bioreactor's thermal profile and evaporative water loss rate for a range of environmental parameters, including relative humid ity, ambient air temperature, solar irradiation, and wind speed. First, a 24 hour simulation of the system has been performed using environmental data for Memphis, TN, USA on a typical spring day to assess the diurnal variations in system perfor mance. Then, a sensitivity analysis is performed to assess the effect of each environmental parameter on the temperature and evaporative losses of the photobioreactor. It is observed that be cause of the high surface area-to- volume ratio of the system, the temperature of the system exceeds that of the maximum ambient temperature during daylight hours by approximately 0.5 °C and is lower than the minimum ambient temperature at night by ap proximately 1.4 °C because of evaporative and radiative cooling. Furthermore, without active cooling, the characteristic evapora tive water loss from the system is approximately 4.8 L/m~2-day.
机译：这项研究描述了旨在培养藻类以生产生物燃料的新型藻类生物膜光生物反应器的热模型。开发热模型的目的是针对一系列环境参数（包括相对湿度，环境空气温度，太阳辐射和风速）评估光生物反应器的热曲线和蒸发失水率。首先，在典型的春日期间，使用美国田纳西州孟菲斯市的环境数据对系统进行了24小时仿真，以评估系统性能的日变化。然后，进行敏感性分析以评估每个环境参数对光生物反应器的温度和蒸发损失的影响。可以看出，由于系统表面积/体积比高，白天系统的温度比最高环境温度高约0.5°C，低于夜间的最低环境温度。由于蒸发和辐射冷却，温度大约在1.4°C。此外，在没有主动冷却的情况下，系统的特征性蒸发水损失约为4.8 L / m〜2天。

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