所属单位：建筑设备科学与工程学院

发表刊物：BIOSYSTEMS ENGINEERING

关键字：Tea brick fermentation chamber Vertical wall attached ventilation Numerical simulation Air distribution Evaluation index

摘要：In tea brick fermentation, the temperature in the fermentation chamber has an important influence on the reproduction and growth of the golden flower bacteria inside tea bricks. In order to form a uniform and suitable fermentation temperature, the study introduced an upward vertical wall attached ventilation based on the load distribution characteristics of the tea brick fermentation chamber and the practical placement of tea bricks on the shelf. The air distribution of upward vertical wall attached ventilation under different supply air temperature differences was numerically investigated by a mathematical model of flow and heat transfer. Furthermore, the results were compared with two other traditional ventilation modes, which are diffuser ventilation and displacement ventilation. The up- ward vertical wall attached ventilation demonstrated higher ventilation efficiency and least vertical temperature stratification due to its lower flow resistance. Thus, the tem- perature unevenness coefficient in the product area could be reduced by between 54.3% and 77.5% compared with the diffuser dilute ventilation and displacement ventilation. Moreover, the upward vertical wall attached ventilation could help to eliminate the indoor heat load during the fermentation of tea bricks, which increases the energy utilisation rate of supply air by 1.7%e18.5%. Therefore, the vertical wall attached ventilation can effec- tively improve the temperature distribution of the tea brick fermentation chamber and improve the energy utilisation of the air supply.

合写作者：刘立军,王赞社

第一作者：南晓红

论文类型：期刊论文

通讯作者：宁旭昊

卷号：198/235-237

ISSN号：1537-5110

是否译文：否

发表时间：2020-08-13