Author(s): Xiong Jian, Liu Yong, Cheng Linle
Pages: 72-77
Year: 2016 Issue:  1
Journal: Refrigeration & Air-Condition
Keyword:  powerhouse; airflow; Dynamo Floor; dome air flow;
Abstract: Build a physical model of BAIHETAN main underground powerhouse in a similar ratio of 1:20, by the law in a similar model to calculate the amount of air and heat of experimental models, then make hot state airflow test. By arranging temperature measuring points and speed measuring points in the electric power generation layer zone to analyze temperature and velocity distribution of model, and then calculate the temperature field and velocity field of prototypes to verify the feasibility of the design. Experiments were arranged four different conditions, according to experimental results known, the generator layer dome air flow organizational forms in a manner of vertical bottom feed and double outlet uniform airflow that enables a uniform temperature field and velocity distribution of workplace. The horizontal temperature distribution of the work area is: the temperature of installation field is relatively uniform and the temperature distribution of unit segment is slightly uneven. Temperature gradually increasing from installation segment to Unit 3 segment, but the overall temperature distribution is still relatively uniform, the temperature difference is not great. At the same time the work zone speed range 0.2~0.5m/s, to meet the"standard"requirement, and therefore this air program is reasonable and practicable.