| Autor: |
WANG Yan, LI Yanchi, LAN Jie, XIA Sanxian, YAN Qing, YU Weizhi, XIAO Yunting, YAN Tian, XU Xinhua |
| Předmět: |
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| Zdroj: |
Railway Standard Design; Oct2022, Vol. 66 Issue 10, p191-196, 6p |
| Abstrakt: |
To achieve the goals of carbon emission-peak and carbon neutrality, the energy conservation problem of subway air-conditioning system has become more and more prominent. Since the load of the subway equipment management room varies obviously with the start and stop of the equipment, the traditional air-conditioning system of constant air volume cannot change the air supply volume of the system, which would cause the waste of the cooling capacity. The air-conditioning system of variable air volume can be used to achieve the air supply on demand for different rooms at different times. This paper builds a simulation platform of the VAV air-conditioning system for a subway station in Zhengzhou and the platform is integrated with the load model of the subway equipment room to achieve on-demand air supply. The simulation platform is used to simulate the control characteristics and air volume characteristics of the VAV system. By adjusting the valve opening of the VAV-box terminal, the demanded air volume of the room is supplied on according to different load demands. The results show that the actual operating air volume basically matches the demand air volume and the deviation is less than 1%. The control effects of room temperature between the constant air volume system and the VAV system are compared. The room temperature with the constant air volume system is decreased to 34 °C, which is lower than the design temperature of 36 °. While, the room temperature with the VAV system can be precisely controlled at 36 °, and the waste of cooling capacity is avoided. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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