| 摘要: |
| 超高层电梯井内冬季烟囱效应明显，可能造成电梯门开关障碍，产生明显的气动噪音。本文分析了风量为2.12~6.68 m3/s的自然通风冷却方案，冷板高度为10 m、温度为10 ℃的辐射冷板冷却方案，制冷量为20~100 kW的多联机冷却方案等不同冷却方案对电梯井烟囱效应的改善效果。提出了结合自然通风和热泵技术的超高层电梯井热害噪音治理方案，并通过实际测试验证了所提出的方案的可行性。结果表明：当采用自然通风协同多联机的冷却方案时，电梯门两侧的压差比单独采用自然通风冷却方案时的压差低49 Pa，比单独采用多联机冷却方案时的压差低20.4 Pa。同时，采用自然通风协同多联机冷却方案时的噪音比单独采用自然通风冷却方案时的噪音低2.1 dB，比单独采用多联机冷却方案时的噪音高1.6 dB。因此，采用自然通风与多联机协同的方法可有效降低烟囱效应，同时可以有效控制电梯井内的噪音。 |
| 关键词: 热泵 烟囱效应 电梯井 热压 电梯热害噪音 超高层建筑 |
| DOI： |
| Received:December 31, 2020Revised:June 14, 2021 |
| 基金项目: |
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| A Novel Method of Cooperating with Natural Ventilation and Heat Pump to Control the Thermal Noise of Super High-rise Elevator Shaft |
|
Chun Liang1, Gong Guangcai1, Nie Meiqing2, Fang Xi1, Li Gaofeng2
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| (1.College of Civil Engineering, Hunan University;2.Citic Heye Investment Co., LTD.) |
| Abstract: |
| The chimney effect in a super high-rise elevator shaft is significant in winter, which may cause difficulty in opening and closing the elevator doors and can produce obvious aerodynamic noise. In this study, the improvement effect of different cooling methods on the elevator shaft chimney effect is analyzed, including natural ventilation cooling with air volume of 2.12–6.68 m3/s, a radiant cooling panel with height of 10 m and temperature of 10 ℃, and a variable refrigerant volume cooling system (VRV) with cooling capacity of 20–100 kW. A super-high-rise elevator shaft thermal noise control scheme is proposed that combines natural ventilation and heat pump technology, and the feasibility of the proposed scheme is verified through on-site tests. The results show that when both natural ventilation and VRV systems are adopted, the pressure difference between the two sides of the elevator door is 49 Pa less than when only the natural ventilation system is adopted, and is 20.4 Pa less than when only the VRV system is adopted. At the same time, when both natural ventilation and the VRV system are adopted, the noise is 2.1dB less than that when only the natural ventilation scheme is adopted, and it is 1.6 dB higher than the noise when only the VRV system is adopted. Therefore, the simultaneous use of natural ventilation and VRV cooling systems can effectively reduce the chimney effect and simultaneously control the noise in the elevator shaft. |
| Key words: heat pump chimney effect elevator shaft thermal pressure elevator thermal noise super high-rise building |
