某超高层建筑多联机空调室外机方案CFD模拟及优化

CFD simulation and optimization of multi-split air conditioning outdoor unit scheme for a super high-rise building

对某实际超高层建筑工程多联机空调室外机方案进行了CFD模拟和优化。超高层建筑室外机方案成功的一个关键因素是采取措施减弱、避免热浮力效应对室外机运行环境的不利影响。模拟结果显示,设置侧面进风通道、室外机错位摆放、去层摆放的措施对热浮力效应起到了减弱和近似切断的作用,对室外机运行环境的改善较为明显。在避难层布置室外机是避免热浮力累积效应比较行之有效的措施。考核了室外风速对室外机运行的影响。

Simulates and optimizes the arrangements of the multi-split air conditioning outdoor units for a super high-rise building using CFD method. A key factor of a successful outdoor unit scheme is taking the measures to reduce or avoid the adverse influence of the thermal buoyancy effect on the outdoor units＇ operating environment. The simulation results indicate that adopting measures of the side air inlet channel, outdoor units dislocation and deleting placement can reduce and almost cut off the influence of the thermal buoyancy effect, which significantly improves the outdoor units＇ operating environment. Installing the outdoor units on the refuge floor is a reasonable method to avoid the thermal buoyancy accumulative effect. In addition, studies the effect of the air velocity on the outdoor units＇ operation.