基于调试数据对PCR实验室通风空调系统的思考

Consideration of ventilation and air conditioning system in PCR laboratory based on commissioning data

以某医院PCR实验室为例,剖析调试过程中出现的问题。通过现场调研,对影响压力及压力梯度的关键参数进行了检测,包括围护结构的严密性、风机性能与系统风量、送(排)风口风量、通风系统的严密性。检测结果发现,建筑围护结构的气密性是形成压力梯度的前提条件,运行调试应在围护结构完成密封的条件下进行。在此基础上,还需要将通风空调系统调试至设计工况,才能保证各区域之间压力梯度的实现。基于调试数据,总结了设计通风空调系统应注意的事项。

This paper takes the PCR laboratory of a hospital as an example to analyse the problems that occur during the commissioning process.Through on-site investigation,the key factors affecting the pressure and pressure gradient are tested,including the tightness of the envelope,fan performance and system air volume,the air volume of air supply(exhaust)outlets,and the air leakage rate of the ventilation system.The test results show that the tightness of the building envelope is a prerequisite for the formation of pressure gradient,and the operation and commissioning should be carried out under the condition that the envelope is sealed.On this basis,it is also necessary to adjust the ventilation and air conditioning system to the design conditions to ensure the realization of the pressure gradient between the regions.Finally,based on the commissioning data,the problems deserving to be noticed in the design of the ventilation and air conditioning system are summarized.