A Study on the Control Method of VAV Terminal Unit through the Multizone Simulation

摘要

The objective of this study was verified a control method for the minimum air flow rate of a VAV terminal unit at a multi-zone.The minimum air flow rate of the VAV terminal unit is the key factor affecting the thermal comfort,indoor air quality (IAQ),stratification and energy consumption,depending on the operating mode of the VAV system.Therefore,selecting the proper minimum air flow is very important.In this study,an algorithm was verified considering the IAQ through the multi-zone simulation.The integrated control algorithm with an air flow increase model in the VAV terminal unit and outdoor air intake rate increase model in the AHU was developed by comparing the energy consumption.Finally,the existing and proposed control algorithms were compared through a simulation.The proposed method was found to be more effective than the existing control method.The proposed VAV terminal unit control method satisfies all the conditions of indoor thermal comfort,IAQ.As a result of the energy comparison with the existing control method,the method satisfies not only the indoor thermal comfort and IAQ,but also reduces the energy consumption.