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Relative Humidity control in DesignBuilder

Hi,

I am new user of DesignBuilder (v 6.1). For a project, I am trying to identifying suitable HVAC systems from predefined templates in DesignBuilder. The conditioned space is a single zone archive where temperature and humidity needs to be controlled (16-20°C and 45-55%). The idea is to understand which HVAC systems can realistically achieve closer to this targets. However, I tried with following HVAC template (Fan Coil Unit, 4 pipe, Air cooled Chiller) as shown below: FCU

However, the system fails to control the Relative humidity despite the humidity control is activated in "Activity" Tab with appropriate values.

Comfort

I was wondering if such space can be conditioned with any specific localized humidification control system in the zone.

Edit1: HVAC diagram of Unitary Heat Cool system after adding Humidifier in AHU https://ibb.co/qBgnMQT

Relative Humidity control in DesignBuilder

Hi,

I am new user of DesignBuilder (v 6.1). For a project, I am trying to identifying suitable HVAC systems from predefined templates in DesignBuilder. The conditioned space is a single zone archive where temperature and humidity needs to be controlled (16-20°C and 45-55%). The idea is to understand which HVAC systems can realistically achieve closer to this targets. However, I tried with following HVAC template (Fan Coil Unit, 4 pipe, Air cooled Chiller) as shown below: FCU

However, the system fails to control the Relative humidity despite the humidity control is activated in "Activity" Tab with appropriate values.

Comfort

I was wondering if such space can be conditioned with any specific localized humidification control system in the zone.

Edit1: HVAC diagram of Unitary Heat Cool system after adding Humidifier in AHU https://ibb.co/qBgnMQTAHU

Relative Humidity control in DesignBuilder

Hi,

I am new user of DesignBuilder (v 6.1). For a project, I am trying to identifying suitable HVAC systems from predefined templates in DesignBuilder. The conditioned space is a single zone archive where temperature and humidity needs to be controlled (16-20°C and 45-55%). The idea is to understand which HVAC systems can realistically achieve closer to this targets. However, I tried with following HVAC template (Fan Coil Unit, 4 pipe, Air cooled Chiller) as shown below: FCU

However, the system fails to control the Relative humidity despite the humidity control is activated in "Activity" Tab with appropriate values.

Comfort

I was wondering if such space can be conditioned with any specific localized humidification control system in the zone.

Edit1: HVAC diagram Please let me know if anyone know this. Any input regarding better humidity control along with other type of Unitary systems (Heated floor, Heat Cool Pump based system after adding Humidifier in AHUetc.) are also highly welcome.

Thanks,

Debayan