A660B Recirculation Duct Upgrade

A661B Recirculation Duct Upgrade

A661B Recirculation Duct Upgrade for A660 Base Unit allows the proportion of recirculated air to be varied and its effect upon the energy requirements for air conditioning to be investigated. Additional psychrometric measuring points supplied allow the enthalpy of two-mixed streams to be investigated.

Requires the A660 Air Conditioning Laboratory Unit for operation.

A660B Recirculation Duct Upgrade