The selection criteria depends on the calculation mode
Mode: Cooling, Heating
IN MANIFOLDS
The software selects the IN manifolds with minimum external diameter such that:
velocity inside manifolds <= velocity inside tube
OUT MANIFOLDS
They are selected equal to IN manifolds
Mode: Condensing
IN MANIFOLDS
The software selects the IN manifolds with minimum external diameter such that:
velocity (gas) inside manifolds <= velocity inside tube (gas)
OUT MANIFOLDS
The software selects the OUT manifolds with previous external diameter of the IN MANIFOLDS
Mode: Direct Expansion
IN MANIFOLDS
Nothing
OUT MANIFOLDS
velocity (gas) inside manifolds <= velocity inside tube (gas)
Mode: Steam
IN MANIFOLDS
The software selects the IN manifolds with minimum external diameter such that:
velocity (gas) inside manifolds <= velocity inside tube (gas)
OUT MANIFOLDS
The software selects the OUT manifolds with previous external diameter of the IN MANIFOLDS
Mode: Pump evaporator
IN MANIFOLDS
The software selects the IN manifolds with minimum external diameter such that:
velocity (liquid) inside manifolds <= velocity inside tube (liquid)
OUT MANIFOLDS
They are selected equal to IN manifolds