York Ylca 12, Руководство по установке

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On design glycol concentration, apply the capacity correcting factors x 1,015 and power x 1,005
(see
Correcting factors for other glycol concentrations , see on page 12).
Applying these factors to the selection: YLCA 5
Capacity = 3,44 x 0,987 x 0,973 x 1,015 = 3,35 kW
Comp. power = 1,35 x 0,995 x 1,020 x 1,005 = 1,37 kW
For the specified glycol concentration and a ‑4 °C outlet temperature, Figure 3 shows a 0,248 glycol
factor. Thus, the flow rate can be determined with the formula appearing in
Selection guide (YLCA/
YLHA) , see on page 4.
3,35 [kW] =
(1 ‑ (-4)) x Flow rate [l / s]
0,248
Flow rate =
3,35 x 0,248
= 0,166 [l / s] or 598 [l / h]
5
This covers the Limits of Use.
The evaporator pressure drop can be determined by taking the water pressure drop value for a YLCA
unit and multiplying it by the correction factor (see
Glycol concentration and correcting tables , see on
page 10) for a 30% concentration and an average temperature of ‑1,5 °C, i.e.:
-1,5 °C=
1 + (-4)
2
42 kPa x 1,22 = 51,2 kPa.
1 Installation manual
1.4 Selection guide (YLCA/YLHA)
8