Table 2 The ranges of the dimensionless factors for the analyzed databank.

From: Reliable models for calculating the condensation heat transfer inside smooth helical tubes of different flow directions utilizing smart computational techniques

Dimensionless group

Minimum value

Maximum value

\({\text{Re}}_{tp}\)

9519.67

455,235.4

\({\text{Pr}}_{tp}\)

1.217

3.64

\(P_{red}\)

0.06

0.49

\(CR\)

0.005

0.092

\({\text{We}}_{v}\)

158.18

19,174.14

\(Y\)

1

3

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