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Table 8 Contribution of each parameter for maximum heat transfer rate in EATHE

From: Optimization of operating parameters of earth air tunnel heat exchanger for space cooling: Taguchi method approach

Parameter

Factor

\(\overline{\text{SNR}}\)

\({\text{SS}}_{i}\)

SS

Contribution,  %

Diameter of pipe

A

57.55

67.55

126.78

53.28

Length of pipe

B

8.17

6.45

Inlet air velocity

C

11.91

9.40

Inlet air temperature

D

39.13

30.87