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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