The values of overall heat transfer coefficient, U , obtained from the source [18] are compared with those found from the validation experiment, which are within the proximity of 93% of TMMHP. Similarly, the thermal resistances, R , are also compared and found to be within 95% of the known values.
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Figure 23 Validation experiment with the known results [18]
The variation of overall heat transfer coefficient, U , at different inclinations are shown in the following figures, Fig.3.10 (a-d). In the legendry of the plots, H represents Hossain et al [18] and I for Iqbal (author).