**9.1 Final result**

At DPHE, the set results were confirmed by experimental work on mathematical models **Tables 3** and **4**. **Figures 5** and **6** shows that, in comparison with the test values for the full total result, a larger 4°C rating was obtained for the mathematical model due to a few manual errors.

Mathematical model analysis and test function are shown in **Figures 7** and **8**. The test consists of a smooth tube with a torsioned tube Y1 = 4.3 and Y2 = 7.7 without installation and installation. Recovery of heat from hot and cold liquids increases as **Table 5** temperature differences increase. Extreme heat transfer from *Assessment of Augmentation Techniques to Intensify Heat Transmission Power DOI: http://dx.doi.org/10.5772/intechopen.101670*


**Table 3.**

*Theoretical values for temperatures and heat transfer coefficient.*


**Table 4.**

*Experimental values of heat transfer coefficient for smooth and twist tape.*

**Figure 5.** *Thermal results in plane tube simulation.*

hot and cold liquids is used in the form of heat transfer. It was noted that the 6°C of the twist ration Y1 = 4.3 and the 4°C of the twist ratio Y2 = 7.7 as the comparable smooth tube was increased using twist-tape.

**Figure 9** translates that, the conflict decreased as the snumber of Reynolds increased. Therefore, when twisted tapes with different twist ratios are shown in 4.3 and 7.7 a device that is more important than a smooth tab is used. The heat transfer coefficient with a twist ratio of 4.3 rather than a 7.7 twist ratio. Therefore, the ratio of the contraction of the pulsating tap and the sugar is very smooth to 4.3 twist ratio and then 7.7.

**Figure 6.** *Thermal results in tube with tape simulation.*

**Figure 7.** *Comparison between mathematical model and experimental work.*

**Figure 8.**

*Comparison between mathematical model and experimental work for smooth tube, twisted tape having twist ration (Y1 = 4.3 & Y2 = 7.7).*


*Assessment of Augmentation Techniques to Intensify Heat Transmission Power DOI: http://dx.doi.org/10.5772/intechopen.101670*

**Table 5.**

*Comparison of temperature difference.*

**Figure 9.** *Friction factor ratios vs. Nre for theoretical and experimental values.*
