Impact of new multiple twisted tapes on treatment of solar heat exchanger

This study investigates the nanofluid turbulent flow due to the presence of helical tapes in solar flat plate collectors. The influence of various twisted tap (TT) and inlet velocity on the thermal efficiency and Darcy factor value of the nanofluid flow is evaluated. Furthermore, the effect of nanoparticle shape on thermal efficiency of solar heat exchanger is studied. The results imply that more mixing occurs in larger values of TTn and Re. Although augmenting TTn results in higher pressure loss, thermal efficiency improves with the rise of TTn. According to achieved outcomes, using twisted tapes notably improves the Nu. As the shape of the nanoparticles changes from spherical to blade form, the heat transfer enhances about 12.12% in solar heat exchanger. Performance (eta) augments with rise of shape factor and with changing from sphere to blade shape, eta augments about 17.26%. Increase of power of pump makes eta to decrease about 9.06%. Utilizing more number of tapes causes eta to decline about 2.27%. Increasing inlet velocity and number of tapes leads to augment of Nu about 264.12% and 3.19%.

Automated summary

This study investigates the influence of helical tapes on nanofluid turbulent flow in solar flat plate collectors and evaluates the impact of twisted tap (TT) and inlet velocity on the thermal efficiency and Darcy factor of the nanofluid flow. The results suggest that using twisted tapes significantly improves heat transfer efficiency.