Performance Study of a Cylindrical Parabolic Concentrating Solar Water Heater with Nail Type Twisted Tape inserts in the Copper Absorber Tube

Bhakta, Amit Kumar; Panday, Nitesh K.; Singh, Shailenrda N.

doi:10.20944/preprints201712.0030.v1

Cited by 2 publications

(1 citation statement)

References 19 publications

(22 reference statements)

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“…The results of using twisted tap varying under ratio Y 5 (2, 3, 5) showed enhancement in thermal performance reach 27% at a twisted ratio equal to 2 compared with other ratios and base fluids. Bhakta et al [31] examined the effect of using nails twisted tapes insert in the receiver tube of PTC. This configuration was studied under different ratios compared with the previous research.…”

Section: Inserts Model and Surface Modification Experimental Workmentioning

confidence: 99%

Recent experimental enhancement techniques applied in the receiver part of the parabolic trough collector – A review

Al–Oran

Lezsovits

2020

IRASE

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Recently, the thermal performance of the parabolic trough collector (PTC), augmented to be more applicable and efficient, received intensive research. These studies aimed to improve heat transfer in the receiver part, in order to decrease the heat loss, and enhance the heat transfer to the thermal fluid. Many previous review papers focused on the numerical sides rather than the experimental side. Several research papers recommended doing more research in the experimental field; in order to decrease the gap between the numerical and experimental results, as well as increase the confidence level of what has been done in the theoretical field researches. Regarding the recommendations of the recent papers to decrease the gap between numerical and experimental aspects, this review paper focused on the recent experimental research related to thermal enhancement performance in the receiver part of the parabolic solar collector. In this research, different categories of the enhancement methods are discussed in detail through this review, namely nanofluids, surface modifications, and inserts models or the two categories combined together. We discussed these categories for different parabolic troughs considering only the recent experimental research between the period from 2014 up to 2019. Some parameters were discussed, such as the main dimensions of the examined receiver and parabolic collector. Moreover, types of nanoparticle specifications and preparation methods with different base fluids were highlighted. In addition, we discussed different aspects of using inserts models and inlet and outlet surface modification methods. Finally, the main thermal efficiency and thermal performance enhancement results for each work were presented.

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Section: Inserts Model and Surface Modification Experimental Workmentioning

confidence: 99%