• Nitesh Kumar Singh
• R.C.Gupta

In many industrial applications heat has to be transferred from one flowing fluid to another through a solid barrier separating these fluids. The equipment used for this purpose are called Heat Exchangers. The application of convection studies is mainly in the field of design of heat exchangers At present study circular cross-sectional double tube with different number of turns and outside diameter keeping constant helix angle was employed with comparison of circular cross section straight tube in a double pipe heat exchanger. The number of turns varies from 1 to 6, keeping the helix angle and total length of tube constant to examine the effect in heat transfer performance. The aim of this study is “To evaluate the heat transfer rate with structural modification of double-helical coiled tube heat exchanger by changing the helical geometry i.e. number of turns and outside helical dia using ionic liquid different weight percentage boron nanofluids based (io-nanofluids) considering the numerical simulation of ε-NTU analysis for both fluids passages.”

Heat exchanger, nano fluids, NTU analysis, heat transfer rate etc.

"“CFD analysis on heat transfer characteristics in ionic liquid-based nano-fluids flowing in a double-helical coiled tube heat exchanger”", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.8, Issue 11, page no.c694-c702, November-2021, Available :http://www.jetir.org/papers/JETIR2111292.pdf

"“CFD analysis on heat transfer characteristics in ionic liquid-based nano-fluids flowing in a double-helical coiled tube heat exchanger”", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.8, Issue 11, page no. ppc694-c702, November-2021, Available at : http://www.jetir.org/papers/JETIR2111292.pdf