• Ashutosh Awasthi
• Deenoo pawar

In this paper, a numerical investigation and simulation on heat transfer enhancement and flow characteristics in a new type plate heat exchanger using helical flow duct in a series arrangement in counter flow of water as the test fluid is presented. Computational fluid dynamics package (ANSYS FLUENT 16) is used. For the numerical simulation, the Reynolds number for each case is varied from 20000 to 60000 in steps of 20000 contributing to three cases for each geometric parameter i.e centre distance variation and hence a total of 9 cases are studied and the results are compared. The effects of centre distance on the different parameters such as pressure drop(Δp) Friction factor (f),and heat exchanger effectiveness. It is found that the increase in centre distance between the helical pipe decreases heat transfer rate and increase the pressure drop. The heat exchanger effectiveness is found maximum (0.98) at distance of 50mm having Reynolds number 20000 among the different cases.

Helical Coil Heat Exchangers(HCHE), Computational fluid dynamics, Reynolds number, effectiveness, pressure drop, Friction factor.

"A numerical investigation on heat transfer enhancement and the flow characteristics in a new type plate heat exchanger using helical flow duct", International Journal of Emerging Technologies and Innovative Research (www.jetir.org), ISSN:2349-5162, Vol.7, Issue 10, page no.1810-1822, October-2020, Available :http://www.jetir.org/papers/JETIR2010234.pdf

"A numerical investigation on heat transfer enhancement and the flow characteristics in a new type plate heat exchanger using helical flow duct", International Journal of Emerging Technologies and Innovative Research (www.jetir.org | UGC and issn Approved), ISSN:2349-5162, Vol.7, Issue 10, page no. pp1810-1822, October-2020, Available at : http://www.jetir.org/papers/JETIR2010234.pdf