An experimental investigation for helical triple concentric tube heat exchanger has been carriedout with different flow arrangements i.e. N-H-C (normal fluid inside - hot at middle - cold in outerannulus) and C-H-N (cold fluid in inner pipe - hot in middle - normal fluid in outer annulus) with paralleland counter flow types. The temperature distribution of fluids w.r.t. length of the heat exchanger hasbeen observed. Effectiveness is calculated for parallel and counter flow in NHC and CHN arrangements.The triple concentric helical tube heat exchanger proved to be effective and of compact design for heatexchange between the fluids. The N-H-C counter flow arrangement with high volume flow rate of fluidproved to be effective than other arrangements.
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