Topic
Concentric tube heat exchanger
About: Concentric tube heat exchanger is a research topic. Over the lifetime, 5053 publications have been published within this topic receiving 81130 citations.
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TL;DR: In this article, the conical-ring turbulators and twisted-tape swirl generators were used for heat transfer, friction factor and enhancement efficiency in a circular tube fitted with conical ring turbulators.
243 citations
TL;DR: In this paper, turbulent forced convection flow of water-Al2O3 nanofluid in a circular tube, subjected to a constant and uniform heat flux at the wall, is numerically analyzed.
240 citations
TL;DR: In this article, a set of CFD simulations for a single shell and single tube pass heat exchanger with a variable number of baffles and turbulent flow were performed, and the best turbulence model among the ones considered was determined by comparing the CFD results of heat transfer coefficient, outlet temperature and pressure drop with the Bell-Delaware method results.
237 citations
TL;DR: In this article, the authors investigated the heat transfer and pressure drop characteristics of the Printed Circuit Heat Exchanger (PCHE) in an experimental supercritical CO2 loop.
Abstract: Heat transfer and pressure drop characteristics of the Printed Circuit Heat Exchanger (PCHE) were investigated in an experimental supercritical CO2 loop. The inlet temperature and pressure were varied from 280 to 300 °C/2.2 to 3.2 MPa in the hot side and from 90 to 108 °C/6.5 to 10.5 MPa in the cold side while the mass flow rate was varied from 40 to 80 kg h−1. The overall heat transfer coefficient range is 300–650 W m−2 K−1 while the compactness with respect to the heat exchanger core is approximately 1050 m2 m−3. The empirical correlations to predict the local heat transfer coefficient and pressure drop factor as a function of the Reynolds number have been proposed for the tested PCHE.
236 citations
TL;DR: In this article, a least squares-matching technique is presented to analyze fully developed laminar fluid flow and heat transfer in ducts of arbitrary cross-section, where forced convection heat transfer is considered under constant axial heat-transfer rate with arbitrary peripheral thermal boundary conditions.
233 citations