Transient temperature field in a parallel-flow three-fluid heat exchanger with the thermal capacitance of the walls and the longitudinal walls conduction

Abstract

HAL is a multi-disciplinary open access archive for the deposit and dissemination of scientific research documents, whether they are published or not. The documents may come from teaching and research institutions in France or abroad, or from public or private research centers. L'archive ouverte pluridisciplinaire HAL, est destinée au dépôt et à la diffusion de documents scientifiques de niveau recherche, publiés ou non, émanant des établissements d'enseignement et de recherche français ou étrangers, des laboratoires publics ou privés.Transient temperature field in a parallel-flow three-fluid heat exchanger with the thermal capacitance of the walls and the longitudinal walls conductionTo cite this version: ACCEPTED MANUSCRIPT

Heat Transfer Analysis for a Concentric Tube Heat Exchanger Including the Wall Axial Conduction

“…It is stated in the study that axial heat conduction along the dividing walls often plays some role and cannot be neglected. Malinowski and Bielski [15] studied the problem of transient and steady-state behavior of a parallel-flow three-fluids heat exchanger with regard to the transverse and axial wall conduction. They showed that good thermal conductivity of the wall increases the influence of axial heat conduction and at the same time decreases the effect of resistance in transverse direction.…”

New integral-mean temperature difference model for thermal design and simulation of parallel three-fluid heat exchanger

“…Recently, they further set up the numerical model [23] that takes into account the thermal capacitance of the walls, the longitudinal heat conduction through the walls, and the conductive resistance across the walls to study the transient temperature response of the parallel three-fluid heat exchanger.…”

Numerical investigation on fin-tube three-fluid heat exchanger for hybrid source HVAC&R systems

“…As we know, three-fluid heat exchanger is a type of heat exchangers which can transfer heat synchronously between three fluids. It has been used in cryogenics, aerospace and chemical industries [16,17]. The application of three-fluid heat exchangers in these fields makes the equipments more compact in construction, higher in thermal efficiency [18] and lower in reliability risk [19].…”

“…Analytical solution was obtained for special cases [21]. Finite element models were developed for some types of three-fluid heat exchangers, including co-current parallel flow [22,23], countercurrent parallel flow [17,[22][23][24][25] and cross parallel flow [26][27][28]. Integral-mean temperature difference model has also been developed to simplify the simulation of three-fluid heat exchangers [18].…”