{"id":27592,"date":"2026-04-23T09:30:52","date_gmt":"2026-04-23T07:30:52","guid":{"rendered":"https:\/\/greth.fr\/?p=27592"},"modified":"2026-04-23T09:49:35","modified_gmt":"2026-04-23T07:49:35","slug":"rapport-technique-greth-echtherm-vs-experimentation-evaporateur-a-plaques-brasees","status":"publish","type":"post","link":"https:\/\/greth.fr\/en\/rapport-technique-greth-echtherm-vs-experimentation-evaporateur-a-plaques-brasees\/","title":{"rendered":"Technical Report : EchTherm VS Experimental Results - Brazed plate heat exchanger in evaporation"},"content":{"rendered":"<p style=\"text-align: center;\"><a href=\"\/en\/echtherm-vs-experimentation-etude-comparative-des-resultats-de-calculs-de-performance-dun-echangeur-evaporateur-a-plaques-brasees\/\"><strong><span style=\"font-size: 16px; font-family: arial, helvetica, sans-serif;\">CLICK HERE TO VIEW THE REPORT<\/span><\/strong><\/a><\/p>\n<table style=\"width: 100%; border: none;\">\n<tbody>\n<tr>\n<td style=\"width: 50%; border: none;\">\n<p style=\"text-align: justify;\">This technical report constitutes the first part of a comparative study devoted to assessing the consistency between the simulation results produced by EchTherm software and experimental measurements obtained from a test bench on a brazed plate heat exchanger (BPHE). The case considered concerns an evaporator operating with propane (R290), integrated into a heat pump cycle using water as the secondary fluid.<\/p>\n<p style=\"text-align: justify;\">The objective of the document is to evaluate, on an experimental basis, EchTherm\u2019s ability to reproduce the actual thermohydraulic behaviour of the equipment, to identify its strengths, to highlight its limitations, and to derive potential avenues for improving the modelling approach. This work forms part of a broader study, since a second document, dedicated to condenser operation, will complete this first analysis.<\/p>\n<\/td>\n<td style=\"width: 50%; border: none;\"><a href=\"\/en\/echtherm-vs-experimentation-etude-comparative-des-resultats-de-calculs-de-performance-dun-echangeur-evaporateur-a-plaques-brasees\/\"><img loading=\"lazy\" decoding=\"async\" src=\"https:\/\/greth.fr\/wp-content\/uploads\/2026\/04\/news-sp2026-04.png\" alt=\"\" width=\"400\" height=\"544\" class=\"aligncenter size-full wp-image-27594\" srcset=\"https:\/\/greth.fr\/wp-content\/uploads\/2026\/04\/news-sp2026-04.png 400w, https:\/\/greth.fr\/wp-content\/uploads\/2026\/04\/news-sp2026-04-49x67.png 49w, https:\/\/greth.fr\/wp-content\/uploads\/2026\/04\/news-sp2026-04-221x300.png 221w, https:\/\/greth.fr\/wp-content\/uploads\/2026\/04\/news-sp2026-04-9x12.png 9w\" sizes=\"auto, (max-width: 400px) 100vw, 400px\" \/><\/a><\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"text-align: justify;\">The reader will first find a detailed presentation of the test bench and measurement chain, followed by an analysis of the experimental uncertainties, which is essential for correctly assessing the significance of the deviations observed between calculation and experiment. The protocol covers 18 representative test points, selected to span the main operating parameters. The document also explains how the process data are entered into EchTherm, as well as the work carried out to reconstruct the heat exchanger geometry. On this latter point, the use of tomography provides genuine added value: it makes it possible to define key parameters that are absent from the supplier documentation and to correct certain identified geometrical discrepancies.<\/p>\n<p style=\"text-align: justify;\">Throughout the document, the analysis is not limited to a direct numerical comparison. An initial comparison with the supplier data is carried out before moving on to the core of the report: an in-depth study of the deviations observed across all test points, using statistical indicators, comparative graphs, and a physical interpretation of the phenomena involved. The report therefore goes beyond simply establishing whether the level of agreement is satisfactory or not: it specifies the practical validity range of EchTherm and shows from which level of analysis a more detailed approach, such as CFD, may become relevant. This approach provides the reader not only with results, but also with genuine interpretative keys for understanding the mechanisms responsible for the observed deviations.<\/p>\n<table style=\"border: 2px solid #bb0000; border-collapse: collapse; width: 100%;\">\n<tbody>\n<tr>\n<td style=\"width: 100%;\"><strong><span style=\"color: #bb0000;\">Target Audience<\/span><\/strong><\/p>\n<p style=\"text-align: justify;\">This document is intended both for EchTherm users and for engineers working on compact heat exchangers under two-phase flow conditions. It constitutes an experimental feedback report, a methodical validation exercise for a calculation tool, and a critical analysis useful for better understanding what can be expected from a simulation model applied to a brazed plate heat exchanger as evaporator.<\/p>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<p style=\"text-align: center;\"><a href=\"\/en\/echtherm-vs-experimentation-etude-comparative-des-resultats-de-calculs-de-performance-dun-echangeur-evaporateur-a-plaques-brasees\/\"><strong><span style=\"font-size: 16px; font-family: arial, helvetica, sans-serif;\">CLICK HERE TO VIEW THE REPORT<\/span><\/strong><\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>CLIQUEZ ICI POUR ACC\u00c9DER AU RAPPORT Ce rapport technique constitue le premier volet d\u2019une \u00e9tude comparative consacr\u00e9e \u00e0 la confrontation entre les r\u00e9sultats de simulation du logiciel EchTherm et des mesures exp\u00e9rimentales issues d\u2019un banc d\u2019essais sur \u00e9changeur \u00e0 plaques bras\u00e9es. Le cas trait\u00e9 concerne un \u00e9vaporateur fonctionnant au propane R290, int\u00e9gr\u00e9 \u00e0 un cycle &hellip;<\/p>","protected":false},"author":1,"featured_media":27590,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[18],"tags":[],"class_list":["post-27592","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-actualites-du-greth"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v23.9 (Yoast SEO v27.5) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Rapport Technique GRETh : EchTherm VS Exp\u00e9rimentation - \u00c9vaporateur \u00e0 plaques bras\u00e9es - GRETh<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/greth.fr\/en\/rapport-technique-greth-echtherm-vs-experimentation-evaporateur-a-plaques-brasees\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Rapport Technique GRETh : EchTherm VS Exp\u00e9rimentation - \u00c9vaporateur \u00e0 plaques bras\u00e9es\" \/>\n<meta property=\"og:description\" content=\"CLIQUEZ ICI POUR ACC\u00c9DER AU RAPPORT Ce rapport technique constitue le premier volet d\u2019une \u00e9tude comparative consacr\u00e9e \u00e0 la confrontation entre les r\u00e9sultats de simulation du logiciel EchTherm et des mesures exp\u00e9rimentales issues d\u2019un banc d\u2019essais sur \u00e9changeur \u00e0 plaques bras\u00e9es. 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