This article is devoted to the dynamic study of a brazed plate heat exchanger (BPHE). First, is proposed an introduction to the industrial context of the current FUI THERMOFLUIDE project. A succinct presentation of the heat exchanger technology is proposed. Afterward, is given a state of the art about BPHEs modeling, heat transfer and pressure drop correlations. Then a detailed mathematical description of an original dynamic model is presented. The last section deals with a description of the experimental test rig and performed validation tests.