Thermal performance of a prototype plate heat exchanger with minichannels under boiling conditions

Jan Wajs; Dariusz Mikielewicz; Elżbieta Fornalik-Wajs

doi:10.1088/1742-6596/745/3/032063

Thermal performance of a prototype plate heat exchanger with minichannels under boiling conditions

Abstract

To solve the problem and to meet the requirements of customers in the field of high heat fluxes transfer in compact units, a new design of plate heat exchanger with minichannels (minichannels PHE) was proposed. The aim was to construct a compact heat exchanger of high effectiveness for the purpose of household cogeneration ORC system. In this paper the experimental analysis of an assembled prototype of such compact heat exchanger was described. The attention was paid to its thermal performance and the heat transfer coefficients under the boiling conditions. Water and ethanol were chosen as working fluids. The maximal value of transferred heat flux was about 84 kW/m2, while of the overall heat transfer coefficient was about 4000 W/(m2K). Estimated values of heat transfer coefficient on the ethanol (boiling) side reached the level of 7500 W/(m2K). The results are promising in the light of future applications, for example in cogeneration ORC systems, however further systematic investigations are necessary.

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Authors (3)

Jan Wajs dr hab. inż.
Dariusz Mikielewicz prof. dr hab. inż.
Elżbieta Fornalik-Wajs
- AGH Wydział Energetyki i Paliw

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DOI:: Digital Object Identifier (open in new tab) 10.1088/1742-6596/745/3/032063
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Category:: Conference activity
Type:: materiały konferencyjne indeksowane w Web of Science
Published in:: Journal of Physics : Conference Series no. 745, pages 1 - 10,
ISSN: 1742-6588
Title of issue:: 7th European Thermal-Sciences Conference (Eurotherm) strony 1 - 10
Language:: English
Publication year:: 2016
Bibliographic description:: Wajs J., Mikielewicz D., Fornalik-Wajs E..: Thermal performance of a prototype plate heat exchanger with minichannels under boiling conditions, W: 7th European Thermal-Sciences Conference (Eurotherm), 2016, ,.
DOI:: Digital Object Identifier (open in new tab) 10.1088/1742-6596/745/3/032063
Verified by:: Gdańsk University of Technology