Experimental investigation on straight and u-bend double tube heat exchanger with active and passive enhancement methods
Abstract
Authors in this work want to demonstrate the possibility to increase the heat transfer efficiency by using simple wire coil inserts to create turbulent flow in the boundary layer as well as air blowing into the annulus of the pipe. In the study, Wilson plot approach was applied in order to estimate heat transfer coefficients for all heat exchanger (HX) configurations. The study focuses on experimental values of heat transfer coefficient (HTC) and pressure drops. The primary objectives of the work are to: I. Provide an experimental comprehensive database for HTC and pressure drops; II. Analysis effect of different flow conditions e.g.. water mass flow rate, the void fraction on heat transfer and hydraulic performance of tested elements. III. Compare influences of both passive and active methods at the efficiency of simple heat exchangers constructions; IV. Validation experimental results with selected experimental models from the open literature.
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Details
- Category:
- Conference activity
- Type:
- materiały konferencyjne indeksowane w Web of Science
- Published in:
-
MATEC Web of Conferences
no. 240,
pages 1 - 6,
ISSN: 2261-236X - Title of issue:
- XI International Conference on Computational Heat, Mass and Momentum Transfer (ICCHMT 2018) strony 1 - 6
- Language:
- English
- Publication year:
- 2018
- Bibliographic description:
- Andrzejczyk R., Muszyński T., Kozak P..: Experimental investigation on straight and u-bend double tube heat exchanger with active and passive enhancement methods, W: XI International Conference on Computational Heat, Mass and Momentum Transfer (ICCHMT 2018), 2018, ,.
- DOI:
- Digital Object Identifier (open in new tab) 10.1051/matecconf/201824002001
- Verified by:
- Gdańsk University of Technology
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