Abo Bibliothek: Guest

ISSN Online: 2377-424X

ISBN Print: 978-1-56700-474-8

ISBN Online: 978-1-56700-473-1

International Heat Transfer Conference 16
August, 10-15, 2018, Beijing, China

APPROXIMATION ASSISTED OPTIMIZATION OF PILLOW PLATE HEAT EXCHANGERS

Get access (open in a dialog) DOI: 10.1615/IHTC16.hte.022642
pages 5005-5010

Abstrakt

Plate heat exchangers (PHXs) are becoming more favorable to the HVAC&R industry due to their compactness, small approach temperature, and desirable thermal-hydraulic characteristics. Pillow plate heat exchangers (PPHXs) are a type of PHXs with complex wavy structure creating a flow channel with a fully developed turbulent flow between the plates. This creates an excellent heat transfer flow path and a potential to outperform other types of PHXs. Additionally, the manufacturing process of PPHX is simple and more economic compared to conventional PHXs. The thermal-hydraulic performance of the PPHX is altered by the longitudinal and transverse pitches between the spot welds, the shape and size of the weld itself, and the height of the pillow. In this study, new designs for PPHXs are investigated in order to maximize their thermal-hydraulic performance. The objective is to maximize the heat transfer coefficient and minimize the pressure drop per unit length. The potential enhancement can be up to double the heat transfer coefficient at moderate Reynolds number values and up to 99% reduction in pressure drop as compared to a selected PPHX baseline design.