Next Article in Journal
Rapid and Green Preparation of Multi-Branched Gold Nanoparticles Using Surfactant-Free, Combined Ultrasound-Assisted Method
Next Article in Special Issue
The Impact of Moisture and Number of Contact Points on the Process of Friction in Plant Granular Materials
Previous Article in Journal
Influence of Surface Waviness of Journal and Bearing Bush on the Static Characteristics of Hydrodynamic Bearing
Previous Article in Special Issue
A Model of Transport of Particulate Biomass in a Stream of Fluid
Article

Optimisation of the Geometric Parameters of Longitudinally Finned Air Cooler Tubes Operating in Mixed Convection Conditions

1
Technical Department, JUKA, 32-005 Niepołomice, Poland
2
Institute of Thermal and Process Engineering, Cracow University of Technology, 31-155 Cracow, Poland
*
Author to whom correspondence should be addressed.
Processes 2021, 9(1), 111; https://doi.org/10.3390/pr9010111
Received: 10 December 2020 / Revised: 2 January 2021 / Accepted: 4 January 2021 / Published: 7 January 2021
(This article belongs to the Special Issue Technical Aspects of Renewable Energy Sources (RES))
The results of optimisation calculations presented in the article are related to longitudinally finned tubes of a heat pump evaporator operating under natural wind-induced flow of outdoor air conditions. The finned surface is characterised by an unusual, wavy fin shape. The article presents the methodology applied to seeking optimal geometric parameters of the finned tube in which thermal calculations were performed by modelling a mixed convection process on the finned surface using the finite volume method. In the case of maximising the heat flow with the minimum mass of the fins, the optimal solution was dominated by the minimum mass of the fins and thus geometric parameters correspond to the number of fins n = 6, fin height h = 0.065 and fin thickness s = 0.0015 m. Optimisation calculations made for maximum efficiency of the exchanger at constant mass indicated that the tube with ten fins (n = 10) with a height of h = 0.11 m and a thickness of s = 0.0018 m allowed maximum heat flow at the assumed mass of the fins in the exchanger tube model. The article proposes a simplified method of determining the optimal geometric parameters of the profile for any mass and maximum thermal efficiency. View Full-Text
Keywords: heat pump evaporator; mixed convection; longitudinal finned tubes; optimisation of geometric parameters heat pump evaporator; mixed convection; longitudinal finned tubes; optimisation of geometric parameters
Show Figures

Graphical abstract

MDPI and ACS Style

Kopeć, P.; Niezgoda-Żelasko, B. Optimisation of the Geometric Parameters of Longitudinally Finned Air Cooler Tubes Operating in Mixed Convection Conditions. Processes 2021, 9, 111. https://doi.org/10.3390/pr9010111

AMA Style

Kopeć P, Niezgoda-Żelasko B. Optimisation of the Geometric Parameters of Longitudinally Finned Air Cooler Tubes Operating in Mixed Convection Conditions. Processes. 2021; 9(1):111. https://doi.org/10.3390/pr9010111

Chicago/Turabian Style

Kopeć, Piotr, and Beata Niezgoda-Żelasko. 2021. "Optimisation of the Geometric Parameters of Longitudinally Finned Air Cooler Tubes Operating in Mixed Convection Conditions" Processes 9, no. 1: 111. https://doi.org/10.3390/pr9010111

Find Other Styles
Note that from the first issue of 2016, MDPI journals use article numbers instead of page numbers. See further details here.

Article Access Map by Country/Region

1
Back to TopTop