Development of new finned tube heat exchanger : Innovative tube-bank design and thermohydraulic performance
(2020) In Heat Transfer Engineering 41(14). p.1209-1231- Abstract
Three-dimensional numerical simulations are successfully carried out on thermo-hydraulic characteristics of a new plain fin-and-elliptical tube (PFET) heat exchanger with innovative types of tube-banks, namely—a slotted elliptical tube-bank (SETB) (Case B and Case C) and a slotted annular elliptical tube-bank (SAETB) (Case D and Case E). The new PFET heat exchanger contains elliptical cross-sectioned tubes that create narrow slots oriented in the streamwise or/and spanwise direction. The investigation on the effects of different shape tube-banks on the air-side heat transfer and fluid flow characteristics in the new PFET heat exchanger was performed using the ANSYS CFX® package. The objectives of this investigation are to determine an... (More)
Three-dimensional numerical simulations are successfully carried out on thermo-hydraulic characteristics of a new plain fin-and-elliptical tube (PFET) heat exchanger with innovative types of tube-banks, namely—a slotted elliptical tube-bank (SETB) (Case B and Case C) and a slotted annular elliptical tube-bank (SAETB) (Case D and Case E). The new PFET heat exchanger contains elliptical cross-sectioned tubes that create narrow slots oriented in the streamwise or/and spanwise direction. The investigation on the effects of different shape tube-banks on the air-side heat transfer and fluid flow characteristics in the new PFET heat exchanger was performed using the ANSYS CFX® package. The objectives of this investigation are to determine an optimal staggered tube-bank configuration for augmenting heat transfer rates with minimal pressure drop penalties, and compare the results against traditional non-slotted elliptical tube-bank heat exchangers. The averaged heat transfer rate of the SETB/SAETB heat exchanger is more than 15% greater than that of the traditional non-slotted elliptical tube heat exchanger. The overall performance evaluation criteria, estimated in terms of the area goodness factor and volume goodness factor for enhanced cases (SETBs/SAETBs), were higher than there found by a non-slotted elliptical tube-bank case. Overall, the computational results showed that the Case D causes an appreciable increase of the heat transfer rate without a pressure drop penalty.
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- author
- Lotfi, Babak and Sundén, Bengt LU
- organization
- publishing date
- 2020
- type
- Contribution to journal
- publication status
- published
- subject
- in
- Heat Transfer Engineering
- volume
- 41
- issue
- 14
- pages
- 23 pages
- publisher
- Taylor & Francis
- external identifiers
-
- scopus:85070810014
- ISSN
- 0145-7632
- DOI
- 10.1080/01457632.2019.1637112
- language
- English
- LU publication?
- yes
- id
- b8258209-fb22-4e72-8063-d63abb77b955
- date added to LUP
- 2019-09-04 09:59:38
- date last changed
- 2022-04-26 03:52:36
@article{b8258209-fb22-4e72-8063-d63abb77b955,
abstract = {{<p>Three-dimensional numerical simulations are successfully carried out on thermo-hydraulic characteristics of a new plain fin-and-elliptical tube (PFET) heat exchanger with innovative types of tube-banks, namely—a slotted elliptical tube-bank (SETB) (Case B and Case C) and a slotted annular elliptical tube-bank (SAETB) (Case D and Case E). The new PFET heat exchanger contains elliptical cross-sectioned tubes that create narrow slots oriented in the streamwise or/and spanwise direction. The investigation on the effects of different shape tube-banks on the air-side heat transfer and fluid flow characteristics in the new PFET heat exchanger was performed using the ANSYS CFX® package. The objectives of this investigation are to determine an optimal staggered tube-bank configuration for augmenting heat transfer rates with minimal pressure drop penalties, and compare the results against traditional non-slotted elliptical tube-bank heat exchangers. The averaged heat transfer rate of the SETB/SAETB heat exchanger is more than 15% greater than that of the traditional non-slotted elliptical tube heat exchanger. The overall performance evaluation criteria, estimated in terms of the area goodness factor and volume goodness factor for enhanced cases (SETBs/SAETBs), were higher than there found by a non-slotted elliptical tube-bank case. Overall, the computational results showed that the Case D causes an appreciable increase of the heat transfer rate without a pressure drop penalty.</p>}},
author = {{Lotfi, Babak and Sundén, Bengt}},
issn = {{0145-7632}},
language = {{eng}},
number = {{14}},
pages = {{1209--1231}},
publisher = {{Taylor & Francis}},
series = {{Heat Transfer Engineering}},
title = {{Development of new finned tube heat exchanger : Innovative tube-bank design and thermohydraulic performance}},
url = {{http://dx.doi.org/10.1080/01457632.2019.1637112}},
doi = {{10.1080/01457632.2019.1637112}},
volume = {{41}},
year = {{2020}},
}