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Performance of plate heat exchangers for evaporation of ammonia

Sterner, Dirk LU and Sundén, Bengt LU (2006) In Heat Transfer Engineering 27(5). p.45-55
Abstract
Measurements on a semi-welded plate heat exchanger (PHE) and on various versions of the nickel-brazed PHE were performed in a large experimental refrigeration rig. Experiments were carried out with the refrigerant ammonia, which was completely evaporated in vertical upward flow in PHEs connected in a U-type manner. A multiple linear regression analysis produced three Nusselt number correlations for the different PHEs that can predict the measured Nusselt number decently. The values for the C-coefficient ( in the correlation of the two-phase multiplier) for the higher Reynolds number are somewhat higher than those reported in other investigations. An inlet flow distributor in the semi-welded heat exchanger made it possible to achieve a... (More)
Measurements on a semi-welded plate heat exchanger (PHE) and on various versions of the nickel-brazed PHE were performed in a large experimental refrigeration rig. Experiments were carried out with the refrigerant ammonia, which was completely evaporated in vertical upward flow in PHEs connected in a U-type manner. A multiple linear regression analysis produced three Nusselt number correlations for the different PHEs that can predict the measured Nusselt number decently. The values for the C-coefficient ( in the correlation of the two-phase multiplier) for the higher Reynolds number are somewhat higher than those reported in other investigations. An inlet flow distributor in the semi-welded heat exchanger made it possible to achieve a higher performance at low Delta T-out. The nickel-brazed heat exchanger with an integrated inlet flow distributor was found to have a better performance compared to a nickel-brazed heat exchanger without the flow distributor. (Less)
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author
and
organization
publishing date
type
Contribution to journal
publication status
published
subject
in
Heat Transfer Engineering
volume
27
issue
5
pages
45 - 55
publisher
Taylor & Francis
external identifiers
  • wos:000236239600005
  • scopus:33645219325
ISSN
1521-0537
DOI
10.1080/01457630600559611
language
English
LU publication?
yes
id
ede40763-fde5-4fd4-93a8-29d12b2564e2 (old id 415193)
date added to LUP
2016-04-01 12:08:48
date last changed
2021-08-04 05:07:19
@article{ede40763-fde5-4fd4-93a8-29d12b2564e2,
  abstract     = {Measurements on a semi-welded plate heat exchanger (PHE) and on various versions of the nickel-brazed PHE were performed in a large experimental refrigeration rig. Experiments were carried out with the refrigerant ammonia, which was completely evaporated in vertical upward flow in PHEs connected in a U-type manner. A multiple linear regression analysis produced three Nusselt number correlations for the different PHEs that can predict the measured Nusselt number decently. The values for the C-coefficient ( in the correlation of the two-phase multiplier) for the higher Reynolds number are somewhat higher than those reported in other investigations. An inlet flow distributor in the semi-welded heat exchanger made it possible to achieve a higher performance at low Delta T-out. The nickel-brazed heat exchanger with an integrated inlet flow distributor was found to have a better performance compared to a nickel-brazed heat exchanger without the flow distributor.},
  author       = {Sterner, Dirk and Sundén, Bengt},
  issn         = {1521-0537},
  language     = {eng},
  number       = {5},
  pages        = {45--55},
  publisher    = {Taylor & Francis},
  series       = {Heat Transfer Engineering},
  title        = {Performance of plate heat exchangers for evaporation of ammonia},
  url          = {http://dx.doi.org/10.1080/01457630600559611},
  doi          = {10.1080/01457630600559611},
  volume       = {27},
  year         = {2006},
}