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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
2022-04-21 03:09:32
@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}},
}