Share
IIR document
Modeling and experimental analysis of direct contact heat exchangers for R718 refrigeration system.
Number: 0444
Author(s) : FAYAD R., ORTEGO SAMPEDRO E., ZOUGHAIB A., KANG K., CHAUVIN A.
Summary
Natural refrigerants are taking an increasing place in the refrigeration market today. Water is one of the most abundant and safest working fluids. However, the literature on water based refrigeration systems is very scarce, in particular regarding experimental works. Besides, the design of heat exchangers for water-based systems is very specific. The design quality has a huge consequence on the performance and capacity of such systems. Thus, the development and validation of mathematical models used for the sizing and the design of such heat exchangers are very important. This paper presents mathematical models of direct contact low-pressure heat exchangers for steam evaporation and condensation. These models are part of a complete refrigeration system model developed on Dymola. The modelling results are compared to experiments done on a 10kW chiller. The Dymola model combined to a one-dimensional model of the heat exchanger predicts well the operating pressures and the heat transfer performances. The experimental results were also used to build empirical models of the global heat transfer coefficient. The heat transfer appears to be mainly affected by the steam to liquid flow rates fraction, the liquid flow rate and the condensing power.
Available documents
Format PDF
Pages: 12 p.
Available
Public price
20 €
Member price*
Free
* Best rate depending on membership category (see the detailed benefits of individual and corporate memberships).
Details
- Original title: Modeling and experimental analysis of direct contact heat exchangers for R718 refrigeration system.
- Record ID : 30031612
- Languages: English
- Subject: Technology
- Source: Proceedings of the 26th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
- Publication date: 2023/08/21
- DOI: http://dx.doi.org/10.18462/iir.icr.2023.0444
Links
See other articles from the proceedings (492)
See the conference proceedings
Indexing
-
Preliminary study of the splashing effect due t...
- Author(s) : GIRAUD F., MANTAROPOULOS P., TREMEAC B., TOBALY P.
- Date : 2023/08/21
- Languages : English
- Source: Proceedings of the 26th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
- Formats : PDF
View record
-
Water vaporization inside a smooth plate-type h...
- Author(s) : GIRAUD F., FLURO L., TREMEAC B.
- Date : 2019/08/24
- Languages : English
- Source: Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
- Formats : PDF
View record
-
Preliminary study of saturated water (R-718) fi...
- Author(s) : GIRAUD F., COLLIGNON R., MAREK J., STUTZ B.
- Date : 2023/08/21
- Languages : English
- Source: Proceedings of the 26th IIR International Congress of Refrigeration: Paris , France, August 21-25, 2023.
- Formats : PDF
View record
-
Theoretical and experimental investigation on a...
- Author(s) : WU D., HU B., WANG R. Z.
- Date : 2019/08/24
- Languages : English
- Source: Proceedings of the 25th IIR International Congress of Refrigeration: Montréal , Canada, August 24-30, 2019.
- Formats : PDF
View record
-
Modelling of a plate-type water heat exchanger.
- Author(s) : APREA C., RENNO C.
- Date : 2008/10/15
- Languages : English
- Source: Projektowanie i eksploatacja przyjaznych srodowisku systemów chlodniczych i klimatyzacyjnych. Miedzynarodowa konferencja. XL Dni chlodnictwa.
- Formats : PDF
View record