Publication detail

Correlation of Heat Transfer Coefficient at Sprinkled Tube Bundle

KRACÍK, P. ŠNAJDÁREK, L. LISÝ, M. BALÁŠ, M. POSPÍŠIL, J.

Original Title

Correlation of Heat Transfer Coefficient at Sprinkled Tube Bundle

English Title

Correlation of Heat Transfer Coefficient at Sprinkled Tube Bundle

Type

journal article in Web of Science

Language

en

Original Abstract

The paper presents a research on the heat-transfer coefficient at the surface of a sprinkled tube bundle, using a boiling simulation. A tube bundle consists of thirteen copper tubes divided into two rows and it is located in a low-pressure chamber where vacuum is generated by an exhauster via an ejector. The liquid tested was water at the absolute pressure in the chamber of 96.8–12.3 kPa and at a thermal gradient of 55–30 °C between the cooled liquid flowing upwards inside the exchanger and the heated falling film liquid. The flow of the falling film liquid ranged from 0–17 L/min. Two types of tubes were tested, a smooth one and a sandblasted one. The correlation of the average heat-transfer coefficient at the surfaces of both tube types was identified.

English abstract

The paper presents a research on the heat-transfer coefficient at the surface of a sprinkled tube bundle, using a boiling simulation. A tube bundle consists of thirteen copper tubes divided into two rows and it is located in a low-pressure chamber where vacuum is generated by an exhauster via an ejector. The liquid tested was water at the absolute pressure in the chamber of 96.8–12.3 kPa and at a thermal gradient of 55–30 °C between the cooled liquid flowing upwards inside the exchanger and the heated falling film liquid. The flow of the falling film liquid ranged from 0–17 L/min. Two types of tubes were tested, a smooth one and a sandblasted one. The correlation of the average heat-transfer coefficient at the surfaces of both tube types was identified.

Keywords

sprinkled, water, under pressure, heat transfer

Released

12.08.2016

Publisher

Inštitut za kovinske materiale in technologije Ljubljana

Location

Ljubljana

Pages from

479

Pages to

483

Pages count

5

Documents

BibTex


@article{BUT119542,
  author="Petr {Kracík} and Ladislav {Šnajdárek} and Martin {Lisý} and Marek {Baláš} and Jiří {Pospíšil}",
  title="Correlation of Heat Transfer Coefficient at Sprinkled Tube Bundle",
  annote="The paper presents a research on the heat-transfer coefficient at the surface of a sprinkled tube bundle, using a boiling simulation. A tube bundle consists of thirteen copper tubes divided into two rows and it is located in a low-pressure chamber where vacuum is generated by an exhauster via an ejector. The liquid tested was water at the absolute pressure in the chamber of 96.8–12.3 kPa and at a thermal gradient of 55–30 °C between the cooled liquid flowing upwards inside the exchanger and the heated falling film liquid. The flow of the falling film liquid ranged from 0–17 L/min. Two types of tubes were tested, a smooth one and a sandblasted one. The correlation of the average heat-transfer coefficient at the surfaces of both tube types was identified.",
  address="Inštitut za kovinske materiale in technologije Ljubljana",
  chapter="119542",
  doi="10.17222/mit.2014.115",
  howpublished="print",
  institution="Inštitut za kovinske materiale in technologije Ljubljana",
  number="4",
  volume="50",
  year="2016",
  month="august",
  pages="479--483",
  publisher="Inštitut za kovinske materiale in technologije Ljubljana",
  type="journal article in Web of Science"
}