Publication result detail

ANALYSIS OF HELICAL HEAT EXCHANGER WATER - SLUDGE BY CFD

PISKOVSKÝ, M.; HÁJEK, J.; KILKOVSKÝ, B.; ELSAESSER, T.; STEHLÍK, P.

Original Title

ANALYSIS OF HELICAL HEAT EXCHANGER WATER - SLUDGE BY CFD

English Title

ANALYSIS OF HELICAL HEAT EXCHANGER WATER - SLUDGE BY CFD

Type

Paper in proceedings (conference paper)

Original Abstract

Thermal treatment of sludge represents a renewable energy source, which is presently widely investigated. However, thermal utilization of sludge requires some pre-treatment. The sludge has to be preheated and de-watered before combustion. The preheating has a significant effect on flocculation and consequently de-watering efficiency. In this work, we used a helical heat exchanger for the sludge preheating. Process water was used as the hot stream. Correlations necessary for design calculation of the helical heat exchanger were adopted from literature, in spite of some slight differences in the heat exchanger geometry. In order to validate and tune the design correlations, CFD simulations of the heat exchanger have been performed. Commercial code FLUENT 6.3 was used for all computations.

English abstract

Thermal treatment of sludge represents a renewable energy source, which is presently widely investigated. However, thermal utilization of sludge requires some pre-treatment. The sludge has to be preheated and de-watered before combustion. The preheating has a significant effect on flocculation and consequently de-watering efficiency. In this work, we used a helical heat exchanger for the sludge preheating. Process water was used as the hot stream. Correlations necessary for design calculation of the helical heat exchanger were adopted from literature, in spite of some slight differences in the heat exchanger geometry. In order to validate and tune the design correlations, CFD simulations of the heat exchanger have been performed. Commercial code FLUENT 6.3 was used for all computations.

Keywords

CFD, Helix heat exchanger, Sludge, Waste to energy

Key words in English

CFD, Helix heat exchanger, Sludge, Waste to energy

Authors

PISKOVSKÝ, M.; HÁJEK, J.; KILKOVSKÝ, B.; ELSAESSER, T.; STEHLÍK, P.

Released

18.04.2007

Location

Chambery, FR

Book

Proceedings of Heat-SET 2007

Edition

Volume 1

Pages from

471

Pages to

482

Pages count

11

BibTex

@inproceedings{BUT22449,
  author="Martin {Piskovský} and Jiří {Hájek} and Bohuslav {Kilkovský} and Thomas {Elsässer} and Petr {Stehlík}",
  title="ANALYSIS OF HELICAL HEAT EXCHANGER WATER - SLUDGE BY CFD",
  booktitle="Proceedings of Heat-SET 2007",
  year="2007",
  series="Volume 1",
  pages="471--482",
  address="Chambery, FR"
}