EXPERIMENTAL INVESTIGATION OF FLUID FLOW REGIME IN THERMOSYPHON HEAT-PIPE EVACUATED TUBE SOLAR WATER HEATERS

David Redpath, Philip Griffiths, Steve Lo, MG Herron

Research output: Chapter in Book/Report/Conference proceedingConference contribution

2 Citations (Scopus)

Abstract

Previous studies have reported that the adoption of thermosyphon fluid circulation can reduce the capital cost of solar water heating systems. Well designed thermosyphon systems are as effective as pumped systems but with lower capital and running costs. To investigate this; two experiments were undertaken. Firstly a thermosyphon heat-pipe Evacuated Tube Solar Water Heater (ETSWH) was assembled using a proprietary collector and its performance monitored under a northern maritime climate. Secondly a transparent physical model was fabricated to the same dimensions as the proprietary collector’s manifold and the internal fluid flow regime was observed using particle imaging velocimetry. The annual monitored performance of the thermosyphon heat-pipe ETSWH demonstrated that this system could supply a solar fraction of 0.4, 0.45 and 0.71 towards the average hot water load of a detached, semi detached and terraced dwelling respectively.
LanguageEnglish
Title of host publicationUnknown Host Publication
EditorsPaul Kenny, Vivienne Brophy, J. Owen Lewis
Place of PublicationDublin
Number of pages1000
Publication statusPublished - 22 Oct 2008
EventPLEA 2008, Towards zero energy buildings - Dublin, Ireland
Duration: 22 Oct 2008 → …

Conference

ConferencePLEA 2008, Towards zero energy buildings
Period22/10/08 → …

Fingerprint

Solar water heaters
Thermosyphons
Tubes (components)
Heat pipes
Flow of fluids
Velocity measurement
Costs
Water
Imaging techniques
Heating
Fluids
Experiments

Keywords

  • Thermosyphons
  • evacuated
  • heat-pipe

Cite this

Redpath, D., Griffiths, P., Lo, S., & Herron, MG. (2008). EXPERIMENTAL INVESTIGATION OF FLUID FLOW REGIME IN THERMOSYPHON HEAT-PIPE EVACUATED TUBE SOLAR WATER HEATERS. In P. Kenny, V. Brophy, & J. O. Lewis (Eds.), Unknown Host Publication Dublin.
Redpath, David ; Griffiths, Philip ; Lo, Steve ; Herron, MG. / EXPERIMENTAL INVESTIGATION OF FLUID FLOW REGIME IN THERMOSYPHON HEAT-PIPE EVACUATED TUBE SOLAR WATER HEATERS. Unknown Host Publication. editor / Paul Kenny ; Vivienne Brophy ; J. Owen Lewis. Dublin, 2008.
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abstract = "Previous studies have reported that the adoption of thermosyphon fluid circulation can reduce the capital cost of solar water heating systems. Well designed thermosyphon systems are as effective as pumped systems but with lower capital and running costs. To investigate this; two experiments were undertaken. Firstly a thermosyphon heat-pipe Evacuated Tube Solar Water Heater (ETSWH) was assembled using a proprietary collector and its performance monitored under a northern maritime climate. Secondly a transparent physical model was fabricated to the same dimensions as the proprietary collector’s manifold and the internal fluid flow regime was observed using particle imaging velocimetry. The annual monitored performance of the thermosyphon heat-pipe ETSWH demonstrated that this system could supply a solar fraction of 0.4, 0.45 and 0.71 towards the average hot water load of a detached, semi detached and terraced dwelling respectively.",
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author = "David Redpath and Philip Griffiths and Steve Lo and MG Herron",
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Redpath, D, Griffiths, P, Lo, S & Herron, MG 2008, EXPERIMENTAL INVESTIGATION OF FLUID FLOW REGIME IN THERMOSYPHON HEAT-PIPE EVACUATED TUBE SOLAR WATER HEATERS. in P Kenny, V Brophy & JO Lewis (eds), Unknown Host Publication. Dublin, PLEA 2008, Towards zero energy buildings, 22/10/08.

EXPERIMENTAL INVESTIGATION OF FLUID FLOW REGIME IN THERMOSYPHON HEAT-PIPE EVACUATED TUBE SOLAR WATER HEATERS. / Redpath, David; Griffiths, Philip; Lo, Steve; Herron, MG.

Unknown Host Publication. ed. / Paul Kenny; Vivienne Brophy; J. Owen Lewis. Dublin, 2008.

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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AB - Previous studies have reported that the adoption of thermosyphon fluid circulation can reduce the capital cost of solar water heating systems. Well designed thermosyphon systems are as effective as pumped systems but with lower capital and running costs. To investigate this; two experiments were undertaken. Firstly a thermosyphon heat-pipe Evacuated Tube Solar Water Heater (ETSWH) was assembled using a proprietary collector and its performance monitored under a northern maritime climate. Secondly a transparent physical model was fabricated to the same dimensions as the proprietary collector’s manifold and the internal fluid flow regime was observed using particle imaging velocimetry. The annual monitored performance of the thermosyphon heat-pipe ETSWH demonstrated that this system could supply a solar fraction of 0.4, 0.45 and 0.71 towards the average hot water load of a detached, semi detached and terraced dwelling respectively.

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Redpath D, Griffiths P, Lo S, Herron MG. EXPERIMENTAL INVESTIGATION OF FLUID FLOW REGIME IN THERMOSYPHON HEAT-PIPE EVACUATED TUBE SOLAR WATER HEATERS. In Kenny P, Brophy V, Lewis JO, editors, Unknown Host Publication. Dublin. 2008