Change search
ReferencesLink to record
Permanent link

Direct link
Heat transfer in the evaporator of an advanced two-phase thermosyphon loop
KTH, School of Industrial Engineering and Management (ITM), Energy Technology, Applied Thermodynamics and Refrigeration.
2005 (English)In: International journal of refrigeration, ISSN 0140-7007, E-ISSN 1879-2081, Vol. 28, no 2, 190-202 p.Article in journal (Refereed) Published
Abstract [en]

As heat generation from electronic components increase and the limit of air-cooling is reached, the interest for using liquid cooling for high heat flux applications has risen. Thermosyphon cooling is an alternative liquid cooling technique, in which heat is transferred as heat of vaporization from evaporator to condenser with a relatively small temperature difference. The effect of fluid properties, the structure of wall surfaces, and the effect of system pressure was investigated and reported previously by the author. In this paper, the influence of heat flux, system pressure, mass flow rate, vapor fraction, diameter of evaporator channel and tubing distance between evaporator and condenser on the heat transfer coefficient of an advanced two-phase thermosyphon loop is reported. The tested evaporators were made from small blocks of copper with 7, 5, 4, 3 and 2 vertical channels with the diameters of 1.1, 1.5, 1.9, 2.5, and 3.5 mm, respectively and the length of 14.6 mm. Tests were done with isobutane at heat fluxes ranging between 28.3 and 311.5 kW/m(2).

Place, publisher, year, edition, pages
2005. Vol. 28, no 2, 190-202 p.
Keyword [en]
process, cooling, component, electronic, thermosiphon, heat transfer, pressure, flow, geometry, general correlation, flow, tube, refrigerants, channels, pressure
URN: urn:nbn:se:kth:diva-14556DOI: 10.1016/j.ijrefrig.2004.10.006ISI: 000227229900007ScopusID: 2-s2.0-13244264981OAI: diva2:332597
QC 20100525Available from: 2010-08-05 Created: 2010-08-05Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full textScopus

Search in DiVA

By author/editor
Khodabandeh, Rahmatollah
By organisation
Applied Thermodynamics and Refrigeration
In the same journal
International journal of refrigeration

Search outside of DiVA

GoogleGoogle Scholar
The number of downloads is the sum of all downloads of full texts. It may include eg previous versions that are now no longer available

Altmetric score

Total: 48 hits
ReferencesLink to record
Permanent link

Direct link