Visual Observations Inside a Geothermal Thermosyphon

Storch, Thomas; Grab, Thomas; Groß, Ulrich; Wagner, Steffen

doi:10.1615/heatpipescietech.2014011210

Cited by 4 publications

(2 citation statements)

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“…It is worth mentioning that, in addition to these global and distributed field data, other techniques have been employed, ranging from visual infrared scanning, fiber-optic cable, and visual observations to the measurement of internal pressures [60,99,150,[183][184][185][186]. Direct visual observation of the liquid film flow in GCTs in some cases may be necessary to confirm certain theoretical model predictions, or to update some existing theories.…”

Section: Experimental Datamentioning

confidence: 99%

“…Detailed information about these monitoring techniques was well-summarized by Wagner [8]. For example, visual observations of falling film flow inside a GCT was performed by Storch et al [186]. A test setup with a special pressure lock system for the heat pipe's head was developed, whereby a miniature camera could enter the heat pipe's section.…”

Section: Experimental Datamentioning

confidence: 99%

See 1 more Smart Citation

Ground-Coupled Natural Circulating Devices (Thermosiphons): A Review of Modeling, Experimental and Development Studies

et al. 2019

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Compared to conventional ground heat exchangers that require a separate pump or othermechanical devices to circulate the heat transfer fluid, ground coupled thermosiphons or naturallycirculating ground heat exchangers do not require additional equipment for fluid circulation in theloop. This might lead to a better overall efficiency and much simpler operation. This paper providesa review of the current published literature on the different types of existing ground coupledthermosiphons for use in applications requiring moderate and low temperatures. Effort has beenfocused on their classification according to type, configurations, major designs, and chronologicalyear of apparition. Important technological findings and characteristics are provided in summarytables. Advances are identified in terms of the latest device developments and innovative conceptsof thermosiphon technology used for the heat transfer to and from the soil. Applications arepresented in a novel, well-defined classification in which major ground coupled thermosiphonapplications are categorized in terms of medium and low temperature technologies. Finally,performance evaluation is meticulously discussed in terms of modeling, simulations, parametric,and experimental studies.

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Section: Experimental Datamentioning

confidence: 99%

Section: Experimental Datamentioning

confidence: 99%