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Distributed Tempera...
Distributed Temperature Measurements on a U-pipe Thermosyphon Borehole Heat Exchanger With CO2
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- Acuña, José, 1982- (author)
- KTH,Tillämpad termodynamik och kylteknik
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- Palm, Björn, 1955- (author)
- KTH,Tillämpad termodynamik och kylteknik
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- Khodabandeh, Rahmat (author)
- KTH,Tillämpad termodynamik och kylteknik
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Weber, Kenneth (author)
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(creator_code:org_t)
- Sydney, Australia : International Institute of Refrigeration, 2010
- 2010
- English.
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In: Refrigeration Science and Technology Proceedings. - Sydney, Australia : International Institute of Refrigeration.
- Related links:
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https://urn.kb.se/re...
Abstract
Subject headings
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- In thermosyphon Borehole Heat Exchangers, a heat carrier fluid circulates while exchanging heat with the ground without the need of a circulation pump, representing an attractive alternative when compared to other more conventional systems. Normally, the fluid is at liquid-vapor saturation conditions and circulation is maintained by density differences between the two phases as the fluid absorbs energy from the ground. This paper presents some experimental experiences from a 65 meter deep thermosyphon borehole heat exchanger loop using Carbon Dioxide as heat carrier fluid, instrumented with a fiber optic cable for distributed temperature measurements along the borehole depth. The heat exchanger consists of an insulated copper tube through which the liquid CO2 flows downwards, and a copper tube acting as a riser. The results show temperatures every two meters along the riser, illustrating the heat transfer process in the loop during several heat pump cycles.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Energiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Energy Engineering (hsv//eng)
Keyword
- Thermosyphon Borehole Heat Exchanger
Publication and Content Type
- ref (subject category)
- kon (subject category)
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