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Cooling of office b...
Cooling of office buildings in cold climates using direct ground-coupled active chilled beams
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- Arghand, Taha, 1982 (author)
- Chalmers University of Technology
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- Javed, Saqib, 1978 (author)
- Chalmers University of Technology,Lund University,Lunds universitet,Avdelningen för Installations- och klimatiseringslära,Institutionen för bygg- och miljöteknologi,Institutioner vid LTH,Lunds Tekniska Högskola,Division of Building Services,Department of Building and Environmental Technology,Departments at LTH,Faculty of Engineering, LTH
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- Trüschel, Anders, 1970 (author)
- Chalmers University of Technology
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- Dalenbäck, Jan-Olof, 1954 (author)
- Chalmers University of Technology
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(creator_code:org_t)
- Elsevier BV, 2021
- 2021
- English.
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In: Renewable Energy. - : Elsevier BV. - 0960-1481 .- 1879-0682. ; 164, s. 122-132
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Abstract
Subject headings
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- This study investigates the use of a direct ground cooling system (DGCS) using active chilled beams for the cooling of office buildings in Sweden. The methodology of the study entails laboratory experiments to develop and validate a simulation model of the cooling system. The sensitivity of the input parameters, such as borehole heat exchanger (BHE) length, internal heat gains and room temperature set point, are studied with respect to BHE outlet fluid temperature and room thermal comfort. The results provide a practical insight into designing DGCSs with regard to borehole outlet fluid temperatures. The results also show that the thermal comfort criteria in the room are met by applying the DGCS even under the most critical design conditions of undisturbed ground temperature and internal heat gains. The sensitivity study quantifies the influence of the room temperature setpoint and internal heat gain intensity on the BHE length. The BHE outlet temperature level is more sensitive in shorter BHEs than in the longer ones, and BHE length and room temperature levels are highly correlated. Thus, the sizing of DGCS can benefit from a control system to allow the room temperature to float within a certain range.
Subject headings
- TEKNIK OCH TEKNOLOGIER -- Maskinteknik -- Energiteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Mechanical Engineering -- Energy Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Samhällsbyggnadsteknik -- Annan samhällsbyggnadsteknik (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Civil Engineering -- Other Civil Engineering (hsv//eng)
- TEKNIK OCH TEKNOLOGIER -- Samhällsbyggnadsteknik -- Husbyggnad (hsv//swe)
- ENGINEERING AND TECHNOLOGY -- Civil Engineering -- Building Technologies (hsv//eng)
Keyword
- Borehole heat exchanger
- Active chilled beam
- Direct ground cooling system
- Design optimisation
- High-temperature cooling
- Active chilled beam
- Borehole heat exchanger
- Design optimisation
- Direct ground cooling system
- High-temperature cooling
Publication and Content Type
- art (subject category)
- ref (subject category)
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