We found a match
Your institution may have access to this item. Find your institution then sign in to continue.
- Title
Thermal performance of helical ground air heat exchanger under Saharan climate conditions: an experimental study.
- Authors
Lebbihiat, Nacer; Atia, Abdelmalek; Arıcı, Müslüm; Meneceur, Noureddine
- Abstract
In the present research paper, the thermal performance of helical ground air heat exchanger (HGAHE) has been experimentally analyzed under Saharan climate conditions during summer season. A flexible PVC pipe with a diameter of 0.06 m and a length of 30 m has been arranged as a helical-coil layout to design the HGAHE, and it is inserted into a borehole of 5 m depth. The study acknowledges that a drop as high as 11.0 °C in air temperature can be achieved with an air velocity of 10 m s−1 and an inlet air temperature of 38 °C. The study also revealed that, by incrementing the air velocity from 10 to 20 m s−1, the heat exchange rate of the HGAHE system increases by 158% after 3 h of operation time; however, the efficiency of the HGAHE decreases by 21.51%. Moreover, thermal performance derating factor (TPDF) increments with increasing the operation time and air velocity. After 3 h of operation time, the highest TPDF is attained as 0.27 with a velocity of 20 m s−1, whereas the lowest TPDF is observed as 0.14 for a velocity of 10 m s−1.
- Subjects
HEAT exchangers; POLYVINYL chloride pipe; FOREIGN exchange rates; ATMOSPHERIC temperature; VELOCITY; SUMMER
- Publication
Journal of Thermal Analysis & Calorimetry, 2023, Vol 148, Issue 12, p5819
- ISSN
1388-6150
- Publication type
Article
- DOI
10.1007/s10973-023-12085-5