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Experimental investigation into the potential of using a shallow ground-cooled condenser in Lebanon

Mahmoud, Montaser ; Alkhedher, Mohammad ; Ramadan, Mohamad ; Pullen, Keith ; Olabi, Abdul-Ghani ; Naher, Sumsun

Energy conversion and management, 2022-07, Vol.264, p.115729, Article 115729 [Periódico revisado por pares]

Oxford: Elsevier Ltd

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  • Título:
    Experimental investigation into the potential of using a shallow ground-cooled condenser in Lebanon
  • Autor: Mahmoud, Montaser ; Alkhedher, Mohammad ; Ramadan, Mohamad ; Pullen, Keith ; Olabi, Abdul-Ghani ; Naher, Sumsun
  • Assuntos: Ambient temperature ; Cooling ; Cooling systems ; Geothermal energy ; Geothermal power ; Ground heat exchanger ; Ground temperature ; Ground-cooled condenser ; Heat ; Heat exchangers ; Intermediate water ; Power generation ; Pressure drop ; Shallow geothermal energy ; Temperature ; Temperature gradients ; Temperature measurement ; Temperature sensors
  • É parte de: Energy conversion and management, 2022-07, Vol.264, p.115729, Article 115729
  • Descrição: •Investigation of shallow geothermal energy in Bekaa-Lebanon is performed.•Ground temperature measurement at different depths is carried out.•Comparison between direct and indirect ground cooling systems is presented. The aim of this paper is to investigate the potential of using shallow geothermal energy in Lebanon for cooling a power cycle. The study includes ground temperature measurement, operating system management, and pressure drop assessment. Temperatures were monitored at six positions underground reaching to a depth of 2 m in Bekaa-Lebanon during the whole of 2020. The temperature sensors were placed at depths of 0.3, 0.6, 1, 1.3, 1.6, and 2 m underground. At 2 m depth, the ground temperature showed high stability with an annual temperature difference of 7 °C, while that of high and low ambient temperatures were 40 °C and 33 °C, respectively. Based on the comparison between ambient and ground temperatures, the ground cooling system can operate 207 days/year partially with full operations of 51 days. This shows that shallow geothermal energy has a great potential to activate a ground-based cooling system in this region. However, to avoid heat accumulation, use of another heat exchanger is recommended to support the ground cooling system. This heat exchanger can also provide coolth compensation when the power cycle is turned off. The pressure drop inside the heat exchangers was found to be highly significant, hence, it was essential to add an intermediate water loop between the power cycle and the ground loop.
  • Editor: Oxford: Elsevier Ltd
  • Idioma: Inglês
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  • Realização: ABCD-USP USP   Logos de Redes Sociais: Freepik

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