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Évaluation des performances d’une pompe à chaleur géothermique intégrée pour des bâtiments résidentiels à énergie nette nulle sous différents climats.

Performance evaluation of a ground-source integrated heat pump for residential net-zero energy buildings across different climates.

Numéro : 3274

Auteurs : JANG D. S., SKYE H. M.

Résumé

Ground-source integrated heat pumps (GSIHPs) can save energy in residential buildings by providing both space conditioning and domestic hot water (DHW) using a single efficient appliance. The efficiency is enabled through use of the thermodynamically favorable heat sink/source of a ground heat exchanger (GHX), and can be enhanced by using variable-speed components. We conducted a TRNSYS simulation to explore the GSIHP’s performance in a residential net-zero energy building located in different climates. Compared to a conventional ground-source heat pump (GSHP), the GSIHP reduced the heating, cooling, dehumidifier, and DHW energy consumption by (25 to 63) %. The baseline GHX length was determined based on the building loads at each climate zone using the Kavanaugh and Rafferty method. The photovoltaic (PV) array was sized to achieve net-zero energy use. Furthermore, the variation in entering liquid temperature (ELT) was studied for long-term operation implications.

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Pages : 9 p.

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Détails

  • Titre original : Performance evaluation of a ground-source integrated heat pump for residential net-zero energy buildings across different climates.
  • Identifiant de la fiche : 30032943
  • Langues : Anglais
  • Source : 2024 Purdue Conferences. 8th International High Performance Buildings Conference at Purdue.
  • Date d'édition : 15/07/2024

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