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Étude expérimentale et caractérisation des performances d’un échangeur de chaleur à tubes ailetés comprenant des matériaux à changement de phase pour les applications de chauffage et de refroidissement des bâtiments.

Experimental investigation and performance characterization of PCM integrated finned tube heat exchanger for building heating and cooling applications.

Numéro : 3457

Auteurs : TAMRAPARNI A., RENDALL J., SHEN Z., HUN D., SHRESTHA S.

Résumé

Phase change material (PCM) based thermal energy storage (TES) technologies are promising for building heating and cooling applications. PCM based TES systems could enable flexibility of buildings' thermal demand, shave peak load, and provide energy savings to the end user. Although PCMs have large latent heat storage capacity, their low thermal conductivity values limit their charge and discharge rates and their overall efficiency. Herein we investigate the thermal performance of a PCM based heat exchanger that is designed to offset buildings' heating and cooling loads.
TES integrated with a thermally anisotropic building envelope (TABE) offers unique benefits by redirecting stored thermal energy from a building to a TES system using hydronic loops. In this work, we describe an experimental apparatus for two 5-gallon fin and tube heat exchanger systems integrated with a commercially available organic PCM that is subjected to heated and cooled boundaries. We investigated the thermal performance of the heat exchanger by varying the volumetric fluid flow rate and temperature difference of the PCM heat exchanger. Furthermore, we demonstrate the cyclic stability of the PCM heat exchanger system using the developed experimental apparatus over many cycles. The developed method and apparatus provide a means to investigate and characterize thermal storage systems at the gallon scale, which can help in the design of future energy storage systems optimized for cost and energy savings.

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Pages : 9 p.

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Détails

  • Titre original : Experimental investigation and performance characterization of PCM integrated finned tube heat exchanger for building heating and cooling applications.
  • Identifiant de la fiche : 30032930
  • Langues : Anglais
  • Source : 2024 Purdue Conferences. 8th International High Performance Buildings Conference at Purdue.
  • Date d'édition : 15/07/2024

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