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Amélioration du rendement des pompes à chaleur grâce à la régulation de la surchauffe au refoulement.

Heat pump efficiency improvement by discharge superheated control.

Numéro : pap. 2176

Auteurs : TANAWITTAYAKORN W., PHRAJUNPANICH P., SIWAPORNPHAISARN S.

Résumé

This research presents how to improve the heat pump efficiency by using discharge superheat control (DSH). Normal heat pump uses suction superheat control (SSH) about 5 K. At this condition, it is an optimum condition for cooling COP but it is not the highest cooling capacity. To improve heat pump efficiency, it needs to get maximum heat from Evaporator and internal heat of compressor to discharge at condensing. This condition needs to be controlled at SSH ~ 0 K. Unfortunately normal heat pump can not be controlled at this condition because of limitation of expansion valve controlling and operating limit of some compressor. New control method under this condition, is called discharge superheat control (DSH). It uses discharge temperature for controlling refrigerant flow to get the maximum heat at Evaporator and Compressor. From the experiment with brine to water(BTW) and air to water heat pump (ATW), DSH control will lead to highest HCOP up to 25% improved, comparing to the original control method.

Documents disponibles

Format PDF

Pages : 9 p.

Disponible

  • Prix public

    20 €

  • Prix membre*

    15 €

* meilleur tarif applicable selon le type d'adhésion (voir le détail des avantages des adhésions individuelles et collectives)

Détails

  • Titre original : Heat pump efficiency improvement by discharge superheated control.
  • Identifiant de la fiche : 30006627
  • Langues : Anglais
  • Source : 2012 Purdue Conferences. 14th International Refrigeration and Air-Conditioning Conference at Purdue.
  • Date d'édition : 16/07/2012

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