Thermal performance of ventilated solar collector with energy storage containing phase change material

Publikation: Bidrag til bog/antologi/rapport/konference proceedingKonferenceartikel i proceedingForskningpeer review

Resumé

This paper presents a ventilated solar collector with energy storage of fins containing Phase Change Material (PCM) in the air cavity and investigates its thermal performance. The idea is to use PCM in combination with ventilation as a thermal controller of indoor environment and to consequently decrease the building energy consumption both in summer and winter time. The main parts of the solar collector are plate fins with small thickness containing PCM fitted into the ventilation cavity, which is a good way to compensate the low thermal conductivity of PCM. The solar collector can absorb large amount of solar energy because of the high latent capacity of PCM. The energy is supplied into the indoor environment by means of ventilation. The system can be integrated into the building envelopes such as windows for low-energy building.

This study starts with examining the discharge process of PCM fins by numerically investigating 9 cases of PCM fins in different fin thickness and air gap thickness in a transient 2D model. Then the charge process of PCM fins in consideration of solar radiation is studied in a time-dependent 3D model. The results show that for discharge process, a larger fin thickness and a smaller air gap thickness are good for the increase of total heat exchange amount of PCM fins during discharge process. However, when continuing to increase the fin thickness and keeping the air gap thickness fixed at 5 mm, the total heat exchange amount does not continue the increase trend. The fin thickness of 20 mm has the largest heat exchange amount and the largest utilization percentage. Mechanical ventilation is needed only in cases with air gap thickness as 5mm. The system has the potential to completely or partly substitute the air-conditioning and heating system and a big energy saving potential.
OriginalsprogEngelsk
TitelProceedings of the 38th AIVC - 6th TightVent & 4th venticool Conference : Ventilating healthy low-energy buildings
Udgivelses stedNottingham
Publikationsdato2017
StatusUdgivet - 2017
Begivenhed38th AIVC – 6th TightVent – 4th venticool conference, 2017: Ventilating healthy low-energy buildings - University of Nottingham, Nottingham, Storbritannien
Varighed: 13 sep. 201714 sep. 2017
http://www.aivc2017conference.org/

Konference

Konference38th AIVC – 6th TightVent – 4th venticool conference, 2017
LokationUniversity of Nottingham
LandStorbritannien
ByNottingham
Periode13/09/201714/09/2017
Internetadresse

Fingerprint

Phase change materials
Solar collectors
Energy storage
Ventilation
Air
Enthalpy
Hot Temperature
Solar radiation
Air conditioning
Solar energy
Thermal conductivity
Energy conservation
Energy utilization
Heating
Controllers

Emneord

  • Low-energy buildings
  • Ventilated solar collector
  • Phase change material (PCM)
  • Heating and cooling unit

Citer dette

Hu, Y., & Heiselberg, P. (2017). Thermal performance of ventilated solar collector with energy storage containing phase change material. I Proceedings of the 38th AIVC - 6th TightVent & 4th venticool Conference: Ventilating healthy low-energy buildings Nottingham.
Hu, Yue ; Heiselberg, Per. / Thermal performance of ventilated solar collector with energy storage containing phase change material. Proceedings of the 38th AIVC - 6th TightVent & 4th venticool Conference: Ventilating healthy low-energy buildings. Nottingham, 2017.
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title = "Thermal performance of ventilated solar collector with energy storage containing phase change material",
abstract = "This paper presents a ventilated solar collector with energy storage of fins containing Phase Change Material (PCM) in the air cavity and investigates its thermal performance. The idea is to use PCM in combination with ventilation as a thermal controller of indoor environment and to consequently decrease the building energy consumption both in summer and winter time. The main parts of the solar collector are plate fins with small thickness containing PCM fitted into the ventilation cavity, which is a good way to compensate the low thermal conductivity of PCM. The solar collector can absorb large amount of solar energy because of the high latent capacity of PCM. The energy is supplied into the indoor environment by means of ventilation. The system can be integrated into the building envelopes such as windows for low-energy building.This study starts with examining the discharge process of PCM fins by numerically investigating 9 cases of PCM fins in different fin thickness and air gap thickness in a transient 2D model. Then the charge process of PCM fins in consideration of solar radiation is studied in a time-dependent 3D model. The results show that for discharge process, a larger fin thickness and a smaller air gap thickness are good for the increase of total heat exchange amount of PCM fins during discharge process. However, when continuing to increase the fin thickness and keeping the air gap thickness fixed at 5 mm, the total heat exchange amount does not continue the increase trend. The fin thickness of 20 mm has the largest heat exchange amount and the largest utilization percentage. Mechanical ventilation is needed only in cases with air gap thickness as 5mm. The system has the potential to completely or partly substitute the air-conditioning and heating system and a big energy saving potential.",
keywords = "Low-energy buildings, Ventilated solar collector, Phase change material (PCM), Heating and cooling unit, Low-energy buildings, Ventilated solar collector, Phase change material (PCM), Heating and cooling unit",
author = "Yue Hu and Per Heiselberg",
year = "2017",
language = "English",
booktitle = "Proceedings of the 38th AIVC - 6th TightVent & 4th venticool Conference",

}

Hu, Y & Heiselberg, P 2017, Thermal performance of ventilated solar collector with energy storage containing phase change material. i Proceedings of the 38th AIVC - 6th TightVent & 4th venticool Conference: Ventilating healthy low-energy buildings. Nottingham, Nottingham, Storbritannien, 13/09/2017.

Thermal performance of ventilated solar collector with energy storage containing phase change material. / Hu, Yue; Heiselberg, Per.

Proceedings of the 38th AIVC - 6th TightVent & 4th venticool Conference: Ventilating healthy low-energy buildings. Nottingham, 2017.

Publikation: Bidrag til bog/antologi/rapport/konference proceedingKonferenceartikel i proceedingForskningpeer review

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AU - Hu, Yue

AU - Heiselberg, Per

PY - 2017

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N2 - This paper presents a ventilated solar collector with energy storage of fins containing Phase Change Material (PCM) in the air cavity and investigates its thermal performance. The idea is to use PCM in combination with ventilation as a thermal controller of indoor environment and to consequently decrease the building energy consumption both in summer and winter time. The main parts of the solar collector are plate fins with small thickness containing PCM fitted into the ventilation cavity, which is a good way to compensate the low thermal conductivity of PCM. The solar collector can absorb large amount of solar energy because of the high latent capacity of PCM. The energy is supplied into the indoor environment by means of ventilation. The system can be integrated into the building envelopes such as windows for low-energy building.This study starts with examining the discharge process of PCM fins by numerically investigating 9 cases of PCM fins in different fin thickness and air gap thickness in a transient 2D model. Then the charge process of PCM fins in consideration of solar radiation is studied in a time-dependent 3D model. The results show that for discharge process, a larger fin thickness and a smaller air gap thickness are good for the increase of total heat exchange amount of PCM fins during discharge process. However, when continuing to increase the fin thickness and keeping the air gap thickness fixed at 5 mm, the total heat exchange amount does not continue the increase trend. The fin thickness of 20 mm has the largest heat exchange amount and the largest utilization percentage. Mechanical ventilation is needed only in cases with air gap thickness as 5mm. The system has the potential to completely or partly substitute the air-conditioning and heating system and a big energy saving potential.

AB - This paper presents a ventilated solar collector with energy storage of fins containing Phase Change Material (PCM) in the air cavity and investigates its thermal performance. The idea is to use PCM in combination with ventilation as a thermal controller of indoor environment and to consequently decrease the building energy consumption both in summer and winter time. The main parts of the solar collector are plate fins with small thickness containing PCM fitted into the ventilation cavity, which is a good way to compensate the low thermal conductivity of PCM. The solar collector can absorb large amount of solar energy because of the high latent capacity of PCM. The energy is supplied into the indoor environment by means of ventilation. The system can be integrated into the building envelopes such as windows for low-energy building.This study starts with examining the discharge process of PCM fins by numerically investigating 9 cases of PCM fins in different fin thickness and air gap thickness in a transient 2D model. Then the charge process of PCM fins in consideration of solar radiation is studied in a time-dependent 3D model. The results show that for discharge process, a larger fin thickness and a smaller air gap thickness are good for the increase of total heat exchange amount of PCM fins during discharge process. However, when continuing to increase the fin thickness and keeping the air gap thickness fixed at 5 mm, the total heat exchange amount does not continue the increase trend. The fin thickness of 20 mm has the largest heat exchange amount and the largest utilization percentage. Mechanical ventilation is needed only in cases with air gap thickness as 5mm. The system has the potential to completely or partly substitute the air-conditioning and heating system and a big energy saving potential.

KW - Low-energy buildings

KW - Ventilated solar collector

KW - Phase change material (PCM)

KW - Heating and cooling unit

KW - Low-energy buildings

KW - Ventilated solar collector

KW - Phase change material (PCM)

KW - Heating and cooling unit

M3 - Article in proceeding

BT - Proceedings of the 38th AIVC - 6th TightVent & 4th venticool Conference

CY - Nottingham

ER -

Hu Y, Heiselberg P. Thermal performance of ventilated solar collector with energy storage containing phase change material. I Proceedings of the 38th AIVC - 6th TightVent & 4th venticool Conference: Ventilating healthy low-energy buildings. Nottingham. 2017