Analysis of a rotary passive heat recovery device for natural ventilation windcatcher

D O'Connor, J K Calautit, J K Calautit, K Calautit, B R Hughes, C Pantua

Research output: Contribution to journalConference article

Abstract

Based on the design of traditional architecture, windcatchers are devices which provides passive ventilation by manipulating pressure differentials around buildings induced by the movement of wind and difference in temperature. In temperature climates, it is effective in providing passive cooling during summer months. However, during winter months, the low air temperature supplied to the space can cause further thermal discomfort and increase heat loss which lead to higher energy consumption. This limits the capabilities of windcatchers to provide ventilation all year round. To address this issue, the present study proposes incorporating a rotary thermal heat recovery device into the windcatcher channel and investigate its performance using numerical modelling and experimental tests. The study focused on characterizing the design and performance of the copper radial blades of the proposed heat recovery device. The predicted results of the airflow and temperature showed good agreement with the experimental tests. Two types of radial blade designs were assessed in terms of the airflow velocity and distribution, the pressure drop and the heat recovery performance.

LanguageEnglish
Article number012001
Pages1-8
Number of pages8
JournalIOP Conference Series: Materials Science and Engineering
Volume556
DOIs
Publication statusPublished - 19 Aug 2019
Event9th International SOLARIS Conference - Chengdu, China
Duration: 30 Aug 201831 Aug 2018

Fingerprint

Waste heat utilization
Ventilation
Temperature
Heat losses
Pressure drop
Copper
Energy utilization
Cooling
Air
Hot Temperature

Keywords

  • built environment
  • CFD
  • heat recovery
  • natural ventilation

Cite this

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title = "Analysis of a rotary passive heat recovery device for natural ventilation windcatcher",
abstract = "Based on the design of traditional architecture, windcatchers are devices which provides passive ventilation by manipulating pressure differentials around buildings induced by the movement of wind and difference in temperature. In temperature climates, it is effective in providing passive cooling during summer months. However, during winter months, the low air temperature supplied to the space can cause further thermal discomfort and increase heat loss which lead to higher energy consumption. This limits the capabilities of windcatchers to provide ventilation all year round. To address this issue, the present study proposes incorporating a rotary thermal heat recovery device into the windcatcher channel and investigate its performance using numerical modelling and experimental tests. The study focused on characterizing the design and performance of the copper radial blades of the proposed heat recovery device. The predicted results of the airflow and temperature showed good agreement with the experimental tests. Two types of radial blade designs were assessed in terms of the airflow velocity and distribution, the pressure drop and the heat recovery performance.",
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Analysis of a rotary passive heat recovery device for natural ventilation windcatcher. / O'Connor, D; Calautit, J K; Calautit, J K; Calautit, K; Hughes, B R; Pantua, C.

In: IOP Conference Series: Materials Science and Engineering, Vol. 556, 012001, 19.08.2019, p. 1-8.

Research output: Contribution to journalConference article

TY - JOUR

T1 - Analysis of a rotary passive heat recovery device for natural ventilation windcatcher

AU - O'Connor, D

AU - Calautit, J K

AU - Calautit, J K

AU - Calautit, K

AU - Hughes, B R

AU - Pantua, C

PY - 2019/8/19

Y1 - 2019/8/19

N2 - Based on the design of traditional architecture, windcatchers are devices which provides passive ventilation by manipulating pressure differentials around buildings induced by the movement of wind and difference in temperature. In temperature climates, it is effective in providing passive cooling during summer months. However, during winter months, the low air temperature supplied to the space can cause further thermal discomfort and increase heat loss which lead to higher energy consumption. This limits the capabilities of windcatchers to provide ventilation all year round. To address this issue, the present study proposes incorporating a rotary thermal heat recovery device into the windcatcher channel and investigate its performance using numerical modelling and experimental tests. The study focused on characterizing the design and performance of the copper radial blades of the proposed heat recovery device. The predicted results of the airflow and temperature showed good agreement with the experimental tests. Two types of radial blade designs were assessed in terms of the airflow velocity and distribution, the pressure drop and the heat recovery performance.

AB - Based on the design of traditional architecture, windcatchers are devices which provides passive ventilation by manipulating pressure differentials around buildings induced by the movement of wind and difference in temperature. In temperature climates, it is effective in providing passive cooling during summer months. However, during winter months, the low air temperature supplied to the space can cause further thermal discomfort and increase heat loss which lead to higher energy consumption. This limits the capabilities of windcatchers to provide ventilation all year round. To address this issue, the present study proposes incorporating a rotary thermal heat recovery device into the windcatcher channel and investigate its performance using numerical modelling and experimental tests. The study focused on characterizing the design and performance of the copper radial blades of the proposed heat recovery device. The predicted results of the airflow and temperature showed good agreement with the experimental tests. Two types of radial blade designs were assessed in terms of the airflow velocity and distribution, the pressure drop and the heat recovery performance.

KW - built environment

KW - CFD

KW - heat recovery

KW - natural ventilation

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DO - 10.1088/1757-899X/556/1/012001

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SP - 1

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JO - IOP Conference Series: Materials Science and Engineering

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